An optical communication method, device and system based on high-volume single-wave transmission

Abstract

The application discloses an optical communication method, device and system based on high-capacity single-wave transmission, which synchronously collects optical layer and electrical layer parameters through a coherent optical module and a built-in sensing unit at both ends of an optical link to form a multi-dimensional link operation data set; after preprocessing the data set, multi-node parameters are extracted to generate optical communication performance sequences and electrical performance sequences; linear regression is used for performance prediction and performance screening curve generation; multi-time period bit error rate and signal-to-noise ratio data are extracted to evaluate transmission stability and generate a stable state change curve; after aligning the two types of curve sequences, sliding window correlation analysis is performed to comprehensively evaluate optical module transmission efficiency and stable state level. The application realizes the correlation matching of optical layer and electrical layer abnormalities, can scientifically evaluate the performance attenuation and stability under high-capacity single-wave transmission, supports optical module parameter directional optimization, and effectively improves optical module transmission quality and quality screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of optical communication transmission, and more specifically, to an optical communication method, device, and system based on high-volume single-wavelength transmission. Background Technology

[0002] With the rapid development of 5G, cloud computing, and big data services, the bandwidth demand for backbone optical transmission networks and data center interconnection continues to rise. Single-wavelength transmission rates are rapidly evolving from 100G to 400G and even 800G, and high-volume single-wavelength transmission has become the core development direction in the field of optical communication. In high-volume single-wavelength transmission scenarios, optical modules face the dual challenges of optical layer transmission impairment and electrical layer interface degradation. Optical layer problems such as decreased optical signal-to-noise ratio, aggravated nonlinear effects, and optical power drift are intertwined with electrical layer problems such as differential voltage anomalies, jitter accumulation, and return loss degradation, all of which affect transmission quality and system stability.

[0003] Currently, most methods for testing and evaluating the performance of optical modules in the industry adopt a layered and independent testing mode, with optical layer parameter testing and electrical layer parameter testing and analysis carried out separately. The test data lacks a unified time benchmark, making it difficult to capture the correlation and abnormal states between optical layer performance and electrical layer performance. This results in low efficiency in screening optical module performance, difficulty in locating anomalies, and an inability to meet the high-precision, multi-dimensional performance evaluation requirements in high-volume single-wavelength transmission scenarios. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes an optical communication method, device and system based on high-volume single-wavelength transmission.

[0005] The first aspect of this invention provides an optical communication method based on high-volume single-wavelength transmission, comprising: S1. In one transmission cycle, according to the preset high-volume single-wavelength transmission scheme, target optical modules are deployed at both ends of the optical link, and data transmission tests are performed on the target optical modules. Through the coherent optical module and the built-in sensing and monitoring unit, optical layer transmission parameters and electrical layer interface parameters are collected synchronously to form a multi-dimensional link operation dataset. S2. Preprocess the multi-dimensional link operation dataset, extract and evaluate the optical layer transmission parameters and electrical layer interface parameters from multiple nodes, and serialize the extracted parameters to obtain the optical communication performance sequence and electrical performance sequence. S3. Perform sequence prediction on optical communication performance sequence and electrical performance sequence through linear regression, characterize the degradation of optical communication and electrical performance based on the prediction results, and generate performance degradation curves. S4. Extract real-time bit error rate and signal-to-noise ratio data for multiple time periods from the multi-dimensional link operation dataset, perform steady-state evaluation of optical communication transmission based on the data extracted from multiple time periods, and generate a steady-state change curve based on the steady-state change of transmission. S5. Perform sequence truncation and alignment between the performance screening curve and the transmission steady-state change curve. Use a preset step size to truncate a preset length of sequence data to perform correlation analysis between performance screening and transmission steady-state. Evaluate the efficiency and steady-state level of the optical communication transmission of the target optical module based on the correlation analysis results.

