Signal processing method and device, optical amplifier, storage medium and computer program product

Abstract

The invention discloses a signal processing method and device, an optical amplifier, a storage medium and a computer program product. The method comprises the steps that an optical amplifier determines at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is used for compensating power loss in the optical signal transmission process; selecting a first target wavelength from the at least one target wavelength, and obtaining a first value by using the first target wavelength and at least one second target wavelength in the at least one target wavelength, the first value represents a power loss difference value of a second optical signal of each second target wavelength in the at least one second target wavelength relative to a first optical signal of the first target wavelength, and the first value is associated with an influence degree of stimulated Raman scattering in an optical signal transmission process; and determining the output power of the at least one optical signal by using the first value.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of network transmission, and in particular to a signal processing method and device, an optical amplifier, a storage medium and a computer program product. BACKGROUND

[0002] With the development of emerging businesses such as computing power networks, cloud computing, and metaverse, the capacity demand of backbone transmission networks based on fiber communication networks is rapidly growing. Backbone transmission networks based on single-channel 100G / 200G technology have been deployed on a large scale in various regions. In order to further improve network throughput and reduce the cost of single-bit transmission, single-channel 400G and higher transmission rate technologies have received widespread attention and research. Among them, long-distance (which can be understood as a distance of more than 1500 km) signal transmission is a technical challenge that single-channel 400G technology needs to solve.

[0003] To meet the application requirements of backbone transmission networks, single-channel 400G technology needs to be based on a specific type of fiber infrastructure to support long-distance transmission. To meet the above requirements, the related art proposes using a high symbol rate of 130GBd quadrature phase shift keying (QPSK) code type to realize signal transmission in a single-channel 400G optical system.

[0004] However, in the process of transmitting optical signals through an optical amplifier in a single-channel 400G optical system, there can be a problem of large differences in the output power of multiple optical signals, which can affect the transmission performance of the single-channel 400G optical system. SUMMARY

[0005] To solve the problems in the related art, the embodiments of the present application provide a signal processing method and device, an optical amplifier, a storage medium and a computer program product.

[0006] The technical solutions of the embodiments of the present application are implemented as follows:

[0007] The embodiments of the present application provide a signal processing method applied to an optical amplifier, comprising:

[0008] determining at least one target wavelength corresponding to at least one optical signal, the optical amplifier being configured to compensate for power loss in the process of transmitting optical signals;

[0009] selecting a first target wavelength from the at least one target wavelength, and obtaining a first value by using the first target wavelength and at least one second target wavelength from the at least one target wavelength, the first value representing a power loss difference value of the second optical signal of each of the at least one second target wavelength relative to the first optical signal of the first target wavelength, the first value being associated with an influence degree of stimulated Raman scattering in an optical signal transmission process;

[0010] determining an output power of the at least one optical signal by using the first value.

[0011] In the above scheme, the first value is obtained by using the first target wavelength and at least one second target wavelength from the at least one target wavelength, and the first value represents a power loss difference value of the second optical signal of each of the at least one second target wavelength relative to the first optical signal of the first target wavelength, the first value being associated with an influence degree of stimulated Raman scattering in an optical signal transmission process.

[0012] determining a second value of the first target wavelength, the second value representing a first power loss in the first optical signal transmission process;

[0013] determining a third value of each of the at least one second target wavelength, the third value representing a second power loss in the second optical signal transmission process;

[0014] obtaining the first value by using the determined second value and third value.

[0015] In the above scheme, the second value of the first target wavelength is determined, and the second value represents a first power loss in the first optical signal transmission process.

[0016] determining a fourth value of the first target wavelength, the fourth value representing a power loss of the first optical signal under the influence of stimulated Raman scattering;

[0017] obtaining the second value by using the fourth value and a fifth value, the fifth value representing a noise figure of the optical amplifier.

[0018] In the above scheme, the third value of each of the at least one second target wavelength is determined, and the third value represents a second power loss in the second optical signal transmission process.

[0019] for each second target wavelength, determining a sixth value of the second target wavelength, the sixth value representing a power loss of the second optical signal under the influence of stimulated Raman scattering;

[0020] obtaining the third value by using the sixth value and the fifth value, the fifth value representing a noise figure of the optical amplifier.

