Output optical power determination method and device, storage medium and program product

Abstract

The invention provides an output optical power determination method and device, a storage medium and a program product, relates to the technical field of communication, and solves the technical problem of relatively high BER of an optical signal in a WDM system transmission process in related technologies. The method comprises the following steps: determining a first linear relationship between the output optical power of a target optical amplification section and an error rate BER; the first linear relation is used for representing the corresponding relation between the output optical power size of the target optical amplifier section and the BER size; determining a second linear relationship between an optical signal to noise ratio (OSNR) and a BER in the target optical amplifier section based on the output optical power of the target optical amplifier section and the first linear relationship; the second linear relation is used for representing the corresponding relation between the BER size and the OSNR size; and based on the first linear relation and the second linear relation, determining target output optical power meeting a first preset condition. The present disclosure is used for wavelength division multiplexing scenarios.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method, device, storage medium and program product for determining output optical power. Background Art

[0002] At present, in the wavelength division multiplexing (WDM) system, after the combiner / demultiplexer at the source end receives the optical signal, the optical signals of different frequencies emitted by different optical forwarding units are combined through the wavelength selective switch (WSS) and coupled into the optical cable. The optical signal is amplified by the optical amplifier (OA) to prevent the optical power from attenuating. After multi-stage transmission and amplification, it is received by the optical forwarding unit. When the optical signal attenuation is too large, it is necessary to increase the optical power of the optical signal to adjust the optical signal-to-noise ratio (OSNR) in the WDM system.

[0003] However, when increasing the optical power of optical signals to adjust the OSNR in WDM systems, due to stimulated Raman scattering in optical fibers, if the optical power is adjusted too high, the bit error rate (BER) of optical signals during transmission in the WDM system may be high. Summary of the invention

[0004] The present disclosure provides a method, device, storage medium and program product for determining output optical power, which solve the technical problem of high BER of optical signals during transmission in a WDM system in the related art.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0006] In a first aspect, a method for determining an output optical power is provided, the method comprising: determining a first linear relationship between an output optical power of a target optical amplifier segment and a bit error rate (BER); the first linear relationship is used to characterize a corresponding relationship between the output optical power of the target optical amplifier segment and the BER; the target optical amplifier segment is any optical amplifier segment in a wavelength division multiplexing (WDM) device; based on the output optical power of the target optical amplifier segment and the first linear relationship, determining a second linear relationship between an optical signal-to-noise ratio (OSNR) and the BER in the target optical amplifier segment; the OSNR is determined based on the output optical power; the second linear relationship is used to characterize a corresponding relationship between the BER and the OSNR; based on the first linear relationship and the second linear relationship, determining a target output optical power that meets a first preset condition; the first preset condition comprises: a first BER of the target optical amplifier segment is less than a first preset threshold, and / or an OSNR of the target optical amplifier segment is greater than a second preset threshold.

[0007] In combination with the above-mentioned first aspect, in a possible implementation manner, the method specifically includes: obtaining the gain slope of the optical amplifier OA of the target optical amplifier section and the noise coefficient of the target optical amplifier section; determining the OSNR of the target optical amplifier section at the output optical power based on the output optical power of the target optical amplifier section, the gain slope of the optical amplifier OA of the target optical amplifier section, the noise coefficient of the target optical amplifier section, and a preset OSNR formula; based on the OSNR of the target optical amplifier section at the output optical power and the first linear relationship, determining the second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier section.

[0008] In combination with the above-mentioned first aspect, in a possible implementation method, the method also includes: when it is determined that the first BER of the target optical amplifier segment is greater than a third preset threshold, sending first indication information to the WDM device; the first indication information is used to instruct the WDM device to adjust the output optical power to the target output optical power.

[0009] In combination with the above-mentioned first aspect, in a possible implementation, the method further includes: obtaining a second BER of each channel among multiple channels; adjusting the output optical power of the target channel based on the second BER of each channel and a second linear relationship; the target channel is a channel among the multiple channels whose second BER is greater than a third preset threshold.

[0010] In combination with the above-mentioned first aspect, in a possible implementation method, the method specifically includes: sending second indication information to the WDM device; the second indication information is used to instruct the WDM device to adjust the output optical power of the target optical amplifier segment to multiple test optical powers; obtaining multiple test BERs of the target optical amplifier segment under multiple test optical powers; and determining a first linear relationship between the output optical power and the BER of the target optical amplifier segment based on the correspondence between the multiple test optical powers and the multiple test BERs.

[0011] In combination with the above-mentioned first aspect, in a possible implementation method, the method specifically includes: determining a first value range of the output optical power when the BER is less than a first preset threshold based on a first linear relationship; determining a second value range of the output optical power when the OSNR is greater than a second preset threshold based on a second linear relationship; and determining the output optical power of the intersection of the first value range and the second value range as the target output optical power.

[0012] In combination with the first aspect, in a possible implementation manner, the OSNR satisfies the following formula:

[0013] OSNR(λ)=58+P(λ)-L(λ)-NF(λ)-10*lgN

[0014] Wherein, P(λ) is the output optical power of the target optical amplifier section; L(λ) is the gain slope of the optical amplifier OA of the target optical amplifier section; NF(λ) is the noise factor of the target optical amplifier section.

