CN115133998B - Optical module and wavelength self-adaption method based on message channel - Google Patents
Optical module and wavelength self-adaption method based on message channel Download PDFInfo
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- CN115133998B CN115133998B CN202110313572.5A CN202110313572A CN115133998B CN 115133998 B CN115133998 B CN 115133998B CN 202110313572 A CN202110313572 A CN 202110313572A CN 115133998 B CN115133998 B CN 115133998B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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Abstract
The application provides an optical module and a wavelength self-adaption method based on a message channel, wherein the optical module comprises an optical emission component, an optical receiving component and an MCU, and the optical emission component is used for emitting a first optical signal carrying a low-frequency message channel signal; the light receiving component is used for receiving a second light signal; the MCU is used for sending a wavelength changing instruction and wavelength information, the wavelength information is loaded to the first optical signal in a low-frequency message mode, the optical emission component emits the first optical signal corresponding to the wavelength information according to the instruction, and whether the wavelength is changed again is judged according to a low-frequency message channel signal loaded on the second optical signal. According to the method and the device, the low-frequency signal is loaded on the basis of the normal service signal, the function of a message channel is increased, the self-adaption of the wavelengths of the optical modules at two ends is completed on the basis that the normal service communication function is not affected, the wavelength is self-adaption is carried out by changing the wavelength, the automatic wavelength self-adaption function is realized, and the communication efficiency of the optical modules is improved.
Description
Technical Field
The present disclosure relates to the field of optical fiber communications technologies, and in particular, to an optical module and a wavelength adaptive method based on a message channel.
Background
With the development of new business and application modes such as cloud computing, mobile internet, video and the like, the development and progress of optical communication technology become more and more important. In the optical communication technology, the optical module is a tool for realizing the mutual conversion of optical signals, is one of key devices in optical communication equipment, and the transmission rate of the optical module is continuously improved along with the development of the optical communication technology.
At present, optical modules are not separated from two end devices of a network, and the optical modules generally consist of a transmitting part and a receiving part, so that photoelectric conversion and electro-optical conversion can be performed. The existing optical module comprises a single-fiber bidirectional optical module and a double-fiber bidirectional optical module, such as a color light Tunable-BIDI optical module which refers to a single-fiber bidirectional wavelength Tunable optical module, wherein the BIDI optical module adopts a BOSA scheme, the emitted and received wavelengths are different, and the BIDI modules are used in pairs. Currently, in order to realize channel communication of a pair of modules, an operator manually configures an emission wavelength of a module, emits the configured wavelength through the emission channel, and correspondingly finds a receiving channel identical to the wavelength of the emission channel, thereby realizing information link communication of an optical module.
However, when the method is adopted to realize the connection of the modules, the efficiency of manually configuring the wavelength is low, the channel number/wavelength information in the optical network to which the optical fibers of the modules are connected needs to be predetermined, and then the modules are manually configured to the corresponding channels/wavelengths, so that the communication efficiency of the color optical Tunable-BIDI optical module is low.
Disclosure of Invention
The embodiment of the application provides an optical module and a wavelength self-adaption method based on a message channel, so as to realize the wavelength self-adaption function of the color light Tuable-BIDI optical module automation and improve the communication efficiency of the optical module.
In a first aspect, the present application provides an optical module comprising:
an optical transmitting assembly configured to transmit a first optical signal carrying a low frequency message channel signal;
an optical receiving assembly configured to receive a second optical signal from the outside;
the MCU is electrically connected with the light emitting component and the light receiving component and is configured to send out a wavelength changing instruction and wavelength information, the wavelength information is loaded to the first optical signal in a low-frequency message mode, and the light emitting component emits a first optical signal corresponding to the wavelength information according to the instruction; and judging whether to change the wavelength of the first optical signal again according to the low-frequency message channel signal loaded on the second optical signal.
In a second aspect, the present application provides an optical module comprising:
a light receiving assembly configured to receive a first light signal from the outside;
an optical emission assembly configured to emit a second optical signal;
the MCU is electrically connected with the light receiving component and the light transmitting component and is configured to demodulate a low-frequency message channel signal of the first optical signal and generate response information according to the low-frequency message channel signal; and loading the response information to the low-frequency message channel signal, and controlling the light emitting component to emit a second light signal carrying the low-frequency message channel signal.
In a third aspect, the present application provides a wavelength adaptation method based on a message channel, including:
transmitting a first optical signal, wherein the first optical signal is an optical signal with a low-frequency message channel signal loaded on a high-frequency signal, the high-frequency signal is a normal service signal, and the low-frequency message channel signal is used for indicating wavelength information of the first optical signal;
receiving a second optical signal from the outside;
and judging whether to change the wavelength of the first optical signal according to the low-frequency message channel signal loaded on the second optical signal.
In a fourth aspect, the present application provides a message channel-based wavelength adaptation method, the method comprising:
receiving a first optical signal from the outside;
demodulating a low-frequency message channel signal loaded on the first optical signal to obtain wavelength information of the first optical signal;
generating response information according to the wavelength information of the first optical signal;
and loading the response information to the low-frequency message channel signal, and transmitting a second optical signal carrying the low-frequency message channel signal.