[0006] In this solution, S1 specifically refers to: Within a transmission cycle, multiple time points are divided to perform data transmission tests on the target optical module; At each time point, multi-dimensional optical layer transmission parameters and electrical layer interface parameters are collected through the coherent optical module and the built-in sensing and monitoring unit to form a multi-dimensional link operation dataset; In the multi-dimensional link operation dataset, optical layer transmission parameters include the optical signal-to-noise ratio (OSNR) of a single-wavelength channel, the output optical power of the transmitter, the input optical power of the receiver, the operating wavelength frequency, the real-time bit error rate, and the nonlinear effect coefficient. The electrical layer interface parameters include the differential peak-to-peak voltage, return loss, deterministic jitter, random jitter, and bit rate deviation of the serial differential interface. Dividing the time into multiple time nodes specifically involves setting N equally spaced time nodes within the transmission cycle, and extracting a set of optical layer transmission parameters and a set of electrical layer interface parameters for each time node. Dense sampling nodes are added at the beginning, middle and end of the transmission cycle, with the sampling density being three times that of the middle stage during the first 10% of the initial stage and the last 10% of the final stage.

[0007] In this solution, S1 further includes: The preset high-volume single-wavelength transmission scheme includes single-wavelength rate configuration, modulation format configuration, channel spacing configuration, and transmission distance configuration; The single-wavelength rate configuration supports switching between four rate levels: 100G, 200G, 400G, and 800G. The modulation format configuration includes multiple high-order modulation formats such as QPSK, 8QAM, 16QAM, and 64QAM. The channel spacing configuration supports three grid spacings: 50GHz, 75GHz, and 100GHz. The transmission distance configuration covers four typical transmission spans: 80km, 120km, 200km, and 400km. Before data transmission testing, a high-volume single-wavelength transmission scheme of the corresponding level is matched according to the nominal specifications of the target optical module and the application scenario to complete the initialization of optical link parameters and the clock synchronization calibration of the transceiver end.

[0008] In this solution, S2 specifically refers to: First, outlier removal was performed on the original multi-dimensional link operation dataset. The 3σ criterion was used to identify and remove outlier sampling points that exceeded three times the standard deviation. Missing data was filled in using linear interpolation. The differences between each core parameter of the optical layer and its corresponding standard value are calculated as multi-dimensional sequence values. The optical communication performance sequence is obtained by weighted fusion analysis of the multi-dimensional sequence values ​​to obtain the optical communication performance index value. The optical communication performance index values ​​at multiple time points are serialized to obtain the optical communication performance sequence; The electrical performance sequence is obtained by comparing and weighting the differences between the core parameters of the electrical layer and the standard parameters.

[0009] In this solution, S3 specifically refers to: Using time nodes as independent variables and optical communication performance index values ​​as dependent variables, a univariate linear regression model is constructed: P1(t) = a1×t + b1, where P1(t) is the predicted optical communication performance value, a1 is the optical performance attenuation slope, and b1 is the initial intercept of optical performance. The least squares method is used to solve the model parameters to minimize the sum of squared residuals between the actual and predicted values. A linear regression model for the electrical performance sequence is constructed: P2(t) = a2×t + b2, where P2(t) is the predicted electrical performance value, a2 is the electrical performance attenuation slope, and b2 is the initial intercept of the electrical performance; the attenuation direction and attenuation rate of optical communication and electrical performance are characterized by the sign and absolute value of the attenuation slope, respectively. The performance degradation curve includes the optical communication performance degradation curve and the electrical performance degradation curve. The optical communication performance degradation curve is obtained by jointly fitting M1 continuous predicted values ​​obtained by linear regression with the last M2 measured data points in the optical communication performance sequence. The fitting method is to use cubic spline interpolation to smoothly connect the M2 discrete measured points with the predicted line segments to form a continuous degradation curve that can characterize the entire transmission cycle and extend to the subsequent prediction period, which is marked as the optical communication performance degradation curve. Based on the continuous predicted values ​​of the electrical performance sequence, an electrical performance degradation curve is generated by combining measured data.

[0010] In this solution, S4 specifically refers to: The entire transmission cycle is divided into K consecutive time periods. The arithmetic mean of the real-time bit error rate sample value and the optical signal-to-noise ratio sample value in each time period is taken to obtain the time period bit error rate and time period signal-to-noise ratio. At the same time, the standard deviation of the bit error rate and the standard deviation of the signal-to-noise ratio in each time period are calculated to characterize the degree of parameter fluctuation in that time period. The steady-state level of optical communication transmission is obtained by weighted analysis of bit error rate and signal-to-noise ratio over multiple time periods. The steady-state evaluation formula is as follows: ; in, Let j be the steady-state value of transmission in the j-th time period. Let be the average bit error rate for the j-th time period. The acceptable threshold for bit error rate. Let j be the average optical signal-to-noise ratio during the j-th time period. This is the acceptable threshold for optical signal-to-noise ratio. Let be the standard deviation of the bit error rate in the j-th time period. denoted as the standard deviation of the optical signal-to-noise ratio in the j-th time period; u1, u2, u3, and u4 are weighting coefficients; based on the steady-state values ​​of each time period, a transmission steady-state change curve is obtained, with the vertical axis representing the steady-state value and the horizontal axis representing time.