[0015] In a second aspect, an output optical power determination device is provided, the device comprising: a processing unit; the processing unit is used to determine a first linear relationship between the output optical power of a target optical amplifier segment and a bit error rate BER; the first linear relationship is used to characterize the corresponding relationship between the output optical power size and the BER size of the target optical amplifier segment; the target optical amplifier segment is any optical amplifier segment in a wavelength division multiplexing (WDM) device; the processing unit is used to determine a second linear relationship between an optical signal-to-noise ratio (OSNR) and the BER in the target optical amplifier segment based on the output optical power of the target optical amplifier segment and the first linear relationship; the OSNR is determined based on the output optical power; the second linear relationship is used to characterize the corresponding relationship between the BER size and the OSNR size; the processing unit is used to determine a target output optical power that meets a first preset condition based on the first linear relationship and the second linear relationship; the first preset condition comprises: the first BER of the target optical amplifier segment is less than a first preset threshold value, and / or the OSNR of the target optical amplifier segment is greater than a second preset threshold value.

[0016] In combination with the above-mentioned second aspect, in a possible implementation method, the device also includes: a communication unit; a processing unit, specifically used to: instruct the communication unit to obtain the gain slope of the optical amplifier OA of the target optical amplifier section and the noise coefficient of the target optical amplifier section; determine the OSNR of the target optical amplifier section at the output optical power based on the output optical power of the target optical amplifier section, the gain slope of the optical amplifier OA of the target optical amplifier section, the noise coefficient of the target optical amplifier section, and a preset OSNR formula; determine the second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier section based on the OSNR of the target optical amplifier section at the output optical power and the first linear relationship.

[0017] In combination with the above-mentioned second aspect, in a possible implementation method, the processing unit is also used to: when it is determined that the first BER of the target optical amplifier segment is greater than a third preset threshold, send first indication information to the WDM device; the first indication information is used to instruct the WDM device to adjust the output optical power to the target output optical power.

[0018] In combination with the above-mentioned second aspect, in a possible implementation method, the processing unit is also used to: instruct the communication unit to obtain the second BER of each channel among the multiple channels; adjust the output optical power of the target channel based on the second BER of each channel and the second linear relationship; the target channel is a channel among the multiple channels whose second BER is greater than a third preset threshold.

[0019] In combination with the above-mentioned second aspect, in a possible implementation method, the processing unit is specifically used to: instruct the communication unit to send second indication information to the WDM device; the second indication information is used to instruct the WDM device to adjust the output optical power of the target optical amplifier segment to multiple test optical powers; instruct the communication unit to obtain multiple test BERs of the target optical amplifier segment under multiple test optical powers; and determine a first linear relationship between the output optical power and the BER of the target optical amplifier segment based on the correspondence between the multiple test optical powers and the multiple test BERs.

[0020] In combination with the above-mentioned second aspect, in a possible implementation method, the processing unit is specifically used to: determine a first value range of the output optical power when the BER is less than a first preset threshold based on a first linear relationship; determine a second value range of the output optical power when the OSNR is greater than a second preset threshold based on a second linear relationship; determine the output optical power of the intersection of the first value range and the second value range as the target output optical power.

[0021] In combination with the second aspect, in a possible implementation manner, the OSNR satisfies the following formula:

[0022] OSNR(λ)=58+P(λ)-L(λ)-NF(λ)-10*lgN

[0023] Wherein, P(λ) is the output optical power of the target optical amplifier section; L(λ) is the gain slope of the optical amplifier OA of the target optical amplifier section; NF(λ) is the noise factor of the target optical amplifier section.

[0024] In a third aspect, an output optical power determination device is provided, comprising: a processor and a memory; wherein the memory is used to store computer execution instructions, and when the output optical power determination device is running, the processor executes the computer execution instructions stored in the memory, so that the output optical power determination device performs the output optical power determination method as described in the above-mentioned first aspect and any possible implementation method thereof.

[0025] In a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored. When the instructions in the computer-readable storage medium are executed by a processor of an output optical power determination device, the output optical power determination device performs the output optical power determination method as described in the first aspect and any possible implementation method thereof.

[0026] In a fifth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run a computer program or instructions to implement the method for determining the output optical power as described in the first aspect and any possible implementation thereof.

[0027] In the present disclosure, the name of the above-mentioned output optical power determination device does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of the present disclosure, they belong to the scope of the present disclosure and its equivalent technologies.

[0028] The technical solution provided by the present disclosure brings at least the following beneficial effects: the output optical power determination device in the present disclosure first determines a first linear relationship in the target optical amplifier segment for characterizing the corresponding relationship between the output optical power size and the BER size of the target optical amplifier segment; then determines a second linear relationship for characterizing the corresponding relationship between the BER size and the OSNR size in the target optical amplifier segment based on the output optical power of the target optical amplifier segment and the first linear relationship; finally determines a target output optical power that meets the first preset condition based on the first linear relationship and the second linear relationship; that is, the present disclosure uses optical power as a medium, and determines the corresponding relationship between the BER size and the OSNR size based on the corresponding relationship between the optical power size and the BER size, and the corresponding relationship between the optical power size and the OSNR size; and then determines a target output optical power that can meet both the OSNR requirement and the BER requirement, thereby avoiding excessive optical power adjustment when improving the optical power of the optical signal in the OSNR in the WDM system, resulting in a higher BER of the optical signal during transmission in the WDM system, thereby solving the technical problem of a higher BER of the optical signal during transmission in the WDM system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0030] Figure 1 A schematic diagram of the structure of a wavelength division multiplexing system provided in an embodiment of the present disclosure;

[0031] Figure 2 A schematic diagram of an optical fiber loss spectrum of a wavelength division multiplexing system provided in an embodiment of the present disclosure;

[0032] Figure 3 A schematic diagram of energy transfer in a wavelength division multiplexing system provided in an embodiment of the present disclosure;

