CN116887078A - Optical line terminal, passive optical network, power adjustment method, and storage medium - Google Patents

Abstract

The application provides an optical line terminal, a passive optical network, a power adjustment method and a storage medium, which are used for enabling a plurality of PON ports to meet respective actual optical power requirements. The optical line terminal may include a first light source pool connected to the first optical power distribution module, the first light source pool being configured to provide a first light source to the optical power distribution module; the first optical power distribution module is connected with a plurality of first optical channels and is used for distributing the power of the first light source and outputting the distributed power to the connected first optical channels; wherein, any first optical channel comprises a first optical power detection unit, and the first optical power detection unit is used for detecting the downlink optical power of any first optical channel; the total power of the light source provided by the first light source pool to the first light power distribution module is adjusted based on the downlink light power of each first light channel in the plurality of first light channels and the target power value of each first light channel.

Description

Optical line terminal, passive optical network, power adjustment method, and storage medium

Technical Field

The embodiment of the application relates to the technical field of optical communication, in particular to an optical line terminal, a passive optical network, a power adjustment method and a storage medium.

Background

With the development of passive optical networks (Passive Optical Network, PON), the structure in which a plurality of PON ports can use the same light source is still under investigation. Different PON ports, such as a 10G PON, may use the same light source. But the link optical power budget index of each PON port is also different due to factors such as the optical distance, the number of optical network units (Optical Network Unit, ONUs), the optical ratio, the fiber quality, etc. In practical applications, how to make multiple PON ports meet the actual optical power requirements is a problem that needs to be solved.

Disclosure of Invention

The embodiment of the application provides an optical line terminal, a passive optical network, a power adjustment method and a storage medium, which are used for enabling a plurality of PON ports to meet respective actual optical power requirements.

In a first aspect, an embodiment of the present application provides an optical line terminal, which may include a first light source pool connected to a first optical power distribution module, where the first light source pool is configured to provide a first light source to the optical power distribution module;

the first optical power distribution module is connected with a plurality of first optical channels and is used for distributing the power of the first light source and outputting the distributed power to the connected first optical channels;

Wherein, any first optical channel comprises a first optical power detection unit, and the first optical power detection unit is used for detecting the downlink optical power of any first optical channel; the total power of the light source provided by the first light source pool to the first light power distribution module is adjusted based on the downlink light power of each first light channel in the plurality of first light channels and the target power value of each first light channel.

In the embodiment of the present application, the plurality of first optical channels in the optical line terminal share the same light source, that is, the first light source pool. By comparing the power value of the actual downlink light of each first optical channel (i.e. the downlink optical power), and the target power value (which can be understood as the expected power or the power requirement) corresponding to each first optical channel, the reference data for adjusting the total power of the output light of the first light source pool can be used. For example, the total power of the output light of the first light source pool is adjusted, so that the downlink optical power of each first light channel can be increased, and the problem that the actual power requirement is not met under the condition that different PON ports can use the same light source is solved.

In some examples, the wavelength band of the light output by the first light source pool is any one of the following wavelength bands:

1260nm-1360nm、1480nm-1500nm、1260nm-1280nm、1575nm-1679nm、1260nm-1280nm、1284nm-1288nm、1290nm-1310nm、1340nm-1344nm。

In a possible implementation manner, the optical line terminal provided by the embodiment of the present application may further include:

the first adjusting module is connected with the first light source pool;

the first adjusting module is used for adjusting the total power of the light sources provided by the first light source pool to the first light power distribution module.

In a possible implementation manner, the optical line terminal provided by the embodiment of the present application further includes: the control module is connected with each first optical power detection unit in the plurality of first optical channels and connected with the first adjusting module;

the control module is used for:

judging whether the downlink optical power of each first optical channel reaches the target power value of the first optical channel according to the downlink optical power of each first optical channel in the plurality of first optical channels and the target power value of each first optical channel in the plurality of first optical channels;

and if one or more target first optical channels exist, controlling the first adjusting module to adjust the total power of the light sources provided by the first light source pool to the first optical power distribution module, wherein the target first optical channels are first optical channels with the downlink optical power not reaching the corresponding target power values.

In a possible implementation manner, the optical line terminal provided by the embodiment of the present application further includes:

the second light source pool is connected with the second power distribution module and is used for providing a second light source for the optical power distribution module;

the second optical power distribution module is connected with a plurality of second optical channels and is used for distributing the power of the second light source and outputting the distributed power to the connected second optical channels;

wherein, any second optical channel comprises a second optical power detection unit, and the second optical power detection unit is used for detecting the downlink optical power of any second optical channel; the total power of the light source provided by the second light source pool to the second light power distribution module is adjusted based on the downlink light power of each second light channel in the plurality of second light channels and the target power value of each second light channel.

In the embodiment of the present application, the plurality of second optical channels in the optical line terminal share the same light source, that is, the second light source pool. By comparing the actual power value of the downlink light (i.e. the downlink light power) of each second light channel with the corresponding target power value (which can be understood as the expected power or the power requirement) of each second light channel, the reference data for adjusting the total power of the output light of the second light source pool can be used. For example, the total power of the output light of the second light source pool is adjusted, so that the downlink optical power of each second light channel can be increased, and the problem that the actual power requirement is not met under the condition that different PON ports can use the same light source is solved.

