A method and device for networking planning of an ultra-long-span marine optical transmission system

Abstract

The application discloses a method and device for network planning of an ultra-long-span marine optical transmission system, which comprises the following steps: obtaining a plurality of target influence factors of the marine optical transmission system; performing correlation analysis on each target influence factor to obtain a correlation analysis result of each target influence factor; performing superimposed linear fitting analysis on the correlation analysis results of all the target influence factors to obtain a superimposed linear fitting analysis result; and planning an optical transmission link of the marine optical transmission system according to the superimposed linear fitting analysis result to determine a target number of optical amplification sections in the optical transmission link and a target optical cable length of each optical amplification section. It can be seen that the application can improve the accuracy of determining the number of optical amplification sections and the optical cable length in the optical transmission link, reduce the loss of the optical transmission performance of the marine optical transmission system, and thus is favorable for improving the optical transmission performance of the marine optical transmission system.

Description

Technical Field

[0001] This invention relates to the field of optical fiber communication technology, and in particular to a method and apparatus for planning the networking of an ultra-long-distance marine optical transmission system. Background Technology

[0002] With the rapid development of global information technology and the accelerating global economic integration, the explosive growth of data traffic between countries and data centers has spurred the rapid development of international backbone communication systems and satellite communication systems. In recent years, many countries have launched communication satellites to achieve inter-country communication, but due to the relatively small bandwidth of satellite communication, inter-country communication still mainly relies on submarine optical cables.

[0003] However, submarine optical cable links are mostly transoceanic links, belonging to long-distance transmission links. Physical damage in the link accumulates continuously during transmission, degrading the optical signal quality at the receiving end. This effect becomes increasingly severe as the cable length increases, and its impact on the system's optical transmission performance becomes increasingly complex. Therefore, proposing a technical solution to improve the optical transmission performance of long-distance transmission links in marine optical transmission systems is particularly important. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and apparatus for planning the networking of an ultra-long span marine optical transmission system, which can improve the accuracy of determining the number of optical amplifier segments and the length of optical cables in the optical transmission link, reduce the loss of optical transmission performance of the marine optical transmission system, and thus help improve the optical transmission performance of the marine optical transmission system.

[0005] To address the aforementioned technical problems, the first aspect of this invention discloses a method for planning the networking of an ultra-long-distance marine optical transmission system, wherein the marine optical transmission system includes optical transmission links, and the method includes:

[0006] Obtain multiple target influencing factors of the aforementioned marine optical transmission system;

[0007] A correlation analysis is performed on each of the target influencing factors to obtain the correlation analysis results for each target influencing factor. The correlation analysis results are used to represent the correlation between the target influencing factor and the optical cable parameters of the optical transmission link.

[0008] The correlation analysis results of all the target influencing factors were subjected to superimposed linear fitting analysis to obtain the superimposed linear fitting analysis results;

[0009] Based on the superimposed linear fitting analysis results, the optical transmission links of the marine optical transmission system are planned to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

[0010] As an optional implementation, in the first aspect of the present invention, the superimposed linear fitting analysis results are used to represent the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible value of the optical cable length of each optical amplifier segment;

[0011] The correlation analysis results of all the target influencing factors are superimposed with linear fitting analysis to obtain the superimposed linear fitting analysis results, including:

[0012] Based on the correlation analysis results of each of the target influencing factors, the degree of influence of each of the target influencing factors in the optical transmission link is determined;

[0013] Based on the predetermined system activation requirements and the degree of influence of each target influencing factor in the optical transmission link, the demand range of each target influencing factor is determined. The demand range includes multiple values, and any one of the multiple values ​​is between the maximum demand value and the minimum demand value. The maximum demand value and the minimum demand value are determined when the target influencing factor meets the system activation requirements.

[0014] Based on the demand range of each of the target influencing factors, the optical cable parameters of the optical transmission link are linearly fitted to obtain at least one relationship curve corresponding to each of the target influencing factors. The relationship curve is used to represent the relationship between the target influencing factors and the optical cable parameters of the optical transmission link.

[0015] Based on all the relationship curves corresponding to each of the target influencing factors, determine the maximum allowable number of optical amplifier segments in the optical transmission link and the maximum allowable optical cable length of each optical amplifier segment.

[0016] As an optional implementation, in the first aspect of the present invention, the step of planning the optical transmission link of the marine optical transmission system based on the superimposed linear fitting analysis results to determine the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment includes:

[0017] Based on the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment, a first number of optical amplifier segments and a first optical cable length for each optical amplifier segment are determined. The first number of optical amplifier segments is less than or equal to the maximum permissible number of optical amplifier segments and the first optical cable length is less than or equal to the maximum permissible length of optical cable for the corresponding optical amplifier segment.

[0018] The output receiving power of the optical transmission link is determined based on the first number of optical amplifier segments in the optical transmission link and the first optical cable length of each optical amplifier segment.

[0019] Based on the output power of the optical transmission link and the predetermined effective conditions for optical path transmission, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined.

[0020] As an optional implementation, in the first aspect of the present invention, determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the output received power of the optical transmission link and predetermined optical path transmission effective conditions includes:

[0021] Determine whether the output power of the optical transmission link meets the predetermined effective conditions for optical path transmission.

[0022] If it is determined that the output power of the optical transmission link meets the effective conditions for optical path transmission, then the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the first optical cable length of the optical amplifier segments is determined as the target optical cable length of the optical amplifier segments; and / or,

[0023] If it is determined that the output receiving power of the optical transmission link does not meet the effective conditions for optical path transmission, the optical transmission link of the marine optical transmission system is replanned to obtain the replanning result. Based on the replanning result, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined. The replanning result is used to indicate that the output receiving power determined based on the replanned number of optical amplifier segments and the optical cable length of the optical amplifier segments meets the effective conditions for optical path transmission.

[0024] As an optional implementation, in the first aspect of the present invention, the replanning result includes a first type of information and a second type of information. The first type of information is empty or includes a second quantity obtained after adjusting the first quantity of the optical amplifier segments. The second type of information is empty or includes a second optical cable length of the target optical amplifier segment obtained after adjusting the first optical cable length of the target optical amplifier segment. The target optical amplifier segment is at least one of all the optical amplifier segments, and the first type of information and the second type of information are not simultaneously empty.

[0025] The step of determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the replanning results includes:

[0026] When the first type of information is empty, the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment. The first optical cable length of the remaining optical amplifier segments (excluding the target optical amplifier segment) is determined as the target optical cable length of the remaining optical amplifier segments; and / or,

[0027] When the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, and the first optical cable length of the optical amplifier segment is determined as the target optical cable length of the optical amplifier segment; and / or,

[0028] When neither the first type of information nor the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment, and the first optical cable length of the remaining optical amplifier segments other than the target optical amplifier segment is determined as the target optical cable length of the remaining optical amplifier segments.