[0033] Figure 4 A schematic diagram of the structure of a system for determining output optical power provided by an embodiment of the present disclosure;

[0034] Figure 5 A schematic diagram of the hardware structure of a device for determining output optical power provided in an embodiment of the present disclosure;

[0035] Figure 6 A schematic diagram of a flow chart of a method for determining output optical power provided in an embodiment of the present disclosure;

[0036] Figure 7 A schematic diagram of a linear relationship curve between the output optical power and the bit error rate BER of an optical signal in a G.652.D system provided by an embodiment of the present disclosure;

[0037] Figure 8 A schematic diagram of a linear relationship curve between the output optical power and the bit error rate BER of an optical signal in a G.654.E system provided by an embodiment of the present disclosure;

[0038] Fig. 9 A schematic diagram of a flow chart of another method for determining output optical power provided in an embodiment of the present disclosure;

[0039] Fig.10 A schematic diagram of a flow chart of another method for determining output optical power provided in an embodiment of the present disclosure;

[0040] Fig.11 A schematic diagram of a flow chart of another method for determining output optical power provided in an embodiment of the present disclosure;

[0041] Fig.12 A schematic diagram of a flow chart of another method for determining output optical power provided in an embodiment of the present disclosure;

[0042] Fig.13 A schematic diagram of a structure of a filling wave for filling unused channels in a wavelength division multiplexing system provided by an embodiment of the present disclosure;

[0043] Fig.14 A schematic diagram of a flow chart of another method for determining output optical power provided in an embodiment of the present disclosure;

[0044] Fig.15 A schematic diagram of a structure for adjusting a target output power by adjusting a gain slope of an OA provided in an embodiment of the present disclosure;

[0045] Fig.16 A schematic diagram of the structure of an output optical power determination device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] The following is a detailed description of an output optical power determination method, device, storage medium and program product provided by an embodiment of the present disclosure in conjunction with the accompanying drawings.

[0047] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0048] The terms “first”, “second” and the like in the specification and drawings of the present disclosure are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0049] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of the present disclosure are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units that are not listed, or optionally includes other steps or units that are inherent to these processes, methods, products or devices. It should be noted that in the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0050] In the description of the present disclosure, unless otherwise specified, “plurality” means two or more.

[0051] The terms involved in the embodiments of the present disclosure are explained below to facilitate the reader's understanding.

[0052] 1. Wavelength Division Multiplexing

[0053] Wavelength division multiplexing is an optical communication transmission technology. For example, the system structure of a wavelength division multiplexing system is as follows: Figure 1 As shown, it can simultaneously transmit multiple optical signals of different wavelengths in the same optical fiber, thereby significantly improving the transmission capacity and efficiency of the optical fiber. The following is a detailed explanation of wavelength division multiplexing: Wavelength division multiplexing technology refers to the technology of combining two or more optical carrier signals of different wavelengths through a multiplexer at the transmitting end, and coupling them to the same optical fiber of the optical line for transmission. At the receiving end, the optical carriers of various wavelengths are separated by a demultiplexer, and then further processed by the optical receiver to restore the original signal. Wavelength division multiplexing technology is based on the dispersion phenomenon of light, that is, when light of different wavelengths propagates in an optical fiber, due to different refractive indices, they will be separated and produce different transmission paths. By using light sources with different wavelengths to emit optical signals, and merging multiple signals together through a multiplexer, and then separating the signals through a demultiplexer, the simultaneous transmission of multi-channel data is achieved. When optical signals are transmitted in a wavelength division multiplexing system, optical fiber loss will occur. The optical fiber loss spectrum is shown as follows. Figure 2 shown.

[0054] 2. Stimulated Raman Scattering (SRS)

[0055] SRS is a nonlinear optical effect that can cause energy transfer in WDM systems. Figure 3 As shown, it occurs when high-intensity lasers interact strongly with material molecules, making the scattering process have the properties of stimulated emission. In a WDM system, when the optical power is too large, stimulated Raman scattering may occur, resulting in a higher BER of the optical signal during transmission in the WDM system.

[0056] At present, in the wavelength division multiplexing system, after the combiner / demultiplexer at the source end receives the optical signal, the optical signals of different frequencies emitted by different optical forwarding units are gathered together through the wavelength selection switch and coupled into the optical cable. The optical signal is amplified by the optical amplifier to prevent the optical power from attenuating. After multi-stage transmission and amplification, it is received by the optical forwarding unit. When the optical signal attenuation is too large, it is necessary to increase the optical power of the optical signal to adjust the optical signal-to-noise ratio in the WDM system.

[0057] However, when increasing the optical power of an optical signal to adjust the OSNR in a WDM system, due to stimulated Raman scattering in the optical fiber, if the optical power is adjusted too high, the BER of the optical signal during transmission in the WDM system may be high.

[0058] In order to solve the above technical problems, the present disclosure provides a method, device, storage medium and program product for determining output optical power, which are used to solve the technical problem that due to the stimulated Raman scattering phenomenon in the optical fiber, if the optical power is adjusted too high, it may cause a high BER of the optical signal during transmission in the WDM system. The method comprises: an output optical power determination device first determines a first linear relationship for characterizing the corresponding relationship between the output optical power size and the BER size of the target optical amplifier segment; then, based on the output optical power of the target optical amplifier segment and the first linear relationship, a second linear relationship for characterizing the corresponding relationship between the BER size and the OSNR size in the target optical amplifier segment is determined; finally, based on the first linear relationship and the second linear relationship, a target output optical power that meets a first preset condition is determined; that is, the present disclosure uses optical power as a medium, and based on the corresponding relationship between the optical power size and the BER size, and the corresponding relationship between the optical power size and the OSNR size, determines the corresponding relationship between the BER size and the OSNR size; and then determines a target output optical power that can simultaneously meet the OSNR requirement and the BER requirement, thereby avoiding excessive optical power adjustment when improving the optical power of the optical signal to adjust the OSNR in the WDM system, resulting in a high BER of the optical signal during the transmission of the WDM system, thereby solving the technical problem of a high BER of the optical signal during the transmission of the WDM system.