The optical modules are color light Tunage-BIDI optical modules used in pairs, each optical module comprises an optical emission component, an optical receiving component and an MCU, a first MCU of a first optical module sends a wavelength changing instruction and wavelength information to the first optical emission component, the wavelength information is loaded to a first optical signal emitted by the optical emission component in a low-frequency message mode, and the optical emission component emits the first optical signal carrying a low-frequency message channel signal to a second optical module according to the instruction; the second light receiving component of the second light module receives the first light signal, the second MCU demodulates a low-frequency message channel signal carried by the first light signal to obtain wavelength information of the first light signal, generates response information according to the wavelength information of the first light signal, loads the response information to the low-frequency message channel signal, and controls the second light emitting component to emit the second light signal carrying the low-frequency message channel signal to the first light module; the first light receiving component of the first light module receives the second light signal, the first MCU demodulates the low-frequency message channel signal carried by the second light signal to obtain response information, and whether the wavelength of the first light signal is changed again is judged according to the response information. According to the method and the device, the low-frequency signal is loaded on the basis of the normal service signal, the function of a message channel is increased, the self-adaption of the wavelengths of the optical modules at two ends is completed on the basis of not affecting the normal service communication function, the wavelength is self-adaption by changing the wavelength, the automatic wavelength self-adaption function can be realized, and accordingly the communication efficiency of the optical modules is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection relationship of an optical communication terminal;
fig. 2 is a schematic diagram of an optical network unit structure;
fig. 3 is a schematic structural diagram of an optical module provided in an embodiment of the present application;
fig. 4 is an exploded schematic structural diagram of an optical module provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an optical module provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of a message channel modulation depth test configuration;
fig. 7 is a flowchart of a wavelength adaptive method based on a message channel according to an embodiment of the present application;
fig. 8 is a flowchart of another wavelength adaptive method based on a message channel according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
One of the key links of optical fiber communication is the conversion of optical-electrical signals. Optical fiber communication uses optical signals carrying information to be transmitted in optical fibers/optical waveguides, and low-cost and low-loss information transmission can be realized by utilizing the passive transmission characteristic of light in the optical fibers. The information processing devices such as computers adopt electrical signals, which require the mutual conversion between electrical signals and optical signals in the signal transmission process.
The optical module realizes the photoelectric conversion function in the technical field of optical fiber communication, and the mutual conversion of optical signals and electric signals is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on a circuit board, the main electrical connection comprises power supply, I2C signals, data signal transmission, grounding and the like, and the electrical connection mode realized by the golden finger becomes a standard mode of the optical module industry, and on the basis, the circuit board is a necessary technical feature in most optical modules.
Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes an optical network unit 100, an optical module 200, an optical fiber 101 and a network cable 103;
one end of the optical fiber is connected with a remote server, one end of the network cable is connected with local information processing equipment, and the connection between the local information processing equipment and the remote server is completed by the connection between the optical fiber and the network cable; and the connection between the optical fiber and the network cable is made by an optical network unit having an optical module.
The optical port of the optical module 200 is connected with the optical fiber 101, and a bidirectional optical signal connection is established with the optical fiber; the electrical port of the optical module 200 is connected into the optical network unit 100, and a bidirectional electrical signal connection is established with the optical network unit; the optical module realizes the mutual conversion of optical signals and electric signals, thereby realizing the establishment of connection between the optical fiber and the optical network unit; specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network unit 100, and the electrical signal from the optical network unit 100 is converted into an optical signal by the optical module and input to the optical fiber. The optical module 200 is a tool for realizing photoelectric signal conversion, and has no function of processing data, and information is not changed during the photoelectric conversion.
The optical network unit is provided with an optical module interface 102, which is used for accessing an optical module and establishing bidirectional electric signal connection with the optical module; the optical network unit is provided with a network cable interface 104 for accessing a network cable and establishing bidirectional electric signal connection with the network cable; the optical network unit transmits signals from the optical module to the network cable, and the optical network unit serves as an upper computer of the optical module to monitor the operation of the optical module.
So far, the remote server establishes a bidirectional signal transmission channel with the local information processing equipment through the optical fiber, the optical module, the optical network unit and the network cable.
Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network unit is an upper computer of the optical module, which provides data signals for the optical module and receives data signals from the optical module, and the common upper computer of the optical module also comprises an optical line terminal and the like.
Fig. 2 is a schematic diagram of an optical network unit structure. As shown in fig. 2, there is a circuit board 105 in the optical network unit 100, and a cage 106 is provided on the surface of the circuit board 105; an electrical connector is arranged in the cage 106 and is used for accessing an optical module electrical port such as a golden finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a convex structure such as fins that increase a heat dissipation area.
The optical module 200 is inserted into an optical network unit, in particular an electrical connector in the cage 106, the optical port of the optical module being connected to the optical fiber 101.
The cage 106 is positioned on the circuit board, and the electrical connectors on the circuit board are wrapped in the cage; the optical module is inserted into the cage, the optical module is fixed by the cage, and heat generated by the optical module is conducted to the cage through the optical module housing and finally diffused through the radiator 107 on the cage.
Fig. 3 is a schematic structural diagram of an optical module 200 according to an embodiment of the present application, and fig. 4 is an exploded structural diagram of the optical module 200 according to the embodiment. As shown in fig. 3 and 4, the optical module 200 provided in the embodiment of the present application includes an upper case 201, a lower case 202, an unlocking handle 203, a circuit board 30, a light emitting assembly 40, and a light receiving assembly 50.
