阅读说明：本技术 一种光网络功率控制自动方法及装置、存储介质 (Automatic method and device for optical network power control and storage medium ) 是由 刘建国 李盛 崔路遥 耿佳宁 胡晓佳 张子源 刘佩宝 于 2019-09-30 设计创作，主要内容包括：本申请公开了一种光网络功率自动控制方法及装置、存储介质,所述光网络功率自动控制方法包括：根据光纤连接路径建立功率管理虚路径；根据所述功率管理虚路径执行功率管理操作。本申请实施例提供的方案,实现了光网络功率自动控制。(The application discloses an optical network power automatic control method, an optical network power automatic control device and a storage medium, wherein the optical network power automatic control method comprises the following steps: establishing a power management virtual path according to the optical fiber connection path; and executing power management operation according to the power management virtual path. The scheme provided by the embodiment of the application realizes the automatic control of the power of the optical network.)

1. An optical network power automatic control method comprises the following steps:

establishing a power management virtual path according to the optical fiber connection path;

and executing power management operation according to the power management virtual path.

2. The method of claim 1,

the power management virtual path includes at least one of: a first type control unit and a second type control unit;

the first type control unit is used for controlling the power of single-wavelength optical signals of optical uplink and downlink nodes on the optical fiber connection path and executing power control according to an absolute power target in the process of power control;

the second type of control unit is configured to perform power control on a multiplexing section on the optical fiber connection path according to a relative power target, where a path between adjacent optical add-drop nodes on the optical fiber connection path is used as a multiplexing section.

3. The method of claim 2, wherein the performing power control by the first type of control unit according to the absolute power target during power control comprises: and determining an absolute power target according to the transmitted information of the single-wavelength optical signal, and controlling the optical power of the single-wavelength optical signal at the optical uplink and downlink nodes to reach the absolute power target.

4. The method according to claim 2, wherein the second type of control unit is configured to perform power control on the multiplexed sections on the optical fiber connection path according to a relative power target, and comprises: and for any multiplexing section, controlling the difference value of the input power and the output power of the multiplexing section to reach a relative power target.

5. The method according to claim 4, wherein the controlling the difference between the input power and the output power of the multiplexing section to reach the relative power target is achieved by:

determining target attenuation values and target gain values of an upstream optical amplifier node and a downstream optical amplifier node of a multiplexing section according to input power of the upstream optical amplifier node, output power of the downstream optical amplifier node, attenuation values and gain values of the upstream optical amplifier node and attenuation values and gain values of the downstream optical amplifier node;

and adjusting the attenuation values of the upstream optical amplifier node and the downstream optical amplifier node of the multiplexing section to be the target attenuation value, and adjusting the gain values of the upstream optical amplifier node and the downstream optical amplifier node of the multiplexing section to be the target gain value.

6. The method of claim 2, wherein the performing the power management operation according to the power management virtual path comprises:

detecting whether the first type of control unit reaches a first power control target;

if the first type of control unit does not reach the first power control target, starting the second type of control unit to carry out power control;

and after the second type of control unit reaches a second power control target, detecting whether the first type of control unit reaches the first power control target, and if not, starting the first type of power control unit to control the power so as to reach the first power control target.

7. The method according to any of claims 1 to 6, wherein the method further comprises: the power management virtual path further comprises a third type control unit, and the third type control unit is used for controlling the power difference between different wavelength signals in the same optical channel to be kept unchanged.

8. The method according to any of claims 1 to 6, wherein the method further comprises updating the power management virtual path upon detecting a change in the optical fiber connection path; and executing power management operation according to the updated power management virtual path.

9. An automatic power control device for an optical network, comprising a memory and a processor, wherein the memory stores a program, and the program, when read and executed by the processor, implements the automatic power control method for an optical network according to any one of claims 1 to 8.

10. A computer readable storage medium, wherein the computer readable storage medium stores one or more programs, which are executable by one or more processors to implement the optical network power automatic control method according to any one of claims 1 to 8.

Technical Field

The embodiment of the invention relates to but is not limited to an automatic optical network power control method, an automatic optical network power control device and a storage medium.