[0059] In a possible implementation, the above-mentioned output optical power determination method can be applied to the output optical power determination system 400. Figure 4An output optical power determination system 400 provided in an embodiment of the present application is described in detail. Figure 4 As shown, Figure 4 An output optical power determination system 400 provided in an embodiment of the present disclosure includes: a WDM device 401 and an output optical power determination apparatus 402 .

[0060] The WDM device 401 is used to combine two or more optical carrier signals of different wavelengths at the transmitting end through a multiplexer, and couple them to the same optical fiber of the optical line for transmission; provide the output optical power, BER and optical signal-to-noise ratio data in the optical signal transmission process to the output optical power determination device 402; the output optical power determination device 402 is used to determine the first linear relationship between the output optical power of the target optical amplifier section and the bit error rate BER; the first linear relationship is used to characterize the corresponding relationship between the output optical power size and the BER size of the target optical amplifier section; the target optical amplifier section is any optical amplifier section in the wavelength division multiplexing WDM device; based on the output optical power of the target optical amplifier section and the first linear relationship, a second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier section is determined; the OSNR is determined based on the output optical power; the second linear relationship is used to characterize the corresponding relationship between the BER size and the OSNR size; based on the first linear relationship and the second linear relationship, a target output optical power that meets a first preset condition is determined; the first preset condition includes: the first BER of the target optical amplifier section is less than a first preset threshold, and / or, the OSNR of the target optical amplifier section is greater than a second preset threshold.

[0061] Optionally, the physical device of the WDM device and the output optical power determination apparatus may be a terminal, a server, or other types of devices, which is not limited in the embodiments of the present application.

[0062] Optionally, when one of the WDM device and the output optical power determination device is a terminal and the other is a server, the terminal and the server are communicatively connected.

[0063] In actual applications, a terminal can be connected to multiple servers, and a server can be connected to multiple terminals. For ease of understanding, this application is described by taking one terminal connected to one server as an example.

[0064] Optionally, the terminal may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a radio access network (RAN). A wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, or a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network, such as a mobile phone, tablet computer, laptop computer, netbook, personal digital assistant (PDA).

[0065] Optionally, the server can be a server in a server cluster (consisting of multiple servers), or a chip in the server, or a system on a chip in the server, or can be implemented by a virtual machine (VM) deployed on a physical machine, which is not limited in the embodiments of the present application.

[0066] In a possible implementation, the hardware structure of the output optical power determination device includes: Figure 5 The components of the output optical power determination device 500 shown in FIG. Figure 5 The output optical power determination device 500 shown in the figure is used as an example to introduce the hardware structure of the output optical power determination device. Figure 5 As shown, the output optical power determination device 500 includes at least one processor 501, a communication line 502, and at least one communication interface 504, and may also include a memory 503. The processor 501, the memory 503 and the communication interface 504 may be connected via the communication line 502.

[0067] Processor 501 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present disclosure, such as: one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA).

[0068] The communication link 502 may include a pathway for transmitting information between the above-mentioned components.

[0069] The communication interface 504 is used to communicate with other devices or communication networks, and can use any transceiver-like device, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0070] The memory 503 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to include or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0071] In one possible design, the memory 503 can exist independently of the processor 501, that is, the memory 503 can be a memory outside the processor 501. In this case, the memory 503 can be connected to the processor 501 through the communication line 502, and is used to store execution instructions or application code, and is controlled by the processor 501 to implement the output optical power determination method provided in the following embodiment of the present disclosure. In another possible design, the memory 503 can also be integrated with the processor 501, that is, the memory 503 can be the internal memory of the processor 501, for example, the memory 503 is a high-speed cache, which can be used to temporarily store some data and instruction information.

[0072] As an implementation method, the processor 501 may include one or more CPUs, for example Figure 5 As another achievable method, the output optical power determination device 500 may include multiple processors, such as Figure 5 As another implementation, the output optical power determination apparatus 500 may further include an output device 505 and an input device 506.

[0073] In the following, a method for determining output optical power provided by an embodiment of the present disclosure is described in detail.

[0074] like Figure 6 As shown, Figure 6 A method for determining output optical power provided in an embodiment of the present disclosure can be applied to Figure 5 In the output optical power determination device shown, the method includes the following S601-S603, which are described in detail below.

[0075] S601. An output optical power determination device determines a first linear relationship between an output optical power of a target optical amplifier section and a bit error rate BER.

[0076] The first linear relationship is used to characterize the corresponding relationship between the output optical power of the target optical amplifier section and the BER.

[0077] In a possible implementation, the WDM system includes multiple optical amplifier sections, and the target optical amplifier section is any optical amplifier section in a wavelength division multiplexing WDM device.

[0078] In a possible implementation, under different optical fiber standards, the linear relationship between the output optical power and the bit error rate is different; for example, Figure 7 As shown, Figure 7 This is the linear relationship curve between the output optical power and the bit error rate BER of the optical signal in the G.652.D system. Figure 8 This is the linear relationship curve between the output optical power and the bit error rate BER of the optical signal in the G.654.E system.