[0011] In this solution, S5 specifically refers to: The performance screening reduction curve and the steady-state transport change curve are truncated at the end of the curve. Data points were extracted at consistent intervals, and data were obtained based on... The first and second sequences of data points; The data points of the first and second sequences are standardized, and the grey relational analysis method is introduced to evaluate the correlation between the first and second sequences and obtain the correlation degree. Based on the correlation degree characterizing the correlation strength between performance sieving and transmission steady state, the efficiency and steady-state level of optical communication transmission of the target optical module are evaluated.

[0012] A second aspect of the present invention also provides an optical communication device based on high-volume single-wavelength transmission, comprising: a processor; and a memory, wherein computer program instructions are stored in the memory, and the computer program instructions, when executed by the processor, cause the processor to perform steps S1-S5 as described above.

[0013] A third aspect of the present invention also provides an optical communication system based on high-volume single-wavelength transmission (HVSP). The system includes a memory, a processor, and a communication terminal. The memory includes an optical communication program based on HVSP. When executed by the processor, the HVSP-based optical communication program performs the following steps: S1. In one transmission cycle, according to the preset high-volume single-wavelength transmission scheme, target optical modules are deployed at both ends of the optical link, and data transmission tests are performed on the target optical modules. Through the coherent optical module and the built-in sensing and monitoring unit, optical layer transmission parameters and electrical layer interface parameters are collected synchronously to form a multi-dimensional link operation dataset. S2. Preprocess the multi-dimensional link operation dataset, extract and evaluate the optical layer transmission parameters and electrical layer interface parameters from multiple nodes, and serialize the extracted parameters to obtain the optical communication performance sequence and electrical performance sequence. S3. Perform sequence prediction on optical communication performance sequence and electrical performance sequence through linear regression, characterize the degradation of optical communication and electrical performance based on the prediction results, and generate performance degradation curves. S4. Extract real-time bit error rate and signal-to-noise ratio data for multiple time periods from the multi-dimensional link operation dataset, perform steady-state evaluation of optical communication transmission based on the data extracted from multiple time periods, and generate a steady-state change curve based on the steady-state change of transmission. S5. Perform sequence truncation and alignment between the performance screening curve and the transmission steady-state change curve. Use a preset step size to truncate a preset length of sequence data to perform correlation analysis between performance screening and transmission steady-state. Evaluate the efficiency and steady-state level of the optical communication transmission of the target optical module based on the correlation analysis results.

[0014] A fourth aspect of the present invention also provides a computer-readable storage medium comprising an optical communication program based on high-volume single-wavelength transmission (HVSP), wherein when the HVSP-based optical communication program is executed by a processor, it implements the steps of the HVSP-based optical communication method as described in any of the preceding claims.

[0015] This invention discloses an optical communication method, device, and system based on high-volume single-wavelength transmission. It synchronously collects optical and electrical layer parameters through coherent optical modules and built-in sensing units at both ends of the optical link, forming a multi-dimensional link operation dataset. After preprocessing the dataset, multi-node parameters are extracted to generate optical communication performance sequences and electrical performance sequences. Linear regression is used for performance prediction and to generate performance screening curves. Multi-time period bit error rate and signal-to-noise ratio data are extracted to evaluate the transmission steady state and generate steady-state change curves. The two types of curve sequences are aligned and correlated using a sliding window to comprehensively evaluate the transmission efficiency and steady-state level of the optical module. This invention achieves correlation matching between optical and electrical layer anomalies, enabling scientific evaluation of performance degradation and stability under high-volume single-wavelength transmission, supporting targeted optimization of optical module parameters, and effectively improving the transmission quality and quality screening efficiency of the optical module. Attached Figure Description

[0016] Figure 1 A flowchart of an optical communication method based on high-volume single-wavelength transmission according to the present invention is shown; Figure 2 The flowchart of the performance sequence analysis of the present invention is shown; Figure 3 A block diagram of an optical communication system based on high-volume single-wavelength transmission according to the present invention is shown. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0019] Figure 1 A flowchart of an optical communication method based on high-volume single-wavelength transmission according to the present invention is shown.