In a possible implementation manner, the wavelength band of the light output by the second light source pool is any one of the following wavelength bands:

1260nm-1360nm、1480nm-1500nm、1260nm-1280nm、1575nm-1679nm、1260nm-1280nm、1284nm-1288nm、1290nm-1310nm、1340nm-1344nm。

in some examples, the wavelength band of the second light source is different from the wavelength band of the first light source; the optical line terminal is connected to a plurality of load links, wherein one load link may be connected to one first optical channel, or one load link may be connected to one second optical channel, or one load link may be connected to one first optical channel and one second optical channel. In other words, the second optical channel and the first optical channel may be connected to the same load link.

In the embodiment of the application, the wave bands of the light provided by the second light source pool and the first light source pool are the same, so that the optical line terminal can provide optical signals for more load links.

In some examples, the wavelength band of the second light source is the same as the wavelength band of the second light source; the optical line terminal is connected to a plurality of load links, wherein one load link can be connected to only one first optical channel. Or one load link may only connect one second optical channel. Alternatively, the second optical channel and the first optical channel may not be connected to the same load link.

In the embodiment of the application, the wave bands of the light provided by the second light source pool and the first light source pool are different, so that the first light channel and the second light channel respectively support different optical signal transmission rates, and the optical line terminal can support various optical signal transmission rates.

In a possible implementation manner, the optical line terminal provided by the embodiment of the present application further includes:

the second adjusting module is connected with the second light source pool; the second adjusting module is used for adjusting the total power of the light sources provided by the second light source to the second optical power distribution module.

In a possible implementation manner, in the optical line terminal provided by the embodiment of the present application, the control module is further configured to:

judging whether the downlink optical power of each second optical channel reaches the target power value of the second optical channel according to the downlink optical power of each second optical channel in the plurality of second optical channels and the target power value of each second optical channel in the plurality of second optical channels;

and if one or more target second optical channels exist, controlling the second adjusting module to adjust the total power of the light sources provided by the second light source pool to the second optical power distribution module, wherein the target second optical channels are second optical channels with the downlink optical power not reaching the corresponding target power values.

In a second aspect, the present application also provides a passive optical network, which may comprise a plurality of load links and any one of the optical line terminals as provided in the first aspect.

In a third aspect, the present application also provides a power adjustment method, which may be applied to any one of the optical line terminals as provided in the first aspect. The optical line terminal includes a plurality of optical channels. The power adjustment method may include:

detecting the downlink optical power of each optical channel in the plurality of optical channels;

and if one or more target optical channels exist, adjusting the total power of the light source pool output light for providing a light source for the target optical channels, wherein the target optical channels are the optical channels in which the downlink optical power in the optical channels does not reach the corresponding target power value.

In a possible implementation manner, the power adjustment method provided by the embodiment of the present application further includes:

and receiving the target power value of each optical channel in the plurality of optical channels provided by the operation and maintenance management system.

In a fourth aspect, the present application provides a computer-readable storage medium having stored therein a computer program or instructions which, when executed by a terminal device, cause the terminal device to perform any of the methods provided in the third aspect above.

In a fifth aspect, the present application provides a computer program product comprising a computer program or instructions which, when executed by a terminal device, implement any of the methods provided in the third aspect above.

Drawings

Fig. 1 is an application scenario diagram of an optical line terminal according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an optical line terminal according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an optical line terminal according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an optical line terminal according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an optical line terminal according to an embodiment of the present application;

fig. 6 is a flowchart of a power adjustment method of an optical line terminal according to an embodiment of the present application;

fig. 7 is a flowchart of a power adjustment method of an optical line terminal according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. It will be apparent that the described embodiments are merely some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the embodiments of the present application, "a plurality" refers to two or more, and in this regard, "a plurality" may be understood as "at least two" in the embodiments of the present application. "at least one" may be understood as one or more, for example as one, two or more. For example, including at least one means including one, two or more, and not limiting what is included, e.g., including at least one of A, B and C, then A, B, C, A and B, A and C, B and C, or A and B and C, may be included. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

Unless stated to the contrary, the embodiments of the present application refer to ordinal terms such as "first," "second," etc., for distinguishing between multiple objects and not for defining a sequence, timing, priority, or importance of the multiple objects.

An optical module is an optoelectronic device capable of performing photoelectric conversion and electro-optical conversion. Typically, the transmitting end of the optical module may convert the electrical signal into an optical signal, which may be generally implemented by an optical transmitting assembly. The light emitting assembly may also be regarded as an emitting unit formed by packaging a semiconductor laser of a specific wavelength. In the case of an optical communication system where information transmission is required, by adjusting an optical transmitting component, such as a driving chip, a modulated laser, etc., an electrical signal can be loaded onto an optical carrier wave of a specific wavelength of the laser and coupled into an optical fiber for transmission.

Currently, PON-based optical access network systems include 1G-PON and 10G-PON systems, and use pluggable optical modules at the office. These pluggable optical modules can provide up and down communication capability at 10G rate at maximum, and capability of integrating 16 optical modules (equivalent to 16 PON ports) at maximum for a single service card. The "PON port" or "PON port" in the present application may refer to an optical interface of PON local side equipment, such as an optical line terminal (Optical Line Terminal, OLT), facing an optical distribution network (Optical Distribution Network, ODN) and an ONU terminal. For an OLT terminal employing an independent optical module, the PON port may be specifically configured as the independent optical module of the OLT terminal. For OLT terminals adopting other optical signal output module modes such as a light source pool, the PON port mode may specifically be an optical signal output/input port corresponding to an ODN network and an ONU terminal suspended below the ODN network.