[0029] As an optional implementation, in the first aspect of the present invention, the target influencing factors include at least one of the following: factors affecting optical signal transmission impairment in the marine optical transmission system, factors affecting nonlinear effects in the marine optical transmission system, and factors affecting network node effects in the marine optical transmission system.

[0030] The factors influencing the optical signal transmission impairment include at least one of the following: optical signal-to-noise ratio of the marine optical transmission system, chromatic dispersion of the marine optical transmission system, spontaneous emission noise of the marine optical transmission system, and polarization mode dispersion of the marine optical transmission system; the factors influencing the nonlinear effects include at least one of the following: self-phase modulation of the marine optical transmission system, cross-phase modulation of the marine optical transmission system, and four-wave mixing of the marine optical transmission system; the factors influencing the network node effects include the insertion loss of the filters in the marine optical transmission system.

[0031] The optical cable parameters in the optical transmission link include at least one of the following: the number of optical amplifier segments in the optical transmission link, the optical cable length of each optical amplifier segment in the optical transmission link, the input power of the optical transmission link, the OA noise figure of each optical amplifier in the optical transmission link, the input optical power of each optical amplifier in the optical transmission link, the optical cable attenuation coefficient of the optical transmission link, the dispersion coefficient of the optical transmission link, the transmission capacity of the optical transmission link, the optical frequency of the optical transmission link, and the reference bandwidth of the optical transmission link.

[0032] As an optional implementation, in the first aspect of the present invention, the acquisition of multiple target influencing factors of the marine optical transmission system includes:

[0033] Obtain the initial set of influencing factors for the marine optical transmission system, wherein the initial set of influencing factors includes multiple initial influencing factors;

[0034] Determine the degree of optical path transmission performance loss caused by each of the initial influencing factors to the marine optical transmission system, and obtain the degree of optical path transmission performance loss corresponding to each of the initial influencing factors;

[0035] Determine whether the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the predetermined degree of optical path transmission performance loss.

[0036] If it is determined that the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the degree of optical path transmission performance loss, then the initial influencing factor is determined as the target influencing factor.

[0037] A second aspect of this invention discloses an apparatus for planning the networking of an ultra-long-distance marine optical transmission system, wherein the marine optical transmission system includes optical transmission links, and the apparatus includes:

[0038] The acquisition module is used to acquire multiple target influencing factors of the marine optical transmission system;

[0039] An analysis module is used to perform correlation analysis on each of the target influencing factors to obtain the correlation analysis results of each of the target influencing factors. The correlation analysis results are used to represent the correlation between the target influencing factors and the optical cable parameters of the optical transmission link.

[0040] The analysis module is also used to perform superimposed linear fitting analysis on the correlation analysis results of all the target influencing factors to obtain superimposed linear fitting analysis results;

[0041] The planning module is used to plan the optical transmission links of the marine optical transmission system based on the superimposed linear fitting analysis results, so as to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

[0042] As an optional implementation, in a second aspect of the invention, the superimposed linear fitting analysis results are used to represent the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible optical cable length of each optical amplifier segment;

[0043] The analysis module includes:

[0044] The determination submodule is used to determine the degree of influence of each of the target influencing factors in the optical transmission link based on the correlation analysis results of each target influencing factor;

[0045] The determining submodule is further configured to determine the demand range of each target influencing factor based on the pre-determined system activation requirements and the degree of influence of each target influencing factor in the optical transmission link. The demand range includes multiple values, any one of which is between the maximum demand value and the minimum demand value. The maximum demand value and the minimum demand value are determined when the target influencing factor meets the system activation requirements.

[0046] The fitting submodule is used to perform linear fitting on the optical cable parameters of the optical transmission link according to the demand range of each of the target influencing factors, so as to obtain at least one relationship curve corresponding to each of the target influencing factors. The relationship curve is used to represent the relationship between the target influencing factors and the optical cable parameters of the optical transmission link.

[0047] The determining submodule is further configured to determine the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment based on all the relationship curves corresponding to each of the target influencing factors.

[0048] As an optional implementation, in a second aspect of the invention, the planning module plans the optical transmission links of the marine optical transmission system based on the superimposed linear fitting analysis results, and the method for determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment specifically includes:

[0049] Based on the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment, a first number of optical amplifier segments and a first optical cable length for each optical amplifier segment are determined. The first number of optical amplifier segments is less than or equal to the maximum permissible number of optical amplifier segments and the first optical cable length is less than or equal to the maximum permissible length of optical cable for the corresponding optical amplifier segment.

[0050] The output receiving power of the optical transmission link is determined based on the first number of optical amplifier segments in the optical transmission link and the first optical cable length of each optical amplifier segment.

[0051] Based on the output power of the optical transmission link and the predetermined effective conditions for optical path transmission, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined.

[0052] As an optional implementation, in a second aspect of the invention, the planning module determines the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the output receiving power of the optical transmission link and predetermined optical path transmission effective conditions. Specifically, this includes:

[0053] Determine whether the output power of the optical transmission link meets the predetermined effective conditions for optical path transmission.

[0054] If it is determined that the output power of the optical transmission link meets the effective conditions for optical path transmission, then the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the first optical cable length of the optical amplifier segments is determined as the target optical cable length of the optical amplifier segments; and / or,

[0055] If it is determined that the output receiving power of the optical transmission link does not meet the effective conditions for optical path transmission, the optical transmission link of the marine optical transmission system is replanned to obtain the replanning result. Based on the replanning result, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined. The replanning result is used to indicate that the output receiving power determined based on the replanned number of optical amplifier segments and the optical cable length of the optical amplifier segments meets the effective conditions for optical path transmission.

[0056] As an optional implementation, in a second aspect of the present invention, the replanning result includes a first type of information and a second type of information. The first type of information is empty or includes a second quantity obtained after adjusting a first quantity of the optical amplifier segments. The second type of information is empty or includes a second optical cable length of the target optical amplifier segment obtained after adjusting a first optical cable length of the target optical amplifier segment. The target optical amplifier segment is at least one of all the optical amplifier segments, and the first type of information and the second type of information are not simultaneously empty.

[0057] The planning module determines the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the replanning results. Specifically, this includes the following methods:

[0058] When the first type of information is empty, the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment. The first optical cable length of the remaining optical amplifier segments (excluding the target optical amplifier segment) is determined as the target optical cable length of the remaining optical amplifier segments; and / or,

[0059] When the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, and the first optical cable length of the optical amplifier segment is determined as the target optical cable length of the optical amplifier segment; and / or,

[0060] When neither the first type of information nor the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment, and the first optical cable length of the remaining optical amplifier segments other than the target optical amplifier segment is determined as the target optical cable length of the remaining optical amplifier segments.