The upper case 201 is covered on the lower case 202 to form a packing cavity having two openings; the outer contour of the wrapping cavity is generally square, and specifically, the lower shell comprises a main board and two side boards which are positioned on two sides of the main board and are perpendicular to the main board; the upper shell comprises a cover plate, and the cover plate covers the two side plates of the upper shell to form a wrapping cavity; the upper shell can further comprise two side walls which are positioned on two sides of the cover plate and are perpendicular to the cover plate, and the two side walls are combined with the two side plates so as to realize that the upper shell covers the lower shell.
The two openings can be specifically two openings (204, 205) positioned at the same end of the optical module, or two openings positioned at different ends of the optical module; one opening is an electric port 204, and a golden finger of the circuit board extends out of the electric port 204 and is inserted into an upper computer such as an optical network unit; the other opening is an optical port 205 for external fiber access to connect the light emitting assembly 40 and the light receiving assembly 50 inside the optical module; optoelectronic devices such as the circuit board 30, the light emitting assembly 40, and the light receiving assembly 50 are located in the encapsulation cavity.
The upper shell and the lower shell are combined to be assembled, so that devices such as the circuit board 30, the light emitting component 40, the light receiving component 50 and the like can be conveniently installed in the shells, and the upper shell and the lower shell form an encapsulation protection shell of the outermost layer of the optical module; the upper shell and the lower shell are generally made of metal materials, so that electromagnetic shielding and heat dissipation are facilitated; the housing of the optical module is not generally made into an integral structure, so that the positioning component, the heat dissipation and the electromagnetic shielding structure cannot be installed when devices such as a circuit board are assembled, and the production automation is not facilitated.
The unlocking handle 203 is located on the outer wall of the packaging cavity/lower housing 202, and is used for realizing the fixed connection between the optical module and the upper computer, or releasing the fixed connection between the optical module and the upper computer.
The unlocking handle 203 is provided with a clamping structure matched with the upper computer cage; pulling the end of the unlocking handle can relatively move the unlocking handle on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping structure of the unlocking handle; by pulling the unlocking handle, the clamping structure of the unlocking handle moves along with the unlocking handle, so that the connection relation between the clamping structure and the upper computer is changed, the clamping relation between the optical module and the upper computer is relieved, and the optical module can be pulled out of the cage of the upper computer.
The circuit board 30 is provided with circuit wiring, electronic components (such as capacitor, resistor, triode, MOS tube) and chips (such as microprocessor MCU, laser driving chip, limiting amplifier, clock data recovery CDR, power management chip, data processing chip DSP).
The circuit board 30 connects the electrical devices in the optical module together according to the circuit design through the circuit wiring, so as to realize the electrical functions of power supply, electrical signal transmission, grounding and the like.
The circuit board 30 is generally a hard circuit board, and the hard circuit board can also realize a bearing function due to the relatively hard material, for example, the hard circuit board can stably bear chips; when the light emitting assembly 40 and the light receiving assembly 50 are located on the circuit board, the hard circuit board can also provide a smooth load bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, specifically, a metal pin/golden finger is formed on the surface of one side tail end of the hard circuit board and is used for being connected with the electric connector; these are all inconvenient to implement with flexible circuit boards.
A flexible circuit board is also used in part of the optical modules and is used as a supplement of the hard circuit board; the flexible circuit board is generally used in cooperation with the hard circuit board, for example, the hard circuit board and the optical transceiver can be connected by using the flexible circuit board.
The light emitting assembly 40 and the light receiving assembly 50 are respectively used for realizing the emission of the light signal and the reception of the light signal. The light emitting component 40 in this embodiment is packaged by a housing, and the circuit board 30 extends into the housing of the light emitting component 40, and is electrically connected with components in the housing by wire bonding made of metal, for example, by gold wires. Of course, in other embodiments, the light emitting assembly 40 may also be packaged in a non-airtight manner.
Furthermore, in the working process of the optical module, the embodiment sets that the optical module can send out a relatively high-frequency data optical signal according to the data electrical signal from the optical line terminal so as to keep the original external data transmission service of the optical line terminal, and meanwhile, the optical module also sends out a relatively low-frequency control optical signal according to the non-data electrical signal (i.e. a signal not used for normally transmitting the service) so as to send control information to the optical module at the opposite end, so that the control data is transmitted to the remote system without interrupting the normal service, and the optical module at the opposite end can adjust the speed mode.
Because the optical modules of the optical module and the opposite end are externally connected by adopting one optical fiber, the data optical signal and the control optical signal are mixed in the same beam of light to be transmitted by adopting the same optical fiber, and in order to distinguish different signals, the embodiment sets the data optical signal and the control optical signal to have different frequencies. In an implementation manner, the light emitting assembly may be controlled by setting a microprocessor, a light emitting assembly and a light receiving assembly in the light module, where a low-frequency modulation signal (manipulation light signal) is superimposed on a high-frequency signal (data light signal) sent by the light emitting assembly, and this embodiment is called a low-frequency message channel.
