WO2021185204A1 - Optical fiber port identification method and apparatus, communication system, and network device - Google Patents

Abstract

The present application relates to the technical field of optical fiber communications. Disclosed are an optical fiber port identification method and apparatus, a communication system, and a network device. An optical fiber link is provided with an optical fiber port and multiple dimming units, and arrangement laws of dimming units on different optical fiber links are different. The dimming unit is used for reflecting a signal in a first wave band. The method comprises: after obtaining a target signal of an optical fiber port on each optical fiber link, a first device identifies an optical fiber port on a first optical fiber link according to an encoding signal from the first optical fiber link and the obtained target signal. The target signal of the optical fiber port is used for indicating: the arrangement rules of the dimming unit corresponding to the optical fiber port on the optical fiber link. The encoding signal is obtained after the dimming unit on the first optical fiber link reflects a signal in a first wave band. The present application can be suitable for identifying an optical fiber port of a relatively complex optical fiber link, and is used in a communication system.

Description

Optical fiber port identification method and device, communication system and network equipment

This application claims the priority of the Chinese patent application filed on March 17, 2020 with the application number 202010188685. 2, and the invention titled "Optical fiber port identification method and device, communication system, network equipment", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of optical fiber communication technology, and in particular to an optical fiber port identification method and device, communication system, and network equipment.

Background technique

A communication system usually includes multiple optical fiber links and devices connected to the optical fiber links, and the devices in the communication system can communicate through the connected optical fiber links.

Optical fiber links in communication systems are often more complicated, and there are more optical fiber ports on each optical fiber link. Therefore, it is often necessary to identify the fiber port on the fiber link to accurately connect the device to the corresponding fiber link.

There is an urgent need for an optical fiber port identification method suitable for more complex optical fiber links.

Summary of the invention

This application provides an optical fiber port identification method and device, a communication system, and network equipment, which can be applied to the identification of optical fiber ports of relatively complex optical fiber links. The technical solutions are as follows:

In a first aspect, a method for identifying an optical fiber port is provided for a first device, and the first device is connected to a plurality of optical fiber links. The optical fiber link is provided with an optical fiber port and multiple dimming units corresponding to the optical fiber port, and the arrangement of the dimming units on different optical fiber links is different; the dimming unit on the optical fiber link is used for reflection The signal in the first waveband, and the sum of the reflectivity of all the dimming units on the optical fiber link to the signal in the first waveband is less than or equal to 1.

The method includes: after the first device obtains the target signal of the optical fiber port on each optical fiber link, according to the encoded signal from the first optical fiber link and the obtained target signal, Optical fiber port for identification. Wherein, the target signal of the optical fiber port is used to indicate: the arrangement rule of the dimming unit corresponding to the optical fiber port on the optical fiber link, and the multiple optical fiber links include the first optical fiber link, and the code from the first optical fiber link The signal is obtained by reflecting the signal in the first waveband by the dimming unit on the first optical fiber link.

In the port identification method provided by the embodiment of the present application, since multiple dimming units corresponding to the fiber ports are provided on the optical fiber link, and the arrangement rules of the dimming units on different optical fiber links are different. Therefore, the arrangement rule of the dimming unit on the optical fiber link can be determined according to the encoded signal from the optical fiber link, and then the optical fiber port can be identified according to the arrangement rule. Moreover, in the embodiments of the present application, there is no need to change the basic structure of the communication system, and only minor changes are made to part of the structure of the communication system, which reduces the cost of improvement and the complexity of project implementation, thereby facilitating subsequent management and maintenance.

In addition, in the embodiments of the present application, since the number of optical fiber ports that can be detected can be increased by increasing the arrangement of the dimming unit, the link detection of the communication system with more optical fiber links and optical fiber ports is realized, thereby It can be applied to more complicated communication systems. Moreover, in the embodiments of the present application, the parameters of each dimming unit are the same. Therefore, there is no need to set multiple dimming units with different parameters on the optical fiber link; the wavelength of the signal in the first band emitted by the device can be less. (Such as unique), so that the device does not need to send out multiple signals of different wavelengths. In the embodiment of the present application, the device can automatically realize the recognition of the optical fiber port without manual participation, which improves the degree of automation and the recognition efficiency of the optical fiber port, and reduces the error rate.

Optionally, the arrangement rule of the dimming unit on the optical fiber link includes: the number of the dimming unit on the optical fiber link, and the number of the dimming unit on the optical fiber link At least one of the position and the distance between adjacent dimming units on the optical fiber link. In the embodiment of the present application, the arrangement rule includes: the number of dimming units on the optical fiber link, the position of the dimming unit on the optical fiber link, and the interval between adjacent dimming units on the optical fiber link as an example.

Optionally, the optical fiber link is provided with a plurality of optical fiber ports, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than a distance threshold, and is divided by the plurality of optical fiber ports. The distance of the other optical fiber ports other than each optical fiber port is greater than or equal to the distance threshold; according to the encoded signal and the target signal of the optical fiber port on each optical fiber link, the distance between the optical fiber ports on the first optical fiber link When identifying the optical fiber port of the first optical fiber link, the first device may first determine the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; The detection sub-signal corresponding to each optical fiber port on the upper and the target signal of the optical fiber port on each optical fiber link identify the optical fiber port on the first optical fiber link. Wherein, the detection sub-signal is obtained by reflecting the signal in the first waveband by the plurality of dimming units corresponding to each optical fiber port.

Optionally, the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; the plurality of dimming units corresponding to each optical fiber port are arranged in the plurality of In at least part of the target positions, and the at least part of the target positions includes: the first target position and the last target position in the plurality of target positions; When detecting the sub-signal of each optical fiber port on the first optical fiber link, it may be determined that the coded signal corresponds to the first optical fiber link according to the unit time length and the number of target positions corresponding to each optical fiber port. The detection sub-signal of each optical fiber port; wherein the unit time length is: the time required for the signal in the first waveband to be transmitted on the optical fiber link between adjacent target positions among the multiple target positions.

For example, assuming that each of the above-mentioned optical fiber ports corresponds to 5 target positions, the first device may first perform the first detection on the encoded signal when identifying the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal. Periodic detection. Exemplarily, in each cycle of detection, the first device first detects the first high potential in the received encoded signal. After detecting the first high potential, the first device may detect the position of the coded signal every unit time, and stop the detection after the fourth detection. In the process of each detection, the first device needs to determine whether the potential of the encoded signal at the current moment is a high potential or a low potential. After the fourth detection, the first device can detect the first high potential according to the first detection, and As a result of these four detections, the detection sub-signal corresponding to the dimming unit corresponding to the first fiber port is generated. It should be noted that the number of times that the first device detects positions in the coded signal every unit time may be one less than the number of target positions corresponding to each fiber port; in this application, 5 targets corresponding to each fiber port are used. The position is taken as an example, so the number of times of detecting the position every unit duration in the coded signal is 4. After that, after the detection of the first cycle is completed, the first device may continue to detect the encoded signal for the second cycle to obtain the detection sub-signal corresponding to the dimming unit corresponding to the second optical fiber port. It should be noted that after the detection of the second cycle ends, the first device can still continue to perform more cycles of detection of the encoded signal until the entire detection of the encoded signal is completed.

Optionally, when the respective optical fiber links are independent of each other, in the target direction, the arrangement rules of the dimming units corresponding to the same order of optical fiber ports on different optical fiber links are different, and the target direction includes: approaching or farther away from the The direction of the first device; the method further includes: determining the sequence corresponding to each fiber port on each fiber link, the sequence corresponding to the fiber port is: in the target direction, the fiber port is in The sequence of the multiple optical fiber ports on the optical fiber link; the first device detects the sub-signal corresponding to each optical fiber port on the first optical fiber link, and the optical fiber port on each optical fiber link. The target signal, when identifying the fiber port on the first fiber link, in the target direction, if the dimming reflected by the detection sub-signal corresponding to the fiber port of the target order on the first fiber link The arrangement rule of the unit is consistent with the arrangement rule of the dimming unit indicated by the target signal of the first optical fiber port, and the first device can identify the optical fiber port in the target order on the first optical fiber link as the first optical fiber link. An optical fiber port, and the first optical fiber port is any optical fiber port corresponding to the target order.

Optionally, when each optical fiber link overlaps, the first device is connected with multi-level branches, and each level of the branch includes multiple branches; each first-level branch is connected to the first device Connection, each branch is connected to multiple lower-level branches, and the lower-level branches connected by different branches are different; the optical fiber link includes: one of the branches of each level in the multi-level branch Branch; the optical fiber ports set on the optical fiber link include: the optical fiber ports on each branch close to the first device; the arrangement of the dimming units corresponding to the optical fiber ports on different first branch branches is different, and the same branch The arrangement rules of the dimming units corresponding to the optical fiber ports on the multiple branches connected to each other are different; the method further includes: determining the port group corresponding to each optical fiber port, wherein each optical fiber port on the first-level branch corresponds to The port group includes: the optical fiber port on each level 1 branch; the port group corresponding to the optical fiber port on each level i branch includes: the optical fiber port on each level i branch, and the each The optical fiber port on the first i-1 branch connected to the optical fiber port on the i-th branch, i≥2; the first device detects the sub-signal corresponding to each optical fiber port on the first optical fiber link, and When the target signal of the optical fiber port on each optical fiber link is used to identify the optical fiber port on the first optical fiber link, if the first j optical fibers on the first optical fiber link close to the first device The arrangement rule of the dimming unit reflected by the detection sub-signal of the port is consistent with the arrangement rule of the dimming unit indicated by the target signal of the port group corresponding to the second optical fiber port. The j-th optical fiber port on the optical fiber link that is close to the first device is identified as the second optical fiber port, and the second optical fiber port is any optical fiber port on the multiple optical fiber links.

Optionally, when each optical fiber link overlaps, the multiple first-level branches are all connected to the first device through the initial branch; a part of the dimming unit corresponding to the optical fiber port is located in the optical fiber On the branch where the port is located, another part of the dimming unit corresponding to the optical fiber port is located on the branch connected to the optical fiber port.

Optionally, the foregoing first waveband signal may be sent by the second device to the first optical fiber link. The first device is connected to the second device via the first optical fiber link, and the receiving the encoded signal from the first optical fiber link includes: receiving the signal sent by the second device via the first optical fiber link The coded signal; wherein the coded signal is a signal sent by the second device after sending a signal in the first waveband to the first optical fiber link, and the dimming unit is also used to transmit For signals outside the first waveband, the wavelength of the coded signal is outside the first waveband.

Optionally, the foregoing first waveband signal may be sent by the first device to the first optical fiber link. Before the receiving the encoded signal from the first optical fiber link, the method further includes: sending the signal in the first wavelength band to the first optical fiber link.

Optionally, the method further includes: determining a reference signal of each optical fiber link, where the reference signal of the optical fiber link is used to indicate: the arrangement rule of all dimming units on the optical fiber link; When the arrangement rule of the dimming unit reflected by the encoded signal is different from the arrangement rule indicated by the reference signals of the multiple optical fiber links, it is determined that the first optical fiber link is faulty.

Optionally, after the failure of the first optical fiber link is determined, the method further includes: determining the failed link segment in the first optical fiber link according to the encoded signal.

Optionally, the dimming unit includes: a grating (such as a chirped fiber bragg grating (CFBG)), a semi-transparent and semi-reflective film, and the like.

Optionally, the bandwidth of the first waveband ranges from 2 nanometers to 10 nanometers, and/or the absolute value of the difference between the wavelength of the signal in the first waveband and the center wavelength of the first waveband is ≤ 5 nanometers . In this way, when the bandwidth of the first waveband is larger, and the center wavelength of the first waveband is close to the wavelength of the first waveband signal, even if the dimming unit is affected by the environment, the center wavelength of the waveband reflected by the dimming unit The offset can still ensure that the dimming unit can reflect the signal in the first waveband emitted by the second device, and avoid the function of the dimming unit from being affected by the environment.

In a second aspect, an optical fiber port identification method is provided for a second device, the second device is connected to a first device through a first optical fiber link, and the first device is connected to a plurality of optical fiber links, so The first optical fiber link is any optical fiber link among the multiple optical fiber links, and the optical fiber link is provided with an optical fiber port, and multiple dimming units corresponding to the optical fiber port, and different optical fiber chains The arrangement rules of the dimming units on the road are different; the dimming units are used to reflect signals in the first waveband and transmit signals outside the first waveband, and the dimming unit pairs on the optical fiber link The sum of the reflectances of the signals in the first waveband is less than or equal to 1; the method includes: the second device first sends the signals in the first waveband to the first optical fiber link, and receives the first optical fiber link. The signal in the first waveband reflected by the dimming unit on the optical fiber link; after that, the second device transmits the signal to the first optical fiber link through the first optical fiber link according to the signal received from the first optical fiber link. The first device sends a coded signal, and the wavelength of the coded signal is outside the first waveband.

Optionally, the arrangement rule of the dimming unit on the optical fiber link includes: the number of the dimming unit on the optical fiber link, and the number of the dimming unit on the optical fiber link At least one of the position and the distance between adjacent dimming units on the optical fiber link.

In a third aspect, an optical fiber port identification device is provided for use in a first device, and the optical fiber port identification device includes various modules for executing the optical fiber port identification method provided in the first aspect.

Optionally, the optical fiber port identification device includes: a receiving module, a first sending module, and a processing module, wherein the receiving module includes: a filter and a circulator; the processing module is respectively connected to the first sending module and the Circulator, the circulator is connected to the filter and the first transmission module, the filter is connected to the first optical fiber link; the processing module is used to control the first transmission module to the ring The circulator sends the signal of the first waveband; the circulator is used to send the signal from the first sending module to the filter, and the filter is used to send the signal from the circulator to the first optical fiber link. The signal; the filter is used to receive the encoded signal from the first optical fiber link, and to send the encoded signal from the first optical fiber link to the circulator; the circulator is used to The processing module sends the encoded signal from the filter.