[0061] As an optional implementation, in a second aspect of the present invention, the target influencing factors include at least one of the following: factors affecting optical signal transmission impairment in the marine optical transmission system, factors affecting nonlinear effects in the marine optical transmission system, and factors affecting network node effects in the marine optical transmission system.

[0062] The factors influencing the optical signal transmission impairment include at least one of the following: optical signal-to-noise ratio of the marine optical transmission system, chromatic dispersion of the marine optical transmission system, spontaneous emission noise of the marine optical transmission system, and polarization mode dispersion of the marine optical transmission system; the factors influencing the nonlinear effects include at least one of the following: self-phase modulation of the marine optical transmission system, cross-phase modulation of the marine optical transmission system, and four-wave mixing of the marine optical transmission system; the factors influencing the network node effects include the insertion loss of the filters in the marine optical transmission system.

[0063] The optical cable parameters in the optical transmission link include at least one of the following: the number of optical amplifier segments in the optical transmission link, the optical cable length of each optical amplifier segment in the optical transmission link, the input power of the optical transmission link, the OA noise figure of each optical amplifier in the optical transmission link, the input optical power of each optical amplifier in the optical transmission link, the optical cable attenuation coefficient of the optical transmission link, the dispersion coefficient of the optical transmission link, the transmission capacity of the optical transmission link, the optical frequency of the optical transmission link, and the reference bandwidth of the optical transmission link.

[0064] As an optional implementation, in the second aspect of the present invention, the method by which the acquisition module acquires multiple target influencing factors of the marine optical transmission system specifically includes:

[0065] Obtain the initial set of influencing factors for the marine optical transmission system, wherein the initial set of influencing factors includes multiple initial influencing factors;

[0066] Determine the degree of optical path transmission performance loss caused by each of the initial influencing factors to the marine optical transmission system, and obtain the degree of optical path transmission performance loss corresponding to each of the initial influencing factors;

[0067] Determine whether the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the predetermined degree of optical path transmission performance loss.

[0068] If it is determined that the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the degree of optical path transmission performance loss, then the initial influencing factor is determined as the target influencing factor.

[0069] A third aspect of this invention discloses another apparatus for planning the networking of an ultra-long-distance marine optical transmission system, the apparatus comprising:

[0070] Memory containing executable program code;

[0071] A processor coupled to the memory;

[0072] The processor calls the executable program code stored in the memory to execute the method for planning the networking of ultra-long-span marine optical transmission systems disclosed in the first aspect of the present invention.

[0073] The fourth aspect of the present invention discloses a computer-storable medium storing computer instructions, which, when invoked, are used to execute the method for planning the networking of an ultra-long-distance marine optical transmission system disclosed in the first aspect of the present invention.

[0074] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0075] In this embodiment of the invention, multiple target influencing factors of the marine optical transmission system are acquired; correlation analysis is performed on each target influencing factor to obtain the correlation analysis result for each target influencing factor, which is used to represent the correlation between the target influencing factor and the optical cable parameters of the optical transmission link; superimposed linear fitting analysis is performed on the correlation analysis results of all target influencing factors to obtain the superimposed linear fitting analysis result; based on the superimposed linear fitting analysis result, the optical transmission link of the marine optical transmission system is planned to determine the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment. It is evident that implementing this invention enables correlation analysis of the acquired target influencing factors of the marine optical transmission system, obtaining correlation analysis results, and superimposed linear fitting analysis of the correlation analysis results to obtain the superimposed linear fitting analysis result. By superimposing the linear fitting analysis result, the accuracy of determining the target number of optical amplifier segments and the target optical cable length in the optical transmission link can be improved, reducing the loss of optical transmission performance of the marine optical transmission system, thereby contributing to improving the optical transmission performance of the marine optical transmission system. Attached Figure Description

[0076] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] Figure 1 This is a flowchart illustrating a method for planning a network of an ultra-long-span marine optical transmission system, as disclosed in an embodiment of the present invention.

[0078] Figure 2 This is a flowchart illustrating another method for planning a network of ultra-long-span marine optical transmission systems disclosed in an embodiment of the present invention.

[0079] Figure 3 This is a graph showing the relationship between the output receiving power, the number of optical amplifier sections, and the optical cable length of each optical amplifier section, as disclosed in an embodiment of the present invention.

[0080] Figure 4 This invention discloses a PMD for single-mode optical fibers of different types and different PMDs of the same type. δ Reference value specification requirements diagram;

[0081] Figure 5 This is a linear fitting diagram of polarization mode dispersion and maximum optical cable length for an optical transmission link disclosed in an embodiment of the present invention.

[0082] Figure 6This is a linear fitting diagram of the enhanced signal-to-noise ratio and optical cable length of an optical transmission link disclosed in an embodiment of the present invention;

[0083] Figure 7 This is a linear fitting diagram of the dispersion chromaticity of an optical transmission link and the length of the optical cable, as disclosed in an embodiment of the present invention.

[0084] Figure 8 This is a linear fitting diagram of the comprehensive linearity factor of an optical transmission link and the length of the optical cable, as disclosed in an embodiment of the present invention.

[0085] Figure 9 This is a schematic diagram of the structure of a device for planning the networking of an ultra-long span marine optical transmission system disclosed in an embodiment of the present invention;

[0086] Figure 10 This is a schematic diagram of the structure of another device for planning the networking of an ultra-long span marine optical transmission system disclosed in an embodiment of the present invention;

[0087] Figure 11 This is a schematic diagram of the structure of another device for planning the networking of an ultra-long span marine optical transmission system disclosed in an embodiment of the present invention. Detailed Implementation

[0088] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0089] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0090] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0091] This invention discloses a method and apparatus for planning the network of an ultra-long-span marine optical transmission system. It can perform correlation analysis on the acquired target influencing factors of the marine optical transmission system, obtain the correlation analysis results, and then perform superimposed linear fitting analysis on the correlation analysis results to obtain superimposed linear fitting analysis results. By superimposing the linear fitting analysis results, the accuracy of determining the target number of optical amplifier segments and the target optical cable length in the optical transmission link can be improved, reducing the loss of optical transmission performance of the marine optical transmission system, thereby contributing to the improvement of the optical transmission performance of the marine optical transmission system. Detailed descriptions follow.

[0092] Example 1

[0093] Please see Figure 1 , Figure 1 This is a flowchart illustrating a method for planning a network of an ultra-long-span marine optical transmission system, as disclosed in an embodiment of the present invention. Figure 1 The described method for planning the networking of ultra-long-distance marine optical transmission systems can be applied to devices for planning such systems, wherein the marine optical transmission system may include optical transmission links. Optionally, the device may include planning equipment or a planning server, wherein the planning server may include a cloud server or a local server; this embodiment of the invention is not limited thereto. Figure 1 As shown, the method for planning the network of this ultra-long-distance marine optical transmission system may include the following operations:

[0094] 101. Obtain multiple target influencing factors of the marine optical transmission system.