[0021] In the above scheme, the output power of the at least one optical signal is determined by using the first value, and the output power of the at least one optical signal is determined by using the first value.

[0022] determining a seventh value of the optical amplifier, the seventh value representing a maximum output power of the optical amplifier;

[0023] determining the output power of the at least one optical signal by using the first value and the seventh value.

[0024] In the above solution, the determining the output power of the at least one optical signal by using the first value and the seventh value comprises:

[0025] determining the output power of the first optical signal by using the first value and the seventh value;

[0026] determining the output power of the at least one second optical signal by using the output power of the first optical signal and the first value.

[0027] In the above solution, the at least one target wavelength is associated with an L waveband.

[0028] and / or,

[0029] the at least one target wavelength is associated with a C waveband.

[0030] Embodiments of the present application further provide a signal processing device, which is arranged in an optical amplifier and comprises:

[0031] a first determining unit configured to determine at least one target wavelength corresponding to at least one optical signal, the optical amplifier being configured to compensate for power loss in the process of optical signal transmission;

[0032] a calculating unit configured to select a first target wavelength from the at least one target wavelength, and obtain a first value by using the first target wavelength and at least one second target wavelength in the at least one target wavelength, the first value representing a power loss difference value of a second optical signal of each second target wavelength in the at least one second target wavelength relative to a first optical signal of the first target wavelength, the first value being associated with an influence degree of stimulated Raman scattering in the process of optical signal transmission;

[0033] a second determining unit configured to determine the output power of the at least one optical signal by using the first value.

[0034] Embodiments of the present application further provide an optical amplifier, which comprises a processor and a communication interface, and wherein:

[0035] The processor is configured to determine at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is configured to compensate for power loss during optical signal transmission; select a first target wavelength from the at least one target wavelength, and obtain a first value using the first target wavelength and at least one second target wavelength among the at least one target wavelength, the first value representing the power loss difference of the second optical signal of each second target wavelength among the at least one second target wavelength relative to the first optical signal of the first target wavelength, the first value being related to the degree of influence of stimulated Raman scattering during optical signal transmission; and determine the output power of the at least one optical signal using the first value.

[0036] This application also provides an optical amplifier, including: a processor and a memory for storing a computer program capable of running on the processor.

[0037] When the processor runs the computer program, it executes the steps of any of the signal processing methods described above.

[0038] This application also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the signal processing methods described above.

[0039] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of any of the signal processing methods described above.

[0040] The signal processing method, apparatus, optical amplifier, storage medium, and computer program product provided in this application embodiment determine at least one target wavelength corresponding to at least one optical signal. The optical amplifier is used to compensate for power loss during optical signal transmission. A first target wavelength is selected from the at least one target wavelength, and a first value is obtained using the first target wavelength and at least one second target wavelength among the at least one target wavelength. The first value characterizes the power loss difference between the second optical signal at each of the at least one second target wavelength and the first optical signal at the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission. The output power of the at least one optical signal is determined using the first value. The technical solution provided in this application embodiment converts the degree of influence of stimulated Raman scattering of each optical signal into compensation for the power loss of the optical amplifier during the transmission of multiple optical signals. This allows multiple optical signals to have similar output power after being adjusted by the optical amplifier, thus ensuring the overall transmission performance of the backbone transmission network. Attached Figure Description

[0041] Figure 1This is a schematic diagram illustrating the performance of an optical amplifier in different wavelength bands in related technologies;

[0042] Figure 2 This is a schematic flowchart of a signal processing method according to an embodiment of this application;

[0043] Figure 3 This is a schematic diagram of a power transfer structure between optical signals according to an embodiment of this application;

[0044] Figure 4 This is a schematic diagram illustrating optical signal transmission in a single-channel 400G system, serving as an application example of this application.