Fig. 5 is a schematic structural diagram of an optical module according to an embodiment of the present application. As shown in fig. 5, the optical modules provided in the embodiments of the present application are BIDI optical modules used in pairs, where the BIDI optical modules include a first optical module (head optical module) 300 and a second optical module (tail optical module) 200, the first optical module 300 is applied to a system end, the second optical module 200 is applied to a user end, and the system end and the user end are connected in a communication manner through the first optical module 300 and the second optical module 200.
Specifically, the first optical module 300 includes an optical transmitting assembly for transmitting a first optical signal carrying a low frequency message channel signal, an optical receiving assembly for receiving a second optical signal from the outside, and an MCU; the MCU is electrically connected with the light emitting component and the light receiving component and is used for sending a wavelength changing instruction and wavelength information, the wavelength information is loaded to the first optical signal in a low-frequency message mode, and the light emitting component emits the first optical signal corresponding to the wavelength information according to the instruction; and judging whether to change the wavelength of the first optical signal again according to the low-frequency message channel signal loaded on the second optical signal.
In this embodiment of the present application, the first optical module 300 is a color light tunable optical module, has a wavelength tunable function, and is switched to different working bands by software control through the number of channels configurable by software. The color light Tunable-BIDI (Tunable-BIDirectional) optical module refers to a single-fiber bidirectional optical module, the BIDI optical module adopts a BOSA scheme, the emitting wavelength and the receiving wavelength are different, and the BIDI modules are used in pairs, for example, the emitting wavelength of the first optical module 300 is lambda 1, and the receiving wavelength is lambda 2; the first optical module 300 emits a wavelength λ2 and receives a wavelength λ1.
The color light Tuable-BIDI optical modules are usually paired modules, and the emission is Tunable, for example, the first optical module emits light with adjustable wavelength of lambda 1-1 to N-1, and the second optical module emits light with adjustable wavelength of lambda 1-2 to N-2. Receiving is typically broadband receiving, such as transmitting a module of tunable wavelengths λ1-1 to N-1, receiving all light of receivable wavelengths λ1-2 to N-2; the other end transmits a module with adjustable wavelength of lambda 1-2 to N-2 and receives all light with receivable wavelength of lambda 1-1 to N-1.
The wavelength of the first optical signal emitted by the first light emitting component 320 of the first optical module 300 may be controllably changed by the first MCU 310. If the first light emitting component 320 is mounted on the semiconductor refrigerator, the first MCU310 may adjust the wavelength of the light signal emitted by the first light emitting component 320 by controlling the temperature of the semiconductor refrigerator; alternatively, the first light emitting element 320 and other optical devices form a wavelength resonant cavity, and the first MCU310 adjusts the wavelength of the light signal emitted by the first light emitting element 320 by controlling the wavelength resonant cavity.
In this embodiment of the present application, when the first light emitting component 320 controls to emit a first light signal with a certain wavelength through the first MCU310, a low-frequency signal is loaded on the basis of a normal service signal, and a function of a message channel is added, through which a wavelength signal of the first light signal is transmitted. When the first optical module 300 sends the first optical signal to the second optical module 200, the second optical module 200 can obtain the wavelength information of the first optical signal, so as to determine whether the wavelength information of the first optical module 300 is matched with the wavelength information of the second optical module 200, thereby realizing the wavelength self-adapting function.
In order to enable the message channel to load the wavelength information of the first optical signal, the present application carries a low-frequency message channel signal in the first optical signal transmitted by the first optical transmitting component 320, where the low-frequency message channel signal is used to load the wavelength information of the first optical signal. Specifically, the first light emitting component 320 includes a laser chip that is driven by a BIAS current to generate an optical signal, and in order to be able to carry a low frequency message channel signal, a low frequency signal is added to BIAS current BIAS dc, and a low frequency modulation signal is added to dc negative voltage BIAS to perform data modulation on the low frequency signal, thereby forming a low frequency message channel signal.
The optical module provided in the embodiment of the present application is actually applied to a signal of 10Gbps or 25Gbps, that is, the optical signal emitted by the first optical emitting component 320 is a high frequency data signal of 10Gbps or 25 Gbps. On the basis of 10Gbps or 25Gbps signals, a low-frequency signal is added, the 10Gbps or 25Gbps signals are normal service signals, and the other path of low-frequency signals are added to execute other functions while the service is not occupied. In the embodiment of the application, the low-frequency signal can be selected from low-frequency signals of 50 Kbps.
Specifically, when the frequency of the low-frequency signal is selected, the low-frequency signal can be calculated according to the message channel modulation depth, wherein the message channel modulation depth is positioned as the difference between the optical power of the '1' level and the optical power of the '0' level, divided by 2 times of the average optical power, and the low-frequency signal is calculated by the following formula (1):
wherein, P (1) -the average optical power of the message channel '1' level is mW;
p (0) -the average optical power of the message channel "0" level, in mW.
Fig. 6 is a schematic diagram of a message channel modulation depth test configuration. As shown in fig. 6, the corresponding optical powers of P (1) and P (0) can be obtained by performing the test accordingly. That is, the optical signal emitted by the first optical emission component 320 is photoelectrically converted by the detector, the optical signal is converted into an electrical signal, the electrical signal is filtered by the low-pass filter, and the filtered electrical signal obtains a message channel eye diagram through the oscilloscope, wherein the message channel eye diagram is a high-frequency data signal; and on the other hand, the filtered electric signal is extracted by a message channel clock extraction module to obtain a clock signal, and the average optical power of the '1' level of the message channel and the average optical power of the '0' level of the message channel are obtained according to the clock signal and the waveform diagram.