[0095] It should be noted that each target influencing factor is an influencing factor that can be used to analyze the transmission performance of the marine optical transmission system.

[0096] 102. Conduct a correlation analysis on each target influencing factor to obtain the correlation analysis results for each target influencing factor.

[0097] The correlation analysis results are used to represent the correlation between the target influencing factors and the optical cable parameters of the optical transmission link. The correlation between the target influencing factors and the optical cable parameters of the optical transmission link can be expressed by an expression between the two.

[0098] 103. Perform superimposed linear fitting analysis on the correlation analysis results of all target influencing factors to obtain the superimposed linear fitting analysis results.

[0099] Optionally, the superimposed linear fitting analysis can be performed by superimposing the correlation analysis results of all target influencing factors to obtain the superimposed analysis results, and then performing linear fitting analysis on the superimposed analysis results; or it can be performed by performing linear fitting analysis on the correlation analysis results of each target influencing factor in the correlation analysis results of all target influencing factors to obtain the linear fitting analysis results of each target influencing factor, and then performing superimposed analysis on all the linear fitting analysis results. The embodiments of the present invention do not limit this.

[0100] 104. Based on the results of the superimposed linear fitting analysis, the optical transmission links of the marine optical transmission system are planned to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

[0101] The total optical cable length of the optical transmission link can be determined based on the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment. When the number of optical amplifier segments is 1, the total optical cable length of the optical transmission link is the target optical cable length of that optical amplifier segment.

[0102] Optionally, the target number of optical amplifier segments in the determined optical transmission link can be the maximum permissible number of optical amplifier segments, or a number less than the maximum permissible number. The maximum permissible number is the maximum number of optical amplifier segments obtained under the premise that the optical signal in the optical transmission link meets its performance requirements during transmission. Optionally, the target optical cable length for each optical amplifier segment in the determined optical transmission link can be the maximum permissible optical cable length for that optical amplifier segment, or a number less than the maximum permissible optical cable length. The maximum permissible optical cable length for each optical amplifier segment is the maximum optical cable length for that optical amplifier segment obtained under the premise that the optical signal in the optical transmission link meets its performance requirements during transmission. This embodiment of the invention does not impose any limitation on this.

[0103] As can be seen, the method for planning the network of ultra-long span marine optical transmission systems described in the embodiments of the present invention can perform correlation analysis on the target influencing factors of the acquired marine optical transmission system, obtain the correlation analysis results, and perform superimposed linear fitting analysis on the correlation analysis results to obtain the superimposed linear fitting analysis results. By superimposing the linear fitting analysis results, the accuracy of determining the target number of optical amplifier segments and the target optical cable length in the optical transmission link can be improved, reducing the loss of optical transmission performance of the marine optical transmission system, thereby helping to improve the optical transmission performance of the marine optical transmission system.

[0104] Example 2

[0105] Please see Figure 2 , Figure 2 This is a flowchart illustrating a method for planning a network of an ultra-long-span marine optical transmission system, as disclosed in an embodiment of the present invention. Figure 2The described method for planning the networking of ultra-long-distance marine optical transmission systems can be applied to devices for planning such systems, wherein the marine optical transmission system may include optical transmission links. Optionally, the device may include planning equipment or a planning server, wherein the planning server may include a cloud server or a local server; this embodiment of the invention is not limited thereto. Figure 2 As shown, the method for planning the network of this ultra-long-distance marine optical transmission system may include the following operations:

[0106] 201. Obtain the initial set of influencing factors for the marine optical transmission system.

[0107] The initial set of influencing factors may include multiple initial influencing factors.

[0108] 202. Determine the degree of optical path transmission performance loss caused by each initial influencing factor to the marine optical transmission system, and obtain the degree of optical path transmission performance loss corresponding to each initial influencing factor.

[0109] Among them, the degree of optical path transmission performance loss refers to the degree of optical signal loss that occurs during the transmission of optical signals by the optical cable.

[0110] 203. Determine whether the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the predetermined degree of optical path transmission performance loss.

[0111] The predetermined optical path transmission performance loss can be a percentage of the optical signal loss in all optical signals during the optical signal transmission process. Its value can be 80%, 70%, or other predetermined values. This embodiment of the invention does not limit the value.

[0112] If the result of step 203 is yes, then proceed to step 204; if the result of step 203 is no, then end the process.

[0113] 204. Determine the initial influencing factors as the target influencing factors.

[0114] 205. Conduct a correlation analysis on each target influencing factor to obtain the correlation analysis results for each target influencing factor.

[0115] 206. Perform superimposed linear fitting analysis on the correlation analysis results of all target influencing factors to obtain the superimposed linear fitting analysis results.

[0116] 207. Based on the results of the superimposed linear fitting analysis, the optical transmission links of the marine optical transmission system are planned to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

[0117] In this embodiment of the invention, for other descriptions of steps 205-207, please refer to the detailed description of steps 102-104 in Embodiment 1. These descriptions will not be repeated in this embodiment of the invention.

[0118] As can be seen, the method for planning the ultra-long-span marine optical transmission system described in this embodiment of the invention can perform correlation analysis on the acquired target influencing factors of the marine optical transmission system, obtain correlation analysis results, and then perform superimposed linear fitting analysis on the correlation analysis results to obtain superimposed linear fitting analysis results. By superimposing the linear fitting analysis results, the accuracy of determining the target number of optical amplifier segments and the target optical cable length in the optical transmission link can be improved, reducing the loss of optical transmission performance of the marine optical transmission system, thereby improving the optical transmission performance of the marine optical transmission system. In addition, it can accurately screen out the target influencing factors that cause a large degree of loss in the ground optical path transmission performance of the marine optical transmission system from multiple initial influencing factors, thereby improving the accuracy of determining the target influencing factors.

[0119] In an optional embodiment, the superimposed linear fitting analysis results are used to represent the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible optical cable length for each optical amplifier segment. In step 206 above, performing a superimposed linear fitting analysis on the correlation analysis results of all target influencing factors to obtain the superimposed linear fitting analysis results may include:

[0120] Based on the correlation analysis results of each target influencing factor, the degree of influence of each target influencing factor in the optical transmission link is determined;

[0121] Based on the predetermined system commissioning requirements and the degree of influence of each target influencing factor in the optical transmission link, the demand range of each target influencing factor is determined.

[0122] Based on the demand range of each target influencing factor, the optical cable parameters of the optical transmission link are linearly fitted to obtain at least one relationship curve corresponding to each target influencing factor;

[0123] Based on all the relationship curves corresponding to each of the target influencing factors, determine the maximum allowable number of optical amplifier segments in the optical transmission link and the maximum allowable length of optical cable for each optical amplifier segment.

[0124] The demand range can include multiple values, any one of which lies between the maximum and minimum demand values. The maximum and minimum demand values ​​are determined when the target influencing factors meet the system's activation requirements. The relationship curve represents the relationship between the target influencing factors and the optical cable parameters of the optical transmission link.