[0045] Figure 5 This is a schematic diagram of the signal processing device structure according to an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the optical amplifier structure according to an embodiment of this application. Detailed Implementation

[0047] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0048] In scenarios employing high-symbol-rate 130GBd QPSK to implement backbone transmission networks (also known as optical backbone transmission networks), channel spacing (also known as wavebands) reaches 150GHz. This reduces the number of channels that can be accommodated in a single-channel 400G system (also known as an ultra-wideband optical transmission system) by two-thirds compared to a single-channel 100G system; each channel is used to transmit one optical signal. In this scenario, to maintain a full 80-waveband configuration, the bandwidth of a single-channel 400G system needs to be increased to three times that of a single-channel 100G system, that is, expanding from the 4THZ C4T band in a single-channel 100G system to the 12THZ C6T+L6T band.

[0049] However, due to the limitation of long-wavelength amplification efficiency in the L6T band, the performance of optical amplifiers (specifically, erbium-doped fiber amplifiers (EDFAs)) differs between the L6T and C6T bands. Specifically, for example... Figure 1 As shown, under high gain conditions, the noise figure of EDFA in the C6T band remains at about 4dB gain, while the noise figure in the L6T band exceeds 7dB. In other words, the performance (such as noise figure) of EDFA varies significantly in different bands, and this difference will limit the overall transmission performance of a single-channel 400G system.

[0050] To address these issues, relevant technologies primarily focus on optimizing the optical amplifier's design. This includes increasing the erbium fiber length of the EDFA in the L6T band, increasing the number of pump sources in the L6T band, or exploring novel co-doped materials to improve the amplification efficiency of the gain fiber, thereby improving the optical amplifier's performance (e.g., noise figure) in the L6T band. However, on the one hand, the potential for improvement in the noise figure of the EDFA in the L6T band is limited; on the other hand, optimizing the optical amplifier itself may significantly impact parameters such as size and power consumption, or increase the production cost, thus limiting the application range of the optical amplifier.

[0051] Based on this, in various embodiments of this application, combined with the signal transmission characteristics of a single-channel 400G system, an optical amplifier is designed to convert the stimulated Raman scattering (SRS) effect during optical signal transmission into compensation for insufficient performance in the L6T band, so that different optical signals have the same output power after being transmitted through the optical amplifier, thereby ensuring the overall transmission performance of the single-channel 400G system.

[0052] This application provides a signal processing method, such as... Figure 2 As shown, applied to an optical amplifier, the method includes:

[0053] Step 201: Determine one or more target wavelengths corresponding to one or more (or at least one) optical signals, wherein the optical amplifier is used to compensate for power loss during optical signal transmission;

[0054] Step 202: Select a first target wavelength from the one or more target wavelengths, and use the first target wavelength and one or more second target wavelengths from the one or more target wavelengths to obtain a first value. The first value characterizes the power loss difference of the second optical signal of each of the one or more second target wavelengths relative to the first optical signal of the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission.

[0055] Step 203: Using the first value, determine the output power of the one or more optical signals.

[0056] In practical applications, the optical amplifier may specifically include an EDFA, which can compensate for the loss of optical signal caused by stimulated Raman scattering during optical signal transmission and the loss caused by the performance of the optical amplifier itself (such as noise figure). That is, the optical amplifier can gain the power of the optical signal (which can also be understood as relay amplification), thereby compensating for the power loss of the optical signal.

[0057] In practical applications, during step 201, as the one or more optical signals are transmitted through the optical fiber, the optical amplifier can determine the target wavelength for each optical signal. The one or more target wavelengths can be associated with the L-band and / or C-band. Target wavelengths associated with the C-band can be referred to as short-wavelength wavelengths, and target wavelengths associated with the L-band can be referred to as long-wavelength wavelengths. For example, in a single-channel 400G system, the L-band can specifically include the L6T band, and the C-band can specifically include the C6T band.

[0058] Here, the number of optical amplifiers can be related to the number of wavelength bands. Specifically, when one or more target wavelengths are associated with the L-band, an optical amplifier can be set on the L-band; when one or more target wavelengths are associated with the C-band, an optical amplifier can be set on the C-band; when one or more target wavelengths are associated with both the C-band and the L-band, an optical amplifier can be set on both the C-band and the L-band.