After the first optical module 300 sends the first optical signal carrying the low frequency message channel signal to the second optical module 200, it needs to stay for a period of time, such as 3 seconds, for waiting for feedback to the second optical module 200. When the first optical module 300 receives the second optical signal within the preset time, the first optical receiving assembly 330 converts the second optical signal into an electrical signal, and the first MCU310 demodulates the low frequency message channel signal loaded on the second optical signal and determines whether to change the wavelength of the first optical signal according to the low frequency message channel signal.
When the first MCU310 determines that the wavelength of the first optical signal needs to be changed according to the demodulated low frequency message channel signal, the first MCU310 changes the wavelength of the first optical signal by adjusting the temperature of the semiconductor refrigerator or adjusting the wavelength resonant cavity, and then modifies the wavelength information of the first optical signal, loads the modified wavelength information into the low frequency message channel signal, controls the first optical transmitting component 320 to transmit the first optical signal carrying the new low frequency message channel signal to the second optical module 200, and waits for feedback of the second optical module 200 again.
In this embodiment, the first MCU310 controls to change the wavelength of the first optical signal emitted by the first optical emission component 320 until the first MCU310 determines that the wavelength does not need to be changed according to the low-frequency message channel signal loaded on the second optical signal, and stops changing the wavelength of the first optical signal, and selects the wavelength at this time to perform link communication between the first optical module 300 and the second optical module 200.
In this embodiment, the low-frequency message channel signal loaded on the second optical signal may indicate the backhaul wavelength information of the second optical module 200, or may indicate that the second optical module 200 has no optical feedback information. When the low-frequency message channel information loaded on the second optical signal indicates the return wavelength information of the second optical module 200, the first MCU310 determines whether to change the wavelength of the first optical signal according to the return wavelength information and the wavelength information of the first optical signal, if the return wavelength information matches with the wavelength information of the first optical signal, the change of the wavelength of the first optical signal is terminated, and the wavelength at this time is selected for link communication; if the returned wavelength information is not matched with the wavelength information of the first optical signal, the wavelength of the first optical signal is changed to the next wavelength, the first optical signal of the new low-frequency message channel signal is sent to the second optical module 200, and the feedback of the second optical module 200 is waited.
When the low-frequency message channel signal loaded on the second optical signal indicates that no optical feedback information exists, the first MCU310 judges whether to change the wavelength of the first optical signal according to the optical feedback information, if the low-frequency message channel signal indicates that the optical feedback information exists, the change of the wavelength of the first optical signal is stopped, and the wavelength at the moment is selected for link opposite communication; the low frequency message channel signal indicates no feedback information, and changes the wavelength of the first optical signal to the next wavelength, and sends the first optical signal of the new low frequency message channel signal to the second optical module 200, and waits for feedback of the second optical module 200.
In this embodiment of the present application, the second optical module 200 includes an optical receiving component, an optical transmitting component and an MCU, where the optical receiving component is configured to receive a first optical signal carrying a message channel signal, and the optical transmitting component is configured to transmit a second optical signal carrying a low-frequency message channel; the MCU is electrically connected with the light emitting component and the light receiving component and is used for generating response information according to the low-frequency message channel signal loaded on the first light signal and loading the response information to the low-frequency message channel signal to control the light emitting component to emit a second light signal carrying the low-frequency message channel signal.
The second light receiving assembly 230 of the second light module 200 receives the first light signal emitted from the first light module 300, and the first light signal is loaded with the light signal of the low frequency message channel signal on the high frequency signal, wherein the high frequency signal is the normal service signal, and the low frequency message channel signal is used for indicating the wavelength information of the first light signal. The second optical receiving component 230 converts the first optical signal into an electrical signal, and at the same time, the second MCU210 demodulates the low frequency message channel signal in the first optical signal to obtain wavelength information of the first optical signal, and generates response information according to the wavelength information of the first optical signal, where the response information may be return wavelength information, and loads the return wavelength information into the low frequency message channel signal to control the second optical transmitting component 220 to transmit the second optical signal carrying the low frequency message channel signal.
After the first optical module 300 receives the second optical signal, the first MCU310 demodulates the low-frequency message channel signal in the second optical signal to obtain the feedback wavelength information of the second optical signal, and then compares the wavelength information of the first optical signal with the feedback wavelength information of the second optical module 200 to determine whether the wavelength information is matched, if so, it is indicated that the wavelength information of the first optical signal is matched with the wavelength information of the second optical module 200, and link communication can be performed according to the wavelength; if the information does not match, it is indicated that the wavelength information of the first optical signal does not match the wavelength information of the second optical module 200, and the wavelength of the first optical signal needs to be changed.
In this embodiment, in order to facilitate the transmission of the first optical signal sent by the first optical module 300 to the second optical module 200 and the transmission of the second optical signal sent by the second optical module 200 to the first optical module 300, a first arrayed waveguide grating 400 and a second arrayed waveguide grating 500 are disposed between the first optical module 300 and the second optical module 200, the first arrayed waveguide grating 400 is connected to the first optical module 300, the second arrayed waveguide grating 500 is connected to the second optical module 200, and the first arrayed waveguide grating 400 and the second arrayed waveguide grating 500 are connected by an optical fiber 101.