Background

According to the shannon channel capacity formula, the capacity of the interfered continuous transmission channel is expressed as follows:the total capacity of the channel is affected by the channel bandwidth W and the channel signal-to-noise ratio S/N. At the limit even if the channel bandwidth is increased, the channel capacity is limited only by the signal-to-noise ratio of the channel, regardless of the channel bandwidth, and in the case of white noise:therefore, how to increase the signal-to-noise ratio of the channel in the high-speed optical transport network is one of the most important issues to solve the high-speed signal transmission, wherein how to design and control the signal power and the noise power in the optical transport network is the key factor to solve the issue, and the signal-to-noise ratio of the system will be better when the signal power is higher under the same noise condition.

When designing signal power in an optical transport network, a general design idea is to determine the receiving sensitivity of a signal receiver, that is, the minimum power that the receiver needs to use when achieving effective signal reception. The transmission power of the transmitter is then set in combination with the power loss and power penalty of the system. Briefly, the target power of the transmitter is defined as:

P_det＝P_rec+C_l+M_s (1-1)

where Prec is the receiver sensitivity power, Cl is the system line loss, and Ms is the system margin. The receiver sensitivity is a relatively easy to control quantity. The equipment manufacturer can ensure receiver sensitivity by presetting the quantity, using a specialized make or looking for a specialized chip supplier. The receiver sensitivity is relatively stable over time and does not change significantly before the device ages. However, system line losses tend to vary greatly, and even with efficient design, actual network construction may not be as expected. In addition, the changes in the external environment and the natural aging of the optical fiber during the operation of the network can cause the loss of the optical fiber to be different from the expected loss. In particular, the optical power between different services in the system can also affect each other. After a new service is added to the system, the power of the short-wavelength service will be shifted to the long wavelength, and the service power value that has been adjusted in place will change due to the new or deleted service. The process of dynamic maintenance is also extremely complex, considering various factors at what level the power at various points in the network is maintained. The related art can not meet the actual use requirement, and the improvement is urgently needed.

Disclosure of Invention

At least one embodiment of the invention provides an automatic optical network power control method, an automatic optical network power control device, an automatic optical network power control system and a storage medium, which are suitable for network environment changes.

At least one embodiment of the present application provides an optical network power automatic control method, including:

establishing a power management virtual path according to the optical fiber connection path;

and executing power management operation according to the power management virtual path.

At least one embodiment of the present application provides an automatic optical network power control device, including a memory and a processor, where the memory stores a program, and when the program is read and executed by the processor, the automatic optical network power control device implements the automatic optical network power control method according to any embodiment.

At least one embodiment of the present application provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the method for automatic power control of an optical network according to any one of the embodiments.

Compared with the related art, an embodiment of the present invention provides an optical network power automatic control method, including: establishing a power management virtual path according to the optical fiber connection path; and executing power management operation according to the power management virtual path. The scheme provided by the embodiment can solve the problem of abnormal and complex dynamic maintenance caused by the reasons of external environment change, natural aging of optical fibers, mutual influence of a plurality of wavelength powers and the like in an optical network system, and realize the automatic control function of the optical network power.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a flowchart of an optical network power automatic control method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a control unit according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an optical network according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an optical network according to another embodiment of the present invention;

fig. 5 is a schematic diagram of an optical network power automatic control apparatus according to an embodiment of the present invention;

FIG. 6 is a block diagram of a computer-readable storage medium provided by an embodiment of the invention;

fig. 7 is a block diagram of an optical network power automatic control system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

An embodiment of the present invention provides an automatic optical network power control method, which aims to solve the problem that in an optical network system, dynamic maintenance of the system is abnormally complex due to external environment changes, natural aging of optical fibers, mutual influence of multiple wavelength powers, and the like.

In addition, although the related art can automatically control the optical power of each node and the main optical power in the optical network system, when the system is expanded, automatic activation cannot be completed according to the actual characteristics and the line condition of a newly activated service, and normal transmission of the existing service cannot be guaranteed while the new service is activated. An embodiment of the present invention provides a scheme, which solves the problem that automatic activation cannot be completed according to actual characteristics and line conditions of a newly activated service when an existing system is expanded, and achieves an automatic control function for optical network power.

As shown in fig. 1, an embodiment of the present invention provides an optical network power automatic control method, including:

step 101, establishing a power management virtual path according to an optical fiber connection path;

specifically, the optical fiber connection path is abstracted, and a power management virtual path is established.