[0059] It should be noted that when one or more target wavelengths are associated with the L-band and C-band, due to the effect of stimulated Raman scattering, the optical signal corresponding to the target wavelength associated with the C-band will draw power from the optical signal corresponding to the target wavelength associated with the L-band. In other words, under the effect of stimulated Raman scattering, there is a power transfer between the optical signal associated with the C-band and the optical signal associated with the L-band.

[0060] For example, such as Figure 3 As shown, in a single-channel 100G system, the maximum power difference (or maximum power imbalance) of the inter-channel optical signal generated by stimulated Raman scattering in the C-band (specifically the C4T band) is less than 1 dB; while in a single-channel 400G system, the maximum power difference of the inter-channel optical signal generated by stimulated Raman scattering in the C-band + L-band (specifically the C6T + L6T band) is approximately 7 dB.

[0061] Here, through Figure 3It can be observed that the power transfer generated by stimulated Raman scattering can effectively increase the band loss (also known as cross-band loss) of the optical amplifier in the C-band, while reducing the band loss in the L-band. In this case, the optical amplifier has a low noise figure and high band loss in the C-band, and a high noise figure and low band loss in the L-band. Therefore, the optical amplifier can use the sum of the band loss and noise figure in different bands as the power loss during optical signal transmission. This allows for adjustment of the output power of the optical signal through the power loss, thus achieving a flat output power for optical signals at different target wavelengths and ensuring that different optical signals have similar optical signal-to-noise ratios (OSNR). The OSNR of the optical signal can be determined using the following formula:

[0062] O = 58 + P in -NF-G-10log 10 (N) (1)

[0063] Where O represents the OSNR of the optical signal, P in is represented by the input power of the optical signal, NF is represented by the noise figure of the optical amplifier, G is represented by the band loss of the optical amplifier (which can also be understood as the gain of the optical amplifier), and N is represented by the number of bands associated with the target wavelength.

[0064] In practical applications, in step 202, the optical amplifier can determine the power loss of the optical signal corresponding to each target wavelength, and use the first target wavelength as the reference wavelength to calculate the relative difference in power loss between the reference wavelength and other wavelengths; wherein, the first target wavelength can be selected in a random manner, and this application embodiment does not limit this.

[0065] Specifically, in one embodiment, obtaining the first value using the first target wavelength and one or more second target wavelengths from the one or more target wavelengths includes:

[0066] Determine a second value for the first target wavelength, the second value representing the first power loss during the transmission of the first optical signal;

[0067] A third value is determined for each of the one or more second target wavelengths, the third value representing a second power loss during the transmission of the second optical signal;

[0068] The first value is obtained by using the determined second and third values.

[0069] The first target wavelength may be referred to as the reference wavelength or the base wavelength, and this embodiment of the application does not limit this. Furthermore, the second target wavelength can be understood as any target wavelength other than the first target wavelength among the one or more target wavelengths.

[0070] In practical applications, for the first target wavelength, the optical amplifier can calculate the band loss and noise figure corresponding to the first target wavelength respectively, thereby obtaining the second value.

[0071] Specifically, in one embodiment, determining the second value of the first target wavelength includes:

[0072] A fourth value for the first target wavelength is determined, wherein the fourth value characterizes the power loss of the first optical signal under stimulated Raman scattering.

[0073] The second value is obtained using the fourth and fifth values, wherein the fifth value characterizes the noise figure of the optical amplifier.

[0074] The fourth value can be understood as the band loss of the first optical signal under the influence of stimulated Raman scattering, and the fifth value can be understood as the noise figure of the optical amplifier in the band corresponding to the first target wavelength. The noise figure can be understood as the characteristic of the optical amplifier itself.

[0075] Here, for the first target wavelength, the optical amplifier can determine the power loss represented by the fourth value and the noise figure represented by the fifth value respectively; by summing the fourth value and the fifth value, the optical amplifier can obtain the first power loss represented by the second value.

[0076] In practical applications, for the one or more second target wavelengths, the optical amplifier can calculate the band loss and noise figure corresponding to each second target wavelength to obtain the third value.