[0020] like Figure 1 As shown, the first aspect of the present invention provides an optical communication method based on high-volume single-wavelength transmission, comprising: S1. In one transmission cycle, according to the preset high-volume single-wavelength transmission scheme, target optical modules are deployed at both ends of the optical link, and data transmission tests are performed on the target optical modules. Through the coherent optical module and the built-in sensing and monitoring unit, optical layer transmission parameters and electrical layer interface parameters are collected synchronously to form a multi-dimensional link operation dataset. S2. Preprocess the multi-dimensional link operation dataset, extract and evaluate the optical layer transmission parameters and electrical layer interface parameters from multiple nodes, and serialize the extracted parameters to obtain the optical communication performance sequence and electrical performance sequence. S3. Perform sequence prediction on optical communication performance sequence and electrical performance sequence through linear regression, characterize the degradation of optical communication and electrical performance based on the prediction results, and generate performance degradation curves. S4. Extract real-time bit error rate and signal-to-noise ratio data for multiple time periods from the multi-dimensional link operation dataset, perform steady-state evaluation of optical communication transmission based on the data extracted from multiple time periods, and generate a steady-state change curve based on the steady-state change of transmission. S5. Perform sequence truncation and alignment between the performance screening curve and the transmission steady-state change curve. Use a preset step size to truncate a preset length of sequence data to perform correlation analysis between performance screening and transmission steady-state. Evaluate the efficiency and steady-state level of the optical communication transmission of the target optical module based on the correlation analysis results.

[0021] It is worth mentioning that the target optical module can be a coherent optical module of model 800G CFP2-DCO or other optical modules with high-capacity single-wavelength transmission communication. The coherent optical module consists of three functional components: a transmitting module, a receiving module, and a control module. All control interface pins are provided by an internal microcontroller, which can also be used for modulator control, software management, and alarm / performance event reporting. Transmission parameters are acquired through built-in sensors and the optical module's parameter acquisition function for optical communication status analysis and testing evaluation.

[0022] According to an embodiment of the present invention, S1 specifically includes: Within a transmission cycle, multiple time points are divided to perform data transmission tests on the target optical module; At each time point, multi-dimensional optical layer transmission parameters and electrical layer interface parameters are collected through the coherent optical module and the built-in sensing and monitoring unit to form a multi-dimensional link operation dataset; In the multi-dimensional link operation dataset, optical layer transmission parameters include the optical signal-to-noise ratio (OSNR) of a single-wavelength channel, the output optical power of the transmitter, the input optical power of the receiver, the operating wavelength frequency, the real-time bit error rate, and the nonlinear effect coefficient. The electrical layer interface parameters include the differential peak-to-peak voltage, return loss, deterministic jitter, random jitter, and bit rate deviation of the serial differential interface. Dividing the time into multiple time nodes specifically involves setting N equally spaced time nodes within the transmission cycle, and extracting a set of optical layer transmission parameters and a set of electrical layer interface parameters for each time node. Dense sampling nodes are added at the beginning, middle and end of the transmission cycle, with the sampling density being three times that of the middle stage during the first 10% of the initial stage and the last 10% of the final stage.

[0023] Here, dense sampling nodes are added to capture the performance mutation characteristics after transmission starts and long-term operation.

[0024] According to an embodiment of the present invention, step S1 further includes: The preset high-volume single-wavelength transmission scheme includes single-wavelength rate configuration, modulation format configuration, channel spacing configuration, and transmission distance configuration; The single-wavelength rate configuration supports switching between four rate levels: 100G, 200G, 400G, and 800G. The modulation format configuration includes multiple high-order modulation formats such as QPSK, 8QAM, 16QAM, and 64QAM. The channel spacing configuration supports three grid spacings: 50GHz, 75GHz, and 100GHz. The transmission distance configuration covers four typical transmission spans: 80km, 120km, 200km, and 400km. Before data transmission testing, a high-volume single-wavelength transmission scheme of the corresponding level is matched according to the nominal specifications of the target optical module and the application scenario to complete the initialization of optical link parameters and the clock synchronization calibration of the transceiver end.

[0025] Figure 2 A flowchart of the performance sequence analysis of the present invention is shown.