And 102, executing power management operation according to the power management virtual path.

Abstracting the optical fiber connection path comprises abstracting optical uplink and downlink nodes on the optical fiber connection path, establishing a first type control unit to control the absolute power of the optical uplink and downlink nodes, abstracting sub-paths on the optical fiber connection path, and establishing a second type control unit to control the relative power of the sub-paths. One sub-path is, for example, a multiplexing section between two adjacent optical uplink and downlink nodes on the optical fiber connection path. In an embodiment, the power management virtual path includes at least one of: a first type control unit and a second type control unit; the first type of control unit is used for carrying out power control on the single-wavelength signals on the optical transmission path according to an absolute power target; specifically, the first type control unit is configured to control power of a single-wavelength optical signal of an optical add/drop node on the optical fiber connection path, and execute power control according to an absolute power target in a power control process. The Optical Add/Drop node is, for example, an OADM (Optical Add-Drop Multiplexer). It should be noted that one control unit of the first type may be established for each single-wavelength optical signal, or one control unit of the first type may be established for a plurality of single-wavelength optical signals.

The second type of control unit is used for carrying out power control on the multi-wavelength signals on the optical transmission path according to the relative power target; specifically, the second type of control unit is configured to perform power control on a multiplexing section (or referred to as a span) on the optical fiber connection path according to a relative power target, where a path between adjacent optical add-drop nodes on the optical fiber connection path is used as a multiplexing section. It should be noted that one second-type control unit may be created for each multiplexing segment, and only one second-type control unit may be created for multiple spans, which is not limited in this application.

The absolute power target is to control the power of the single-wavelength optical signal to be a fixed power. For example, the power of the single wavelength signal at each OADM node is controlled to be a fixed power. The fixed power may be set as desired, for example, based on transmission requirements.

In one embodiment, the performing, by the first type control unit, power control according to the absolute power target in the process of power control includes: and determining an absolute power target according to the transmitted information of the single-wavelength optical signal, and controlling the optical power of the single-wavelength optical signal at the optical uplink and downlink nodes to reach the absolute power target. The information of the single-wavelength optical signal includes, but is not limited to, a center frequency, a modulation pattern, a bandwidth, a type of optical fiber to be transmitted, and the like of the single-wavelength optical signal.

In one embodiment, the absolute power target comprises: the single wavelength optical signal enters the fiber optical power at the target of the OADM; it should be noted that OADM is merely an example, and if there are other devices as optical uplink and downlink nodes in the optical network, the OADM may also be the target fiber-incoming optical power of the device.

In an embodiment, the second type of control unit is configured to perform power control on the multiplexed sections on the optical fiber connection path according to a relative power target, and includes: and for any multiplexing section, controlling the difference value of the input power and the output power of the multiplexing section to reach a relative power target, namely keeping the difference value unchanged or meeting a preset threshold. In the embodiment, relative power control is used, the control logic is simple, and the complexity of power control is reduced.

In an embodiment, the controlling the optical power of the single-wavelength optical signal at the optical add/drop node to reach the absolute power target includes: the following operations are performed periodically: and acquiring the current fiber-entering optical power of the single-wavelength optical signal at the optical uplink and downlink node, and if the deviation between the current fiber-entering optical power and the target fiber-entering optical power meets a preset condition, adjusting the fiber-entering optical power of the single-wavelength optical signal at the optical uplink and downlink node to achieve the target fiber-entering optical power.

In an embodiment, the controlling the difference between the input power and the output power of the multiplexing section to reach the relative power target is implemented by:

determining target attenuation values and target gain values of an upstream optical amplifier node and a downstream optical amplifier node of a multiplexing section according to input power of the upstream optical amplifier node, output power of the downstream optical amplifier node, attenuation values and gain values of the upstream optical amplifier node and attenuation values and gain values of the downstream optical amplifier node; and adjusting the attenuation values of the upstream optical amplifier node and the downstream optical amplifier node of the multiplexing section to be the target attenuation value, and adjusting the gain values of the upstream optical amplifier node and the downstream optical amplifier node of the multiplexing section to be the target gain value. It should be noted that a deviation range may be set, and if the difference between the current attenuation value and the target attenuation value is within the deviation range, the attenuation value is not adjusted. If the difference between the current gain value and the target gain value is within the deviation range, the gain value is not adjusted. The attenuation value and the gain value may be set to different ranges of variation or may be set to the same range of variation. Similarly, the foregoing absolute power control may also set a deviation range, and when the difference between the fiber-entering optical power and the target fiber-entering optical power is within the preset deviation range, no adjustment is performed.