In a fourth aspect, an optical fiber port identification device is provided for use in a second device, and the optical fiber port identification device includes various modules for executing the optical fiber port identification method provided in the second aspect.

Optionally, the optical fiber port identification device includes: a receiving module, a first sending module, a second sending module, and a processing module, wherein the receiving module includes: a filter and a circulator; the receiving module includes: a filter and a circulator The processing module is respectively connected to the first sending module, the second sending module and the circulator, the circulator is connected to the filter and the first sending module, and the filter is connected to the The second sending module and the first optical fiber link; the processing module is used to control the first sending module to send the first waveband signal to the circulator; the circulator is used to send the filter The filter sends the signal from the first sending module; the filter is used to send the signal from the circulator to the first optical fiber link; the filter is used to receive the modulation on the first optical fiber link The signal in the first waveband reflected by the optical unit, and the signal from the first optical fiber link is sent to the circulator; the circulator is used to send the signal from the filter to the processing module; The processing module is used to control the second sending module to send the encoded signal to the filter according to the signal from the circulator; the filter is used to send the encoded signal to the first optical fiber link The signal of the second sending module.

In a fifth aspect, a communication system is provided. The communication system includes: a first device, and a plurality of optical fiber links connected to the first device, the optical fiber link is provided with an optical fiber port, and the optical fiber There are multiple dimming units corresponding to the port, and the arrangement of the dimming units on different optical fiber links is different; the dimming unit is used to reflect the signal in the first waveband, and the optical fiber link is dimmed The sum of the reflectivity of the unit to the signals of the first waveband is less than or equal to 1, and the first device includes: the optical fiber port identification device provided in the third aspect.

Optionally, the communication system further includes: a second device, and the first device is connected to the second device through a first optical fiber link; the second device includes: the optical fiber port identification provided by the fourth aspect Device.

In a sixth aspect, an optical fiber port identification method is provided, which is characterized in that it is used in the communication system provided in the fifth aspect. The method includes: the first device obtains each optical fiber link among the plurality of optical fiber links. The target signal of the optical fiber port on the road, the target signal of the optical fiber port is used to indicate: the arrangement rule of the dimming unit corresponding to the optical fiber port on the optical fiber link; the first device receives the optical fiber from the first optical fiber The encoded signal of the link, the plurality of optical fiber links include the first optical fiber link, and the encoded signal is obtained by reflecting the signal in the first wavelength band by the dimming unit on the first optical fiber link The first device identifies the optical fiber port on the first optical fiber link based on the encoded signal and the target signal of the optical fiber port on each optical fiber link.

Optionally, the arrangement rule of the dimming unit on the optical fiber link includes: the number of the dimming unit on the optical fiber link, and the number of the dimming unit on the optical fiber link At least one of the position and the distance between adjacent dimming units on the optical fiber link.

Optionally, the optical fiber link is provided with a plurality of optical fiber ports, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than a distance threshold, and is divided by the plurality of optical fiber ports. The distance of the other optical fiber ports except for each optical fiber port is greater than or equal to the distance threshold; the first device performs a correction on the first optical fiber port according to the encoded signal and the target signal of the optical fiber port on each optical fiber link. The identification of the optical fiber ports on the optical fiber link includes: the first device determines the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; wherein the detection sub-signal is determined by the The plurality of dimming units corresponding to each optical fiber port are obtained after reflecting the signal in the first waveband; the first device detects sub-signals corresponding to each optical fiber port on the first optical fiber link, And the target signal of the optical fiber port on each optical fiber link, identifying the optical fiber port on the first optical fiber link.

Optionally, the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; the plurality of dimming units corresponding to each optical fiber port are arranged in the plurality of At least part of the target positions in the target position, and the at least part of the target position includes: the first target position and the last target position in the plurality of target positions; the first device determines that the coded signal corresponds to The detection sub-signal of each optical fiber port on the first optical fiber link includes: the first device determines that the encoded signal corresponds to the The detection sub-signal of each optical fiber port on the first optical fiber link; wherein, the unit duration is: the signal in the first waveband is transmitted on the optical fiber link between adjacent target positions among the plurality of target positions The length of time required.

Optionally, in the target direction, the arrangement rules of the dimming units corresponding to the fiber ports in the same order on different fiber links are different, and the target direction includes: a direction close to or away from the first device; the method It also includes: the first device determines the sequence corresponding to each optical fiber port on each optical fiber link, and the sequence corresponding to the optical fiber port is: in the target direction, the optical fiber port is located in the optical fiber chain. The sequence among the multiple optical fiber ports on the road; the first device according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link, and the target signal of the optical fiber port on each optical fiber link, Identifying the optical fiber port on the first optical fiber link includes: in the target direction, if the detection sub-signal corresponding to the optical fiber port in the target order on the first optical fiber link reflects the dimming unit The arrangement rule is consistent with the arrangement rule of the dimming unit indicated by the target signal of the first optical fiber port, and the first device recognizes the optical fiber port in the target order on the first optical fiber link as the first Optical fiber port, the first optical fiber port is any optical fiber port corresponding to the target order.

Optionally, the first device is connected to multiple branches, and each branch includes multiple branches; each first-level branch is connected to the first device, and each branch is connected to multiple downstream branches. The first-level branch is connected, and the next-level branches connected by different branches are different; the optical fiber link includes: one branch in each level of the multi-level branch; the optical fiber link is set The optical fiber ports include: the optical fiber ports on each branch near the first device; the arrangement of the dimming units corresponding to the optical fiber ports on different first branches is different, and the optical fiber ports on the multiple branches connected to the same branch correspond to The arrangement rules of the dimming units are different; the method further includes: the first device determines the port group corresponding to each optical fiber port, wherein the port group corresponding to the optical fiber port on each level 1 branch includes: The optical fiber port on each level 1 branch; the port group corresponding to the optical fiber port on each i-th level branch includes: the optical fiber port on each i-th level branch, and each i-th level branch The optical fiber port on the front i-1 level branch connected to the optical fiber port on the road, i≥2; the first device according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link, and each The target signal of the optical fiber port on the optical fiber link, and the identification of the optical fiber port on the first optical fiber link includes: detection of the first j optical fiber ports close to the first device on the first optical fiber link The arrangement rule of the dimming unit reflected by the sub-signal is consistent with the arrangement rule of the dimming unit indicated by the target signal of the port group corresponding to the second optical fiber port, the first device transfers the first optical fiber chain The j-th optical fiber port close to the first device on the road is identified as the second optical fiber port, and the second optical fiber port is any optical fiber port on the multiple optical fiber links.

Optionally, the multiple first-level branches are all connected to the first device through an initial branch; a part of the dimming unit corresponding to the optical fiber port is located on the branch where the optical fiber port is located, and the optical fiber port The other part of the corresponding dimming unit is located on the branch connected to the optical fiber port.

Optionally, before the first device receives the encoded signal from the first optical fiber link, the method further includes: the first device sends the signal in the first band to the first optical fiber link .

Optionally, the optical fiber system further includes: a second device, and the first device is connected to the second device through the first optical fiber link, and the dimming unit is also used to transmit the first device. Signals outside the band; before the first device receives the encoded signal from the first optical fiber link, the method further includes: the second device sends the signals in the first wavelength band to the first optical fiber link Signal; the second device receives the signal in the first waveband reflected by the dimming unit on the first optical fiber link; the second device is based on the signal received from the first optical fiber link , Sending an encoded signal to the first device through the first optical fiber link, and the wavelength of the encoded signal is outside the first wavelength band; the first device receives the encoded signal from the first optical fiber link, including : The first device receives the encoded signal sent by the second device through the first optical fiber link.

Optionally, the method further includes: the first device determines the reference signal of each optical fiber link, and the reference signal of the optical fiber link is used to indicate: Arrangement law; when the arrangement law of the dimming unit reflected by the coded signal is different from the arrangement law indicated by the reference signals of the multiple optical fiber links, the first device determines the first optical fiber The link is down.

Optionally, after the first device determines that the first optical fiber link is faulty, the method further includes: the first device determines the faulty link in the first optical fiber link according to the encoded signal Road section.

Optionally, the dimming unit includes: a grating.

Optionally, the bandwidth of the first waveband ranges from 2 nanometers to 10 nanometers, and/or the absolute value of the difference between the wavelength of the signal in the first waveband and the center wavelength of the first waveband is ≤ 5 nanometers .

Optionally, the first device includes: a first transmission module, a filter, a circulator, and a processing module; the processing module is respectively connected to the first transmission module and the circulator, and the circulator is connected to the A filter and the first sending module, and the filter is connected to the first optical fiber link; the first device sending a signal in the first band to the first optical fiber link includes: the The processing module controls the first sending module to send the first waveband signal to the circulator; the circulator sends the signal from the first sending module to the filter; the filter sends the signal from the first sending module to the filter; The first optical fiber link sends the signal from the circulator; the first device receives the encoded signal from the first optical fiber link, including: the filter receives the encoded signal from the first optical fiber link The filter sends the encoded signal from the first optical fiber link to the circulator; the circulator sends the encoded signal from the filter to the processing module.

Optionally, the second device includes: a first sending module, a filter, a circulator, a second sending module, and a processing module; the processing module is respectively connected to the first sending module, the second sending module, and The circulator, the circulator connects the filter and the first transmission module, and the filter connects the second transmission module and the first optical fiber link; the second device sends the The first optical fiber link sends the signal in the first waveband, including: the processing module controls the first sending module to send the signal of the first waveband to the circulator; and the circulator sends the signal to the filter The device sends the signal from the first sending module; the filter sends the signal from the circulator to the first optical fiber link; the second device receives the dimming on the first optical fiber link The signal in the first waveband reflected by the unit includes: the filter receives the signal in the first waveband reflected by the dimming unit on the first optical fiber link; The circulator sends the signal from the first optical fiber link; the circulator sends the signal from the filter to the processing module; the second device is based on the signal received from the first optical fiber link , Sending an encoded signal to the first device through the first optical fiber link includes: the processing module controls the second sending module to send the encoded signal to the filter according to the signal from the circulator Signal; the filter sends a signal from the second sending module to the first optical fiber link.

In a seventh aspect, a computer storage medium is provided, and a computer program is stored in the storage medium, and when the computer program is executed by a processor, the optical fiber port identification method of the first aspect or the second aspect is implemented.

In an eighth aspect, a computer program product containing instructions is provided, when the computer program product runs on a network device, the network device executes the optical fiber port identification method described in the first aspect or the second aspect.

In a ninth aspect, a network device is provided. The network device includes: at least one processor, at least one interface, memory, and at least one communication bus. The processor is configured to execute a program stored in the memory to implement the first The optical fiber port identification method according to the first aspect or the second aspect.

For the beneficial effects of the second aspect to the ninth aspect described above, reference may be made to the beneficial effects of the first aspect described above, and the embodiments of the present application will not be repeated here.

Description of the drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application;

2 is a schematic structural diagram of another communication system provided by an embodiment of this application;

FIG. 3 is a schematic structural diagram of a PON system provided by an embodiment of the application;

4 is a schematic diagram of the reflection of optical signals by a dimming unit provided by an embodiment of the application;

FIG. 5 is a flowchart of a method for identifying an optical fiber port according to an embodiment of the application;

6 is a schematic structural diagram of an optical fiber port identification device provided by an embodiment of the application;

FIG. 7 is a timing diagram of an encoded signal sent by a second device according to an embodiment of the application;

FIG. 8 is a schematic structural diagram of another communication system provided by an embodiment of this application;

FIG. 9 is a schematic structural diagram of another communication system provided by an embodiment of this application;

FIG. 10 is a schematic diagram of a failure of an optical fiber link according to an embodiment of the application;

FIG. 11 is a schematic diagram of a failure of another optical fiber link provided by an embodiment of the application;

FIG. 12 is a schematic diagram of a failure of another optical fiber link provided by an embodiment of the application;

FIG. 13 is a schematic diagram of a failure of another optical fiber link provided by an embodiment of the application;

14 is a schematic structural diagram of an optical fiber port identification device provided by an embodiment of the application;

15 is a schematic structural diagram of another optical fiber port identification device provided by an embodiment of the application;

FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of this application.

Detailed ways

In order to make the principles, technical solutions, and advantages of the present application clearer, the implementation manners of the present application will be described in further detail below in conjunction with the accompanying drawings.

The technical solution provided in this application can be applied to a communication system. The communication system includes multiple optical fiber links and multiple devices connected by the multiple optical fiber links.

Illustratively, FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of this application. In FIG. 1, it is taken as an example that multiple optical fiber links in the communication system can be independent of each other. As shown in FIG. 1, the multiple optical fiber links in the communication system are: optical fiber link a1 to optical fiber link a8, and multiple devices in the communication system include device 10 and device 11.

In FIG. 1, the device 10 and the device 11 are connected to the optical fiber link a1 to the optical fiber link a8 as an example. Optionally, each device in the communication system can be connected to one or more optical fiber links in the communication system. connect. For example, as shown in Figure 2, multiple devices in the communication system include: device 10 to device 18, where device 10 is connected to one end of optical fiber link a1 to fiber link a8, and device 11 to device 18 are Each device is connected to the other end of the optical fiber link a1 to the optical fiber link a8 in a one-to-one correspondence.

Further, each optical fiber link in the communication system may be provided with an optical fiber port and multiple dimming units corresponding to the optical fiber ports, and the arrangement of the dimming units on different optical fiber links is different. It should be noted that each optical fiber link may be provided with at least one optical fiber port with corresponding multiple dimming units. In the embodiment of the present application, each optical fiber link is provided with multiple optical fiber ports, and each The optical fiber ports all have multiple corresponding dimming units as an example.