[0125] It should be noted that the conditions for system commissioning are met when the optical signal in the optical transmission link of the marine optical transmission system can be transmitted normally.

[0126] As can be seen, this optional embodiment can accurately determine the demand range of the target influencing factors based on the degree of influence of the accurately determined target influencing factors in the optical transmission link and the pre-determined system commissioning requirements. It also performs linear fitting on the accurately determined demand range, which improves the accuracy of determining the relationship curves corresponding to the target influencing factors. Through all relationship curves, it can improve the accuracy and reliability of determining the maximum allowable number of optical amplifier sections and the maximum allowable value of optical cable length in the optical transmission link.

[0127] In an optional embodiment, step 207 above, based on the results of the superimposed linear fitting analysis, plans are made for the optical transmission links of the marine optical transmission system to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment. This may include:

[0128] Based on the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment, determine the first number of optical amplifier segments in the optical transmission link and the first length of optical cable for each optical amplifier segment.

[0129] The output receiving power of the optical transmission link is determined based on the first number of optical amplifier segments in the optical transmission link and the first optical cable length of each optical amplifier segment.

[0130] Based on the output power of the optical transmission link and the predetermined effective conditions for optical path transmission, determine the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment.

[0131] Among them, the first number of optical amplifier sections is less than or equal to the maximum allowable number of optical amplifier sections, and the first optical cable length is less than or equal to the maximum allowable value of the optical cable length of the corresponding optical amplifier section.

[0132] Optionally, the optical transmission link may include a transmitter and a receiver, with multiple optical amplifier sections between the transmitter and receiver. Each optical amplifier section has a corresponding optical amplifier. The transmitter receives the incident optical power and passes the incident optical power through the gain and attenuation of the optical amplifiers corresponding to all optical amplifier sections to obtain the output received power, which is then output from the receiver.

[0133] As can be seen, this optional embodiment can accurately determine the output receiving power of the optical transmission link based on the determined number of candidate optical amplifier segments and the candidate optical cable length, and improve the accuracy and reliability of determining the target number of optical amplifier segments and the target optical cable length based on the accurately determined output receiving power and the pre-determined effective optical path transmission conditions.

[0134] In this optional embodiment, as an optional implementation, determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the output received power of the optical transmission link and the predetermined effective conditions for optical path transmission may include:

[0135] Determine whether the output power of the optical transmission link meets the predetermined effective conditions for optical path transmission.

[0136] If it is determined that the received power at the output end of the optical transmission link meets the effective conditions for optical path transmission, then the first number of optical amplifier sections is determined as the target number of optical amplifier sections, and the first optical cable length of the optical amplifier sections is determined as the target optical cable length of the optical amplifier sections; and / or,

[0137] If it is determined that the output power of the optical transmission link does not meet the effective conditions for optical path transmission, the optical transmission link of the marine optical transmission system is replanned to obtain the replanning result. Based on the replanning result, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined.

[0138] The replanning result is used to indicate that the output receiving power, determined based on the number of optical amplifier sections and the optical cable length of the optical amplifier sections after replanning, meets the effective conditions for optical path transmission.

[0139] Specifically, the formula for calculating the received power at the output end of an optical transmission link is as follows:

[0140] Output received power = incident light power + total optical fiber gain - total optical fiber attenuation;

[0141] Wherein, the total optical fiber gain is the sum of the optical fiber gains of all optical amplifier segments, and the optical fiber gain of each optical amplifier segment is the product of the amplification efficiency of the optical amplifier in that segment and the input optical power; the total optical fiber attenuation is the sum of the optical fiber attenuation values ​​of all optical amplifier segments, and the optical fiber attenuation value of each optical amplifier segment is the product of the optical fiber attenuation coefficient of that segment and the optical fiber length of that segment, such as... Figure 3 The figure shows the relationship between the output receiving power of the optical transmission link and the number of optical amplifier sections and the length of the optical cable for each optical amplifier section.

[0142] Specifically, determining whether the received power at the output end of the optical transmission link meets the predetermined effective conditions for optical path transmission can include:

[0143] Obtain the receiver sensitivity at the output end of the optical transmission link;

[0144] Detect whether the output receiving power of the optical transmission link is greater than or equal to the output receiving sensitivity.

[0145] If the received power at the output end of the optical transmission link is detected to be greater than or equal to the received sensitivity at the output end, then it is determined that the received power at the output end of the optical transmission link meets the predetermined effective conditions for optical path transmission.

[0146] If the received power at the output end of the optical transmission link is detected to be less than or equal to the received sensitivity at the output end, then it is determined that the received power at the output end of the optical transmission link does not meet the above-mentioned effective conditions for optical path transmission.

[0147] As can be seen, this optional implementation can accurately determine the output receiving power, obtain the determination result, and improve the accuracy of planning the optical transmission link based on the determination result, thereby helping to improve the accuracy of determining the target number of optical amplifier sections and the target optical cable length.

[0148] In this optional implementation, the replanning result may include a first type of information and a second type of information. The first type of information may be empty or may include a second number obtained by adjusting the first number of optical amplifier segments. The second type of information may be empty or may include a second optical cable length of the target optical amplifier segment obtained by adjusting the first optical cable length of the target optical amplifier segment. The target optical amplifier segment is at least one of all optical amplifier segments, and the first and second types of information are not simultaneously empty. Determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the replanning result may include:

[0149] When the first type of information is empty, the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment. The first optical cable length of the remaining optical amplifier segments (excluding the target optical amplifier segment) is determined as the target optical cable length of the remaining optical amplifier segments; and / or,

[0150] When the second type of information is empty, the second quantity of the optical amplifier section is determined as the target quantity of the optical amplifier section, and the first optical cable length of the optical amplifier section is determined as the target optical cable length of the optical amplifier section; and / or,

[0151] When neither the first type of information nor the second type of information is empty, the second quantity of optical amplifier segments is determined as the target quantity of optical amplifier segments, the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment, and the first optical cable length of the remaining optical amplifier segments other than the target optical amplifier segment is determined as the target optical cable length of the remaining optical amplifier segments.

[0152] It is evident that this optional implementation can also improve the accuracy and diversity of optical transmission link replanning by using the first and second types of information contained in the determined replanning results when the optical transmission link needs to be replanned. This is beneficial to improving the accuracy and diversity of determining the target number of optical amplifier segments and the target optical cable length.

[0153] In an optional embodiment, the target influencing factors include at least one of the following: factors affecting optical signal transmission impairment in marine optical transmission systems, factors affecting nonlinear effects in marine optical transmission systems, and factors affecting network node effects in marine optical transmission systems.