In an embodiment, said performing a power management operation according to said power management virtual path comprises:

detecting whether the first type of control unit reaches a first power control target;

if the first type of control unit does not reach the first power control target, starting the second type of control unit to carry out power control;

and after the second type of control unit reaches a second power control target, detecting whether the first type of control unit reaches a first power control target, and if not, starting the first type of control unit to control the power so as to reach the first power control target.

In this embodiment, the second control unit is first enabled to achieve the power control target, and then the first control unit is enabled to achieve the power control target, so as to achieve power control.

The above-mentioned process may be performed periodically, or triggered by an event, or received by an instruction, and so on.

In an embodiment, the method further comprises: the power management virtual path further comprises a third type control unit, and the third type control unit is used for controlling the power difference between different wavelength signals in the same optical channel to be kept unchanged. The power difference is the power difference. If the power of the optical signals with different wavelengths is the same, the power of the optical signals with different wavelengths is maintained to be the same. This can be achieved by controlling the gain and attenuation values of the optical add and drop nodes (e.g., OADM nodes).

In one embodiment, the method further comprises, upon detecting a change in the fiber optic connection path, updating the power management virtual path; and executing power management operation according to the updated power management virtual path. The solution provided by this embodiment can adapt to the change of the optical fiber connection path, and change the power management virtual path accordingly.

In an embodiment, the control units (the first type of control unit, the second type of control unit, and the third type of control unit) generally include, but are not limited to, a control module, a detection module, and an execution module, referring to fig. 2. The control module is used for receiving relevant parameters set by a user, executing a preset control algorithm and issuing a control command. The detection module is used for collecting and reporting the optical power parameters and the like required by the control module. The execution module is used for executing the control command issued by the control module to achieve the effect of automatic power control.

The optical network power control method provided by the embodiment of the invention can solve the problem of abnormal and complex dynamic maintenance caused by external environment change, optical fiber natural aging, mutual influence of a plurality of wavelength powers and the like in an optical network system by automatically controlling the single-wavelength absolute power and the uniform relative power of a plurality of wavelengths, and realizes the automatic control function of the optical network power. In addition, the method and the device solve the problems that in the prior art, the optical power of each node in an optical network system needs to be manually managed, the existing system cannot be automatically opened according to the actual characteristics and the line condition of a newly opened service when being expanded, and the problems of heavy engineering such as normal transmission of the existing service are not influenced. The scheme provided by the embodiment of the invention saves the labor cost and the maintenance and use cost in the later period of the project.

It should be noted that, in other embodiments, the first type control unit may also control the absolute power of only part of the optical uplink and downlink nodes on the optical fiber connection path, the second type control unit may also control the absolute power of only part of the multiplexing sections on the optical fiber connection path, or perform relative power control after combining a plurality of adjacent multiplexing sections, and so on.

The application is further illustrated by the following specific examples.

The first embodiment is as follows:

in this embodiment, the optical uplink and downlink nodes are OADMs.

The simple optical network power automatic control system, referring to fig. 3, includes a service transmitting unit 320, a service transmitting unit 321, and a corresponding service receiving unit 322. Wherein the transmitting unit 320 is connected to the corresponding receiving unit 322 via a plurality of OADM nodes 330, 331 and 332 and a plurality of OA nodes 340, 341, 342, 343, 344 and 345 via optical fiber links; the transmitting unit 321 is connected to a corresponding receiving unit 322 via a plurality of OADM nodes 333, 331, and 332 and a plurality of OA nodes 346, 347, 342, 343, 344, and 345 via optical fiber links.