For example, in the case where the respective optical fiber links are independent of each other, the optical fiber ports on each optical fiber link may include: two optical fiber ports at both ends of the optical fiber link. As shown in Figure 1 and Figure 2, the fiber ports on the fiber link a1 include: fiber ports b1 and c1, the fiber ports on the fiber link a2 include: fiber ports b2 and c2, and the fiber ports on the fiber link a3 include: : Fiber ports b3 and c3, fiber ports on fiber link a4 include: fiber ports b4 and c4, fiber ports on fiber link a5 include: fiber ports b5 and c5, fiber ports on fiber link a6 include: fiber Ports b6 and c6, the fiber ports on the fiber link a7 include: fiber ports b7 and c7, and the fiber ports on the fiber link a8 include: fiber ports b8 and c8.

Optionally, the communication system provided in the embodiment of the present application may be a passive optical network (PON) system or other communication system, as long as the communication system includes devices connected through multiple optical fiber links. The PON system may be an Ethernet passive optical network (ethernet passive optical network, EPON) system or a gigabit passive optical network (gigabit capable passive optical network, GPON) system, etc., which is not limited in the embodiment of the present application. As shown in Figure 3, the PON system includes: optical line terminal (OLT), optical dstribution frame (ODF), home cable transfer box, and optical line terminal (ONT) (Or optical network unit (OUN), ONT is taken as an example in Figure 3) and multiple devices in the network. It should be noted that the PON system may include at least one OLT (only one OLT is shown in FIG. 3) and multiple ONTs (only three ONTs are shown in FIG. 3), and each OLT is connected with multiple ONTs. When the PON system includes multiple OLTs, there may be a connection relationship between the multiple OLTs. When the communication system may be a PON system, the equipment in the communication system may include: equipment connected through multiple optical fiber links in the PON system, such as an OLT and multiple ONTs, or OLT and ODF, or multiple OLTs.

The optical fiber links in the current communication system are usually more complicated, and there are more optical fiber ports on each optical fiber link. Therefore, it is often necessary to identify the fiber port on the fiber link to accurately connect the device to the corresponding fiber link. In addition, a large number of optical fiber passive components are often installed on optical fiber links, and optical fiber passive components are easily damaged by the external environment (such as fiber port damage, fiber bending or fiber breakage, etc.), resulting in fiber link failure and communication The optical fiber communication of the system is interrupted. Therefore, there is an urgent need for a method suitable for optical fiber port identification of relatively complex optical fiber links and fault detection of optical fiber links.

In the embodiment of the present application, multiple dimming units corresponding to the fiber port are provided on each of the multiple fiber links to realize the identification of the fiber ports on the fiber links and the monitoring of the fiber links. Troubleshooting.

For example, when a certain device in the communication system needs to identify the fiber port on a certain fiber link (referred to as the first fiber link) and detect the failure of the fiber link, the device can first determine multiple The target signal of each fiber port on the fiber link, the target signal of the fiber port is used to indicate: the arrangement rule of the dimming unit corresponding to the fiber port on the fiber link; after that, the device needs to receive the signal from the first fiber link Encode the signal, and identify the optical fiber port on the first optical fiber link and perform fault detection on the first optical fiber link according to the previously acquired target signal of each optical fiber port and the encoded signal. It should be noted that the dimming unit is used to reflect the signal in the first waveband, and the sum of the reflectivity of all the dimming units on each optical fiber link to the signal in the first waveband is less than or equal to 1. The above-mentioned encoded signal may be The signal obtained after the dimming unit on the first optical fiber link reflects the signal in the first waveband, and the signal can reflect the arrangement law of the dimming unit on the first optical fiber link. Therefore, after comparing the previously acquired target signal of each optical fiber port with the encoded signal, the device can identify the optical fiber port on the first optical fiber link and realize the failure of the first optical fiber link. Detection.

Multiple dimming units corresponding to each optical fiber port on each optical fiber link can be arranged near the optical fiber port. When the distance between the dimming unit corresponding to each fiber port and the fiber port is relatively close (for example, less than the distance threshold), and there are multiple fiber ports on the fiber link, the dimming unit corresponding to each fiber port is related to the multiple fiber ports. The other fiber ports in the fiber port are far away (for example, greater than or equal to the distance threshold). For example, the multiple dimming units corresponding to the fiber port b1 in Figures 1 and 2 include: 5 dimming units on the fiber link a1 close to the fiber port b1, and the multiple dimming units corresponding to the fiber port c1 include: fiber chain The five dimming units on the road a1 close to the optical fiber port c1, and the multiple dimming units corresponding to the optical fiber port b2 include: 4 dimming units on the optical fiber link a2 close to the optical fiber port b2.

Each optical fiber link has a plurality of target positions corresponding to each optical fiber port, and the plurality of target positions are arranged at equal intervals; a plurality of dimming units corresponding to each optical fiber port are arranged at least part of the corresponding optical fiber port At the target position, and the at least part of the target position includes: the first target position and the last target position corresponding to the optical fiber port. For example, as shown in Figure 1, the optical fiber link a1 is provided with five target positions corresponding to the optical fiber port b1, namely positions w1 to w5. The five target positions are arranged at equal intervals, and the five target positions corresponding to the optical fiber port b1 are arranged at equal intervals. The light unit can be located at these 5 target positions. In the same way, 5 target positions corresponding to each fiber port can also be set on other optical fiber links, and the 5 target positions can be all equipped with dimming units, or some of the target positions can be equipped with dimming units. Unit, and another part of the target position is not provided with a dimming unit. However, the first target position and the last target position of the 5 target positions are both provided with a dimming unit.

The arrangement rules of dimming units on different optical fiber links in multiple optical fiber links are different. The arrangement of the dimming units on the eight optical fiber links a1 to a8 in Fig. 1 or Fig. 2 are different from each other. Among them, the arrangement of dimming units on the fiber link includes: the number of dimming units on the fiber link, the position of the dimming unit on the fiber link, and the distance between adjacent dimming units on the fiber link At least one of them. In the embodiment of the present application, the arrangement rule includes: the number of dimming units on the optical fiber link, the position of the dimming unit on the optical fiber link, and the interval between adjacent dimming units on the optical fiber link as an example. When the arrangement rules of the dimming units on the two optical fiber links are different, it can be known that at least one of the number, position, and spacing of the dimming units on the two optical fiber links is different.

For example, on the basis of different arrangement rules of dimming units on different fiber links, if multiple fiber links are independent of each other, in the target direction, the dimming corresponding to the fiber ports in the same order on different fiber links The arrangement rules of the units are different, and the target direction can be any direction. For example, as shown in Figure 1 or Figure 2, it is assumed that the optical fiber port close to the device 10 in the optical fiber link is the first optical fiber port, and it is indicated by whether a dimming unit is provided on multiple target positions corresponding to each optical fiber port The arrangement rule of the dimming unit corresponding to the optical fiber port. Then, the arrangement rule of the 5 dimming units corresponding to the first fiber port b1 on the optical fiber link a1 can be expressed as 11111, which means that the 5 target positions corresponding to the fiber port b1 are all provided with dimming units. The arrangement rule of the 5 dimming units corresponding to the first fiber port b2 on the fiber link a2 can be expressed as 11101, which means that the first to third target positions and the fifth target position corresponding to the fiber port b1 are set There is a dimming unit, but the 4th target position is not equipped with a dimming unit. It can be seen that the arrangement of the 5 dimming units corresponding to the first fiber port b1 on the fiber link a1 (11111) is the same as the 5 dimming units corresponding to the first fiber port b2 on the fiber link a2 The arrangement rules (11101) are not the same.

It can be seen that, in the embodiment of the present application, the dimming unit corresponding to each optical fiber port has a unique arrangement rule. Therefore, the optical fiber port identification or fault detection of the optical fiber link can be realized based on the arrangement rule.

Furthermore, when multiple optical fiber ports are provided on the optical fiber link, and multiple dimming units corresponding to each optical fiber port, the distance between different dimming units corresponding to the same optical fiber port on the optical fiber link is small, and the optical fiber chain The distance between different dimming units corresponding to different fiber ports on the road is relatively large. As shown in Figure 1 or Figure 2, the distances between the five dimming units corresponding to the fiber port b1 on the fiber link a1 are small, but the five dimming units corresponding to the fiber port b1 on the fiber link a1 and the fiber port c1 The corresponding 5 dimming units have a larger spacing. It should be noted that these pitches are only schematically shown in the drawings of the specification. Usually the distance between different dimming units corresponding to the same fiber port on the fiber link is small, such as 10 cm, 20 cm, etc., and the distance between different dimming units corresponding to different fiber ports on the fiber link is often larger, for example, 100 meters , 1000 meters, 10000 meters, etc.

The dimming unit in the embodiment of the present application is used to reflect the signal in the first waveband, and the sum of the reflectance of the dimming unit on the optical fiber link to the signal in the first waveband is less than or equal to 1. The dimming unit can also be used to transmit signals outside the first waveband. It can be seen that the dimming unit is a structure with a transflective function, such as a grating (such as a chirped fiber bragg grating (CFBG)), a transflective film, and the like. It should be noted that the "transflective" here means that part of the signal is transmitted and part of the signal is reflected, and the proportion of the transmitted signal and the proportion of the reflected signal may be equal or different.

The sum of the reflectivities of all the dimming units on each optical fiber link to the first waveband signal is less than or equal to 1, which can prevent some dimming units on the optical fiber link from reflecting all the first waveband signals. In this way, when the first waveband signal is transmitted on the optical fiber link, each dimming unit on the optical fiber link can receive the first waveband signal, and all the first waveband signals can be received. The signal is reflected.

Optionally, the range of the reflectivity of each dimming unit to the signal of the first waveband is [1%, 10%]. When the first waveband signal is transmitted on the optical fiber link, the reflectance is set to be small, which can reduce the superposition of the first waveband signal reflected by multiple dimming units on the optical fiber link, and weaken the dimming unit The ghosting phenomenon caused by the superposition of the reflected signals.

For example, FIG. 4 is a schematic diagram of the reflection of an optical signal by a dimming unit provided in an embodiment of the application. As shown in FIG. The reflectivity of the unit to the optical signal of the corresponding wavelength. It can be seen from Figure 4 that the first wavelength band may include 1570 nm to 1580 nm, the light reflectivity of the dimming unit for light from 1570 nm to 1580 nm is greater than zero and less than or equal to 2%, and the center wavelength of the dimming unit is 1575 nm.

The parameters of each dimming unit on multiple optical fiber links may be the same. For example, when the dimming unit is CFBG, the parameters of the dimming unit include: the length of the CFBG (such as 1 cm, 2 cm, etc.), the chirp coefficient, and the like.

Based on the communication system in which each optical fiber link is independent of each other provided by the embodiment of the application (the communication system shown in FIG. 1 or FIG. 2), the embodiment of the application provides a method for identifying an optical fiber port for the communication system. As shown in Figure 5, the optical fiber port identification method includes:

S101. The first device determines the target signal of each optical fiber port on the multiple optical fiber links, and the target signal of the optical fiber port is used to indicate: the arrangement rule of the dimming unit corresponding to the optical fiber port on the optical fiber link.

The first device may be any device in the communication system that can obtain the target signal of each optical fiber port on multiple optical fiber links, such as the device 10 in the communication system shown in FIG. 1. The first device may be located in a central office (centeroffice, CO), which is also called a site. When the communication system is a PON system, the first device may be an OLT.

Multiple optical fiber links may all be connected to the first device. For the explanation of the optical fiber ports and the dimming unit provided on the optical fiber links, reference may be made to the foregoing embodiments, and the embodiments of the present application will not be repeated here.

The first device needs to determine the target signal of each optical fiber port on the multiple optical fiber links to which it is connected in S101. Among them, the target signal of each optical fiber port is used to indicate: the arrangement rule of the multiple dimming units corresponding to the optical fiber port on the optical fiber link. The target signal of each fiber port can be stored in the first device by the staff.

For example, the target signal of each optical fiber port may be used to indicate the arrangement law of multiple dimming units corresponding to the optical fiber port. For example, the target signal of each optical fiber port may include multiple bits, the multiple bits correspond to multiple target positions corresponding to the optical fiber port, and the value of each bit is used to indicate whether the corresponding target position is set There is a dimming unit. When the value of the bit is 1, it means that the target position corresponding to the bit is provided with a dimming unit, and when the value of the bit is 0, it means that the target position corresponding to the bit is not provided with a dimming unit.

Taking the communication system shown in FIG. 1 as an example, the target signal of each optical fiber port in FIG. 1 obtained according to this rule can be as shown in Table 1.

Table 1

Fiber port

Target signal

b1	11111
b2	11101
b3	11011
b4	10111
b5	11001
b6	10011
b7	10101
b8	10001
c1	11111
c2	11101
c3	11011
c4	10111
c5	11001
c6	10011
c7	10101
c8	10001

S102. The second device sends a signal in the first band to the first optical fiber link.

The optical fiber system further includes a second device, and the first device is connected to the second device through the first optical fiber link. For example, the second device may be the device 11 in the communication system shown in FIG. 1. The second device may be located in a central office, for example, the second device and the first device are located in the same central office, or the second device and the first device are located in a different central office. The second device may also be located outside the central office, which is not limited in this embodiment of the application. For example, when the communication system is a PON system, the second device may be a device such as an ONT, an OUN, an ODF, which is different from the first device, or an OLT, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the identification of the optical fiber port of the first optical fiber link is taken as an example. The first optical fiber link may be any optical fiber link among the above-mentioned multiple optical fiber links. The identification process can refer to the process of identifying the optical fiber port of the first optical fiber link.

When it is necessary to identify the fiber port of the first optical fiber link, the second device can send a signal in the first wavelength band (such as a signal of a certain wavelength in the first wavelength band) to the first optical fiber link to facilitate the first optical fiber link. The dimming unit on the link can reflect the signal back to the second device after receiving the signal. In addition, the signal in the first waveband reflected by the dimming unit on the optical fiber link can reflect the arrangement of the dimming unit on the optical fiber link. Therefore, the subsequent operations can be based on the first waveband reflected by the dimming unit. The signal of the optical fiber port is identified.