[0079] S602: The output optical power determining device determines a second linear relationship between an optical signal-to-noise ratio (OSNR) and a BER in the target optical amplification section based on the output optical power of the target optical amplification section and the first linear relationship.

[0080] The second linear relationship is used to characterize the corresponding relationship between the BER size and the OSNR size.

[0081] In a possible implementation manner, the output optical power determining device determines the OSNR of the target optical amplification section based on the output optical power of the target optical amplification section.

[0082] S603: The output optical power determining device determines a target output optical power that meets a first preset condition based on the first linear relationship and the second linear relationship.

[0083] In a possible implementation manner, the first preset condition includes: a first BER of the target optical amplifier section is less than a first preset threshold, and / or an OSNR of the target optical amplifier section is greater than a second preset threshold.

[0084] In a possible implementation, the output optical power determining device determines the minimum BER of the target optical amplification section as a first preset threshold, and determines the OSNR at the minimum BER of the target optical amplification section as a second preset threshold.

[0085] It can be understood that, in the case where the wavelength division multiplexing system focuses on ensuring the OSNR of the target optical amplifier section, the output optical power determination device prioritizes ensuring that the OSNR meets the requirements and then determines the minimum value that the BER of the target optical amplifier section can take; in the case where the wavelength division multiplexing system focuses on ensuring the BER of the target optical amplifier section, the output optical power determination device prioritizes ensuring that the BER meets the requirements and then determines the maximum value that the BER of the target optical amplifier section can take.

[0086] The technical solution provided by the above-mentioned embodiment can at least bring the following beneficial effects: the output optical power determination device first determines a first linear relationship in the target optical amplifier segment for characterizing the corresponding relationship between the output optical power size and the BER size of the target optical amplifier segment; then, based on the output optical power of the target optical amplifier segment and the first linear relationship, determines a second linear relationship for characterizing the corresponding relationship between the BER size and the OSNR size in the target optical amplifier segment; finally, based on the first linear relationship and the second linear relationship, determines the target output optical power that meets the first preset condition; that is, the present disclosure uses optical power as a medium, and based on the corresponding relationship between the optical power size and the BER size, and the corresponding relationship between the optical power size and the OSNR size, determines the corresponding relationship between the BER size and the OSNR size; and then determines the target output optical power that can meet both the OSNR requirement and the BER requirement, thereby avoiding excessive optical power adjustment when improving the optical power of the optical signal to adjust the OSNR in the WDM system, resulting in a higher BER of the optical signal during the transmission of the WDM system, thereby solving the technical problem of a higher BER of the optical signal during the transmission of the WDM system.

[0087] In one possible implementation, combining Figure 6 ,like Fig. 9 As shown, the above S602, the process of the output optical power determination device determining the second linear relationship between the optical signal-to-noise ratio OSNR and BER in the target optical amplifier segment based on the output optical power of the target optical amplifier segment and the first linear relationship, can be specifically implemented through the following S901-S903, which is described in detail below.

[0088] S901. The output optical power determination device obtains the gain slope of the optical amplifier OA of the target optical amplifier section and the noise coefficient of the target optical amplifier section.

[0089] In a possible implementation, the output optical power determination device determines the receiving end OA and the output end OA of the target optical amplifier section in the WDM device, determines the gain slope based on the receiving end OA, and determines the noise coefficient of the target optical amplifier section based on the output end OA.

[0090] S902. The output optical power determining device determines the OSNR of the target optical amplifier section at the output optical power based on the output optical power of the target optical amplifier section, the gain slope of the optical amplifier OA of the target optical amplifier section, the noise coefficient of the target optical amplifier section, and a preset OSNR formula.

[0091] In a possible implementation, the OSNR of the target optical amplifier section satisfies the following formula 1:

[0092] OSNR(λ)=58+P(λ)-L(λ)-NF(λ)-10*lgN Formula 1

[0093] Wherein, P(λ) is the output optical power of the target optical amplifier section; L(λ) is the gain slope of the optical amplifier OA of the target optical amplifier section; NF(λ) is the noise factor of the target optical amplifier section.

[0094] S903: The output optical power determining device determines a second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplification section based on the OSNR of the target optical amplification section at the output optical power and the first linear relationship.

[0095] In a possible implementation, in a possible implementation, the output optical power determination device determines the OSNR of the target optical amplifier segment at the output optical power based on the output optical power of the target optical amplifier segment, the gain slope of the optical amplifier OA of the target optical amplifier segment, the noise coefficient of the target optical amplifier segment, and a preset OSNR formula, that is, the relationship between the output optical power and the OSNR is determined, and according to the corresponding relationship between the output optical power of the target optical amplifier segment and the BER size, the second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier segment is further determined.

[0096] The technical solution provided by the above embodiment can at least bring the following beneficial effects: the output optical power determination device first determines the relationship between the output optical power and the OSNR based on the output optical power of the target optical amplifier segment, the gain slope of the optical amplifier OA of the target optical amplifier segment, the noise coefficient of the target optical amplifier segment, and the preset OSNR formula, and then determines the second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier segment based on the first linear relationship, that is, the corresponding relationship between the output optical power of the target optical amplifier segment and the BER, so that the output optical power determination device determines the target output optical power that meets the first preset condition based on the second linear relationship.

[0097] In one possible implementation, combining Fig. 9 ,like Fig.10As shown, in the above S603, after the output optical power determination device determines the target output optical power that meets the first preset condition based on the first linear relationship and the second linear relationship, the output optical power determination device also needs to adjust the output optical power. This process can be specifically implemented through the following S1001, which is described in detail below.