In the opening stage, the optical network power automatic control system firstly obtains the topological data of the whole system. A preset algorithm is executed according to the topology data to create a power management virtual path 100. The power-managed virtual path 100 includes control elements of the second type and control elements of the third type. The second type control unit corresponds to the span, and is used for automatically controlling the gain value of the OA and the attenuation value of the adjustable attenuator managed by the second type control unit according to the input and output optical powers of the OA nodes and the OA nodes of the upstream and the downstream of the span, the gain value of the OA, the attenuation value of the adjustable attenuator and other information, so that the main optical power passing through meets the transmission requirement. The third type of control unit is used in a long-distance transmission network, and automatically adjusts the flatness of gain according to the optical performance degradation condition generated when the service optical signal to be transmitted is affected by the stimulated raman effect and the light scattering effect, so that the service optical signal after long-distance transmission meets the requirements (power value, signal-to-noise ratio and the like) of a receiver. Referring to fig. 3, the second class of control units comprises control units 306, 307, 308 and 309 responsible for controlling the main optical power performance of the OA-node 340 to OA-node 341 span, the OA-node 342 to OA-node 343 span, the OA-node 344 to OA-node 345 span, and the OA-node 346 to OA-node 347 span, respectively. The third type of control unit includes a control unit 310, which is responsible for controlling the main optical power performance in the long-distance transmission network, specifically, controlling the power difference of the optical signals of each wavelength in the same optical channel to be kept unchanged, or controlling the power of the optical signals of each wavelength to be the same.

In the operational phase, the control units 306, 307, 308 and 309 of the second type perform control periodically for the purpose of stabilization of the main light power. The input and output optical power, the gain value, the attenuation value of the adjustable attenuator and the like of the cross-section upstream and downstream OA nodes are collected by the detection module to be used as input parameters, a preset algorithm is executed, and the target gain value of the upstream and downstream OA nodes and the target attenuation value of the adjustable attenuator are calculated. And then, acquiring the current gain value of the OA and the attenuation value of the adjustable attenuator through a detection module, if the current gain value is inconsistent with the target gain value and the current attenuation value is inconsistent with the target attenuation value, starting an adjustment process, and adjusting the optical amplifier and the adjustable attenuator managed by the control unit to enable the actual gain value to approach the target gain value and the actual attenuation value to approach the target attenuation value. In addition, in order to reduce the number of times of adjustment and prolong the service life of the optical device, a deviation threshold of gain and attenuation can be set, and when the deviation of the actual value and the target value exceeds the deviation threshold, the adjustment process is started. For example, whether the gain value and the attenuation value of the node 341 need to be adjusted is determined according to the output optical power of the node 340 and the input optical power of the node 341 and the gain of the node 341.

Example two:

and a service opening stage, receiving new service configuration issued by an upper control management plane, and creating a corresponding first type control unit. The control module of the first type control unit executes a preset algorithm according to input parameters such as the center frequency, the modulation code pattern, the bandwidth, the type of the transmitted optical fiber and the like of the new service, so as to obtain the target fiber-entering optical power of the service at each OADM node. And then, starting an adjusting function if the actual value is inconsistent with the target value through the actual value of the current fiber-entering optical power acquired by the detection module. The control module of the first type control unit adjusts each managed OADM node through the execution module, so that the actual fiber-entering optical power of the channel at each OADM node tends to the target fiber-entering optical power, thereby completing the service provisioning function. Referring to fig. 3, control units 301, 302, 303, 304, and 305, which belong to a first class of control units, are responsible for controlling the channel optical power performance of channel 1 (where λ 1 is located), channel 2 (where λ 2 is located), channel 3 (where λ 3 is located), channel 4 (where λ 4 is located), and channel 5 (where λ 5 is located) at each OADM node. Specifically, the control unit 301 is responsible for controlling the channel optical power performance of the channel 1 at each OADM node, the control unit 302 is responsible for controlling the channel optical power performance of the channel 2 at each OADM node, the control unit 303 is responsible for controlling the channel optical power performance of the channel 3 at each OADM node, the control unit 304 is responsible for controlling the channel optical power performance of the channel 4 at each OADM node, and the control unit 305 is responsible for controlling the channel optical power performance of the channel 5 at each OADM node.