[0154] Among them, the factors affecting optical signal transmission impairment include at least one of the following: optical signal-to-noise ratio, chromatic dispersion, spontaneous emission noise, and polarization mode dispersion of the marine optical transmission system; the factors affecting nonlinear effects include at least one of the following: self-phase modulation, cross-phase modulation, and four-wave mixing of the marine optical transmission system; and the factors affecting network node effects include the insertion loss of filters in the marine optical transmission system.

[0155] The optical cable parameters in an optical transmission link include at least one of the following: the number of optical amplifier segments in the optical transmission link, the optical cable length of each optical amplifier segment in the optical transmission link, the input fiber power of the optical transmission link, the OA noise figure of each optical amplifier in the optical transmission link, the input optical power of each optical amplifier in the optical transmission link, the optical cable attenuation coefficient of the optical transmission link, the dispersion coefficient of the optical transmission link, the transmission capacity of the optical transmission link, the optical frequency of the optical transmission link, and the reference bandwidth of the optical transmission link.

[0156] Specifically, when the target influencing factor includes the optical signal-to-noise ratio (SNR) of the optical transmission link, the expression relating the SNR of the optical transmission link to the number of optical amplifier segments and the length of the optical cable in each amplifier segment is as follows:

[0157]

[0158] Wherein, OSNR represents the optical signal-to-noise ratio of the optical transmission link, P out L represents the single-wavelength input power of an optical transmission link. i NF represents the optical cable attenuation of the i-th optical amplifier segment in the optical transmission link. i The noise figure of the optical amplifier corresponding to the i-th optical amplifier segment in the optical transmission link is represented by N, and N represents the number of optical amplifier segments in the optical transmission link.

[0159] The optical cable attenuation of each optical amplifier segment is determined by the product of the optical cable attenuation coefficient and the optical cable length of that segment. Submarine optical cables generally use the G.654 type, whose optical amplifier segment attenuation coefficient is lower than that of the G.652 type commonly used in terrestrial optical cables.

[0160] When the target influencing factor includes the chromatic dispersion of the optical transmission link, the expression for the chromatic dispersion of each optical amplifier segment and the optical cable length of that segment is:

[0161] σ=δλ×D(λ)×L;

[0162] Where σ is the chromatic dispersion of the optical amplifier section, δλ is the root-mean-square spectral width of the light source, D(λ) is the dispersion coefficient, and L is the optical cable length of the optical amplifier section. From this expression, it can be seen that the larger the bandwidth of the optical fiber, the greater the transmission capacity, and the greater the total dispersion value. Therefore, when transmitting optical signals, the impact of fiber dispersion on the transmission distance must be considered. It is best to use zero-dispersion G.653 fiber for transmission. However, when the fiber dispersion is zero, transmitting WDM wavelength division multiplexing signals will produce nonlinear effects such as four-wave mixing. Therefore, the dispersion should be small, but not zero.

[0163] When the target influencing factor includes the polarization mode dispersion of the optical transmission link, if the polarization mode dispersion and transmission rate of the optical fiber in the optical transmission link are known, the expression for the maximum value of the optical cable length of the optical transmission link can be derived as follows:

[0164] L max =10000 / (PMD) δ (×bit rate) 2 ;

[0165] Among them, PMD δ This represents the polarization mode dispersion of the ocean optical transmission system. Figure 4 This list includes PMDs for single-mode fibers of different types and different PMDs of the same type. δ Reference value specifications.

[0166] When the target influencing factor includes spontaneous emission noise of the optical transmission link, spontaneous emission noise can enhance the optical signal-to-noise ratio (SNR) of the optical transmission link, resulting in an enhanced SNR. The expression relating the enhanced SNR to the number of optical amplifier segments and the length of the optical cable in each amplifier segment is as follows:

[0167]

[0168] Wherein, OSNR represents the enhanced signal-to-noise ratio of the optical transmission link, P in NF represents the incident optical power of the optical amplifier corresponding to the i-th optical amplifier segment in the optical transmission link. iThe spontaneous emission noise figure of the optical amplifier corresponding to the i-th optical amplifier segment in the optical transmission link is represented by h, which represents Planck's constant, and ν represents the optical transmission frequency of the optical transmission link. r This represents the reference bandwidth of the optical transmission link.

[0169] Optionally, the Planck constant is set to 6.63 x 10⁻³⁴ J·s, the optical transmission frequency to 1550 nm, and the reference bandwidth to 12.5 GHz. In this case, when the optical cable attenuation in each optical amplifier segment of the optical transmission link is uniform and compensated by the same spontaneous emission noise generated by the same optical amplifier, and the ratio between the power of the spontaneous emission noise of the optical amplifier corresponding to each optical amplifier segment and the signal power of that optical amplifier is less than a preset ratio, the expression for the enhanced optical signal-to-noise ratio of the optical transmission link in relation to the optical cable length is simplified to obtain the simplified expression:

[0170] OSNR″=58+P out -L i -NF-10Lg(N);

[0171] Wherein, NF represents the spontaneous emission noise figure generated by the optical amplifier corresponding to any optical amplifier segment in the optical transmission link.

[0172] Specifically, considering the factors influencing the above objectives and current practical applications, examples using 100G or 200G wavelength division multiplexing (WDM) systems are provided below:

[0173] When PMD δ =0.016ps / km 1 / 2 At that time, linear fitting was performed on the polarization mode dispersion according to the 2.5G, 10G, 100G, and 200G wavelength division systems respectively, and the results were obtained. Figure 5 The linear fitting diagram of polarization mode dispersion and maximum optical cable length shows that, given the selected wavelength division multiplexing (WDM) system rate, polarization mode dispersion is inversely related to optical cable length. Therefore, optical fibers with low polarization mode dispersion should be selected. In addition, for WDM systems involving submarine cables, while considering system capacity, optical fibers with the least impact on the system should be selected as much as possible.

[0174] When P out =1dBm, NF=6, N=1, and the attenuation coefficient of the submarine optical cable is 0.19. A linear fit is performed on the enhanced signal-to-noise ratio to obtain... Figure 6 The linear fitting graph of the enhanced signal-to-noise ratio versus the length of the optical cable, as shown in the figure. Figure 6 The figure shows that, considering only a single optical amplifier segment, the transmission distance of the single optical amplifier segment with enhanced signal-to-noise ratio should be 279km. When considering optical transmission with multiple optical amplifier segments, it is only necessary to add optical amplifiers at appropriate locations in the optical transmission link.

[0175] When D(λ) = 20 ps / km·nm, When linear fitting is performed on the dispersion chromaticity, the following is obtained: Figure 7 The linear fit diagram of dispersion chromaticity and optical cable length is shown.

[0176] comprehensive Figures 5-7 The three types of influencing factors are analyzed by superimposing a comprehensive linear factor composed of the above three types of influencing factors, and the results are as follows: Figure 8 The linear fitting graph of the comprehensive linear factors and the optical cable length shown is obtained by using the linear equation optimal solution algorithm. The maximum allowable value of the total optical cable length of the optical transmission link is 200km when only considering a single optical amplifier segment.