With the increase of the transmission rate of the circuit, since each optical module needs a laser chip, the cost of the laser chip supporting the high rate is high, the packaging is complex, and the heat dissipation problem needs to be considered. In order to enable the optical access network to support a higher transmission rate (such as a 50G rate) and have lower cost, a plurality of optical modules can share a light source, that is, a plurality of PON ports use the same light source, but in this way, a situation that a single PON port is difficult to satisfy ONU service easily occurs. In view of this, embodiments of the present application provide an optical line terminal, a passive optical network, a power adjustment method, and a storage medium.

Fig. 1 schematically illustrates an application scenario of an optical line terminal provided by an embodiment of the present application. As shown in fig. 1, a passive optical network may include an optical line terminal and a plurality of load links. One optical line terminal may be connected to a plurality of load links. Wherein, an optical line terminal may include a plurality of PON ports, and one PON port may be connected to one load link. Alternatively, a load link may comprise an ONU. Alternatively, one load link may comprise a plurality of ONUs, for example one load link may comprise a splitter module, which may connect a plurality of ONUs. Each PON port may provide optical signals to a load link.

The embodiment of the application provides a passive optical network, which can comprise any one of optical line terminals and a plurality of load links provided by the embodiment of the application. The optical line terminal provided by the embodiment of the application can provide the optical signal for the load link.

Fig. 2 schematically illustrates a structural diagram of an optical line terminal according to an embodiment of the present application. Embodiments of the present application provide an optical line terminal 10. The optical line terminal 10 in the passive optical network provided in the embodiment of the present application may include: a first pool of light sources 20, a first optical power distribution module 21, and a plurality of first optical channels 22.

The first pool of light sources 20 may be connected to a first optical power distribution module 21. The first pool of light sources 20 may have the capability or function of outputting light and may act as light sources. The first light source pool 20 may provide the first light source to the first light power distribution module 21. The first optical power distribution module 21 may be connected to a plurality of first optical channels 22, and the first optical power distribution module 21 may have a light splitting capability, and may output the power of the first light source after being distributed to the connected first optical channels 22. In some examples, the first optical power distribution module 21 may include a splitter or the like. The first optical power distribution module 21 may divide one light source into multiple light sources and output the light sources. Alternatively, the first optical power distribution module 21 may divide the light provided by the first light source pool equally and output the divided light to each first optical channel 22. For example, assuming that the number of the first optical channels 22 is 3, the first optical power distribution module 21 may uniformly divide the light output from the first light source pool 20 into 3 paths and output the 3 paths to the 3 first optical channels 22, respectively. Each first optical channel 22 receives one third of the optical power output by the first pool of light sources 20. It can be seen that the total power of the light output by the first pool of light sources 20 is also increased by the power of the light received by each first light channel 22.

In the embodiment of the present application, the structure of each first optical channel 22 is the same or similar. Each first optical channel 22 may be connected to a load link for providing an optical signal to the load link. Each of the first optical channels 22 may include a first optical power detection unit 301. The first optical power detection unit 301 is configured to detect a downlink optical power of the first optical channel 22. The first optical power detecting unit 301 may include a semiconductor photodetector or the like. Such a design may enable the determination of the downstream optical power of each first optical channel 22. In the embodiment of the present application, the downlink optical channel of the first optical channel 22 may be the detected power of the optical signal output by the first optical channel 22 to the connected load link, which may be used as the output power of the first optical channel 22.

The total power of the light sources provided by the first light source pool to the first optical power distribution 21 may be adjusted according to the downlink optical power of each first optical channel and the target power value (which may be understood as an expected or desired power value) of each first optical channel, so that the actual downlink optical power of each first optical channel approaches or reaches the corresponding target power value, that is, the power requirement of the load link connected by each first optical channel.

In one possible design, referring again to fig. 2, each first optical channel 22 may further include a first modulation transmitting unit 302. The first modulation transmitting unit 302 may have optical modulation capability and transmitting capability. The first modulation transmitting unit 302 may modulate the optical signal received by the first optical channel 22, record the service signal, and output the service signal to the load link. The first modulation transmitting unit 302 may include components such as an optical modulator, so as to implement optical modulation capability and transmitting capability, and the specific structure of the first modulation transmitting unit 302 is not limited in the present application.

In a possible application scenario, the wavelength band of the light output by the first light source pool 20 may be 1260nm-1360nm or 1480nm-1500nm, so that each first light channel 22 may support a 1G transmission rate. The wavelength band of the light output by the first light source pool can be 1260nm-1280nm or 1575-1679nm, and each first light channel 22 can support 10G transmission rate. In another possible application scenario, the wavelength band of the light output by the first light source may be 1260-1280nm, 1284-1288nm, 1290-1310nm, or 1340-1344nm, so that each first optical channel 22 may support a 50G transmission rate. Alternatively, the first pool of light sources may output other bands of light such that the first optical channel 22 supports a higher transmission rate.