[0077] Specifically, in one embodiment, determining a third value for each of the one or more second target wavelengths includes:

[0078] For each second target wavelength, a sixth value for the second target wavelength is determined, which characterizes the power loss of the second optical signal under stimulated Raman scattering.

[0079] The third value is obtained using the sixth and fifth values, and the fifth value characterizes the noise figure of the optical amplifier.

[0080] The sixth value can be understood as the band loss of the second optical signal under the influence of stimulated Raman scattering, and the fifth value can be understood as the noise figure of the optical amplifier in the band corresponding to the second target wavelength.

[0081] Here, for each second target wavelength, the optical amplifier can determine the power loss represented by the sixth value and the noise figure represented by the fifth value respectively; by summing the sixth value and the fifth value, the optical amplifier can obtain the second power loss represented by the third value.

[0082] In practical applications, after obtaining the second and third values, the optical amplifier can subtract the second and third values ​​to obtain the first value. For example, assuming there are Q target wavelengths (which can also be understood as Q wavelength channels), the optical amplifier selects the i-th target wavelength from the Q target wavelengths as the first target wavelength, and sequentially calculates the power loss difference (which can be expressed as Δ) between each second target wavelength and the first target wavelength.

[0083] In practical applications, the optical amplifier can determine the output power of different optical signals by combining its own output power characteristics with the first value.

[0084] Specifically, in one embodiment, determining the output power of the one or more optical signals using the first value includes:

[0085] Determine a seventh value for the optical amplifier, the seventh value representing the maximum output power of the optical amplifier;

[0086] The output power of the one or more optical signals is determined using the first value and the seventh value.

[0087] The seventh value, representing the maximum output power, can be understood as the sum of the power of the optical signals that the optical amplifier can adjust or the saturated output power.

[0088] In practical applications, when determining the output power of one or more optical signals, since the output power of each second optical signal can be understood as the sum of the output power of the first optical signal and the corresponding power loss difference, the optical amplifier can calculate the output power of different optical signals based on the relationship between the output power of the second optical signal and the first optical signal.

[0089] Specifically, in one embodiment, determining the output power of the one or more optical signals using the first value and the seventh value includes:

[0090] The output power of the first optical signal is determined using the first value and the seventh value;

[0091] The output power of the one or more second optical signals is determined using the output power of the first optical signal and the first value.

[0092] Here, by expressing the output power of each second optical signal as the sum of the output power of the first optical signal and the corresponding power loss difference, the optical amplifier can calculate the output power of the first optical signal; wherein, the output power of the first optical signal can be obtained using the following formula:

[0093]

[0094] Where P0 represents the maximum output power of the optical amplifier, i.e., the seventh value; Q represents the number of optical signals; α+Δ k Let Δ be the output power of the k-th optical signal. k It is expressed as the power loss difference between the k-th optical signal and the first optical signal.

[0095] It should be noted that when there are Q optical signals (specifically including 1 first optical signal and Q-1 second optical signals), the meaning of the above formula (2) can be understood as the sum of the output power of the first optical signal and each of the Q-1 second optical signals being equal to the maximum output power of the optical amplifier, i.e., (α+Δ1)+(α+Δ2)...+(α+Δ1)... k ) = P0; where the value of △1 is 0.

[0096] In practical applications, after obtaining the output power of the first optical signal, the optical amplifier can sum the power loss difference of each second optical signal relative to the first optical signal and the output power of the first optical signal to obtain the output power of the one or more second optical signals.

[0097] The signal processing method provided in this application embodiment involves an optical amplifier determining one or more target wavelengths corresponding to one or more optical signals. The optical amplifier is used to compensate for power loss during optical signal transmission. A first target wavelength is selected from the one or more target wavelengths, and a first value is obtained using the first target wavelength and one or more second target wavelengths among the one or more target wavelengths. The first value characterizes the power loss difference between the second optical signal at each of the one or more second target wavelengths and the first optical signal at the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission. The output power of the one or more optical signals is determined using the first value. The technical solution provided in this application embodiment converts the degree of influence of stimulated Raman scattering of each optical signal into compensation for the power loss of the optical amplifier during the transmission of multiple optical signals. This allows multiple optical signals to have similar output power after being adjusted by the optical amplifier, thus ensuring the overall transmission performance of the backbone transmission network.