[0026] According to an embodiment of the present invention, step S2 specifically includes: First, outlier removal was performed on the original multi-dimensional link operation dataset. The 3σ criterion was used to identify and remove outlier sampling points that exceeded three times the standard deviation. Missing data was filled in using linear interpolation. The differences between each core parameter of the optical layer and its corresponding standard value are calculated as multi-dimensional sequence values. The optical communication performance sequence is obtained by weighted fusion analysis of the multi-dimensional sequence values ​​to obtain the optical communication performance index value. The optical communication performance index values ​​at multiple time points are serialized to obtain the optical communication performance sequence; The electrical performance sequence is obtained by comparing and weighting the differences between the core parameters of the electrical layer and the standard parameters.

[0027] Specifically, N takes the value of an integer between 10 and 100. Dense sampling nodes are added to capture performance mutations during transmission startup and long-term operation. The core parameters of the optical layer are user-preset parameters, such as optical signal-to-noise ratio (OSNR), transmitter output optical power, receiver input optical power, operating wavelength frequency, and real-time bit error rate. Five corresponding weight values ​​are assigned for weighted fusion to obtain the performance sequence value. The analysis process for the core parameters of the electrical layer is consistent with that of the optical layer, resulting in optical communication performance sequences and electrical performance sequences of consistent length.

[0028] According to an embodiment of the present invention, step S3 specifically includes: Using time nodes as independent variables and optical communication performance index values ​​as dependent variables, a univariate linear regression model is constructed: P1(t) = a1×t + b1, where P1(t) is the predicted optical communication performance value, a1 is the optical performance attenuation slope, and b1 is the initial intercept of optical performance. The least squares method is used to solve the model parameters to minimize the sum of squared residuals between the actual and predicted values. A linear regression model for the electrical performance sequence is constructed: P2(t) = a2×t + b2, where P2(t) is the predicted electrical performance value, a2 is the electrical performance attenuation slope, and b2 is the initial intercept of the electrical performance; the attenuation direction and attenuation rate of optical communication and electrical performance are characterized by the sign and absolute value of the attenuation slope, respectively. The performance degradation curve includes the optical communication performance degradation curve and the electrical performance degradation curve. The optical communication performance degradation curve is obtained by jointly fitting M1 continuous predicted values ​​obtained by linear regression with the last M2 measured data points in the optical communication performance sequence. The fitting method is to use cubic spline interpolation to smoothly connect the M2 discrete measured points with the predicted line segments to form a continuous degradation curve that can characterize the entire transmission cycle and extend to the subsequent prediction period, which is marked as the optical communication performance degradation curve. Based on the continuous predicted values ​​of the electrical performance sequence, an electrical performance degradation curve is generated by combining measured data.

[0029] It should be noted that M is the preset step size. The performance degradation curve is used to visually present the performance trend over time and to screen out performance ranges below the acceptable standard using a preset performance threshold. The electrical performance degradation curve is generated using the same fitting method as the optical communication performance curve.

[0030] According to an embodiment of the present invention, step S4 specifically includes: The entire transmission cycle is divided into K consecutive time periods. The arithmetic mean of the real-time bit error rate sample value and the optical signal-to-noise ratio sample value in each time period is taken to obtain the time period bit error rate and time period signal-to-noise ratio. At the same time, the standard deviation of the bit error rate and the standard deviation of the signal-to-noise ratio in each time period are calculated to characterize the degree of parameter fluctuation in that time period. The steady-state level of optical communication transmission is obtained by weighted analysis of bit error rate and signal-to-noise ratio over multiple time periods. The steady-state evaluation formula is as follows: ; in, Let j be the steady-state value of transmission in the j-th time period. Let be the average bit error rate for the j-th time period. The acceptable threshold for bit error rate. Let j be the average optical signal-to-noise ratio during the j-th time period. This is the acceptable threshold for optical signal-to-noise ratio. Let be the standard deviation of the bit error rate in the j-th time period. denoted as the standard deviation of the optical signal-to-noise ratio in the j-th time period; u1, u2, u3, and u4 are weighting coefficients; based on the steady-state values ​​of each time period, a transmission steady-state change curve is obtained, with the vertical axis representing the steady-state value and the horizontal axis representing time.

[0031] It should be noted that the duration of each continuous time period can be set to 5 to 30 minutes, and each continuous time period includes multiple time nodes.