[0177] As can be seen, this optional embodiment can analyze diverse target influencing factors and optical cable parameters, improving the diversity and reliability of determining the number of targets and the length of target optical cables in the optical amplifier section.

[0178] Example 3

[0179] Please see Figure 9 , Figure 9 This is a schematic diagram of a device for planning a network of an ultra-long-distance marine optical transmission system, as disclosed in an embodiment of the present invention. The marine optical transmission system may include optical transmission links. Optionally, Figure 9 The apparatus for planning the network of the ultra-long-distance marine optical transmission system described herein may include planning equipment or a planning server, wherein the planning server may include a cloud server or a local server, and the embodiments of the present invention are not limited thereto. Figure 9 As shown, the apparatus for the network planning of this ultra-long-span marine optical transmission system may include:

[0180] The acquisition module 301 is used to acquire multiple target influencing factors of the marine optical transmission system.

[0181] Analysis module 302 is used to perform correlation analysis on each target influencing factor to obtain the correlation analysis results of each target influencing factor. The correlation analysis results are used to represent the correlation between the target influencing factor and the optical cable parameters of the optical transmission link.

[0182] Analysis module 302 is also used to perform superimposed linear fitting analysis on the correlation analysis results of all target influencing factors to obtain superimposed linear fitting analysis results.

[0183] The planning module 303 is used to plan the optical transmission links of the marine optical transmission system based on the superimposed linear fitting analysis results, so as to determine the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment.

[0184] As can be seen, the device for planning the ultra-long span marine optical transmission system network described in the embodiments of the present invention can perform correlation analysis on the target influencing factors of the acquired marine optical transmission system, obtain the correlation analysis results, and perform superimposed linear fitting analysis on the correlation analysis results to obtain superimposed linear fitting analysis results. By superimposing the linear fitting analysis results, the accuracy of determining the target number of optical amplifier segments and the target optical cable length in the optical transmission link can be improved, reducing the loss of optical transmission performance of the marine optical transmission system, thereby helping to improve the optical transmission performance of the marine optical transmission system.

[0185] In an optional embodiment, the results of the superimposed linear fitting analysis are used to represent the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible fiber optic cable length for each optical amplifier segment. For example... Figure 10 As shown, the analysis module 302 may include:

[0186] The determination submodule 3021 is used to determine the degree of influence of each target influencing factor in the optical transmission link based on the correlation analysis results of each target influencing factor;

[0187] The determination submodule 3021 is also used to determine the demand range of each target influencing factor based on the pre-determined system commissioning requirements and the degree of influence of each target influencing factor in the optical transmission link. The demand range includes multiple values, and any one of the multiple values ​​is between the maximum demand value and the minimum demand value. The maximum demand value and the minimum demand value are determined when the target influencing factor meets the system commissioning requirements.

[0188] The fitting submodule 3022 is used to perform linear fitting on the optical cable parameters of the optical transmission link according to the demand range of each target influencing factor, and obtain at least one relationship curve corresponding to each target influencing factor. The relationship curve is used to represent the relationship between the target influencing factor and the optical cable parameters of the optical transmission link.

[0189] The determination submodule 3021 is also used to determine the maximum allowable number of optical amplifier segments in the optical transmission link and the maximum allowable value of the optical cable length of each optical amplifier segment based on all the relationship curves corresponding to each target influencing factor among all target influencing factors.

[0190] As can be seen, this optional embodiment can accurately determine the demand range of the target influencing factors based on the degree of influence of the accurately determined target influencing factors in the optical transmission link and the pre-determined system commissioning requirements. It also performs linear fitting on the accurately determined demand range, which improves the accuracy of determining the relationship curves corresponding to the target influencing factors. Through all relationship curves, it can improve the accuracy and reliability of determining the maximum allowable number of optical amplifier sections and the maximum allowable value of optical cable length in the optical transmission link.

[0191] In an optional embodiment, the planning module 303 plans the optical transmission links of the marine optical transmission system based on the results of superimposed linear fitting analysis. Specifically, the method for determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length for each segment may include:

[0192] Based on the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment, determine the first number of optical amplifier segments in the optical transmission link and the first length of optical cable for each optical amplifier segment. The first number of optical amplifier segments is less than or equal to the maximum permissible number of optical amplifier segments and the first length of optical cable is less than or equal to the maximum permissible length of optical cable for the corresponding optical amplifier segment.

[0193] The output receiving power of the optical transmission link is determined based on the first number of optical amplifier segments in the optical transmission link and the first optical cable length of each optical amplifier segment.

[0194] Based on the output power of the optical transmission link and the predetermined effective conditions for optical path transmission, determine the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment.

[0195] As can be seen, this optional embodiment can accurately determine the output receiving power of the optical transmission link based on the determined number of candidate optical amplifier segments and the candidate optical cable length, and improve the accuracy and reliability of determining the target number of optical amplifier segments and the target optical cable length based on the accurately determined output receiving power and the pre-determined effective optical path transmission conditions.

[0196] In this optional embodiment, as an optional implementation, the planning module 303 determines the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the output receiving power of the optical transmission link and the pre-determined effective conditions for optical path transmission. Specifically, this may include:

[0197] Determine whether the output power of the optical transmission link meets the predetermined effective conditions for optical path transmission.

[0198] If it is determined that the received power at the output end of the optical transmission link meets the effective conditions for optical path transmission, then the first number of optical amplifier sections is determined as the target number of optical amplifier sections, and the first optical cable length of the optical amplifier sections is determined as the target optical cable length of the optical amplifier sections; and / or,

[0199] If it is determined that the output receiving power of the optical transmission link does not meet the effective conditions for optical path transmission, the optical transmission link of the marine optical transmission system is replanned to obtain the replanning result. Based on the replanning result, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined. The replanning result is used to indicate that the output receiving power determined based on the replanned number of optical amplifier segments and the optical cable length of the optical amplifier segments meets the effective conditions for optical path transmission.

[0200] As can be seen, this optional implementation can accurately determine the received power at the output end, obtain the determination result, and improve the accuracy of planning the optical transmission link based on the determination result, thereby helping to improve the accuracy of determining the target number of optical amplifier sections and the target optical cable length.