Optionally, the bandwidth of the first waveband can range from 2 nanometers to 10 nanometers, or other ranges (such as 3 nanometers to 12 nanometers, etc.). The absolute value of the difference in wavelength can be less than or equal to 5 nanometers. In this way, since the bandwidth of the first waveband is larger, and the center wavelength of the first waveband is closer to the wavelength of the first waveband signal, even if the dimming unit is affected by the environment, the center of the waveband reflected by the dimming unit The wavelength shift can still ensure that the dimming unit can reflect the signal in the first waveband emitted by the second device, and avoid the function of the dimming unit from being affected by the environment.

In addition, in the embodiment of the present application, the reflectance of the dimming unit to the signal of the first waveband is set to be small, for example, the range of reflectance is [1%, 10%]. In this way, after the second device sends the first waveband signal to the first optical fiber link, the superposition of the first waveband signal reflected by each dimming unit on the first optical fiber link is less, thereby reducing the Ghosting phenomenon caused by signal superposition.

Optionally, the structure of the second device may refer to the structure of the optical fiber port identification device as shown in FIG. 6, please refer to FIG. 6. The optical fiber port identification device includes: a first transmission module 601, a filter 602, a circulator 603, The second sending module 604 and the processing module 605 (such as a microcontroller unit (MCU)). The processing module 605 is respectively connected to the first sending module 601, the second sending module 604, and the circulator 603, the circulator 603 is connected to the filter 602 and the first sending module 601, and the filter 602 is connected to the second sending module 604 and the aforementioned first sending module. Fiber optic link. Wherein, the first sending module 601 is used to send a signal to the circulator 603; the circulator 603 is used to send the signal from the first sending module 601 to the filter 602 and the signal from the filter 602 to the processing module 605; The filter 602 is used to send the signals from the circulator 603 and the second sending module 604 to the first optical fiber link, and the signal from the first optical link to the circulator 603; the processing module 605 is used to control the first optical fiber link. The sending module 601 sends signals to the circulator 603, and controls the second sending module 604 to send signals to the filter 602. The first sending module 601 is used to send out signals in the first waveband, and the second sending module 604 is used to send out signals outside the first waveband.

In S102, the processing module 605 in the second device can control the first sending module 601 to send the signal in the first band to the circulator 603; after that, the circulator 603 will send the signal from the first sending module 601 to the filter 602 Finally, the filter 602 will send the signal from the circulator 603 to the first optical fiber link. In this way, the purpose of sending the signal in the first band to the first optical fiber link is achieved.

S103. The second device receives the signal in the first waveband reflected by the dimming unit on the first optical fiber link.

Assuming that the structure of the second device is shown in Figure 6, in S103, the filter 602 in the second device will receive the signal in the first band reflected by the dimming unit on the first optical fiber link and send it to the circulator 603 sends the signal from the first optical fiber link, and then the circulator 603 sends the signal from the filter 603 to the processing module 605. In this way, it is realized that the processing module 605 in the second device receives the signal in the first waveband reflected by the dimming unit on the first optical fiber link.

S104. The second device sends an encoded signal to the first device through the first optical fiber link according to the signal received from the first optical fiber link.

After receiving the signal in the first waveband reflected by the dimming unit on the first optical fiber link, the second device may send the encoded signal to the first device through the first optical fiber link. In addition, the wavelength of the encoded signal sent by the second device to the first device through the first optical fiber link is outside the first waveband, and the above-mentioned dimming unit is also used to transmit signals outside the first waveband. In this way, the first waveband can be guaranteed. The second device successfully transmits the encoded signal to the first device. For example, the center wavelength of the first wavelength band is 1575 nanometers and the bandwidth is 10 nanometers, and the center wavelength of the second wavelength band may be 1310 nanometers.

The encoded signal is generated according to the signal reflected by the dimming unit on the first optical fiber link. Therefore, the encoded signal can reflect the arrangement rule of the dimming unit on the first optical fiber link.

When the second device converts the received signal into an encoded signal, the second device may perform at least one type of processing on the received signal. For example, the second device first performs photoelectric conversion on the received signal to convert the received signal from an optical signal to an electrical signal; after that, the second device performs clock data recovery processing on the electrical signal to obtain a time domain The encoded electrical signal, the electrical signal may include time-domain information that is used to characterize the signal reflected by each dimming unit on the first optical fiber link; finally, the second device may generate the signal based on the electrical signal encoded in the time domain The coded signal outside the first band mentioned above.

For example, take the first optical fiber link as the optical fiber link a1 in FIG. 1, the first device as the device 10, and the second device as the device 11 as an example. If the first optical fiber link is not faulty, the signal in the first waveband sent by the second device can be transmitted to each dimming unit, and the timing diagram of the encoded signal sent by the second device can be as shown in FIG. 7. Please refer to Figure 7. There are 10 high potentials in this timing diagram, and these 10 high potentials can correspond to 10 dimming units on the optical fiber link a1, and the corresponding high potential of each dimming unit is used to characterize the dimming. The first waveband signal reflected by the unit reaches the device 11.

Since the 5 dimming units corresponding to the fiber port c1 in the fiber link a1 are closer to the device 11, and the 5 dimming units corresponding to the fiber port b1 are farther from the device 11, the first 5 of these 10 high potentials are One high potential is used to characterize the first waveband reflected by the 5 dimming units corresponding to the fiber port c1 and reaching the device 11, and the last five high potentials are used to characterize the first waveband reflected by the five dimming units corresponding to the fiber port b1 The signal arrives at device 11. In addition, since the dimming units corresponding to each fiber port are relatively close, and the 5 dimming units corresponding to the fiber port c1 are far away from the 5 dimming units corresponding to the fiber port b1, the first 5 high The time delay of each high potential among the potentials is small, and the time delay of each high potential of the last five high potentials is also small, and the time delay between the first five high potentials and the last five high potentials is relatively large.

Assuming that the structure of the second device is shown in Figure 6, in S104, the processing module 605 in the second device can control the second sending module 604 to send the above-mentioned encoded signal to the filter 602 according to the signal from the circulator 603, so as to facilitate The filter 602 transmits the signal from the second transmission module 602 to the first optical fiber link. In this way, the encoded signal is sent to the first device through the first optical fiber link.

It should be noted that if the second device needs to perform photoelectric conversion and clock data recovery processing on the signal received from the first optical fiber link, as shown in FIG. 6, the second device may also include a photoelectric conversion module 606 and The clock data recovery module 607, the photoelectric conversion module 606 and the clock data recovery module 607 are connected in series between the circulator 603 and the processing module 605. The photoelectric conversion module 606 is used to perform photoelectric conversion on the signal from the circulator 603 and send the photoelectrically converted signal to the clock data recovery module 607; the clock data recovery module 607 is used to perform clock data on the signal from the photoelectric conversion module 606 Resume processing, and send the signal after the clock data recovery processing to the processing module 605. At this time, the processing module 605 may control the second sending module 604 to send the above-mentioned encoded signal based on the signal from the clock data recovery processing module 607.

Optionally, the second device in FIG. 6 may further include an electric switch 608, and the processing module 605 may use the electric switch 608 to select the modules that need to be controlled among the first sending module 601 and the second sending module 604.

In addition, when the second device needs to transmit data to the first device, the second device can send the data signal carrying the data to the first device through the first optical fiber link according to the data that needs to be transmitted (belonging to the data signal outside the first band). Signal). For example, the processing module 605 may control the second sending module 604 to send the data signal to the filter 602 according to the data to be transmitted, so that the filter 602 sends the data signal to the first device through the first optical fiber link.

S105. The first device identifies the optical fiber port on the first optical fiber link according to the target signal and the encoded signal of each optical fiber port.

For example, S105 may include:

S1051. The first device determines a detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal.

After receiving the above-mentioned encoded signal, the first device may first process the encoded signal to identify the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; wherein, the detection sub-signal corresponding to the optical fiber port It is obtained by reflecting the signal in the first waveband by all the dimming units corresponding to the fiber port.

Optionally, the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; a plurality of dimming units corresponding to each optical fiber port are arranged on at least a part of the plurality of target positions, And at least part of the target position includes: the first target position and the last target position among the multiple target positions. When the first device identifies the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal, the optical fiber link between adjacent target positions among the plurality of target positions may be determined based on the signal in the first band The length of time required for the uplink transmission (referred to as the unit time length), and the number of target positions corresponding to each fiber port, determine the detection sub-signal corresponding to each fiber port on the first fiber link in the encoded signal.

Taking the optical fiber link a1 shown in Figure 1 as the first optical fiber link as an example, please refer to Figure 1 and Figure 7. The first device in the identification coded signal corresponds to the detection sub-signal of each optical fiber port on the first optical fiber link At the same time, the first cycle of the coded signal can be detected first. For example, in each cycle of detection, the first device first detects the first high potential in the received encoded signal (the first high potential from left to right in FIG. 7). After detecting the first high potential, the first device may detect the position of the coded signal every unit time, and stop the detection after the fourth detection. In the process of each detection, the first device needs to determine whether the potential of the encoded signal at the current moment is a high potential or a low potential. After the fourth detection, the first device can detect the first high potential according to the first detection, and As a result of these four detections, the detection sub-signal corresponding to the dimming unit corresponding to the first fiber port (c1) is generated, such as 11111. It should be noted that the number of times that the first device detects positions in the encoded signal every unit of time can be one less than the number of target positions corresponding to each fiber port; in Figure 1, there are 5 targets corresponding to each fiber port. The position is taken as an example, so the number of times of detecting the position every unit duration in the coded signal is 4.

After that, after the detection of the first cycle above, the first device can continue to detect the encoded signal for the second cycle to obtain the detector corresponding to the dimming unit corresponding to the second fiber port (b1) Signal, such as 11111. It should be noted that after the detection of the second cycle ends, the first device can still continue to perform more cycles of detection of the encoded signal until the entire detection of the encoded signal is completed. The coded signal corresponding to Fig. 7 ends the detection after two cycles of detection.

S1052. The first device identifies the optical fiber port on the first optical fiber link according to the target signal of each optical fiber port and the detection sub-signal corresponding to each optical fiber port on the first optical fiber link.

After the first device obtains the target signal of each optical fiber port in the communication system and the detection sub-signal corresponding to each optical fiber port on the first optical fiber link, it can compare the two parts of the signal to identify the first optical fiber link Various fiber ports on the road.

For example, when multiple fiber links are independent of each other, in the target direction, the arrangement rules of the dimming units corresponding to the same order of fiber ports on different fiber links are different, and the target direction includes: approaching or away from the first The direction of the device. At this time, the first device not only needs to obtain the target signal of each optical fiber port in the communication system, but also needs to determine the sequence corresponding to each optical fiber port in each optical fiber port. Wherein, the sequence corresponding to each optical fiber port is: in the above-mentioned target direction, the sequence of the optical fiber port among the multiple optical fiber ports on the optical fiber link where it is located.

In S1052, the first device needs to compare the detection sub-signals of the optical fiber ports in each order (order in the target direction) on the first optical fiber link, and compare the target signals of each optical fiber port in the corresponding order in the communication system. To determine whether the arrangement rule of the dimming unit reflected by the detection sub-signal is consistent with the arrangement rule of the dimming unit indicated by the target signal. In the target direction, if the arrangement rule of the dimming unit reflected by the detection sub-signal corresponding to the fiber port of the target order on the first fiber link is the same as the arrangement of the dimming unit indicated by the target signal of the first fiber port When the rules are consistent, the first device recognizes the optical fiber port in the target order on the first optical fiber link as the first optical fiber port. Wherein, the first optical fiber port is any optical fiber port corresponding to the target order.

Still taking the communication system shown in FIG. 1 as an example, the corresponding order of each optical fiber port in the communication system can be as shown in Table 2. In Table 2, the target direction is the direction close to the device 10 as an example. The fiber port is the first fiber port. Of course, the target direction may also be a direction away from the device 10, at this time, the optical fiber port close to the device 10 is the first optical fiber port, which is not limited in the embodiment of the present application.

Table 2

Fiber port	Target signal	order
b1	11111	2
b2	11101	2
b3	11011	2
b4	10111	2
b5	11001	2
b6	10011	2
b7	10101	2
b8	10001	2
c1	11111	1
c2	11101	1
c3	11011	1
c4	10111	1
c5	11001	1
c6	10011	1
c7	10101	1
c8	10001	1

According to S1051, in the target direction (such as the direction close to the device 10), the detection sub-signal corresponding to the optical fiber port of the order 1 on the optical fiber link a1 is 11111, and the detection sub-signal corresponding to the optical fiber port of the order 2 on the optical fiber link a1 The sub signal is 11111. The first device can compare the detection sub-signal 11111 corresponding to the optical fiber port of the order 1 on the optical fiber link a1 with the target signal of the optical fiber ports c1 to c8 corresponding to the order 1 in Table 2; and compare the order on the optical fiber link a1 The detection sub-signal 11111 corresponding to the optical fiber port of 2 is compared with the target signal of the optical fiber ports b1 to b8 corresponding to order 2 in Table 2.

After comparison, it can be seen that the arrangement law reflected by the detection sub-signal 11111 corresponding to the optical fiber port with the order of 1 on the optical fiber link a1 is the same as the arrangement law indicated by the target signal 11111 of the optical fiber port c1, so the optical fiber link can be determined The fiber port with order 1 on a1 is the fiber port c1. The arrangement law reflected by the detection sub-signal 11111 corresponding to the optical fiber port with order 2 on the optical fiber link a1 is the same as the arrangement law indicated by the target signal 11111 of the optical fiber port b1. Therefore, it can be determined that the order on the optical fiber link a1 is The fiber port of 2 is fiber port b1. Therefore, in S7502, the first device can determine that in the direction close to device 10, the first fiber port on the fiber link a1 is c1, and the second fiber port is b1, thereby realizing the connection to the fiber link a1. Identification of fiber ports.