[0032] According to an embodiment of the present invention, S5 specifically includes: The performance screening reduction curve and the steady-state transport change curve are truncated at the end of the curve. Data points were extracted at consistent intervals, and data were obtained based on... The first and second sequences of data points; The data points of the first and second sequences are standardized, and the grey relational analysis method is introduced to evaluate the correlation between the first and second sequences and obtain the correlation degree. Based on the correlation degree characterizing the correlation strength between performance sieving and transmission steady state, the efficiency and steady-state level of optical communication transmission of the target optical module are evaluated.

[0033] It should be noted that the first and second sequences correspond to the performance screening curve and the steady-state transport curve, respectively. The data point interval can be freely adjusted, and sequences of appropriate length can be extracted. K represents a preset quantity. The performance screening here includes a two-dimensional performance degradation matching analysis: analysis of optical communication performance degradation and electrical performance degradation.

[0034] The optical communication analysis method of this invention can effectively match the abnormal correlation between the optical layer transmission and the electrical layer of an optical module, and based on this, evaluate the continuous steady-state level of the optical module. It can effectively screen out optical modules with abnormal transmission characteristics and optical communication modules with excellent performance. Furthermore, it can conduct correlation analysis between performance reduction and transmission steady state of different optical communication transmission schemes, and scientifically, efficiently and quickly evaluate the performance degradation and transmission stability of optical modules in different high-volume transmission processes. It can also further optimize the transmission parameters or hardware parameters of the optical module in a targeted manner to improve the transmission quality of the optical module in specific high-volume transmission scenarios.

[0035] According to embodiments of the present invention, the evaluation results are used to directionally optimize the transmission parameters or hardware parameters of the optical module, including: When optical communication performance degradation is dominant and highly correlated, the optical layer transmit power, dispersion compensation parameters and electrical layer equalizer coefficient and driving voltage are simultaneously optimized. When optical communication performance degradation is dominant and the correlation is low, optimize the modulation format and nonlinear compensation algorithm or related optical layer parameters separately. When electrical performance degradation is dominant and the correlation is low, optimize the clock data recovery circuit and interface impedance matching electrical layer parameters separately. When electrical performance degradation is dominant and highly correlated, the differential peak-to-peak voltage of the serial differential interface is calibrated by step-wise upward adjustment. After each adjustment, the deterministic jitter and random jitter increments are monitored in real time until the differential voltage is in the range of +5% to +10% of the nominal value and the total jitter increment is less than 10%.

[0036] After completing a single round of adjustment, the performance degradation rate and correlation status are retested, and iterative optimization is performed until the optical communication performance and electrical performance degradation rates drop to the qualified range and the correlation falls back to the weak correlation range.

[0037] Here, in the stepped up calibration, the up adjustment step size can be set to 30mV to 50mV. For cases where electrical performance attenuation is dominant and highly correlated, the coefficients of the receiver's continuous-time linear equalizer and decision feedback equalizer can be iteratively updated. The least mean square algorithm is used to adaptively adjust the equalizer tap coefficients to suppress inter-symbol interference and high-frequency channel attenuation. Simultaneously, the loop bandwidth of the clock data recovery circuit is reduced by 10% to 20% to filter out high-frequency power supply noise and reduce random jitter. On the optical layer side, the output optical power of the transmitter is simultaneously reduced by 0.5dB to 1dB to suppress the propagation of nonlinear laser distortion caused by high drive voltage. The electrical impairment pre-compensation module of the digital signal processing unit is also enabled to perform high-frequency pre-emphasis processing on the electrical signal at the transmitter, offsetting the propagation effect of electrical layer attenuation on optical modulation quality.

[0038] This invention, through layered or collaborative optimization, can effectively improve the transmission quality and steady-state maintenance capability of optical modules in specific high-volume transmission scenarios.

[0039] A second aspect of the present invention also provides an optical communication device based on high-volume single-wavelength transmission, comprising: a processor; and a memory, wherein computer program instructions are stored in the memory, and the computer program instructions, when executed by the processor, cause the processor to perform steps S1-S5 as described above.

[0040] Figure 3 A block diagram of an optical communication system based on high-volume single-wavelength transmission according to the present invention is shown.

[0041] A third aspect of the present invention also provides an optical communication system based on high-volume single-wavelength transmission, the system comprising: a memory 101, a processor 103, and a communication interaction terminal 102, wherein the memory 101 includes an optical communication program based on high-volume single-wavelength transmission, and the optical communication program based on high-volume single-wavelength transmission is executed by the processor 103 to implement the steps S1-S5 described above.