[0098] The following section provides a more detailed description of this application with reference to application examples.

[0099] In the application examples of this application, an optical amplifier design scheme is proposed to address the problem of insufficient inherent noise figure performance of optical amplifiers in the L6T band of ultra-wideband optical systems. Specifically, the stimulated Raman scattering effect of transmission impairments in ultra-wideband optical systems is transformed into a favorable factor for compensating for the insufficient noise figure performance of optical amplifiers in the L6T band, thereby designing the gain and output power of the optical amplifier separately.

[0100] Here, in the process of designing the gain of the optical amplifier, it can be based on the equivalent loss of different wavelengths after stimulated Raman scattering; where the gain of different wavelengths is non-uniform, that is, the gain of different wavelengths can be different.

[0101] Furthermore, in designing the output power of the optical amplifier, the power loss corresponding to different wavelengths can be calculated separately (which can be expressed as NF+G), and the relative value between each other wavelength and the reference wavelength (i.e., the first value mentioned above) can be calculated using the i-th wavelength as the reference wavelength; whereby the output power of the k-th other wavelength can be expressed as Δ k +α. Then, based on formula (2), the output power corresponding to the reference wavelength and other wavelengths can be calculated.

[0102] Specifically, such as Figure 4As shown, taking the network link between region A and region B as an example, assuming a single-channel 400G system in the C6T+L6T band is built using a loopback configuration, the system uses a specific type of optical fiber and EDFA for repeater amplification throughout. By designing the EDFA using the above design concept, the optical signal-to-noise ratio difference between channels after transmission of optical signals of different wavelengths through this system is less than 1dB, demonstrating excellent optical signal-to-noise ratio flatness performance.

[0103] In the application example of this application, by combining the characteristics of a single-channel 400G system, the optical amplifier transforms the stimulated Raman scattering effect, which is a transmission impairment of the single-channel 400G system, into a favorable factor that compensates for the insufficient noise figure performance of the optical amplifier on the L6T band. This results in the optical signals of each channel having a relatively flat optical signal-to-noise ratio and similar transmission performance after multi-span transmission (which can be understood as power transfer between optical signals under stimulated Raman scattering). In this way, it can promote the practical application of single-channel 400G and higher speed technologies in backbone transmission networks, and help improve network throughput and reduce the cost per bit transmission.

[0104] To implement the method of the embodiments of this application, the embodiments of this application also provide a signal processing device, disposed on an optical amplifier, such as... Figure 5 As shown, the device includes:

[0105] The first determining unit 501 is used to determine at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is used to compensate for power loss during optical signal transmission.

[0106] The calculation unit 502 is configured to select a first target wavelength from the at least one target wavelength, and obtain a first value using the first target wavelength and at least one second target wavelength among the at least one target wavelength. The first value characterizes the power loss difference between the second optical signal of each second target wavelength and the first optical signal of the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission.

[0107] The second determining unit 503 is used to determine the output power of the at least one optical signal using the first value.

[0108] In one embodiment, the computing unit 502 is used for:

[0109] Determine a second value for the first target wavelength, the second value representing the first power loss during the transmission of the first optical signal;

[0110] A third value is determined for each of the at least one second target wavelengths, the third value representing a second power loss during the transmission of the second optical signal;

[0111] The first value is obtained by using the determined second and third values.

[0112] In one embodiment, the computing unit 502 is used for:

[0113] A fourth value for the first target wavelength is determined, wherein the fourth value characterizes the power loss of the first optical signal under stimulated Raman scattering.

[0114] The second value is obtained using the fourth and fifth values, wherein the fifth value characterizes the noise figure of the optical amplifier.

[0115] In one embodiment, the computing unit 502 is used for:

[0116] For each second target wavelength, a sixth value for the second target wavelength is determined, which characterizes the power loss of the second optical signal under stimulated Raman scattering.

[0117] The third value is obtained using the sixth and fifth values, and the fifth value characterizes the noise figure of the optical amplifier.