In summary, in the port identification method provided by the embodiments of the present application, since multiple dimming units corresponding to the fiber ports are provided on the optical fiber link, and the arrangement rules of the dimming units on different optical fiber links are different. Therefore, the arrangement rule of the dimming unit on the optical fiber link can be determined according to the encoded signal from the optical fiber link, and then the optical fiber port can be identified according to the arrangement rule.

Moreover, in the embodiments of the present application, there is no need to change the basic structure of the communication system, and only minor changes are made to part of the structure of the communication system, which reduces the cost of improvement and the complexity of project implementation, thereby facilitating subsequent management and maintenance.

It should be noted that, in the embodiment shown in FIG. 5, a plurality of optical fiber ports are provided on an optical fiber link, and a dimming unit corresponding to the plurality of optical fiber ports is taken as an example. Optionally, only one fiber port and a dimming unit corresponding to the fiber port may be provided on the fiber link. At this time, because the arrangement of the dimming units on different fiber links is different, different fiber ports The arrangement rules of the corresponding dimming units are different. The first device can identify the fiber port based on the arrangement rule of the dimming unit corresponding to each fiber port.

In addition, in the embodiments of the present application, since the number of optical fiber ports that can be detected can be increased by increasing the arrangement of the dimming unit, the link detection of the communication system with more optical fiber links and optical fiber ports is realized, thereby It can be applied to more complicated communication systems. Moreover, in the embodiments of the present application, the parameters of each dimming unit are the same. Therefore, there is no need to set multiple dimming units with different parameters on the optical fiber link; the wavelength of the signal in the first band emitted by the device can be less. (Such as unique), so that the device does not need to send out multiple signals of different wavelengths.

The communication system provided based on the embodiment of the present application can realize the identification of the optical fiber port. Further, based on the identification result of the optical fiber port, it can be determined whether the optical fiber port connected to the device is correct. The related art provides a method for judging whether the optical fiber port connected to the device is correct by using a detection device, but this method requires additional detection devices, which is less flexible; however, in the embodiment of the present application, no additional detection devices are required, which is flexible. High sex. The related technology also provides a way to use paper tags, electronic identification (eID) or radio frequency identification (radio frequency identification, RFID) technology as the label identification of the optical fiber port. The label on the fiber port identifies the fiber port. However, the manual error rate is high and the efficiency is low. In the embodiment of the present application, the device can automatically recognize the optical fiber port without manual participation, which improves the degree of automation and the identification efficiency of the optical fiber port, and reduces the error rate.

Further, the first device can refer to the port identification method shown in FIG. 5 to identify the ports on each optical fiber link in the communication system in turn, and generate the communication system based on the identified ports on each link Topological diagram.

It should be noted that, in the embodiment shown in FIG. 5, the coded signal received by the first device from the first optical fiber link is sent by the second device as an example. Of course, the port identification method may not include operations performed by the second device, such as S102, S103, and S104, and the first device needs to send signals in the first band to the first optical fiber link before S105, and receive the first optical fiber link. The signal in the first waveband reflected by the dimming unit on an optical fiber link, and the received signal is used as the above-mentioned encoded signal. At this time, the wavelength of the coded signal may be in the first waveband, the second device may not include the first sending module 601 and the circulator 603 in FIG. 6, and the structure of the first device may refer to FIG. 6. For example, when the first device sends a signal in the first band to the first optical fiber link, the processing module 605 may control the first sending module 601 to send the signal in the first band to the circulator 603, and then the circulator 603 sends the signal to the filter 602 sends the signal from the first sending module 601, and the filter 602 sends the signal from the circulator 603 to the first optical fiber link. When the first device receives the encoded signal from the first optical fiber link, the filter 602 receives the encoded signal from the first optical fiber link, and sends the encoded signal from the first optical fiber link to the circulator 603, and then the circulator 603 The encoded signal from the filter 602 is sent to the processing module 605.

In addition, when the first device needs to transmit data to the second device, the first device can send the data signal carrying the data to the second device through the first optical fiber link according to the data that needs to be transmitted (belonging to the data signal outside the first band). Signal). For example, the processing module 605 can control the second sending module 604 to send the data signal to the filter 602 according to the data to be transmitted, so that the filter 602 sends the data signal to the second device through the first optical fiber link.

In the above embodiments, the multiple optical fiber links in the communication system are independent of each other as an example. Optionally, the multiple optical fiber links may also overlap. For example, the multiple optical fiber links are formed after multiple branches are connected in a cascaded manner.

For example, as shown in FIG. 8, the device 10 is connected to a multi-level branch. Each level of the multi-level branch includes multiple branches. In FIG. 8, the multi-level branch includes the first-level branch and Take the second level branch, and each level of branch includes 8 branches as an example. Among them, the first-level branch includes: branch a11 to branch a18, the second-level branch includes: branch a21 to branch a28, branch a31 to branch a38, branch a41 to branch a48, branch A51 to branch a58, branch a61 to branch a68, branch a71 to branch a78, branch a81 to branch a88, and branch a91 to branch a98.

In the multi-level branch, each first-level branch is connected to the device 10, and each branch is connected to multiple lower-level branches, and the next-level branches connected to different branches are different. Please refer to Figure 8, each branch (first-level branch) from branch a11 to branch a18 is connected to 8 second-level branches, and branch a11 to branch a18 are connected to the second-level branch The branches are different. Among them, the eight second-level branches connected by branch a11 include: branch a21 to branch a28; the eight second-level branches connected by branch a12 include: branch a31 to branch a38; branch a31 is connected The 8 second-level branches include: branch a41 to branch a48; the 8 second-level branches connected by branch a41 include: branch a51 to branch a58; the 8 second-level branches connected by branch a51 Branch roads include: branch a61 to branch a68; the eight second-level branches connected by branch a61 include: branch a71 to branch a78; the eight second-level branches connected by branch a71 include: branch A81 to branch a88; the 8 second-level branches connected by branch a81 include: branch a91 to branch a98.

Optionally, each branch in the communication system may be connected by a splitter as shown in FIG. 8.

Each optical fiber link in the communication system includes: one branch of each level of the above-mentioned multi-level branch. For example, branch a11 and branch a21 can be used to form an optical fiber link, branch a11 and branch a28 can be used to form an optical fiber link, and so on, each of the first-level branch in Figure 8 and The 8 second-level branches connected are used to form a total of 8 optical fiber links, and the two-level branches in Figure 8 are used to form a total of 64 optical fiber links.

For each last-level branch in the multi-level branch, the branch can be connected to one device, and the devices connected to different last-level branches may be the same or different. Please continue to refer to Figure 8. The last level branch is the second level branch. 64 second level branches are connected to 64 devices one-to-one. Among them, the 64 devices include: device 11 to device 18, and device 21 To device 28, device 31 to device 38, device 41 to device 48, device 51 to device 58, device 61 to device 68, device 71 to device 78, and device 81 to device 88. Of course, the devices connected to the different last-level branches can also be the same. For example, similar to FIG. 1, all the second-level branches in FIG. 8 can also be connected to the device 11 (not shown in FIG. 8).

Further, each optical fiber link in the communication system may be provided with an optical fiber port and multiple dimming units corresponding to the optical fiber ports, and the arrangement of the dimming units on different optical fiber links is different. In the case of overlapping of various optical fiber links, the optical fiber ports provided on the optical fiber links include: the optical fiber ports of each branch in the optical fiber link that are close to the equipment connected to the first branch. As shown in FIG. 8, the optical fiber ports on the optical fiber link where the branch a11 and the branch a21 are located include: the optical fiber port b1 on the branch a11 close to the device 10 and the optical fiber port c21 on the branch a21 close to the device 10.

Optionally, the communication system provided by the embodiment of the present application may be a passive optical network (PON) system or other communication system, as long as the communication system includes devices connected through multiple optical fiber links. In the case of overlapping optical fiber links, if the communication system is a PON system, the equipment in the communication system may include: equipment connected through multiple optical fiber links in the PON system, such as an OLT and multiple ONTs.

In the case of overlapping of various optical fiber links, you can also refer to the situation that each optical fiber link is independent of each other, by setting multiple dimming units corresponding to the optical fiber port on each of the multiple optical fiber links, In order to realize the identification of the fiber port on the fiber link and the fault detection of the fiber link.

Multiple dimming units corresponding to each optical fiber port on each optical fiber link can be arranged near the optical fiber port. The distance between the dimming unit corresponding to each fiber port and the fiber port is less than the distance threshold, and when the fiber link is provided with multiple fiber ports, the distance between the dimming unit corresponding to each fiber port and other fiber ports is greater than or equal to Distance threshold. For example, the multiple dimming units corresponding to the fiber port b1 in FIG. 8 include: 5 dimming units on the branch a11 close to the fiber port b1, and the multiple dimming units corresponding to the fiber port a21 include: The five dimming units of the fiber port a21, and the multiple dimming units corresponding to the fiber port c28 include: 4 dimming units on the branch a28 close to the fiber port c28.

Optionally, in the case that multiple optical fiber links overlap, at least part of the dimming unit corresponding to each optical fiber port is located on the branch where the optical fiber port is located. For example, in FIG. 8, it is taken as an example that all the dimming units corresponding to each optical fiber port are located on the branch where the optical fiber port is located. Of course, it is also possible that a part of the dimming unit corresponding to each optical fiber port is located on the branch where the optical fiber port is located, and another part of the dimming unit is located outside the branch. For example, as shown in Figure 8, multiple first-level branches are connected to the first device through the initial branch a0. On the basis of Figure 8, as shown in Figure 9, each dimming unit can be corresponding to multiple A part of the dimming unit (such as 4 dimming units) is set on the branch where the optical fiber port is located, and another part of the dimming unit (such as 1 dimming unit) is set on the branch where the optical fiber port is connected. Branch road. Among them, the branch connected to the optical fiber port on the first-level branch is the initial branch, and the branch connected to the optical fiber port on the non-first-level branch is the previous branch of the branch.

Each optical fiber link has a plurality of target positions corresponding to each optical fiber port, and the plurality of target positions are arranged at equal intervals; a plurality of dimming units corresponding to each optical fiber port are arranged at least part of the corresponding optical fiber port At the target position, and the at least part of the target position includes: the first target position and the last target position corresponding to the optical fiber port.

The arrangement rules of dimming units on different optical fiber links in multiple optical fiber links are different. As shown in Figure 8, the arrangement of the dimming units on the 64 optical fiber links is different from each other. For example, the arrangement rules of the dimming units corresponding to the fiber ports on different first-level branches are different, and the arrangement rules of the dimming units corresponding to the fiber ports on the multiple branches connected to the same branch are different. For example, as shown in Figure 8, the eight optical fiber ports b1 to b8 on the eight first-level branches a11 to a18 have different arrangements of dimming units, for example, the arrangement of dimming units corresponding to b1 It can be expressed as 11111, and the arrangement rule of the dimming unit corresponding to b2 can be expressed as 11101. The arrangement of the dimming units corresponding to the eight fiber ports c21 to c28 on the second-level branch a21 to a28 is different. For example, the arrangement of the dimming unit corresponding to c21 can be expressed as 11111, and the dimming unit corresponding to c28 The arrangement rule of can be expressed as 11101. It can be seen that, in the embodiment of the present application, the dimming unit corresponding to each optical fiber port has a unique arrangement rule. Therefore, the optical fiber port identification or fault detection of the optical fiber link can be realized based on the arrangement rule.

Furthermore, when multiple optical fiber ports are provided on the optical fiber link, and multiple dimming units corresponding to each optical fiber port, the distance between different dimming units corresponding to the same optical fiber port on the optical fiber link is small, and the optical fiber chain The distance between different dimming units corresponding to different fiber ports on the road is relatively large. As shown in Figure 8, on the optical fiber link where branch a11 and branch a21 are located, the distance between the five dimming units corresponding to fiber port b1 is relatively small, but the five dimming units corresponding to fiber port b1 on the optical fiber link The distance between the light unit and the 5 dimming units corresponding to the fiber port c21 is relatively large.

For the dimming unit in the embodiment of the present application, reference may be made to the dimming unit in the embodiment where multiple optical fiber links are independent of each other, and details are not described in the embodiment of the present application.

Based on the communication system in which each optical fiber link provided by the embodiment of the present application overlaps (the communication system shown in FIG. 8 or FIG. 9), the embodiment of the present application provides an optical fiber port identification method for the communication system . For example, the optical fiber port identification method can refer to the optical fiber port identification method shown in FIG. Signal to identify the fiber port on the first fiber link. However, at this time, the process in which the first device recognizes the fiber port on the first fiber link is different from the process in which the first device recognizes the fiber port on the first fiber link in the embodiment shown in FIG. 5.

For example, in the case where the optical fiber links overlap, the first device needs to determine the port group corresponding to each optical fiber port before identifying the optical fiber ports on the first optical fiber link. Wherein, the port group corresponding to the fiber port on each level 1 branch includes: the fiber port; the port group corresponding to the fiber port on each level i branch includes: the fiber port and the front i connected to the fiber port -1 fiber port on the branch, i≥2.

When the first device recognizes the fiber port on the first fiber link, it can combine the detection sub-signals of the first j fiber ports on the first fiber link close to the first device to the port group corresponding to each fiber port The target signal is compared. Wherein, the target signal of the port group corresponding to each fiber port may be formed by sequentially arranging the target signals of each fiber port in the port group according to the arrangement order of the fiber ports. When the arrangement rule of the dimming unit reflected by the detection sub-signals of the first j fiber ports close to the first device on the first fiber link, the dimming unit indicated by the target signal of the port group corresponding to the second fiber port When the arrangement rules of are consistent, the first device may recognize the j-th optical fiber port on the first optical fiber link that is close to the first device as the second optical fiber port. Wherein, the second optical fiber port is any optical fiber port on multiple optical fiber links.