In a possible implementation manner, the optical line terminal 10 may further include a first adjusting module 23. The first adjustment module 23 may adjust the total power of the light output from the first pool of light sources 20 to the first optical power distribution module 21. In other words, the first adjusting module 23 may adjust the power of the light output from the first light source cell 20.

The optical line terminal 10 may also include a control module 24. The control module 24 may be connected to each first optical power detection unit 301, and may receive the actual downlink power of each first optical channel 22. The control module 24 may be connected to the first adjustment module 23, and the total power of the light output by the first light source cell 20 is adjusted by controlling the first adjustment module 23.

Referring to fig. 2, the control module 24 may receive the downlink power value detected by the first optical power detecting unit 301 in each first optical channel 22. The control module 24 may be connected to an operation and maintenance management system, which may provide the optical power requirement of the first band of each load link, that is, the target power value of the first band of each load link, where the first band is the band of light transmitted on the first optical channel 22. For each first optical channel 22, the target power value for the first band of the load link to which the first optical channel 22 is connected is also the target power value for the first optical channel 22. Optionally, the operation and maintenance management system has the capability to acquire or determine the actual optical power budget value of the downstream channel. The operation and maintenance management system may be a system of an operator. The operation and maintenance management system can acquire or calculate a target power value of at least one wave band of each load link.

As can be seen from the above description, the control module 24 may receive the downlink power value of each first optical channel 22, and the target power value of the first optical channel 22. For each first optical channel 22, the control module 24 may compare whether the downlink optical power of the first optical channel 22 reaches the target power value of the first optical channel 22. The downlink optical power of the first optical channel 22 is greater than or equal to the target power value of the first optical channel 22, and the downlink optical power of the first optical channel 22 reaches the target power value of the first optical channel 22. The downlink optical power of the first optical channel 22 is smaller than the target power value of the first optical channel 22, and the downlink optical power of the first optical channel 22 does not reach the target power value of the first optical channel 22.

If the downlink optical power of a first optical channel 22 does not reach the target power value of the first optical channel 22, the power requirement of the load link connected to the first optical channel 22 cannot be supported. In the embodiment of the application, the first optical channel of which the downlink optical power does not reach the target power value is referred to as a target first optical channel.

The control module 24 may determine the number of target first optical channels by comparing whether the downlight power of each first optical channel 22 reaches the corresponding target power value. If one or more target first light channels are present, the control module 24 may adjust the total power of the light output by the first pool of light sources 20 via the first adjustment module 23. The control module 24 can regulate the total power of the light output by the first light source pool 20 through the first regulating module 23, after the light output by the first light source pool 20 is distributed by the first light power distribution module, the power of the light output to each first light channel 22 is increased, so that the actual downlink light power of each first light channel 22 is increased, and the power requirement of a connected load link is met.

In some examples, the control module 24 may calculate the driving current voltage level of the first light source pool 20 based on all the downlink optical channel link optical power budget values (i.e. the target power values of the first optical channel 22) obtained from the operation and maintenance management system, and the measured current values (i.e. the downlink power values of the first optical channel 22). The control module 24 can adjust the total optical power output by the first light source pool 20 by controlling the first adjusting module 23 to adjust the driving current and voltage, so that the output optical power of each downlink optical channel (i.e. the first optical channel 22) can meet the requirement or requirement of the link optical power budget value (also the target power value) obtained in the operation and maintenance system.

In particular implementations, control module 24 may compare the target power value and the downstream power value for each first optical channel 22 for the first optical channel 22. If there is at least one first optical channel with a target power value greater than the downlink power value, that is, at least one target first optical channel exists, the control module 24 may calculate a difference value (denoted as a target difference value) between the downlink power value of each first optical channel 22 and the target power value corresponding to the first optical channel, and the control module 24 may calculate the target driving current voltage value of the first light source pool 20 according to the target difference value corresponding to each first optical channel 22. The control module 24 may send information characterizing or carrying the target drive current voltage value to the first regulation module 23. The first adjustment module 23 may adjust the power output from the first light source cell 20 according to the target driving current voltage value.

In some application scenarios, after the control module 24 adjusts the total power of the light output by the first light source pool 20 through the first adjusting module 23, the specifically increased power amount of the total power of the light output by the first light source pool 20 may be related to the difference between the downlink optical power of the target first optical channel and the corresponding target power value, or may be related to the number of first optical channels 22. The application is not so limited. In an actual application scenario, after the total power of the light output by the first light source pool 20 increases, the actual downlink power value of the first light channel 22 may reach the target power value. Some of the actual downstream power values of first optical channels 22 may be greater than their target power values.

In some possible application scenarios, one or more ONUs may be included in the load link to which each first optical channel 22 in the optical line terminal 10 is connected. Alternatively, referring to fig. 3, the load link to which the first optical channel 22 is connected may include a plurality of ONUs and splitters. The optical splitters in the load link may split the optical signal provided by the connected first optical channel 22 and provide the split optical signal to the multiple ONUs.