[0118] In one embodiment, the second determining unit 503 is configured to:

[0119] Determine a seventh value for the optical amplifier, the seventh value representing the maximum output power of the optical amplifier;

[0120] The output power of the at least one optical signal is determined using the first value and the seventh value.

[0121] In one embodiment, the second determining unit 503 is configured to:

[0122] The output power of the first optical signal is determined using the first value and the seventh value;

[0123] The output power of the at least one second optical signal is determined using the output power of the first optical signal and the first value.

[0124] In practical applications, the first determining unit 501 and the second determining unit 503 can be implemented by a processor in a signal processing device.

[0125] It should be noted that the signal processing device provided in the above embodiments is only illustrated by the division of the above program modules. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the signal processing device and the signal processing method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0126] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiments of this application, the embodiments of this application also provide an optical amplifier, such as... Figure 6 As shown, the optical amplifier 600 includes:

[0127] The communication interface 601 enables information exchange with other devices;

[0128] The processor 602 is connected to the communication interface 601 to enable information interaction with other devices and to execute the methods provided by one or more of the above-mentioned technical solutions when running a computer program;

[0129] The computer program is stored in memory 603.

[0130] Specifically, the processor 602 is configured to determine at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is configured to compensate for power loss during optical signal transmission; select a first target wavelength from the at least one target wavelength, and obtain a first value using the first target wavelength and at least one second target wavelength among the at least one target wavelength, the first value representing the power loss difference of the second optical signal of each second target wavelength among the at least one second target wavelength relative to the first optical signal of the first target wavelength, the first value being related to the degree of influence of stimulated Raman scattering during optical signal transmission; and determine the output power of the at least one optical signal using the first value.

[0131] In one embodiment, the processor 602 is configured to:

[0132] Determine a second value for the first target wavelength, the second value representing the first power loss during the transmission of the first optical signal;

[0133] A third value is determined for each of the at least one second target wavelengths, the third value representing a second power loss during the transmission of the second optical signal;

[0134] The first value is obtained by using the determined second and third values.

[0135] In one embodiment, the processor 602 is configured to:

[0136] A fourth value for the first target wavelength is determined, wherein the fourth value characterizes the power loss of the first optical signal under stimulated Raman scattering.

[0137] The second value is obtained using the fourth and fifth values, wherein the fifth value characterizes the noise figure of the optical amplifier.

[0138] In one embodiment, the processor 602 is configured to:

[0139] For each second target wavelength, a sixth value for the second target wavelength is determined, which characterizes the power loss of the second optical signal under stimulated Raman scattering.

[0140] Using the sixth and fifth values, a third value for the second target wavelength is obtained, and the fifth value characterizes the noise figure of the optical amplifier.

[0141] In one embodiment, the processor 602 is configured to:

[0142] Determine a seventh value for the optical amplifier, the seventh value representing the maximum output power of the optical amplifier;

[0143] The output power of the at least one optical signal is determined using the first value and the seventh value.

[0144] In one embodiment, the processor 602 is configured to:

[0145] The output power of the first optical signal is determined using the first value and the seventh value;

[0146] The output power of the at least one second optical signal is determined using the output power of the first optical signal and the first value.

[0147] It should be noted that the specific processing procedure of the processor 602 can be understood by referring to the above method.

[0148] Of course, in practical applications, the various components in the optical amplifier 600 are coupled together via a bus system 604. It can be understood that the bus system 604 is used to achieve communication between these components. In addition to a data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 6 The general designated all buses as Bus System 604.

[0149] The memory 603 in this embodiment is used to store various types of data to support the operation of the optical amplifier 600. Examples of such data include any computer program used to operate on the optical amplifier 600.

[0150] The methods disclosed in the embodiments of this application can be applied to the processor 602, or implemented by the processor 602. The processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 602 or by instructions in the form of software. The processor 602 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 602 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the memory 603. The processor 602 reads the information in the memory 603 and combines its hardware to complete the steps of the aforementioned method.