Taking the communication system shown in FIG. 8 as an example, the target signal of each fiber port shown in FIG. 8, the port group corresponding to the fiber port, and the target signal of the port group can all be as shown in Table 3. It should be noted that some fiber ports in Figure 8 are indicated by ellipses and are not shown. Table 3 does not show the target signals of these fiber ports, the port groups corresponding to these fiber ports, and the target signals of these port groups. .

table 3

Fiber port	Target signal of fiber port	Port group	Target signal of the port group
b1	11111	b1	11111
b2	11101	b2	11101
b3	11011	b3	11011
b4	11001	b4	11001
b5	10111	b5	10111
b6	11101	b6	11101
b7	10011	b7	10011
b8	10001	b8	10001
c21	11111	b1, c21	1111111111
c28	11101	b1, c28	1111111101
c31	11101	b2, c31	1110111101
c38	11011	b2, c38	1110111011
c41	11011	b3, c41	1101111011
c48	11001	b3, c48	1101111001
c51	11001	b4, c51	1100111001
c58	10111	b4, c58	1100110111

c61	10111	b5, c61	1011110111
c68	10101	b5, c68	1011110101
c71	10101	b6, c71	1110110101
c78	10011	b6, c78	1110110011
c81	10011	b7, c81	1001110011
c88	10001	b7, c88	1001110001
c91	11111	b8, c91	1000111111
c98	10001	b8, c98	1000110001

Assuming that the first optical fiber link includes: an initial branch a0, a branch a11, and a branch a21, the first device is the device 10, and the second device is the device 11. If the timing diagram of the encoded signal is also shown in Figure 7, it can be known from S1051 that the detection sub-signal corresponding to the first optical fiber port on the first optical fiber link close to the device 10 is 11111, and the first optical fiber link close to the device 10 The detection sub-signal corresponding to the second fiber port of is 11111. The first device may compare the detection sub-signal corresponding to the first optical fiber port on the first optical fiber link close to the device 10 with the target signal of each port group in Table 3; and the first optical fiber link close to the device 10 The detection sub-signals corresponding to the first two optical fiber ports are also compared with the target signals of each port group in Table 3.

After comparison, it can be seen that the arrangement rule reflected by the detection sub-signal 11111 corresponding to the first optical fiber port close to the device 10 on the first optical fiber link, and the arrangement rule indicated by the target signal 11111 of the port group corresponding to the optical fiber port b1 The same, therefore, it can be determined that the first optical fiber port close to the device 10 on the first optical fiber link is the optical fiber port b1. The arrangement rule reflected by the detection sub-signals 1111111111 corresponding to the first two optical fiber ports close to the device 10 on the first optical fiber link, and the arrangement indicated by the target signal 1111111111 of the port group (b1, c21) corresponding to the optical fiber port c21 The rule is the same, so it can be determined that the second optical fiber port close to the device 10 on the first optical fiber link is the optical fiber port c21. Thus, the identification of the optical fiber port on the first optical fiber link is realized.

Optionally, in the embodiment of the present application, the first device may also obtain the reference signal of each optical fiber link among the multiple optical fiber links, and perform a calculation on the first device according to the reference signal of the multiple optical fiber links and the encoded signal. A fiber link performs fault detection. Among them, the reference signal of the optical fiber link is used to indicate: the arrangement rule of all dimming units on the optical fiber link. When the arrangement law of the dimming unit reflected by the encoded signal is different from the arrangement law indicated by the reference signals of the multiple optical fiber links, the first device can determine that the first optical fiber link is faulty.

On the one hand, taking the communication system shown in FIG. 1 as an example, the reference signal of each optical fiber link in the communication system can be as shown in Table 4. The first device can adjust the arrangement rule of the dimming unit reflected by the above-mentioned coded signal Compare with the arrangement rule indicated by each reference signal. It should be noted that if the first optical fiber link is not faulty, the arrangement rule of the dimming unit reflected by the coded signal will be the same as the arrangement rule indicated by a reference signal in Table 4. If the arrangement rule of the dimming unit reflected by the encoded signal is different from the arrangement rule indicated by all reference signals, the first device can determine that the first optical fiber link is faulty.

Table 4

Fiber optic link	Reference signal
a1	1111111111
a2	1110111101

a3	1101111011
a4	1011110111
a5	1100111001
a6	1001110011
a7	1010110101
a8	1000110001

For example, as shown in Figure 10, suppose that the first optical fiber link is optical fiber link a1, and a part of the optical fiber link a1 between the two dimming units is faulty, and this part cannot transmit any signal; The signal is sent by the device 11 in FIG. 10, and the device 11 can send an encoded signal to the device 10 according to the signal reflected by the dimming unit on the optical fiber link a1. Because the faulty part of the optical fiber link a1 cannot transmit signals, the signals in the first band sent by the device 11 can only be transmitted to the 5 dimming units corresponding to port c1, but cannot be transmitted to the 5 dimming units corresponding to port b1. Light unit. The coded signal sent by the device 11 reflects the arrangement rule of the five dimming units corresponding to the port c1, and the coded signal sent by the device 11 cannot be transmitted to the device 10 either. Therefore, because the device 10 cannot receive any signal, it can be considered that the received coded signal is 0000000000, and the coded signal is used to indicate that no dimming unit is arranged on the optical fiber link a1. The coded signal is different from each reference signal in Table 4, so the first device can determine that the optical fiber link a1 is faulty.

For another example, as shown in Figure 10, suppose that the first optical fiber link is optical fiber link a1, and there is a partial failure between the two parts of the dimming unit on the optical fiber link a1, and this part cannot transmit any signal; in the first band The signal of is sent by the device 10 in FIG. 10, and the device 10 can receive the encoded signal reflected by the dimming unit on the optical fiber link a1. Since the faulty part of the optical fiber link a1 cannot transmit signals, the signals in the first band sent by the device 10 can only be transmitted to the 5 dimming units corresponding to port b1, but cannot be transmitted to the 5 dimming units corresponding to port c1. Light unit. The coded signal received by the device 10 is 1111100000, which reflects the arrangement rule of the 5 dimming units corresponding to the port b1. The coded signal is different from each reference signal in Table 4, so the first device can determine that the optical fiber link a1 is faulty.

Optionally, after determining that the first optical fiber link is faulty, the first device may also determine the faulty link segment in the first optical fiber link according to the encoded signal.

Taking Figure 10 as an example, suppose that the first optical fiber link is optical fiber link a1, and there is a partial failure between the two parts of the dimming unit on the optical fiber link a1, and this part cannot transmit any signal; the signal in the first band is determined by The device 10 in FIG. 10 sends out, and the device 10 can receive the encoded signal reflected by the dimming unit on the optical fiber link a1. As mentioned above, the coded signal received by the device 10 is 1111100000, which reflects the arrangement rule of the 5 dimming units corresponding to the port b1. Comparing the coded signal with the reference signal in Table 4, it can be seen that the coded signal has the highest similarity with the reference signal 11111111111 corresponding to the fiber link a1, and the device 10 can determine the fifth tone on the fiber link a1 that is close to the device 10 The link section between the optical unit and the sixth dimming unit is faulty.

Taking Figure 11 as an example, suppose that the first optical fiber link is optical fiber link a1, and among the five dimming units corresponding to port b1 on optical fiber link a1, the third dimming unit and the fourth dimming unit near port b1 Part of the optical unit is faulty, and this part cannot transmit any signal; the signal in the first band is sent by the device 10 in FIG. 11, and the device 10 can receive the encoded signal reflected by the dimming unit on the optical fiber link a1. Therefore, the signal in the first band sent by the device 10 can only be transmitted to the first three dimming units close to the port b1, but cannot be transmitted to the last two dimming units close to the port b1, and the five dimming units corresponding to the port c1. unit. The coded signal received by the device 10 is 1110000000. Comparing the coded signal with the reference signal in Table 4 shows that the coded signal has the highest similarity with the reference signal 11111111111 corresponding to the fiber link a1, and the device 10 can determine the fiber link The link segment between the third dimming unit and the fourth dimming unit in a1 is faulty.

On the other hand, taking the communication system shown in FIG. 9 as an example, the reference signal of each optical fiber link shown in FIG. 9 may be as shown in Table 5. The arrangement rule is compared with the arrangement rule indicated by each reference signal. It should be noted that if the first optical fiber link is not faulty, the arrangement rule of the dimming unit reflected by the coded signal will be the same as the arrangement rule indicated by a reference signal in Table 5. If the arrangement rule of the dimming unit reflected by the encoded signal is different from the arrangement rule indicated by all reference signals, the first device can determine that the first optical fiber link is faulty.

table 5

Fiber optic link	Reference signal
Branch a0, branch a11, branch a21	1111111111
Branch a0, branch a11, branch a28	1111111101
Branch a0, branch a12, branch a31	1110111101
Branch a0, branch a12, branch a38	1110111011
Branch a0, branch a13, branch a41	1101111011
Branch a0, branch a13, branch a48	1101111001
Branch a0, branch a14, branch a51	1100111001
Branch a0, branch a14, branch a58	1100110111
Branch a0, branch a15, branch a61	1011110111
Branch a0, branch a15, branch a68	1011110101
Branch a0, branch a16, branch a71	1110110101
Branch a0, branch a16, branch a78	1110110011
Branch a0, branch a17, branch a81	1001110011
Branch a0, branch a17, branch a88	1001110001
Branch a0, branch a18, branch a91	1000111111
Branch a0, branch a18, branch a98	1000110001

For example, as shown in Figure 12, suppose that the first optical fiber link includes branch a0, branch a11, and branch a21, and two parts of the dimming unit on the first optical fiber link (the dimming unit corresponding to the fiber port b1 and the fiber The part of the dimming unit corresponding to port c21 is faulty, and this part cannot transmit any signal; the signal in the first band is sent by the device 11 in FIG. 12, and the device 11 can dimming according to the first optical fiber link The signal reflected by the unit sends an encoded signal to the device 10. Since the faulty part of the first optical fiber link cannot transmit signals, the signals in the first band sent by device 11 can only be transmitted to the 5 dimming units corresponding to port c21, but cannot be transmitted to the 5 dimming units corresponding to port b1. Dimming unit. The coded signal sent by the device 11 reflects the arrangement of the 5 dimming units corresponding to port c21, and the coded signal sent by the device 11 cannot be transmitted to the device 10. Therefore, because the device 10 cannot receive any signal, it can be regarded as receiving The obtained coded signal is 0000000000, which is used to indicate that no dimming unit is arranged on the first optical fiber link. The coded signal is different from each reference signal in Table 5, so the first device can determine that the first optical fiber link is faulty.

Optionally, after determining that the first optical fiber link is faulty, the first device may also determine the faulty link segment in the first optical fiber link according to the encoded signal.

Taking Figure 12 as an example, suppose that the first optical fiber link includes branch a0, branch a11, and branch a21, and there are two parts of the dimming unit on the first optical fiber link (the dimming unit corresponding to the fiber port b1 and the fiber port c21. The part of the corresponding dimming unit) is faulty, and this part cannot transmit any signal; the signal in the first band is sent by the device 11 in FIG. 12, and the device 11 can reflect on the dimming unit according to the first optical fiber link. The signal sends an encoded signal to the device 10. As mentioned earlier, the coded signal received by the device 10 is 0000000000. If devices 11 to 18 have all sent coded signals to device 10, and these coded signals are all 0000000000, then device 10 can determine the common link segment (support Road a11) failure.

Taking Figure 13 as an example, suppose that the first optical fiber link includes branch a0, branch a11, and branch a21, and a certain part of branch a21 is faulty, and this part cannot transmit any signal; the signal in the first band is determined by The device 11 in FIG. 13 sends out, and the device 11 can send an encoded signal to the device 10 according to the signal reflected by the dimming unit on the first optical fiber link. The coded signal received by the device 10 is 0000000000. If the device 18 also sends an encoded signal to the device 10, and the encoded signal sent by the device 18 is 1111111101, the encoded signal is the same as the reference signal 1111111101 in Table 5. At this time, the device 10 can determine that the optical fiber link where the branch a0, the branch a11, and the branch a28 are located is not faulty, but the optical fiber link where the branch a0, the branch a11, and the branch a21 are located is faulty, and then the branch can be determined Road a21 is the faulty link segment.

It can be seen that when the optical fiber link is not faulty, each dimming unit on the optical fiber link can reflect the signal of the first band. When the optical fiber link fails, at least part of the dimming unit cannot reflect the first waveband signal. The coded signal from the optical fiber link can reflect the reflection of the signal in the first band by the dimming unit of the optical fiber link. Therefore, the first device can determine whether the optical fiber link is faulty based on the coded signal and locate the optical fiber link. The faulty link segment, so as to realize the fault detection of the optical fiber link.

The related technology provides a method for fault detection of optical fiber links by using "dark optical fibers". This method requires a dark optical fiber to be set near the optical fiber link, and the dark optical fiber is not connected to any equipment. When it is necessary to detect whether the optical fiber link is faulty, the staff can test the performance of the dark optical fiber to determine whether the dark optical fiber is faulty. When it is determined that the dark optical fiber is faulty, it is determined that the optical fiber link is faulty. However, setting a dark fiber will take up a certain amount of fiber resources, which cannot be applied in areas with relatively tight fiber resources, and requires staff to perform performance tests on the dark fiber. Therefore, the degree of automation is low, the error rate is high, and the efficiency is low. In the method provided in the embodiment of the present application, the device can automatically perform fault detection on the optical fiber link, with a high degree of automation, high accuracy, and high efficiency, and there is no need to set a dark optical fiber, which avoids the waste of optical fiber resources.