The optical line terminal 10 provided in any of the above embodiments may be used to provide an optical signal transmission rate. The embodiment of the present application also provides an optical line terminal 20, which can provide two optical signal transmission rates. Fig. 4 illustrates a schematic structure of an optical line terminal according to an exemplary embodiment. The optical line terminal 20 may include a second light source pool 40, a second optical power distribution module 41, and a plurality of second optical channels 42. The optical line terminal 20 may further include the aforementioned first light source pool 20, the first optical power distribution module 21, and a plurality of optical channels 42. The connection relationship and the functions of the first light source pool 20, the first optical power distribution module 21, and the plurality of optical channels 42 can be referred to the related description in the foregoing embodiments, and will not be repeated here.

The second light source pool 40 may be connected with a second light power distribution module 41. The second pool of light sources 40 may have the ability to output light or function as light sources. The second pool of light sources 40 may provide second light sources to the second optical power distribution module 41. The second optical power distribution module 41 may be connected to a plurality of second optical channels 42, and the second optical power distribution module 41 may have a light splitting capability, and may output the second light source after power distribution to the connected second optical channels 42. In some examples, the second optical power distribution module 41 may include a structure such as an optical splitter. The second optical power distribution module 41 may divide one light source into multiple light sources and output the light sources. Alternatively, the second optical power distribution module 41 may divide the optical signal provided by the second light source pool equally and output the divided optical signal to each second optical channel 42. For example, assuming that the number of the second optical channels 42 is 3, the second optical power distribution module 41 may uniformly divide the light output from the second light source pool 40 into 3 paths and output the 3 paths to the 3 second optical channels 42, respectively. Each second optical channel 42 receives one third of the optical power output by the second pool of light sources 40. It can be seen that the total power of the light output by the second pool of light sources 40 is also increased by the power of the light received by each second light channel 42.

In the embodiment of the present application, each of the second optical channels 42 is identical or similar in structure. Each second optical channel 42 may be connected to a load link for providing an optical signal to the load link. Each of the second optical channels 42 may include a second optical power detection unit 501. The second optical power detection unit 502 may include a semiconductor photodetector or the like. The second optical power detection unit 501 is configured to detect the downlink optical power of the second optical channel 42. Such a design may enable the determination of the downstream optical power of each second optical channel 42. In the embodiment of the present application, the downlink optical channel of the second optical channel 42 may be the detected power of the optical signal output by the second optical channel 42 to the connected load link, which may be the output power of the second optical channel 42.

The total power of the light sources provided by the second light source pool to the second optical power distribution 41 may be adjusted according to the downlink optical power of each second optical channel and the target power value (which may be understood as an expected or desired power value) of each second optical channel, so that the actual downlink optical power of each second optical channel approaches or reaches the corresponding target power value, that is, the power requirement of the load link connected by each second optical channel.

In one possible design, referring again to fig. 4, each second optical channel 42 may further include a second modulation transmitting unit 502. The second modulation transmitting unit 502 may have optical modulation capability and transmitting capability. The second modulation transmitting unit 502 may modulate the optical signal received by the second optical channel 42, record the service signal, and output the service signal to the load link. The second modulation transmitting unit 502 may include components such as an optical modulator, so as to implement optical modulation capability and transmitting capability, and the specific structure of the second modulation transmitting unit 502 is not limited in the present application.

In a possible application scenario, the wavelength band of the light output by the second light source pool 40 may be 1260nm-1360nm or 1480nm-1500nm, so that each second light channel 42 may support a 1G transmission rate. The wavelength band of the light output by the second light source pool can be 1260nm-1280nm or 1575-1679nm, so that each second light channel 42 can support 10G transmission rate. In another possible application scenario, the wavelength band of the light output by the second light source may be 1260-1280nm, 1284-1288nm, 1290-1310nm, or 1340-1344nm, so that each second optical channel 42 may support a 50G transmission rate. Alternatively, the second pool of light sources may output other bands of light such that the second optical channel 42 supports a higher transmission rate.

In the optical line terminal 20, the wavelength band of the light outputted from the first light source cell 20 is denoted as a first wavelength band, and the wavelength band of the light outputted from the second light source cell 40 is denoted as a second wavelength band. In some examples, the first band and the second band are the same band. The transmission rates of the first optical channel 22 and the second optical channel 42 are the same. In other examples, the first band and the second band are different bands. The transmission rates of the first optical channel 22 and the second optical channel 42 are different. Alternatively, the first optical channel 22 may support a 10G optical signal transmission rate and the second optical channel 42 may support a 50G optical signal transmission rate.

In some possible application scenarios, as shown in fig. 4, the first light source pool 20 in the optical line terminal 20 provides light in the first wavelength band, and the second light source pool 40 also provides light in the first wavelength band. Of the load links to which the optical line terminal 20 is connected, one load link is connected to one optical channel, that is, one load link is connected to only the first optical channel 22, or one load link is connected to only the second optical channel 42.

It should be understood that the load links, the first optical channels, and the second optical channels shown in fig. 4 are only used to illustrate that one load link can only connect one optical channel, and are not specific limitations of the number of load links, the number of first optical channels, and the number of second optical channels. In an actual application scenario, the number of first optical channels 22, the number of second optical channels 42, and the number of load lines may be preconfigured or dynamically configured according to actual requirements.