[0098] S1001. When determining that a first BER of a target optical amplifier section is greater than a third preset threshold, the output optical power determination device sends first indication information to a WDM device.

[0099] In a possible implementation manner, the first indication information is used to instruct the WDM device to adjust the output optical power to the target output optical power.

[0100] In a possible implementation, when determining that the first BER of the target optical amplifier section cannot meet the BER requirement of the WDM system, the output optical power determination device instructs the WDM device to adjust the output optical power to the target output optical power, thereby reducing the BER of the WDM system.

[0101] The technical solution provided by the above embodiment can at least bring the following beneficial effects: when the output optical power determination device determines that the first BER of the target optical amplifier segment cannot meet the BER requirement of the WDM system, it instructs the WDM device to adjust the output optical power to the target output optical power, thereby reducing the BER of the WDM system, thereby solving the technical problem of high BER of the optical signal during transmission in the WDM system.

[0102] In a possible implementation, the target optical amplifier section includes multiple channels, such as Fig.11 As shown, the output optical power determination device also needs to adjust the output optical power of the channel in the target optical amplification section. This process can be specifically determined by the following S1101-S1102, which is described in detail below.

[0103] S1101. An output optical power determination apparatus obtains a second BER of each of a plurality of channels.

[0104] In a possible implementation, the target optical amplifier section includes a plurality of channels, and the output optical power determination device obtains the second BER of each channel through the OA.

[0105] S1102: The output optical power determining device adjusts the output optical power of the target channel based on the second BER of each channel and the second linear relationship.

[0106] In a possible implementation manner, the target channel is a channel among the multiple channels whose second BER is greater than a third preset threshold.

[0107] In a possible implementation, the output optical power determination device determines the BER of each channel in the target optical amplifier section, determines the target channel whose BER cannot meet the requirements of the WDM system, and adjusts the output optical power of the target channel based on the second linear relationship.

[0108] The technical solution provided by the above embodiment can at least bring the following beneficial effects: the output optical power determination device obtains the BER of each channel in the target optical amplifier section, and determines the target channel that does not meet the BER requirement of the WDM system, and adjusts the output optical power of the target channel based on the second linear relationship so that the output optical power of each channel in the target optical amplifier section meets the requirement of the WDM system, thereby solving the technical problem of high BER of optical signals during transmission in the WDM system.

[0109] In one possible implementation, combining Fig.10 like Fig.12 As shown, the above S601, the process of the output optical power determination device determining the first linear relationship between the output optical power of the target optical amplifier section and the bit error rate BER, can be specifically implemented through the following S1201-S1203, which is described in detail below.

[0110] S1201. The output optical power determination apparatus sends second indication information to a WDM device.

[0111] The second indication information is used to instruct the WDM device to adjust the output optical power of the target optical amplifier section to multiple test optical powers.

[0112] In a possible implementation, a fill wave consistent with the spectrum of the optical signal may be generated through WSS filtering.

[0113] For example, Fig.13 As shown, Fig.13 A structural schematic diagram of a filling wave for filling unused channels in a wavelength division multiplexing system provided in an embodiment of the present invention is provided. By filling the unused channels in the target optical amplifier segment with the filling wave, the WDM system is kept in a full-wave state, thereby avoiding affecting the performance of the WDM system when expanding the capacity of the WDM system.

[0114] S1202: The output optical power determination device obtains multiple test BERs of the target optical amplifier section under multiple test optical powers.

[0115] In a possible implementation manner, the output optical power determination device obtains the BER under different test optical powers from a gateway system of the WDM device.

[0116] S1203: The output optical power determining device determines a first linear relationship between the output optical power and the BER of the target optical amplifier section based on a correspondence relationship between a plurality of test optical powers and a plurality of test BERs.

[0117] In a possible implementation, the output optical power determining device determines a first linear relationship curve between the output optical power and the BER of the target optical amplifier section based on a correspondence between a plurality of test optical powers and a plurality of test BERs.

[0118] The technical solution provided by the above embodiment can at least bring about the following beneficial effects: the output optical power determination device obtains the BER under different test optical powers from the gateway system of the WDM device, and determines the first linear relationship between the output optical power and the BER of the target optical amplifier section based on the correspondence between multiple test optical powers and multiple test BERs, so that the output optical power determination device determines the target output optical power that meets the first preset condition based on the first linear relationship and the second linear relationship.

[0119] In one possible implementation, combining Fig.12 like Fig.14 As shown, the above S603, the process in which the output optical power determination device determines the target output optical power that meets the first preset condition based on the first linear relationship and the second linear relationship, can be specifically implemented through the following S1401-S1403, which is described in detail below.

[0120] S1401. An output optical power determining device determines, based on a first linear relationship, a first value range of the output optical power when the BER is less than a first preset threshold.

[0121] In a possible implementation manner, the output optical power determining device determines the output optical power corresponding to a BER that is less than a first preset threshold, that is, a first value range of the output optical power.

[0122] It can be understood that the first preset threshold is the maximum value of the BER that meets the requirements of the WDM system.

[0123] S1402: The output optical power determining device determines, based on a second linear relationship, a second value range of the output optical power when the OSNR is greater than a second preset threshold.

[0124] In a possible implementation, the output optical power determining device determines the output optical power corresponding to the OSNR greater than the second preset threshold, that is, the second value range of the output optical power

[0125] It can be understood that the second preset threshold is the minimum value of OSNR that meets the requirements of the WDM system.