[0151] In an exemplary embodiment, the optical amplifier 600 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0152] It is understood that the memory (memory 603) in this embodiment of the application can be volatile memory or non-volatile memory, or both. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); the magnetic surface memory can be disk storage or magnetic tape storage. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0153] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a memory 603 storing a computer program, which can be executed by the processor 602 of the optical amplifier 600 to complete the steps described in the aforementioned optical amplifier-side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0154] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by the processor 602 of the optical amplifier 600 to complete the steps described in the aforementioned optical amplifier-side method.

[0155] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0156] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0157] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. A signal processing method, characterized in that, Applications in optical amplifiers include: Determine at least one target wavelength corresponding to at least one optical signal, wherein the optical amplifier is used to compensate for power loss during optical signal transmission; A first target wavelength is selected from the at least one target wavelength, and a first value is obtained using the first target wavelength and at least one second target wavelength from the at least one target wavelength. The first value characterizes the power loss difference of the second optical signal of each of the at least one second target wavelengths relative to the first optical signal of the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission. Using the first value, the output power of the at least one optical signal is determined.

2. The method according to claim 1, characterized in that, The step of obtaining a first value using the first target wavelength and at least one second target wavelength from the at least one target wavelength includes: Determine a second value for the first target wavelength, the second value representing the first power loss during the transmission of the first optical signal; A third value is determined for each of the at least one second target wavelengths, the third value representing a second power loss during the transmission of the second optical signal; The first value is obtained by using the determined second and third values.

3. The method according to claim 2, characterized in that, Determining the second value of the first target wavelength includes: A fourth value for the first target wavelength is determined, wherein the fourth value characterizes the power loss of the first optical signal under stimulated Raman scattering. The second value is obtained using the fourth and fifth values, wherein the fifth value characterizes the noise figure of the optical amplifier.

4. The method according to claim 2, characterized in that, Determining a third value for each of the at least one second target wavelengths includes: For each second target wavelength, a sixth value for the second target wavelength is determined, which characterizes the power loss of the second optical signal under stimulated Raman scattering. The third value is obtained using the sixth and fifth values, and the fifth value characterizes the noise figure of the optical amplifier.

5. The method according to claim 1, characterized in that, Determining the output power of the at least one optical signal using the first value includes: Determine a seventh value for the optical amplifier, the seventh value representing the maximum output power of the optical amplifier; The output power of the at least one optical signal is determined using the first value and the seventh value.

6. The method according to claim 5, characterized in that, Determining the output power of the at least one optical signal using the first value and the seventh value includes: The output power of the first optical signal is determined using the first value and the seventh value; The output power of at least one second optical signal is determined using the output power of the first optical signal and the first value.

7. The method according to any one of claims 1 to 6, characterized in that, The at least one target wavelength is associated with the L-band; And / or, The at least one target wavelength is associated with the C-band.

8. A signal processing apparatus, characterized in that, Applications in optical amplifiers include: The first determining unit is used to determine at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is used to compensate for power loss during optical signal transmission. A calculation unit is configured to select a first target wavelength from the at least one target wavelength, and obtain a first value using the first target wavelength and at least one second target wavelength among the at least one target wavelength. The first value characterizes the power loss difference of the second optical signal of each of the at least one second target wavelengths relative to the first optical signal of the first target wavelength. The first value is related to the degree of influence of stimulated Raman scattering during optical signal transmission. The second determining unit is used to determine the output power of the at least one optical signal using the first value.

9. An optical amplifier, characterized in that, include: Processor and communication interface; among which, The processor is configured to determine at least one target wavelength corresponding to at least one optical signal, and the optical amplifier is configured to compensate for power loss during optical signal transmission; select a first target wavelength from the at least one target wavelength, and obtain a first value using the first target wavelength and at least one second target wavelength among the at least one target wavelength, the first value representing the power loss difference of the second optical signal of each second target wavelength among the at least one second target wavelength relative to the first optical signal of the first target wavelength, the first value being related to the degree of influence of stimulated Raman scattering during optical signal transmission; and determine the output power of the at least one optical signal using the first value.

10. An optical amplifier, characterized in that, include: The processor and the memory used to store computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 7.

11. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 7.

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