One or more ONUs may be included in the load link to which each first optical channel 22 in the optical line terminal 20 is connected. Alternatively, the load link to which the first optical channel 22 is connected may include a plurality of ONUs and splitters. The optical splitters in the load link may split the optical signal provided by the connected first optical channel 22 and provide the split optical signal to the multiple ONUs. One or more ONUs may be included in the load link to which each second optical channel 42 in the optical line terminal 20 is connected. Alternatively, the load link to which the second optical channel 42 is connected may include a plurality of ONUs and splitters. The optical splitters in the load link may split the optical signal provided by the connected second optical channel 42 and provide the split optical signal to the plurality of ONUs.

In other possible application scenarios, as shown in fig. 5, the first light source pool 20 in the optical line terminal 20 provides light in a first wavelength band, and the second light source pool 40 provides light in a second wavelength band, where the first wavelength band is different from the second wavelength band. Any load link among load links connected to the optical line terminal 20 may be connected to the first optical channel 22 and/or the second optical channel 42. For example, one load link may connect only first optical channel 22 or second optical channel 42; or a load link may connect a first optical channel 22 and a second optical channel 42. It should be understood that one load link is connected to one first optical channel 22 and one second optical channel 42 in fig. 5 is only described as an example, and is not a specific limitation of the number of load links, the number of first optical channels, and the number of second optical channels. In an actual application scenario, the number of first optical channels 22, the number of second optical channels 42, and the number of load lines may be preconfigured or dynamically configured according to actual requirements.

In a possible implementation manner, the optical line terminal 20 may further include a first adjusting module 23 and a second adjusting module 43.

The first adjustment module 23 may adjust the total power of the light output from the first pool of light sources 20 to the first optical power distribution module 21. In other words, the first adjusting module 23 may adjust the power of the light output from the first light source cell 20. The second adjustment module 43 may adjust the total power of the light output by the second light source cell 40 to the second light power distribution module 41. In other words, the first adjusting module 23 may adjust the power of the light output from the first light source cell 20.

The optical line terminal 20 may also include a control module 24. The control module 24 may be connected to each first optical power detection unit 301, and may receive the actual downlink power of each first optical channel 22. The control module 24 may be connected to the first adjustment module 23, and the total power of the light output by the first light source cell 20 is adjusted by controlling the first adjustment module 23. The control module 24 may be connected to each second optical power detection unit 501, and may receive the actual downlink power of each second optical channel 42. The control module 24 may be connected to the second adjustment module 43, and the total power of the light output by the second light source cell 40 is adjusted by controlling the second adjustment module 43.

Referring to fig. 4, the control module 24 may receive the downlink power value detected by the first optical power detecting unit 301 in each first optical channel 22, and receive the downlink power value detected by the second optical power detecting unit 301 in each second optical channel 42.

The control module 24 may be connected to an operation and maintenance management system, which may provide the optical power requirement of the first band of the load link connected to each first optical channel 22, that is, the target power value of the first band of the load link connected to each first optical channel 22, where the first band is the band of the light transmitted on the first optical channel 22. For each first optical channel 22, the target power value for the first band of the load link to which the first optical channel 22 is connected is also the target power value for the first optical channel 22.

Similarly, the operation and maintenance management system may provide the optical power requirement of the second band of the load link connected by each second optical channel 42, that is, the target power value of the second band of the load link connected by each second optical channel 42, where the second band is the band of the transmission light on the second optical channel 42. For each second optical channel 42, the target power value for the second band of the load link to which that second optical channel 42 is connected is also the target power value for that second optical channel 42.

Optionally, the operation and maintenance management system has the capability to acquire or determine the actual optical power budget value of the downstream channel. The operation and maintenance management system may be a system of an operator. The operation and maintenance management system can acquire or calculate a target power value of at least one wave band of each load link.

As can be seen from the above description, the control module 24 may receive the downlink power value of each first optical channel 22, and the target power value of the first optical channel 22. For each first optical channel 22, the control module 24 may compare whether the downlink optical power of the first optical channel 22 reaches the target power value of the first optical channel 22. The downlink optical power of the first optical channel 22 is greater than or equal to the target power value of the first optical channel 22, and the downlink optical power of the first optical channel 22 reaches the target power value of the first optical channel 22. The downlink optical power of the first optical channel 22 is smaller than the target power value of the first optical channel 22, and the downlink optical power of the first optical channel 22 does not reach the target power value of the first optical channel 22.

If the downlink optical power of a first optical channel 22 does not reach the target power value of the first optical channel 22, the power requirement of the load link connected to the first optical channel 22 cannot be supported. In the embodiment of the application, the first optical channel of which the downlink optical power does not reach the target power value is referred to as a target first optical channel.

The control module 24 may determine the number of target first optical channels by comparing whether the downlight power of each first optical channel 22 reaches the corresponding target power value. If one or more target first light channels are present, the control module 24 may adjust the total power of the light output by the first pool of light sources 20 via the first adjustment module 23. The control module 24 can regulate the total power of the light output by the first light source pool 20 through the first regulating module 23, after the light output by the first light source pool 20 is distributed by the first light power distribution module, the power of the light output to each first light channel 22 is increased, so that the actual downlink light power of each first light channel 22 is increased, and the power requirement of a connected load link is met.