It should be noted that the optical fiber links in the embodiments of the present application are connected to devices. In the drawings, the optical fiber links are located outside the connected devices, and the dimming unit provided on the optical fiber links is also located outside the device as an example. Optionally, a part of the optical fiber link may extend into the connected device, which is not limited in the embodiment of the present application. At this time, the dimming unit provided on the optical fiber link may be located inside or outside the device connected to the optical fiber link, which is not limited in the embodiment of the present application.

The embodiment of the present application provides an optical fiber port identification device, which can be used for the first device in the communication system provided in the embodiment of the present application. As shown in FIG. 14, the optical fiber port identification device includes:

The processing module 605 is used to obtain the target signal of the fiber port on each fiber link in the multiple fiber links, and the target signal of the fiber port is used to indicate: the arrangement rule of the dimming unit corresponding to the fiber port on the fiber link ；

The receiving module 609 is used to receive the encoded signal from the first optical fiber link. The multiple optical fiber links include the first optical fiber link. The encoded signal is reflected by the dimming unit on the first optical fiber link after the signal in the first waveband is reflected get;

The processing module 605 is further configured to identify the optical fiber port on the first optical fiber link according to the encoded signal and the target signal of the optical fiber port on each optical fiber link.

Optionally, a plurality of optical fiber ports are provided on the optical fiber link, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than a distance threshold, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than the distance threshold. The distance of other optical fiber ports is greater than or equal to the distance threshold; the processing module 605 is used to: determine the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; wherein, the detection sub-signal is determined by the multiple corresponding to each optical fiber port. A dimming unit is obtained after reflecting the signal in the first waveband; according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link, and the target signal of the optical fiber port on each optical fiber link, the first optical fiber link On the fiber port to identify it.

Optionally, the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; a plurality of dimming units corresponding to each optical fiber port are arranged on at least a part of the plurality of target positions, And at least part of the target position includes: the first target position and the last target position among the multiple target positions; the processing module 605 is configured to: determine the corresponding target position in the coded signal according to the unit duration and the number of target positions corresponding to each fiber port The detection sub-signal of each optical fiber port on the first optical fiber link; wherein the unit time length is: the time required for the signal in the first band to be transmitted on the optical fiber link between adjacent target positions among the multiple target positions.

Optionally, in the target direction, the arrangement rules of the dimming units corresponding to the fiber ports in the same order on different fiber links are different, and the target direction includes: a direction close to or away from the first device; the optical fiber port identification device further includes: Determine the order corresponding to each optical fiber port on each optical fiber link. The corresponding order of the optical fiber ports is: in the target direction, the order of the optical fiber ports among the multiple optical fiber ports on the optical fiber link; the processing module 605 is used for : In the target direction, if the arrangement rule of the dimming unit reflected by the detection sub-signal corresponding to the optical fiber port of the target order on the first optical fiber link is the same as the arrangement of the dimming unit indicated by the target signal of the first optical fiber port If the distribution rules are consistent, the optical fiber port in the target order on the first optical fiber link is identified as the first optical fiber port, and the first optical fiber port is any optical fiber port corresponding to the target order.

Optionally, the first device is connected with multiple branches, and each branch includes multiple branches; each first-level branch is connected to the first device, and each branch is connected to multiple lower-level branches The next level of branches connected to different branches is different; the optical fiber link includes: one branch of each level of the multi-level branch; the optical fiber port set on the optical fiber link includes: each level of branch is close to The optical fiber port of the first device; the arrangement rules of the dimming units corresponding to the fiber ports on the different first-level branches are different, and the arrangement rules of the dimming units corresponding to the fiber ports on the multiple branches connected to the same branch are different; the optical fiber ports The identification device further includes: determining the port group corresponding to each optical fiber port, wherein the port group corresponding to the optical fiber port on each level 1 branch includes: the optical fiber port on each level 1 branch; each i-th level branch The port group corresponding to the optical fiber port on the road includes: the optical fiber port on each i-th branch, and the optical fiber port on the first i-1 branch connected to the optical fiber port on each i-th branch, i≥2; processing The module 605 is used for: the arrangement rule of the dimming unit reflected by the detection sub-signals of the first j optical fiber ports close to the first device on the first optical fiber link, and the target signal of the port group corresponding to the second optical fiber port When the arrangement rules of the indicated dimming units are consistent, the j-th optical fiber port on the first optical fiber link close to the first device is identified as the second optical fiber port, and the second optical fiber port is any one of the multiple optical fiber links Fiber optic port.

Optionally, the first device is connected to the second device through a first optical fiber link, and the receiving module 609 is configured to: receive an encoded signal sent by the second device through the first optical fiber link; where the encoded signal is: the second device is in The signal sent after sending the signal in the first waveband to the first optical fiber link, the dimming unit is also used to transmit the signal outside the first waveband, and the wavelength of the encoded signal is outside the first waveband.

Optionally, please continue to refer to FIG. 14, the optical fiber port identification device further includes: a first sending module 601 configured to send a signal in the first waveband to the first optical fiber link.

Optionally, the processing module 605 is further configured to: determine the reference signal of each optical fiber link, and the reference signal of the optical fiber link is used to indicate: the arrangement rule of all dimming units on the optical fiber link; When the arrangement rule of the dimming unit is different from the arrangement rule indicated by the reference signals of the multiple optical fiber links, it is determined that the first optical fiber link is faulty.

Optionally, the processing module 605 is further configured to determine the faulty link segment in the first optical fiber link according to the encoded signal.

Optionally, the bandwidth of the first waveband ranges from 2 nanometers to 10 nanometers, and/or the absolute value of the difference between the wavelength of the signal in the first waveband and the center wavelength of the first waveband is less than or equal to 5 nanometers.

Optionally, the structure of the optical fiber port identification device provided by the embodiment of the present application may be as shown in FIG. 6. At this time, the receiving module 609 includes: a filter 602 and a circulator 603 in FIG. 6; The module 605 is respectively connected to the first sending module 601 and the circulator 603, the circulator 603 is connected to the filter 602 and the first sending module 601, and the filter 602 is connected to the first optical fiber link; the processing module 605 is used to control the first sending module 601 to The circulator 603 transmits the signal of the first band; the circulator 603 is used to transmit the signal from the first transmitting module 601 to the filter 602, and the filter 602 is used to transmit the signal from the circulator 603 to the first optical fiber link; 602 is used to receive the encoded signal from the first optical fiber link and send the encoded signal from the first optical fiber link to the circulator 603; the circulator 603 is used to send the encoded signal from the filter 601 to the processing module 605.

The embodiment of the present application provides another optical fiber port identification device, which can be used for the second device in the communication system provided in the embodiment of the present application. As shown in FIG. 15, the optical fiber port identification device includes:

The first sending module 601 is configured to send signals in the first band to the first optical fiber link;

The receiving module 609 is configured to receive the signal in the first waveband reflected by the dimming unit on the first optical fiber link;

The second sending module 604 is configured to send an encoded signal to the first device through the first optical fiber link according to the signal received from the first optical fiber link, and the wavelength of the encoded signal is outside the first wavelength band.

Optionally, the structure of the optical fiber port identification device provided by the embodiment of the present application may be as shown in FIG. 6. At this time, the receiving module 609 includes: the filter 602 and the circulator 603 in FIG. 6; the optical fiber port identification device also includes The processing module 605 is connected to the first sending module 601, the second sending module 604, and the circulator 603, respectively, the circulator 603 connects the filter 602 and the first sending module 601, and the filter 602 connects the second sending module 604 and the first sending module 604. An optical fiber link; the processing module 605 is used to control the first sending module 601 to send signals of the first band to the circulator 603; the circulator 603 is used to send signals from the first sending module 601 to the filter 602; the filter 602 is used To send the signal from the circulator 603 to the first optical fiber link; the filter 602 is used to receive the signal in the first waveband reflected by the dimming unit on the first optical fiber link, and to send the signal from the first optical fiber to the circulator 603 The signal of the link; the circulator 603 is used to send the signal from the filter 602 to the processing module 605; the processing module 605 is used to control the second sending module 604 to send the encoded signal to the filter 602 according to the signal from the circulator 603; The converter 602 is configured to send the signal from the second sending module 604 to the first optical fiber link.

FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of this application. The network device may be any device in the communication system provided in the embodiment of the present application (such as the first device or the second device mentioned above). As shown in FIG. 16, the network device 200 includes a processor 202 and a memory 201, where the memory 201 is used to store programs, and the processor 202 is used to call the programs stored in the memory 201, so that the network device executes corresponding methods. Or function. Optionally, as shown in FIG. 16, the network device 200 may further include at least one communication interface 203 and at least one communication bus 204. The memory 201, the processor 202, and the communication interface 203 are communicatively connected through a communication bus 204. The communication interface 203 is used to communicate with other devices under the control of the processor 202, and the processor 202 can call a program stored in the memory 201 through the communication bus 204.

The embodiment of the present application provides a computer storage medium in which a computer program is stored. When the computer program is executed by a processor, any optical fiber port identification method provided in the embodiment of the present application is implemented.

The embodiments of the present application provide a computer program product containing instructions. When the computer program product runs on a network device, the network device executes any of the optical fiber port identification methods provided in the embodiments of the present application.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in the form of a computer program product in whole or in part, and the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data. The center transmits to another website, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium, or a semiconductor medium (for example, a solid state hard disk).

In this application, the terms "first" and "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term "at least one" refers to one or more, and "multiple" refers to two or more, unless expressly defined otherwise.

Different types of embodiments such as method embodiments and device embodiments provided in the embodiments of the present application can be referred to each other, which is not limited in the embodiments of the present application. The sequence of operations of the method embodiments provided in the embodiments of this application can be appropriately adjusted, and the operations can be increased or decreased accordingly according to the situation. Any person skilled in the art can easily think of changes within the technical scope disclosed in this application. The methods should all be covered in the scope of protection of this application, so I won’t repeat them here.

In the corresponding embodiments provided in the present application, it should be understood that the disclosed system, equipment, device, etc. may be implemented in other structural manners. For example, the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.

The units described as separate components may or may not be physically separate, and the components described as units may or may not be physical units, and may be located in one place or distributed to multiple network devices (such as terminal devices). )superior. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (32)

1. An optical fiber port identification method, characterized in that it is used for a first device, the first device is connected to multiple optical fiber links, the optical fiber links are provided with optical fiber ports, and the multiple optical fiber ports correspond to Dimming unit, and the arrangement of the dimming units on different optical fiber links is different; the dimming unit is used to reflect the signal in the first waveband, and the dimming unit on the optical fiber link treats the second The sum of the reflectivity of the signals in one band is less than or equal to 1;

   The method includes:

   Obtain the target signal of the optical fiber port on each optical fiber link in the multiple optical fiber links, where the target signal of the optical fiber port is used to indicate: the arrangement of the dimming unit corresponding to the optical fiber port on the optical fiber link Distribution law

   Receiving an encoded signal from a first optical fiber link, the plurality of optical fiber links including the first optical fiber link, and the encoded signal is reflected in the first wavelength band by a dimming unit on the first optical fiber link After the signal within;

   Identify the optical fiber port on the first optical fiber link according to the encoded signal and the target signal of the optical fiber port on each optical fiber link.
2. The method according to claim 1, wherein the arrangement rule of the dimming unit on the optical fiber link comprises: the number of the dimming unit on the optical fiber link, and the dimming unit At least one of the position of the unit on the optical fiber link and the distance between adjacent dimming units on the optical fiber link.
3. The method according to claim 1 or 2, wherein a plurality of optical fiber ports are provided on the optical fiber link, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than a distance threshold, And the distance from the other optical fiber ports except for each optical fiber port among the plurality of optical fiber ports is greater than or equal to a distance threshold;

   The identifying the optical fiber port on the first optical fiber link according to the encoded signal and the target signal of the optical fiber port on each optical fiber link includes:

   Determine the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; wherein, the detection sub-signal is reflected by the plurality of dimming units corresponding to each optical fiber port. Obtained after the signal in the first band;

   Identify the optical fiber port on the first optical fiber link according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link and the target signal of the optical fiber port on each optical fiber link.
4. The method according to claim 3, wherein the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; the plurality of target positions corresponding to each optical fiber port The dimming unit is arranged on at least part of the target positions among the plurality of target positions, and the at least part of the target positions includes: the first target position and the last target position among the plurality of target positions;

   The determining the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal includes:

   According to the unit duration and the number of target positions corresponding to each optical fiber port, the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal is determined; wherein, the unit duration is: The time required for the signal in the first waveband to be transmitted on the optical fiber link between adjacent target positions among the plurality of target positions.
5. The method according to claim 3 or 4, wherein, in the target direction, the arrangement rules of the dimming units corresponding to the same order of fiber ports on different fiber links are different, and the target direction includes: approaching or farther away The direction of the first device;

   The method further includes: determining the sequence corresponding to each optical fiber port on each optical fiber link, and the sequence corresponding to the optical fiber port is: in the target direction, the optical fiber port is located on the optical fiber link. The order among the multiple optical fiber ports;

   Said identifying the optical fiber port on the first optical fiber link according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link and the target signal of the optical fiber port on each optical fiber link ,include:

   In the target direction, if the arrangement rule of the dimming unit reflected by the detection sub-signals corresponding to the fiber ports of the target order on the first fiber link is the same as the dimming unit indicated by the target signal of the first fiber port If the arrangement rules of the units are consistent, the optical fiber port in the target order on the first optical fiber link is identified as the first optical fiber port, and the first optical fiber port is any optical fiber port corresponding to the target order.
6. The method according to claim 3 or 4, wherein the first device is connected with multi-level branches, and each level of the branch includes multiple branches; each first-level branch is connected to the first Device connection, each branch is connected to multiple lower-level branches, and the lower-level branches connected by different branches are different; the optical fiber link includes: One branch; the optical fiber ports set on the optical fiber link include: the optical fiber ports on each branch close to the first device; the arrangement rules of the dimming units corresponding to the optical fiber ports on different first branches are different, and the same The arrangement rules of the dimming units corresponding to the fiber ports on the multiple branches connected by the branches are different;