The first arrayed waveguide grating 400 has the same wavelength characteristics as the second arrayed waveguide grating 500, and has N channels, each of which allows light of two wavelengths to pass therethrough, so as to facilitate the application of the BIDI optical module. The characteristics of the arrayed waveguide grating are as follows: channel 1 can only pass light of wavelengths λ1-1 and λ1-2 and channel N can only pass light of wavelengths λN-1 and λN-2.
Arrayed Waveguide Grating (AWG) and Thin-Film Filters (TFF) are the two most commonly used WDM (Wavelength Division Multiplexing ) techniques that combine multiple channels of light of different wavelengths into a single optical fiber, thereby improving the propagation efficiency of the optical fiber network. In this embodiment of the present application, the first arrayed waveguide grating 400 applied to the system end may combine a plurality of light beams with different wavelengths into a single optical fiber for transmission to the user end, and the second arrayed waveguide grating 500 applied to the user end may demultiplex a plurality of light beams with different wavelengths transmitted by a single optical fiber, where the light beams with different wavelengths are received through different channels.
In use, if the first optical module 300 is connected to the channel 1-1 of the first arrayed waveguide grating 400, the optical module emits light with wavelength of λ1-1 and receives light with wavelength of λ1-2; for example, the second optical module 200 receives the channel 2-1 of the second arrayed waveguide grating 500, and the optical module emits light with wavelength λ1-2 and receives light with wavelength λ1-1. At this time, communication between the first optical module 300 and the second optical module 200 can be realized, and no signal transmission and no mutual influence are generated between the modules working at other wavelengths and the two optical modules.
The optical modules provided by the embodiment of the application are color light Tuable-BIDI optical modules used in pairs, each optical module comprises an optical emission component, an optical receiving component and an MCU, a first MCU of a first optical module sends a wavelength changing instruction and wavelength information to the first optical emission component, the wavelength information is loaded to a first optical signal emitted by the optical emission component in a low-frequency message mode, and the optical emission component emits the first optical signal carrying a low-frequency message channel signal to a second optical module according to the instruction; the second light receiving component of the second light module receives the first light signal, the second MCU demodulates a low-frequency message channel signal carried by the first light signal to obtain wavelength information of the first light signal, generates response information according to the wavelength information of the first light signal, loads the response information to the low-frequency message channel signal, and controls the second light emitting component to emit the second light signal carrying the low-frequency message channel signal to the first light module; the first light receiving component of the first light module receives the second light signal, the first MCU demodulates the low-frequency message channel signal carried by the second light signal to obtain response information, and whether the wavelength of the first light signal is changed is judged according to the response information. According to the method and the device, the low-frequency signal is loaded on the basis of the normal service signal, the function of a message channel is increased, the self-adaption of the wavelengths of the optical modules at two ends is completed on the basis that the normal service communication function is not affected, the wavelength is self-adaption is carried out by changing the wavelength, the automatic wavelength self-adaption function is realized, and therefore the communication efficiency of the optical modules is improved.
Based on the optical modules described in the foregoing embodiments, the embodiments of the present application further provide a wavelength adaptive method based on a message channel, where the method is applied to the optical modules described in the foregoing embodiments, so as to implement automatic wavelength adaptive on-off of two optical modules.
Fig. 7 is a flowchart of a wavelength adaptive method based on a message channel according to an embodiment of the present application. As shown in fig. 7, the wavelength adaptive method based on a message channel provided in the embodiment of the present application includes:
s100: and transmitting a first optical signal, wherein the first optical signal is an optical signal with a low-frequency message channel signal loaded on a high-frequency signal, the high-frequency signal is a normal service signal, and the low-frequency message channel signal is used for indicating wavelength information of the first optical signal.
S110: a second optical signal is received from the outside.
S120: and judging whether to change the wavelength of the first optical signal according to the low-frequency message channel signal loaded on the second optical signal.
In this embodiment of the present application, after a first optical module applied to a system end is powered on, a first MCU of the first optical module sends a wavelength changing instruction and wavelength information, and the wavelength information is loaded to a first optical signal in a low frequency message manner, so as to control a first optical transmitting component to transmit a first optical signal corresponding to the wavelength information. After the first optical module sends the first optical signal, waiting for feedback of the second optical module in a preset time, namely, the first optical receiving assembly of the first optical module receives the second optical signal sent by the second optical module, the first MCU demodulates a low-frequency message channel signal carried by the second optical signal to obtain response information, and judges whether to change the wavelength of the first optical signal according to the response information.
When the first MCU judges that the wavelength of the first optical signal needs to be changed according to the demodulated low-frequency message channel signal, the first MCU changes the wavelength of the first optical signal by adjusting the temperature of the semiconductor refrigerator or adjusting a wavelength resonant cavity and the like, then modifies the wavelength information of the first optical signal, loads the modified wavelength information to the low-frequency message channel signal, controls the first light emitting component to emit the first optical signal carrying the new low-frequency message channel signal to the second optical module, and waits for feedback of the second optical module again.