As can be seen from the above description, the control module 24 may receive the downlink power value of each second optical channel 42, and the target power value of the second optical channel 42. For each second optical channel 42, the control module 24 may compare whether the downstream optical power of the second optical channel 42 reaches the target power value for the second optical channel 42. The downstream optical power of the second optical channel 42 is greater than or equal to the target power value of the second optical channel 42, and the downstream optical power of the second optical channel 42 reaches the target power value of the second optical channel 42. The downlink optical power of the second optical channel 42 is smaller than the target power value of the second optical channel 42, and the downlink optical power of the second optical channel 42 does not reach the target power value of the second optical channel 42.

If the downlink optical power of a second optical channel 42 does not reach the target power value of the second optical channel 42, the power requirement of the load link connected to the second optical channel 42 cannot be supported. In the embodiment of the application, the second optical channel of which the downlink optical power does not reach the target power value is recorded as a target second optical channel.

The control module 24 may determine the number of target second optical channels by comparing whether the downlight power of each second optical channel 42 reaches the corresponding target power value. If one or more target second light channels are present, the control module 24 may adjust the total power of the light output by the second pool of light sources 20 via the second adjustment module 23. The control module 24 can increase the total power of the light output by the second light source pool 20 through the second adjusting module 23, after the light output by the second light source pool 20 is distributed by the second light power distribution module, the power of the light output to each second light channel 42 is increased, so that the actual downlink light power of each second light channel 42 is increased, and the power requirement of a connected load link is met.

The manner in which the control module 24 adjusts the total light power of the first light source pool 20 can be referred to in the previous embodiments, and will not be described herein. In some examples, the control module 24 may calculate the driving current voltage level of the second light source pool 40 based on all the downlink optical channel link optical power budget values (i.e. the target power value of the second optical channel 42) obtained from the operation and maintenance management system, and the measured current value (i.e. the downlink power value of the second optical channel 42). The control module 24 can adjust the total optical power output by the second light source pool 40 by controlling the second adjusting module 43 to adjust the driving current and voltage, so that the output optical power of each downlink optical channel (i.e. the second optical channel 42) can meet the requirement or requirement of the link optical power budget value (also the target power value) obtained in the operation and maintenance system.

In particular implementations, control module 24 may compare the target power value and the downstream power value for each second optical channel 42. If there is at least one second optical channel with a target power value greater than the downlink power value, that is, at least one target second optical channel exists, the control module 24 may calculate a difference (denoted as a target difference) between the downlink power value of each second optical channel 42 and the target power value corresponding to the second optical channel, and the control module 24 may calculate the target driving current voltage value of the second light source pool 40 according to the target difference corresponding to each second optical channel 42. The control module 24 may send information characterizing or carrying the target drive current voltage value to the second regulation module 43. The second adjustment module 43 may adjust the power output from the second light source cell 40 according to the target driving current voltage value.

In some application scenarios, after the control module 24 adjusts the total power of the light output by the first light source pool 20 through the first adjusting module 23, the specifically increased power amount of the total power of the light output by the first light source pool 20 may be related to the difference between the downlink optical power of the target first optical channel and the corresponding target power value, or may be related to the number of first optical channels 22. The application is not so limited. After the control module 24 adjusts the total power of the light output by the second light source pool 40 through the second adjusting module 23, the specific increased power amount of the total power of the light output by the second light source pool 40 may be related to the difference between the downlink optical power of the target second optical channel and the corresponding target power value, or may be related to the number of the second optical channels 42. The application is not so limited. In an actual application scenario, after the total power of the light output by the first light source pool 20 increases, the actual downlink power value of the first light channel 22 may reach the target power value. Some of the actual downstream power values of first optical channels 22 may be greater than their target power values. After the total power of the light output by the second light source pool 40 increases, the actual downlink power value of the second light channel 42 can reach its target power value. Some of the actual downstream power values of second optical channels 42 may be greater than their target power values.

Based on the same inventive concept, the embodiment of the present application provides a power adjustment method, which can be applied to the passive optical network or the optical line terminal provided in any one of the foregoing embodiments. As shown in fig. 6, the method may include the steps of:

s601, detecting the downlink optical power of each optical channel.

S602, if there are one or more target light channels, adjusting the total power of the light source pool output light providing the light source for the target light channels.

In this embodiment, the target optical channel may be an optical channel whose downlink optical power does not reach the corresponding target power value.

In one possible design, the target power value corresponding to each optical channel is provided by the operation and maintenance management system. The operation and maintenance management system can provide the target power value of each optical channel. The passive optical network may receive a target power value for each of a plurality of optical channels provided by the operation and maintenance management system.

Fig. 7 illustrates a power adjustment method of an optical network according to an exemplary embodiment, which may be applied to the optical line terminal illustrated in fig. 4, wherein a wavelength band of light output from a first light source pool may be the same as or different from a wavelength band of light output from a second light source pool. The method may also be applied to the optical line terminal shown in fig. 5, in which the wavelength band of the light output from the first light source cell is different from the wavelength band of the light output from the second light source cell. The first light source pool is connected to provide light sources for a plurality of first light channels. The second light source pool provides light sources for a plurality of second light channels. As shown in fig. 7, the method may include the steps of:

S701, detecting the downlink optical power of each first optical channel and detecting the downlink optical power of each second optical channel.

S702, if one or more target first light channels exist, the total power of the light output by the first light source pool is regulated.

The target first optical channel is a first optical channel in which the downlink optical power in the plurality of first optical channels does not reach the corresponding target power value.