   The method further includes: determining the port group corresponding to each optical fiber port, wherein the port group corresponding to the optical fiber port on each first-level branch includes: the optical fiber port on each first-level branch; The port group corresponding to the optical fiber port on the i-level branch includes: the optical fiber port on each i-th branch, and the optical fiber on the front i-1 level branch to which the optical fiber port on each i-th branch is connected Port, i≥2;

   Said identifying the optical fiber port on the first optical fiber link according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link and the target signal of the optical fiber port on each optical fiber link ,include:

   The arrangement rule of the dimming unit reflected by the detection sub-signals of the first j optical fiber ports close to the first device on the first optical fiber link is indicated by the target signal of the port group corresponding to the second optical fiber port When the arrangement rules of the dimming units are the same, the j-th optical fiber port on the first optical fiber link close to the first device is identified as the second optical fiber port, and the second optical fiber port is the Any fiber port on multiple fiber links.
7. The method according to claim 6, wherein the multiple first-level branches are all connected to the first device through an initial branch;

   A part of the dimming unit corresponding to the optical fiber port is located on the branch where the optical fiber port is located, and another part of the dimming unit corresponding to the optical fiber port is located on the branch connected to the optical fiber port.
8. The method according to any one of claims 1 to 7, wherein the first device is connected to the second device through the first optical fiber link, and the receiving an encoded signal from the first optical fiber link includes :

   Receiving the encoded signal sent by the second device through the first optical fiber link;

   Wherein, the encoded signal is a signal sent by the second device after sending a signal in the first waveband to the first optical fiber link, and the dimming unit is also used to transmit the first waveband For external signals, the wavelength of the encoded signal is outside the first band.
9. The method according to any one of claims 1 to 5, characterized in that, before the receiving the encoded signal from the first optical fiber link, the method further comprises:

   Sending the signal in the first waveband to the first optical fiber link.
10. The method according to any one of claims 1 to 9, wherein the method further comprises:

    Determine the reference signal of each optical fiber link, where the reference signal of the optical fiber link is used to indicate: the arrangement rule of all dimming units on the optical fiber link;

    When the arrangement law of the dimming unit reflected by the encoded signal is different from the arrangement law indicated by the reference signals of the multiple optical fiber links, it is determined that the first optical fiber link is faulty.
11. The method according to claim 10, wherein after determining that the first optical fiber link fails, the method further comprises:

    According to the encoded signal, a faulty link segment in the first optical fiber link is determined.
12. The method according to any one of claims 1 to 11, wherein the dimming unit comprises: a grating.
13. The method according to any one of claims 1 to 12, wherein the bandwidth of the first wavelength band ranges from 2 nanometers to 10 nanometers, and/or the wavelength of the signal in the first wavelength band is the same as that of the first wavelength band. The absolute value of the difference between the center wavelengths of a band is less than or equal to 5 nanometers.
14. An optical fiber port identification method, characterized in that it is used for a second device, the second device is connected to a first device through a first optical fiber link, and the first device is connected to a plurality of optical fiber links. An optical fiber link is any optical fiber link of the plurality of optical fiber links, the optical fiber link is provided with an optical fiber port, and a plurality of dimming units corresponding to the optical fiber port, and different optical fiber links The arrangement rules of the dimming unit are different; the dimming unit is used to reflect the signal in the first waveband and transmit the signal outside the first waveband, and the dimming unit on the optical fiber link treats the The sum of the reflectivity of the signals in the first band is less than or equal to 1;

    The method includes:

    Sending the signal in the first band to the first optical fiber link;

    Receiving the signal in the first waveband reflected by the dimming unit on the first optical fiber link;

    According to the signal received from the first optical fiber link, an encoded signal is sent to the first device through the first optical fiber link, and the wavelength of the encoded signal is outside the first wavelength band.
15. The method according to claim 14, wherein the arrangement rule of the dimming unit on the optical fiber link comprises: the number of the dimming unit on the optical fiber link, the dimming unit At least one of the position of the unit on the optical fiber link and the distance between adjacent dimming units on the optical fiber link.
16. An optical fiber port identification device, which is characterized in that it is used for a first device, the first device is connected to a plurality of optical fiber links, the optical fiber links are provided with optical fiber ports, and the plurality of optical fiber ports correspond to Dimming unit, and the arrangement of the dimming unit on different optical fiber links is different; the dimming unit is used to reflect the signal in the first waveband, and the dimming unit on the optical fiber link treats the second The sum of the reflectivity of the signals in one band is less than or equal to 1;

    The optical fiber port identification device includes:

    The processing module is used to obtain the target signal of the optical fiber port on each optical fiber link in the multiple optical fiber links, and the target signal of the optical fiber port is used to indicate: the dimming unit corresponding to the optical fiber port is in the optical fiber Arrangement law on the link;

    The receiving module is configured to receive an encoded signal from a first optical fiber link, the multiple optical fiber links including the first optical fiber link, and the encoded signal is reflected by a dimming unit on the first optical fiber link Obtained after the signal in the first waveband;

    The processing module is further configured to identify the optical fiber port on the first optical fiber link according to the encoded signal and the target signal of the optical fiber port on each optical fiber link.
17. The optical fiber port identification device according to claim 16, wherein a plurality of optical fiber ports are provided on the optical fiber link, and the distance between the dimming unit corresponding to each optical fiber port and each optical fiber port is less than a distance threshold. , And the distance from the other optical fiber ports except for each optical fiber port among the plurality of optical fiber ports is greater than or equal to a distance threshold; the processing module is used for:

    Determine the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal; wherein, the detection sub-signal is reflected by the plurality of dimming units corresponding to each optical fiber port. Obtained after the signal in the first band;

    Identify the optical fiber port on the first optical fiber link according to the detection sub-signal corresponding to each optical fiber port on the first optical fiber link and the target signal of the optical fiber port on each optical fiber link.
18. The optical fiber port identification device according to claim 17, wherein the optical fiber link has a plurality of target positions arranged at equal intervals corresponding to each optical fiber port; The plurality of dimming units are arranged on at least part of the target positions among the plurality of target positions, and the at least part of the target positions includes: the first target position and the last target position among the plurality of target positions;

    The processing module is used for:

    According to the unit duration and the number of target positions corresponding to each optical fiber port, the detection sub-signal corresponding to each optical fiber port on the first optical fiber link in the encoded signal is determined; wherein, the unit duration is: The time required for the signal in the first waveband to be transmitted on the optical fiber link between adjacent target positions among the plurality of target positions.
19. The optical fiber port identification device according to claim 17 or 18, wherein in the target direction, the arrangement rules of the dimming units corresponding to the same order of the optical fiber ports on different optical fiber links are different, and the target direction includes: The direction approaching or away from the first device;

    The optical fiber port identification device further includes: determining an order corresponding to each optical fiber port on each optical fiber link, and the corresponding order of the optical fiber port is: in the target direction, the optical fiber port is located on the optical fiber where the optical fiber port is located. Sequence among multiple fiber ports on the link;

    The processing module is configured to: in the target direction, if the arrangement rule of the dimming unit reflected by the detection sub-signal corresponding to the optical fiber port of the target order on the first optical fiber link is the same as that of the first optical fiber port If the arrangement rules of the dimming units indicated by the target signal are consistent, the optical fiber port of the target order on the first optical fiber link is identified as the first optical fiber port, and the first optical fiber port corresponds to the target order Any of the fiber ports.
20. The optical fiber port identification device according to claim 17 or 18, wherein the first device is connected with multi-level branches, and each level of the branch includes multiple branches; In the first device connection, each branch is connected to multiple lower-level branches, and the lower-level branches connected by different branches are different; the optical fiber link includes: each branch in the multi-level branch A branch in the road; the optical fiber ports set on the optical fiber link include: the optical fiber ports on each branch near the first device; the arrangement of the dimming units corresponding to the optical fiber ports on the different first-level branches Different, the arrangement rules of the dimming units corresponding to the fiber ports on multiple branches connected to the same branch are different;

    The optical fiber port identification device further includes: determining a port group corresponding to each optical fiber port, wherein the port group corresponding to the optical fiber port on each first-level branch includes: the optical fiber port on each first-level branch; The port group corresponding to the optical fiber port on each i-th branch includes: the optical fiber port on each i-th branch, and the first i-1 level branch connected to the optical fiber port on each i-th branch Optical fiber port on the road, i≥2;

    The processing module is used for: the arrangement rule of the dimming unit reflected by the detection sub-signals of the first j optical fiber ports close to the first device on the first optical fiber link corresponds to the second optical fiber port When the arrangement rules of the dimming units indicated by the target signals of the port group are consistent, the j-th optical fiber port on the first optical fiber link close to the first device is identified as the second optical fiber port, and The second optical fiber port is any optical fiber port on the multiple optical fiber links.
21. The optical fiber port identification device according to any one of claims 16 to 20, wherein the first device is connected to the second device through the first optical fiber link, and the receiving module is used for:

    Receiving the encoded signal sent by the second device through the first optical fiber link;

    Wherein, the encoded signal is a signal sent by the second device after sending a signal in the first waveband to the first optical fiber link, and the dimming unit is also used to transmit the first waveband For external signals, the wavelength of the encoded signal is outside the first band.
22. The optical fiber port identification device according to any one of claims 16 to 19, wherein the optical fiber port identification device further comprises:

    The first sending module is configured to send the signal in the first waveband to the first optical fiber link.
23. The optical fiber port identification device according to any one of claims 16 to 22, wherein the processing module is further configured to:

    Determine the reference signal of each optical fiber link, where the reference signal of the optical fiber link is used to indicate: the arrangement rule of all dimming units on the optical fiber link;

    When the arrangement law of the dimming unit reflected by the encoded signal is different from the arrangement law indicated by the reference signals of the multiple optical fiber links, it is determined that the first optical fiber link is faulty.
24. The optical fiber port identification device according to claim 23, wherein the processing module is further configured to:

    According to the encoded signal, a faulty link segment in the first optical fiber link is determined.
25. The optical fiber port identification device according to any one of claims 16 to 24, wherein the bandwidth of the first wavelength band ranges from 2 nanometers to 10 nanometers, and/or the wavelength of the signal in the first wavelength band is equal to The absolute value of the difference between the center wavelengths of the first waveband is less than or equal to 5 nanometers.
26. The optical fiber port identification device according to claim 22, wherein the receiving module comprises: a filter and a circulator; the processing module is respectively connected to the first sending module and the circulator, and the circulator Connecting the filter and the first sending module, and the filter is connected to the first optical fiber link;

    The processing module is used to control the first sending module to send the first waveband signal to the circulator; the circulator is used to send the signal from the first sending module to the filter, the The filter is used to send the signal from the circulator to the first optical fiber link;

    The filter is used to receive the encoded signal from the first optical fiber link, and to send the encoded signal from the first optical fiber link to the circulator; the circulator is used to transmit the The module sends the encoded signal from the filter.
27. An optical fiber port identification device, characterized in that it is used for a second device, the second device is connected to a first device through a first optical fiber link, and the first device is connected to a plurality of optical fiber links. An optical fiber link is any optical fiber link of the plurality of optical fiber links, the optical fiber link is provided with an optical fiber port, and a plurality of dimming units corresponding to the optical fiber port, and different optical fiber links The arrangement rules of the dimming unit are different; the dimming unit is used to reflect signals in the first waveband and transmit signals outside the first waveband, and the optical fiber link up the dimming unit to the The sum of the reflectivity of the signals in the first band is less than or equal to 1;

    The optical fiber port identification device includes:

    A first sending module, configured to send a signal in the first band to the first optical fiber link;

    A receiving module, configured to receive the signal in the first waveband reflected by the dimming unit on the first optical fiber link;

    The second sending module is configured to send an encoded signal to the first device through the first optical fiber link according to the signal received from the first optical fiber link, and the wavelength of the encoded signal is located in the first device. One band outside.
28. The optical fiber port identification device according to claim 27, wherein the receiving module includes: a filter and a circulator; the optical fiber port identification device further includes a processing module, and the processing modules are respectively connected to the first transmission module. Module, the second transmission module and the circulator, the circulator connects the filter and the first transmission module, and the filter connects the second transmission module and the first optical fiber link ；

    The processing module is used to control the first sending module to send the first waveband signal to the circulator; the circulator is used to send the signal from the first sending module to the filter; The filter is used to send the signal from the circulator to the first optical fiber link;

    The filter is configured to receive the signal in the first waveband reflected by the dimming unit on the first optical fiber link, and send the signal from the first optical fiber link to the circulator; the ring The device is used to send the signal from the filter to the processing module;

    The processing module is used to control the second sending module to send the encoded signal to the filter according to the signal from the circulator; the filter is used to send the coded signal to the first optical fiber link The signal of the second sending module.
29. A communication system, characterized in that, the communication system includes: a first device, and a plurality of optical fiber links connected to the first device, the optical fiber link is provided with an optical fiber port, and the optical fiber port corresponds to The arrangement of the dimming units on different optical fiber links is different; the dimming unit is used to reflect the signal in the first waveband, and the dimming unit pairs on the optical fiber link The sum of the reflectances of the signals in the first waveband is less than or equal to 1;

    The first device comprises: the optical fiber port identification device according to any one of claims 16 to 26.
30. The communication system according to claim 29, wherein the communication system further comprises: a second device, and the first device is connected to the second device through a first optical fiber link;

    The second device comprises: the optical fiber port identification device of claim 27 or 28.
31. A computer storage medium, characterized in that a computer program is stored in the storage medium, and when the computer program is executed by a processor, the method for identifying an optical fiber port according to any one of claims 1 to 15 is realized.
32. A network device, wherein the network device comprises: at least one processor, at least one interface, memory, and at least one communication bus, and the processor is configured to execute a program stored in the memory to implement claim 1. The optical fiber port identification method described in any one of to 15.

Images