[0126] S1403: The output optical power determining device determines the output optical power of the intersection of the first value range and the second value range as the target output optical power.

[0127] In a possible implementation, the output optical power determination device determines the output optical power of the intersection of the first value range and the second value range, that is, determines the optical power that satisfies both the OSNR requirement and the BER requirement of the WDM system as the target output optical power.

[0128] In one possible implementation, Fig.15 As shown, Fig.15 A structural diagram of adjusting the target output power by adjusting the gain slope of the OA provided in an embodiment of the present disclosure. After determining the target output power, the output optical power determination device can adjust the target output power by adjusting the gain slope of the OA.

[0129] The technical solution provided by the above-mentioned embodiment can at least bring about the following beneficial effects: the output optical power determination device determines the target output optical power that meets the first preset condition based on the first linear relationship and the second linear relationship; that is, with optical power as the medium, based on the correspondence between the optical power size and the BER size, and the correspondence between the optical power size and the OSNR size, the correspondence between the BER size and the OSNR size is determined; and then the target output optical power that can simultaneously meet the OSNR requirements and the BER requirements is determined.

[0130] It can be seen that the above mainly introduces the technical solution provided by the embodiment of the present disclosure from the perspective of the method. In order to achieve the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the modules and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0131] The embodiment of the present disclosure can divide the output optical power determination device into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. Optionally, the division of modules in the embodiment of the present disclosure is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0132] In one possible implementation, Fig.16 , Fig.16 A schematic diagram of the structure of an output optical power determination device 1600 provided in the present disclosure.

[0133] The output optical power determination device 1600 includes: a processing unit 1602; the processing unit 1602 is used to determine a first linear relationship between the output optical power of a target optical amplifier section and a bit error rate BER; the first linear relationship is used to characterize the corresponding relationship between the output optical power size and the BER size of the target optical amplifier section; the target optical amplifier section is any optical amplifier section in a wavelength division multiplexing WDM device; the processing unit 1602 is used to determine a second linear relationship between an optical signal-to-noise ratio OSNR and the BER in the target optical amplifier section based on the output optical power of the target optical amplifier section and the first linear relationship; the OSNR is determined based on the output optical power; the second linear relationship is used to characterize the corresponding relationship between the BER size and the OSNR size; the processing unit 1602 is used to determine a target output optical power that meets a first preset condition based on the first linear relationship and the second linear relationship; the first preset condition includes: the first BER of the target optical amplifier section is less than a first preset threshold value, and / or, the OSNR of the target optical amplifier section is greater than a second preset threshold value.

[0134] In a possible implementation, the device also includes: a communication unit 1601; a processing unit 1602, which is specifically used to: instruct the communication unit 1601 to obtain the gain slope of the optical amplifier OA of the target optical amplifier section and the noise coefficient of the target optical amplifier section; determine the OSNR of the target optical amplifier section at the output optical power based on the output optical power of the target optical amplifier section, the gain slope of the optical amplifier OA of the target optical amplifier section, the noise coefficient of the target optical amplifier section, and a preset OSNR formula; determine the second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplifier section based on the OSNR of the target optical amplifier section at the output optical power and the first linear relationship.

[0135] In a possible implementation, the processing unit 1602 is further used to: when it is determined that the first BER of the target optical amplifier segment is greater than a third preset threshold, send first indication information to the WDM device; the first indication information is used to instruct the WDM device to adjust the output optical power to the target output optical power.

[0136] In a possible implementation, the processing unit 1602 is further used to: instruct the communication unit 1601 to obtain the second BER of each channel among the multiple channels; adjust the output optical power of the target channel based on the second BER of each channel and the second linear relationship; the target channel is a channel among the multiple channels whose second BER is greater than a third preset threshold.

[0137] In a possible implementation, the processing unit 1602 is specifically used to: instruct the communication unit 1601 to send second indication information to the WDM device; the second indication information is used to instruct the WDM device to adjust the output optical power of the target optical amplifier segment to multiple test optical powers; instruct the communication unit 1601 to obtain multiple test BERs of the target optical amplifier segment under multiple test optical powers; and determine a first linear relationship between the output optical power of the target optical amplifier segment and the BER based on the correspondence between the multiple test optical powers and the multiple test BERs.

[0138] In one possible implementation, the processing unit 1602 is specifically used to: determine a first value range of the output optical power when the BER is less than a first preset threshold based on a first linear relationship; determine a second value range of the output optical power when the OSNR is greater than a second preset threshold based on a second linear relationship; and determine the output optical power of the intersection of the first value range and the second value range as the target output optical power.

[0139] In a possible implementation, the OSNR satisfies the following formula:

[0140] OSNR(λ)=58+P(λ)-L(λ)-NF(λ)-10*lgN

[0141] Wherein, P(λ) is the output optical power of the target optical amplifier section; L(λ) is the gain slope of the optical amplifier OA of the target optical amplifier section; NF(λ) is the noise factor of the target optical amplifier section.

[0142] The embodiment of the present disclosure also provides an output optical power determination device, which includes a processor and a memory; wherein the memory is used to store computer execution instructions, and when the output optical power determination device is running, the processor executes the computer execution instructions stored in the memory, so that the output optical power determination device executes the output optical power determination method recorded in the embodiment of the present disclosure.

[0143] An embodiment of the present disclosure provides a computer program product including instructions. When the instructions are executed on a computer, the computer is enabled to execute the output optical power determination method in the above method embodiment.

[0144] An embodiment of the present disclosure provides a chip, which includes a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run a computer program or instruction to implement the output optical power determination method in the above method embodiment.