S703, if there are one or more target second light channels, then the total power of the light output by the first light source pool is increased.

The target second optical channel is a second optical channel in which the downlink optical power in the plurality of second optical channels does not reach the corresponding target power value.

In one possible design, the target power value corresponding to each optical channel is provided by the operation and maintenance management system. The operation and maintenance management system can provide the target power value of each first optical channel and the target power value of each second optical channel. The passive optical network may receive the target power value of each optical channel in the plurality of first optical channels provided by the operation and maintenance management system. The passive optical network may receive the target power value of each optical channel in the plurality of second optical channels provided by the operation and maintenance management system.

In some possible embodiments, aspects of the power adjustment method provided by the present application may also be implemented in the form of a program product, which includes a program code for causing a computer device to perform some or all of the steps of the power adjustment method according to the various exemplary embodiments of the present application described above, when the program product is run on the computer device, for example, the computer device may perform some or all of the steps as shown in fig. 6 or 7.

The embodiment of the application also provides a computer storage medium, wherein the computer storage medium is stored with computer executable instructions for realizing the power adjustment method according to any embodiment of the application.

Wherein a storage medium may be any available medium that can be accessed by a computer. Taking this as an example but not limited to: the computer readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (11)

1. An optical line terminal, comprising:

the first light source pool is connected with the first light power distribution module and is used for providing a first light source for the light power distribution module;

the first optical power distribution module is connected with a plurality of first optical channels and is used for distributing the power of the first light source and outputting the distributed power to the connected first optical channels;

Wherein, any first optical channel comprises a first optical power detection unit, and the first optical power detection unit is used for detecting the downlink optical power of any first optical channel; the total power of the light source provided by the first light source pool to the first light power distribution module is adjusted based on the downlink light power of each first light channel in the plurality of first light channels and the target power value of each first light channel.

2. The optical line terminal of claim 1, wherein the optical line terminal further comprises: the first adjusting module is connected with the first light source pool;

the first adjusting module is used for adjusting the total power of the light sources provided by the first light source pool to the first light power distribution module.

3. The optical line terminal of claim 2, wherein the optical line terminal further comprises: the control module is connected with each first optical power detection unit in the plurality of first optical channels and connected with the first adjusting module;

the control module is used for:

judging whether the downlink optical power of each first optical channel reaches the target power value of the first optical channel according to the downlink optical power of each first optical channel in the plurality of first optical channels and the target power value of each first optical channel in the plurality of first optical channels;

And if one or more target first optical channels exist, controlling the first adjusting module to adjust the total power of the light sources provided by the first light source pool to the first optical power distribution module, wherein the target first optical channels are first optical channels with the downlink optical power not reaching the corresponding target power values.

4. The optical line terminal of claim 3, wherein the optical line terminal further comprises:

the second light source pool is connected with the second power distribution module and is used for providing a second light source for the optical power distribution module, and the wave band of the second light source is different from that of the first light source;

the second optical power distribution module is connected with a plurality of second optical channels and is used for distributing the power of the second light source and outputting the distributed power to the connected second optical channels;

wherein, any second optical channel comprises a second optical power detection unit, and the second optical power detection unit is used for detecting the downlink optical power of any second optical channel; the total power of the light source provided by the second light source pool to the second light power distribution module is adjusted based on the downlink light power of each second light channel in the plurality of second light channels and the target power value of each second light channel.

5. The optical line terminal of claim 4, wherein the optical line terminal further comprises: the second adjusting module is connected with the second light source pool; the second adjusting module is used for adjusting the total power of the light sources provided by the second light source to the second optical power distribution module.

6. The optical line terminal of claim 5, wherein the control module is further configured to:

judging whether the downlink optical power of each second optical channel reaches the target power value of the second optical channel according to the downlink optical power of each second optical channel in the plurality of second optical channels and the target power value of each second optical channel in the plurality of second optical channels;

and if one or more target second optical channels exist, controlling the second adjusting module to adjust the total power of the light sources provided by the second light source pool to the second optical power distribution module, wherein the target second optical channels are second optical channels with the downlink optical power not reaching the corresponding target power values.

7. The optical line terminal according to any one of claims 1 to 6, wherein the wavelength band of the light output from the first light source pool is any one of the following wavelength bands:

1260nm-1360nm、1480nm-1500nm、1260nm-1280nm、1575nm-1679nm、1260nm-1280nm、1284nm-1288nm、1290nm-1310nm、1340nm-1344nm。

8. A passive optical network comprising a plurality of load links and an optical line terminal according to any of claims 1-7.

9. A power adjustment method applied to an optical line terminal, the optical line terminal including a plurality of optical channels, the method comprising:

detecting the downlink optical power of each optical channel in the plurality of optical channels;

and if one or more target optical channels exist, adjusting the total power of the light source pool output light for providing a light source for the target optical channels, wherein the target optical channels are the optical channels in which the downlink optical power in the optical channels does not reach the corresponding target power value.

10. The method of claim 9, wherein the method further comprises:

and receiving the target power value of each optical channel in the plurality of optical channels provided by the operation and maintenance management system.

11. A computer-readable storage medium having a computer program stored therein, characterized in that: which computer program, when being executed by a processor, implements the method of claim 9 or 10.