The first MCU controls and changes the wavelength of the first optical signal emitted by the first optical emission component until the first MCU judges that the change is stopped according to the low-frequency message channel signal loaded on the second optical signal, the wavelength of the first optical signal is stopped to be changed, and the wavelength at the moment is selected to perform link opposite connection between the first optical module and the second optical module.
In this embodiment, the low-frequency message channel signal loaded on the second optical signal may indicate the backhaul wavelength information of the second optical module 200, or may indicate that the second optical module 200 has no optical feedback information. When the low-frequency message channel information loaded on the second optical signal indicates the return wavelength information of the second optical module 200, the first MCU310 determines whether to change the wavelength of the first optical signal according to the return wavelength information and the wavelength information of the first optical signal, if the return wavelength information matches with the wavelength information of the first optical signal, the change of the wavelength of the first optical signal is terminated, and the wavelength at this time is selected for link communication; if the returned wavelength information is not matched with the wavelength information of the first optical signal, the wavelength of the first optical signal is changed to the next wavelength, the first optical signal of the new low-frequency message channel signal is sent to the second optical module 200, and the feedback of the second optical module 200 is waited.
When the low-frequency message channel signal loaded on the second optical signal indicates that no optical feedback information exists, the first MCU310 judges whether to change the wavelength of the first optical signal according to the optical feedback information, if the low-frequency message channel signal indicates that the optical feedback information exists, the change of the wavelength of the first optical signal is stopped, and the wavelength at the moment is selected for link opposite communication; the low frequency message channel signal indicates no feedback information, and changes the wavelength of the first optical signal to the next wavelength, and sends the first optical signal of the new low frequency message channel signal to the second optical module 200, and waits for feedback of the second optical module 200.
Fig. 8 is a flowchart of another wavelength adaptive method based on a message channel according to an embodiment of the present application. As shown in fig. 8, the wavelength adaptive method based on a message channel provided in the embodiment of the present application includes:
s200: a first optical signal is received from the outside.
S210: jie Diaochu the low-frequency message channel signal loaded on the first optical signal, and wavelength information of the first optical signal is obtained.
S220: and generating response information according to the wavelength information of the first optical signal.
S230: and loading the response information to the low-frequency message channel signal and transmitting a second optical signal carrying the low-frequency message channel signal.
The second light receiving component of the second light module receives a first light signal sent by the first light module, the first light signal is loaded with a light signal of a low-frequency message channel signal on a high-frequency signal, the high-frequency signal is a normal service signal, and the low-frequency message channel signal is used for indicating wavelength information of the first light signal. The second optical receiving component converts the first optical signal into an electrical signal, and the second MCU demodulates the low-frequency message channel signal in the first optical signal to obtain wavelength information of the first optical signal, generates response information according to the wavelength information of the first optical signal, where the response information may be return wavelength information, loads the return wavelength information into the low-frequency message channel signal, and controls the second optical transmitting component 220 to transmit the second optical signal carrying the low-frequency message channel signal.
After the first optical module 300 receives the second optical signal, the first MCU310 demodulates the low-frequency message channel signal in the second optical signal to obtain the returned wavelength information of the second optical signal, and then compares the wavelength information of the first optical signal with the wavelength information of the second optical module to determine whether the wavelength information is matched, if so, it indicates that the wavelength information of the first optical signal is matched with the wavelength information of the second optical module, and link communication can be performed according to the wavelength; if the first optical signal does not match, the wavelength information of the first optical signal and the wavelength information of the second optical module are not adapted, and the wavelength of the first optical signal needs to be changed.
In the application of the wavelength self-adaptive method based on the message channel in the color light module, the first light module sends a first light signal to the second light module, the first light signal is a light signal loaded with a low-frequency message channel signal on a high-frequency signal, the high-frequency signal is a normal service signal, and the low-frequency message channel signal is used for indicating wavelength information of the first light signal; the second optical module receives a first optical signal sent by the first optical module, demodulates a low-frequency message channel signal loaded on the first optical signal to obtain wavelength information of the first optical signal, generates response information according to the wavelength information of the first optical signal, loads the response information into the low-frequency message channel signal, and controls the second optical module to transmit a second optical signal carrying the low-frequency message channel signal to the first optical module; the first optical module receives a second optical signal sent by the second optical module, demodulates a low-frequency message channel signal carried by the second optical signal, obtains response information, and judges whether to change the wavelength of the first optical signal according to the response information. According to the method and the device, the low-frequency signal is loaded on the basis of the normal service signal, the function of a message channel is increased, the self-adaption of the wavelengths of the optical modules at two ends is completed on the basis that the normal service communication function is not affected, the wavelength is self-adaption is carried out by changing the wavelength, the automatic wavelength self-adaption function is realized, and therefore the communication efficiency of the optical modules is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An optical module, comprising:
an optical transmitting assembly configured to transmit a first optical signal carrying a low frequency message channel signal;
an optical receiving assembly configured to receive a second optical signal from the outside;
the MCU is electrically connected with the light emitting component and the light receiving component and is configured to send out a wavelength changing instruction and wavelength information, the wavelength information is loaded to the first optical signal in a low-frequency message mode, and the light emitting component emits a first optical signal corresponding to the wavelength information according to the instruction; and judging whether to change the wavelength of the first optical signal again according to the low-frequency message channel signal loaded on the second optical signal.