[0042] When the system is running, it can perform one or more steps of the optical communication method based on high-volume single-wavelength transmission as described above.

[0043] A fourth aspect of the present invention also provides a computer-readable storage medium comprising an optical communication program based on high-volume single-wavelength transmission (HVSP), wherein when the HVSP-based optical communication program is executed by a processor, it implements the steps of the HVSP-based optical communication method as described in any of the preceding claims.

[0044] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0045] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0046] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0047] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0048] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical communication method based on high-volume single-wavelength transmission, characterized in that, include: S1. In one transmission cycle, according to the preset high-volume single-wavelength transmission scheme, target optical modules are deployed at both ends of the optical link, and data transmission tests are performed on the target optical modules. Through the coherent optical module and the built-in sensing and monitoring unit, optical layer transmission parameters and electrical layer interface parameters are collected synchronously to form a multi-dimensional link operation dataset. S2. Preprocess the multi-dimensional link operation dataset, extract and evaluate the optical layer transmission parameters and electrical layer interface parameters from multiple nodes, and serialize the extracted parameters to obtain the optical communication performance sequence and electrical performance sequence. S3. Perform sequence prediction on optical communication performance sequence and electrical performance sequence through linear regression, characterize the degradation of optical communication and electrical performance based on the prediction results, and generate performance degradation curves; S4. Extract real-time bit error rate and signal-to-noise ratio data for multiple time periods from the multi-dimensional link operation dataset, perform steady-state evaluation of optical communication transmission based on the data extracted from multiple time periods, and generate a steady-state change curve based on the steady-state change of transmission. S5. Truncate and align the performance degradation curve with the transmission steady-state change curve, and perform correlation analysis between performance degradation and transmission steady state by truncating a sequence of data of a preset length with a preset step size. Evaluate the efficiency and steady-state level of the optical communication transmission of the target optical module based on the correlation analysis results. Specifically, S4 is: The entire transmission cycle is divided into K consecutive time periods. The arithmetic mean of the real-time bit error rate sample value and the optical signal-to-noise ratio sample value in each time period is taken to obtain the time period bit error rate and time period signal-to-noise ratio. At the same time, the standard deviation of the bit error rate and the standard deviation of the signal-to-noise ratio in each time period are calculated to characterize the degree of parameter fluctuation in that time period. The steady-state level of optical communication transmission is obtained by weighted analysis of bit error rate and signal-to-noise ratio over multiple time periods. The steady-state evaluation formula is as follows: ； in, Let j be the steady-state value of transmission in the j-th time period. Let be the average bit error rate for the j-th time period. The acceptable threshold for bit error rate. Let j be the average optical signal-to-noise ratio during the j-th time period. This is the acceptable threshold for optical signal-to-noise ratio. Let be the standard deviation of the bit error rate in the j-th time period. denoted as the standard deviation of the optical signal-to-noise ratio in the j-th time period; u1, u2, u3, and u4 are weighting coefficients; based on the steady-state values ​​of each time period, a transmission steady-state change curve is obtained, with the vertical axis representing the steady-state value and the horizontal axis representing time.

2. The optical communication method based on high-volume single-wavelength transmission according to claim 1, characterized in that, Specifically, S1 is: Within a transmission cycle, multiple time points are divided to perform data transmission tests on the target optical module; At each time point, multi-dimensional optical layer transmission parameters and electrical layer interface parameters are collected through coherent optical modules and built-in sensing and monitoring units to form a multi-dimensional link operation dataset; In the multi-dimensional link operation dataset, optical layer transmission parameters include the optical signal-to-noise ratio (OSNR) of a single-wavelength channel, the output optical power of the transmitter, the input optical power of the receiver, the operating wavelength frequency, the real-time bit error rate, and the nonlinear effect coefficient. The electrical layer interface parameters include the differential peak-to-peak voltage, return loss, deterministic jitter, random jitter, and bit rate deviation of the serial differential interface. Dividing the time into multiple time nodes specifically involves setting N equally spaced time nodes within the transmission cycle, and extracting a set of optical layer transmission parameters and a set of electrical layer interface parameters for each time node. Dense sampling nodes are added at the beginning, middle and end of the transmission cycle, with the sampling density being three times that of the middle stage during the first 10% of the initial stage and the last 10% of the final stage.