In the service operation phase, in order to maintain the stability of the channel optical power, the first type control units 301, 302, 303, 304 and 305 perform power control periodically. And starting an adjusting function if the actual value is inconsistent with the target value through the actual value of the current fiber-entering optical power of the OADM node acquired by the detection module. The control module of the control unit adjusts each managed OADM node through the execution module, so that the actual fiber-entering optical power of the channel at each OADM node tends to the target fiber-entering optical power, and the performance of the optical power of each channel is maintained in real time. In addition, in order to reduce the adjustment times and prolong the service life of the optical device, a deviation threshold of the fiber-entering optical power can be set, and when the difference between the actual fiber-entering optical power of the service light and the target fiber-entering optical power exceeds the deviation threshold, the adjustment process is started.

In addition, in combination with the power control process (referred to as a main optical power control process) mentioned in the first embodiment, when the main optical power and the channel power simultaneously start the control and adjustment process, the virtual power management path may decide an adjustment strategy in real time according to a preset algorithm, so as to complete automatic control of the channel power and the main optical power.

Example three:

a system for automatic power control of a complex optical network, referring to fig. 4, as shown in fig. 4, wherein: nodes 1, 2, 14, 15, 25, 26: a service sending end and a service receiving end. Nodes 3, 8, 13, 20: is a wavelength selector (such as an OADM). Nodes 4, 5, 6, 7, 9, 10, 11, 12, 16, 17, 18, 19, 21, 22, 23, 24: an optical power amplifying device (e.g., OA).

In the service switching, the attenuation value of the Optical fiber link is drastically changed due to natural conditions or human reasons during transmission, and the ASON (automatic Switched Optical Network) recovery usually occurs. The optical network power automatic control method provided by the embodiment of the invention is adopted to cooperate with the ASON dynamic rerouting function, so that the optical path change of the service signal can be effectively controlled and kept stable. Traffic initially travels through a plurality of OADM and OA nodes, such as nodes 3-4-5-8-9-10-13, and the optical fiber link between node 9 and node 10 is now broken and the optical transmission path is interrupted. ASON performs the function of restoring the route, and after recalculating the lightpath, it now needs to bypass node 9 and node 10 of the path from node 8 to node 13 and route node 20 to node 13, i.e. the new path is node 3-4-5-8-17-19-20-21-22-13. At this time, when the link through which the service passes is changed and the service Signal is transmitted to the receiving end through a new path, the performance of power, OSNR (Optical Signal Noise Ratio) and the like generally does not meet the requirement of the receiving end, and at this time, the Optical performance of a new Optical path is automatically controlled by matching with the automatic power control system, so that the service is recovered to be normal. The control process of the power automatic control system comprises the steps of firstly obtaining topological data of the whole system, executing a preset algorithm according to the topological data, updating a power management virtual path, and specifically, establishing a corresponding second type control unit 28 according to a new optical fiber connection path, wherein the second type control unit is used for automatically controlling the respectively managed OA gain value and the attenuation value of an adjustable attenuator according to the input and output optical powers of a new span upstream OA node and a new span downstream OA node, the OA gain value, the attenuation value of the adjustable attenuator and other information, so that the main optical power passing through meets the transmission requirement. And at the same time, receive the new configuration of the service from ASON, and update the corresponding first-type control unit 27. The control module of the first-type control unit 27 then executes a preset algorithm according to the updated central frequency, modulation code pattern, bandwidth, type of optical fiber to be transmitted, and other input parameters of the service, so as to obtain the target fiber-entering optical power of the service at each OADM node. And acquiring the actual value of the current fiber-entering optical power through a detection module, and starting an adjusting function if the actual value is inconsistent with the target fiber-entering optical power. The control module of the first-type control unit 27 adjusts each managed OADM node through the execution module, so that the actual fiber-incoming optical power of the channel at each OADM node tends to the target fiber-incoming optical power, thereby completing the function of service switching.

As shown in fig. 5, an embodiment of the present invention provides an optical network power control automatic device 50, which includes a memory 510 and a processor 520, where the memory 510 stores a program, and when the program is read and executed by the processor 520, the program implements the optical network power control automatic method according to any embodiment.

As shown in fig. 6, an embodiment of the present invention provides a computer-readable storage medium 60, where one or more programs 610 are stored, and the one or more programs 610 may be executed by one or more processors to implement the optical network power automatic control method according to any embodiment.

As shown in fig. 7, an embodiment of the present invention provides an optical network power automatic control system, which includes an optical network 701 and an optical network power automatic control device 702 according to any embodiment.

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.