2. The optical module of claim 1, wherein the optical transmitting assembly is further configured to receive a bias current loaded with a low frequency signal, and generate optical signals of different wavelengths according to the bias current, the optical signals carrying both data light and a low frequency message channel signal.
3. The optical module of claim 1, wherein the MCU is further configured to determine whether to change the wavelength of the first optical signal again based on the backhaul wavelength information indicated by the low frequency message channel signal on the second optical signal and the wavelength information of the first optical signal.
4. The optical module of claim 1, wherein the MCU is further configured to determine whether to again change the wavelength of the first optical signal based on no optical feedback indicated by a low frequency message channel signal on the second optical signal.
5. An optical module, comprising:
a light receiving assembly configured to receive a first light signal from the outside;
an optical emission assembly configured to emit a second optical signal;
the MCU is electrically connected with the light receiving component and the light transmitting component and is configured to demodulate a low-frequency message channel signal of the first optical signal and generate response information according to the low-frequency message channel signal; and loading the response information to the low-frequency message channel signal, and controlling the light emitting component to emit a second light signal carrying the low-frequency message channel signal.
6. The optical module of claim 5, wherein the MCU is further configured to generate response information indicative of the backhaul wavelength information.
7. A message channel-based wavelength adaptation method, the method comprising:
transmitting a first optical signal, wherein the first optical signal is an optical signal with a low-frequency message channel signal loaded on a high-frequency signal, the high-frequency signal is a normal service signal, and the low-frequency message channel signal is used for indicating wavelength information of the first optical signal;
receiving a second optical signal from the outside;
and judging whether to change the wavelength of the first optical signal according to the low-frequency message channel signal loaded on the second optical signal.
8. The message channel-based wavelength adaptation method according to claim 7, wherein determining whether to change the wavelength of the first optical signal based on the low frequency message channel signal loaded on the second optical signal comprises:
demodulating the low-frequency message channel signal loaded by the second optical signal;
judging whether the low-frequency message channel signal indicates back wavelength information;
and if the low-frequency message channel signal indicates the return wavelength information, judging whether to change the wavelength of the first optical signal according to whether the return wavelength information is consistent with the wavelength information of the first optical signal.
9. The message channel-based wavelength adaptation method according to claim 7, wherein determining whether to change the wavelength of the first optical signal based on the low frequency message channel signal loaded on the second optical signal comprises:
demodulating the low-frequency message channel signal loaded by the second optical signal;
judging whether the low-frequency message channel signal indicates optical feedback or not;
if the low frequency message channel signal is not indicative of optical feedback, changing the wavelength of the first optical signal.
10. A message channel-based wavelength adaptation method, the method comprising:
receiving a first optical signal from the outside;
demodulating a low-frequency message channel signal loaded on the first optical signal to obtain wavelength information of the first optical signal;
generating response information according to the wavelength information of the first optical signal;
and loading the response information to the low-frequency message channel signal, and transmitting a second optical signal carrying the low-frequency message channel signal.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960763A (en) * | 2013-12-02 | 2016-09-21 | Oe解决方案美国有限公司 | Optical transceiver and optical communication system |
| CN107079204A (en) * | 2014-11-05 | 2017-08-18 | 华为技术有限公司 | A kind of method, optical module, local side apparatus and the terminal device of optical port auto-negotiation |
| CN109412013A (en) * | 2018-11-09 | 2019-03-01 | 武汉联特科技有限公司 | A kind of tunable wave length optical module, remote wavelength switching method and locking means |
| CN110519666A (en) * | 2019-08-16 | 2019-11-29 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module wavelength configuration method, apparatus and optical module |
| CN111262631A (en) * | 2020-01-17 | 2020-06-09 | 烽火通信科技股份有限公司 | Management information processing method, optical module, ONU and application system thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101727779B1 (en) * | 2013-01-02 | 2017-04-17 | 한국전자통신연구원 | PON Reach Extender and method thereof based on Tunable Optical Transceiver |
| KR20140100163A (en) * | 2013-02-05 | 2014-08-14 | 한국전자통신연구원 | A method and apparatus for wavelength selection of onu/ont in passive optical network |
| US9350448B2 (en) * | 2013-12-03 | 2016-05-24 | Cisco Technology, Inc. | Multi-beam free space optical endpoint |
| KR20150096159A (en) * | 2014-02-14 | 2015-08-24 | 한국전자통신연구원 | Method and apparatus for selecting wavelength on wavelength tunable optical receiver |
-
2021
- 2021-03-24 CN CN202110313572.5A patent/CN115133998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960763A (en) * | 2013-12-02 | 2016-09-21 | Oe解决方案美国有限公司 | Optical transceiver and optical communication system |
| CN107079204A (en) * | 2014-11-05 | 2017-08-18 | 华为技术有限公司 | A kind of method, optical module, local side apparatus and the terminal device of optical port auto-negotiation |
| CN109412013A (en) * | 2018-11-09 | 2019-03-01 | 武汉联特科技有限公司 | A kind of tunable wave length optical module, remote wavelength switching method and locking means |
| CN110519666A (en) * | 2019-08-16 | 2019-11-29 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module wavelength configuration method, apparatus and optical module |
| CN111262631A (en) * | 2020-01-17 | 2020-06-09 | 烽火通信科技股份有限公司 | Management information processing method, optical module, ONU and application system thereof |
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