[0145] Among them, the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable computer disk, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), registers, hard disks, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any other form of computer-readable storage medium in a suitable combination of the above, or numerical values ​​in the art. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present disclosure, computer-readable storage media may be any tangible media that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0146] Since the apparatus, device, computer-readable storage medium, and computer program product in the embodiments of the present disclosure can be applied to the above-mentioned method, the technical effects that can be obtained can also refer to the above-mentioned method embodiments, and the embodiments of the present disclosure will not be repeated here.

[0147] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A method for determining output optical power, characterized in that: include: Determine a first linear relationship between the output optical power of a target optical amplifier section and a bit error rate BER; the first linear relationship is used to characterize the corresponding relationship between the output optical power of the target optical amplifier section and the BER; the target optical amplifier section is any optical amplifier section in a wavelength division multiplexing WDM device; Determine a second linear relationship between an optical signal-to-noise ratio (OSNR) and a BER in the target optical amplifier section based on the output optical power of the target optical amplifier section and the first linear relationship; the OSNR is determined based on the output optical power; and the second linear relationship is used to characterize the corresponding relationship between the BER and the OSNR; Determine a target output optical power that satisfies a first preset condition based on the first linear relationship and the second linear relationship; The first preset condition includes: a first BER of the target optical amplifier section is less than a first preset threshold, and / or an OSNR of the target optical amplifier section is greater than a second preset threshold.

2. The method according to claim 1, characterized in that The determining, based on the output optical power of the target optical amplifier section and the first linear relationship, a second linear relationship between an optical signal-to-noise ratio (OSNR) and a BER in the target optical amplifier section comprises: Acquire the gain slope of the optical amplifier OA of the target optical amplifier section and the noise coefficient of the target optical amplifier section; Determine the OSNR of the target optical amplifier section at the output optical power based on the output optical power of the target optical amplifier section, the gain slope of the optical amplifier OA of the target optical amplifier section, the noise coefficient of the target optical amplifier section, and a preset OSNR formula; Based on the OSNR of the target optical amplification section at the output optical power and the first linear relationship, a second linear relationship between the optical signal-to-noise ratio OSNR and the BER in the target optical amplification section is determined.

3. The method according to claim 2, characterized in that The method further comprises: When it is determined that the first BER of the target optical amplifier section is greater than a third preset threshold, first indication information is sent to the WDM device; the first indication information is used to instruct the WDM device to adjust the output optical power to the target output optical power.

4. The method according to claim 3, characterized in that: The target optical amplification section includes a plurality of channels, and the method further includes: Obtaining a second BER for each of the plurality of channels; The output optical power of a target channel is adjusted based on the second BER of each channel and the second linear relationship; the target channel is a channel among the multiple channels whose second BER is greater than a third preset threshold.

5. The method according to claim 4, characterized in that The determining of a first linear relationship between the output optical power of the target optical amplifier section and the bit error rate BER comprises: Sending second instruction information to the WDM device; the second instruction information is used to instruct the WDM device to adjust the output optical power of the target optical amplifier section to multiple test optical powers; Acquire multiple test BERs of the target optical amplifier section under the multiple test optical powers; A first linear relationship between the output optical power and the BER of the target optical amplifier section is determined based on the corresponding relationship between the multiple test optical powers and the multiple test BERs.

6. The method according to claim 5, characterized in that The determining, based on the first linear relationship and the second linear relationship, a target output optical power that satisfies a first preset condition comprises: Determine, based on the first linear relationship, a first value range of the output optical power when the BER is less than the first preset threshold; Determine, based on the second linear relationship, a second value range of the output optical power when the OSNR is greater than the second preset threshold; Determine the output optical power of the intersection of the first value range and the second value range as the target output optical power.

7. The method according to any one of claims 2 to 6, characterized in that: The OSNR satisfies the following formula: OSNR(λ)=58+P(λ)-L(λ)-NF(λ)-10*lgN Wherein, P(λ) is the output optical power of the target optical amplifier section; L(λ) is the gain slope of the optical amplifier OA of the target optical amplifier section; NF(λ) is the noise factor of the target optical amplifier section.

8. A device for determining output optical power, characterized in that: include: Processing unit; The processing unit is used to determine a first linear relationship between the output optical power of the target optical amplifier section and the bit error rate BER; the first linear relationship is used to characterize the corresponding relationship between the output optical power of the target optical amplifier section and the BER; the target optical amplifier section is any optical amplifier section in a wavelength division multiplexing WDM device; The processing unit is used to determine a second linear relationship between an optical signal-to-noise ratio (OSNR) and a BER in the target optical amplifier section based on the output optical power of the target optical amplifier section and the first linear relationship; the OSNR is determined based on the output optical power; and the second linear relationship is used to characterize the corresponding relationship between the BER and the OSNR; The processing unit is used to determine a target output optical power that meets a first preset condition based on the first linear relationship and the second linear relationship; The first preset condition includes: a first BER of the target optical amplifier section is less than a first preset threshold, and / or an OSNR of the target optical amplifier section is greater than a second preset threshold.

9. A device for determining output optical power, characterized in that: include: A processor and a memory; wherein the memory is used to store computer-executable instructions, and when the output optical power determination device is running, the processor executes the computer-executable instructions stored in the memory to enable the output optical power determination device to perform the output optical power determination method described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions. When the instructions in the computer-readable storage medium are executed by a processor for determining the output optical power, the output optical power determination device executes the output optical power determination method according to any one of claims 1 to 7.

11. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a computing device, the computing device is caused to perform the output optical power determination method according to any one of claims 1 to 7.

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