3. The optical communication method based on high-volume single-wavelength transmission according to claim 2, characterized in that, The S1 further includes: The preset high-volume single-wavelength transmission scheme includes single-wavelength rate configuration, modulation format configuration, channel spacing configuration, and transmission distance configuration; The single-wavelength rate configuration supports switching between four rate levels: 100G, 200G, 400G, and 800G. The modulation format configuration includes multiple high-order modulation formats such as QPSK, 8QAM, 16QAM, and 64QAM. The channel spacing configuration supports three grid spacings: 50GHz, 75GHz, and 100GHz. The transmission distance configuration covers four typical transmission spans: 80km, 120km, 200km, and 400km. Before data transmission testing, a high-volume single-wavelength transmission scheme of the corresponding level is matched according to the nominal specifications of the target optical module and the application scenario to complete the initialization of optical link parameters and the clock synchronization calibration of the transceiver end.

4. The optical communication method based on high-volume single-wavelength transmission according to claim 3, characterized in that, Specifically, S2 is: First, outlier removal was performed on the original multi-dimensional link operation dataset. The 3σ criterion was used to identify and remove outlier sampling points that exceeded three times the standard deviation. Missing data was filled in using linear interpolation. The differences between each core parameter of the optical layer and its corresponding standard value are calculated as multi-dimensional sequence values. The optical communication performance sequence is obtained by weighted fusion analysis of the multi-dimensional sequence values ​​to obtain the optical communication performance index value. The optical communication performance index values ​​at multiple time points are serialized to obtain the optical communication performance sequence; The electrical performance sequence is obtained by comparing and weighting the differences between the core parameters of the electrical layer and the standard parameters.

5. The optical communication method based on high-volume single-wavelength transmission according to claim 4, characterized in that, Specifically, S3 is: Using time nodes as independent variables and optical communication performance index values ​​as dependent variables, a univariate linear regression model is constructed: P1(t) = a1×t + b1, where P1(t) is the predicted optical communication performance value, a1 is the optical performance attenuation slope, and b1 is the initial intercept of optical performance. The least squares method is used to solve the model parameters to minimize the sum of squared residuals between the actual and predicted values. A linear regression model for the electrical performance sequence is constructed: P2(t) = a2×t + b2, where P2(t) is the predicted electrical performance value, a2 is the electrical performance attenuation slope, and b2 is the initial intercept of the electrical performance; the attenuation direction and attenuation rate of optical communication and electrical performance are characterized by the sign and absolute value of the attenuation slope, respectively. The performance degradation curve includes the optical communication performance degradation curve and the electrical performance degradation curve. The optical communication performance degradation curve is obtained by jointly fitting M1 continuous predicted values ​​obtained by linear regression with the last M2 measured data points in the optical communication performance sequence. The fitting method is to use cubic spline interpolation to smoothly connect the M2 discrete measured points with the predicted line segments to form a continuous degradation curve that can characterize the entire transmission cycle and extend to the subsequent prediction period, which is marked as the optical communication performance degradation curve. Based on the continuous predicted values ​​of the electrical performance sequence, an electrical performance degradation curve is generated by combining measured data.

6. The optical communication method based on high-volume single-wavelength transmission according to claim 1, characterized in that, Specifically, S5 is: The performance degradation curve and the steady-state transmission change curve are truncated at the tail end of the curve. Data points were extracted at consistent intervals, and data were obtained based on... The first and second sequences of data points; The data points of the first and second sequences are standardized, and the grey relational analysis method is introduced to evaluate the correlation between the first and second sequences and obtain the correlation degree. The efficiency and steady-state level of optical communication transmission of the target optical module are evaluated based on the correlation degree characterizing the correlation strength between performance degradation and transmission steady state.

7. An optical communication device based on high-volume single-wavelength transmission, characterized in that, include: processor; And a memory storing computer program instructions that, when executed by the processor, cause the processor to perform the optical communication method based on high-volume single-wavelength transmission as described in claim 1.

8. An optical communication system based on high-volume single-wavelength transmission, characterized in that, The system includes: a memory, a processor, and a communication terminal. The memory includes an optical communication program based on high-volume single-wavelength transmission. When the high-volume single-wavelength transmission optical communication program is executed by the processor, it implements the optical communication method based on high-volume single-wavelength transmission as described in claim 1.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes an optical communication program based on high-volume single-wavelength transmission, which, when executed by a processor, implements the steps of the optical communication method based on high-volume single-wavelength transmission as described in any one of claims 1 to 6.

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