[0201] In this optional implementation, the replanning result may include a first type of information and a second type of information. The first type of information may be empty or may include a second number obtained after adjusting the first number of optical amplifier segments. The second type of information may be empty or may include a second optical cable length of the target optical amplifier segment obtained after adjusting the first optical cable length of the target optical amplifier segment. The target optical amplifier segment is at least one of all optical amplifier segments, and the first type of information and the second type of information may not be empty simultaneously. The planning module 303 determines the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the replanning result. Specifically, this may include:

[0202] When the first type of information is empty, the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment. The first optical cable length of the remaining optical amplifier segments (excluding the target optical amplifier segment) is determined as the target optical cable length of the remaining optical amplifier segments; and / or,

[0203] When the second type of information is empty, the second quantity of the optical amplifier section is determined as the target quantity of the optical amplifier section, and the first optical cable length of the optical amplifier section is determined as the target optical cable length of the optical amplifier section; and / or,

[0204] When neither the first type of information nor the second type of information is empty, the second quantity of optical amplifier segments is determined as the target quantity of optical amplifier segments, the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment, and the first optical cable length of the remaining optical amplifier segments other than the target optical amplifier segment is determined as the target optical cable length of the remaining optical amplifier segments.

[0205] It is evident that this optional implementation can also improve the accuracy and diversity of optical transmission link replanning by using the first and second types of information contained in the determined replanning results when the optical transmission link needs to be replanned. This is beneficial to improving the accuracy and diversity of determining the target number of optical amplifier segments and the target optical cable length.

[0206] In an optional embodiment, the target influencing factors may include at least one of the following: factors affecting optical signal transmission impairment in marine optical transmission systems, factors affecting nonlinear effects in marine optical transmission systems, and factors affecting network node effects in marine optical transmission systems.

[0207] Among them, the factors affecting optical signal transmission impairment may include at least one of the following: optical signal-to-noise ratio of the marine optical transmission system, chromatic dispersion of the marine optical transmission system, spontaneous emission noise of the marine optical transmission system, and polarization mode dispersion of the marine optical transmission system; the factors affecting nonlinear effects may include at least one of the following: self-phase modulation of the marine optical transmission system, cross-phase modulation of the marine optical transmission system, and four-wave mixing of the marine optical transmission system; the factors affecting network node effects may include the insertion loss of filters in the marine optical transmission system.

[0208] The optical cable parameters in an optical transmission link may include at least one of the following: the number of optical amplifier segments in the optical transmission link, the optical cable length of each optical amplifier segment in the optical transmission link, the input fiber power of the optical transmission link, the OA noise figure of each optical amplifier in the optical transmission link, the input optical power of each optical amplifier in the optical transmission link, the optical cable attenuation coefficient of the optical transmission link, the dispersion coefficient of the optical transmission link, the transmission capacity of the optical transmission link, the optical frequency of the optical transmission link, and the reference bandwidth of the optical transmission link.

[0209] As can be seen, this optional embodiment can analyze diverse target influencing factors and optical cable parameters, improving the diversity and reliability of determining the number of targets and the length of target optical cables in the optical amplifier section.

[0210] In an optional embodiment, the method by which the acquisition module 301 acquires multiple target influencing factors of the ocean optical transmission system may specifically include:

[0211] Obtain the initial set of influencing factors for the marine optical transmission system. The initial set of influencing factors includes multiple initial influencing factors.

[0212] Determine the degree of optical path transmission performance loss caused by each initial influencing factor to the marine optical transmission system, and obtain the degree of optical path transmission performance loss corresponding to each initial influencing factor;

[0213] Determine whether the degree of optical path transmission performance loss corresponding to the initial influencing factors is greater than or equal to the predetermined degree of optical path transmission performance loss.

[0214] If it is determined that the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the degree of optical path transmission performance loss, then the initial influencing factor is determined as the target influencing factor.

[0215] As can be seen, this optional embodiment can accurately screen out the target influencing factors that cause significant loss of ground optical path transmission performance in the marine optical transmission system from multiple initial influencing factors, thereby improving the accuracy of identifying the target influencing factors.

[0216] Example 4

[0217] Please see Figure 11 , Figure 11 This is a schematic diagram of the structure of a device for planning the networking of an ultra-long-span marine optical transmission system, as disclosed in an embodiment of the present invention. Figure 11 As shown, the apparatus for the network planning of this ultra-long-span marine optical transmission system may include:

[0218] Memory 401 storing executable program code;

[0219] Processor 402 coupled to memory 401;

[0220] The processor 402 calls the executable program code stored in the memory 401 to execute the steps in the method for planning the networking of ultra-long span marine optical transmission systems described in Embodiment 1 or Embodiment 2 of the present invention.

[0221] Example 5

[0222] This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute the steps in the method for planning the networking of an ultra-long-span marine optical transmission system as described in Embodiment 1 or Embodiment 2 of this invention.

[0223] Example 6

[0224] This invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps in the method for planning the networking of an ultra-long-distance marine optical transmission system described in Embodiment 1 or Embodiment 2.

[0225] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0226] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0227] Finally, it should be noted that the method and apparatus for planning a network of ultra-long-span marine optical transmission systems disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for planning the networking of an ultra-long-distance marine optical transmission system, characterized in that, The marine optical transmission system includes an optical transmission link, and the method includes: Obtain multiple target influencing factors of the aforementioned marine optical transmission system; A correlation analysis is performed on each of the target influencing factors to obtain the correlation analysis results for each target influencing factor. The correlation analysis results are used to represent the correlation between the target influencing factor and the optical cable parameters of the optical transmission link. The correlation analysis results of all the target influencing factors were subjected to superimposed linear fitting analysis to obtain the superimposed linear fitting analysis results; Based on the superimposed linear fitting analysis results, the optical transmission links of the marine optical transmission system are planned to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

2. The method for planning the networking of an ultra-long-span marine optical transmission system according to claim 1, characterized in that, The superimposed linear fitting analysis results are used to represent the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible optical cable length of each optical amplifier segment; The correlation analysis results of all the target influencing factors are superimposed with linear fitting analysis to obtain the superimposed linear fitting analysis results, including: Based on the correlation analysis results of each of the target influencing factors, the degree of influence of each of the target influencing factors in the optical transmission link is determined; Based on the predetermined system activation requirements and the degree of influence of each target influencing factor in the optical transmission link, the demand range of each target influencing factor is determined. The demand range includes multiple values, and any one of the multiple values ​​is between the maximum demand value and the minimum demand value. The maximum demand value and the minimum demand value are determined when the target influencing factor meets the system activation requirements. Based on the demand range of each of the target influencing factors, the optical cable parameters of the optical transmission link are linearly fitted to obtain at least one relationship curve corresponding to each of the target influencing factors. The relationship curve is used to represent the relationship between the target influencing factors and the optical cable parameters of the optical transmission link. Based on all the relationship curves corresponding to each of the target influencing factors, determine the maximum allowable number of optical amplifier segments in the optical transmission link and the maximum allowable optical cable length of each optical amplifier segment.

3. The method for planning the networking of an ultra-long-span marine optical transmission system according to claim 2, characterized in that, The step of planning the optical transmission links of the marine optical transmission system based on the superimposed linear fitting analysis results, to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment, includes: Based on the maximum permissible number of optical amplifier segments in the optical transmission link and the maximum permissible length of optical cable for each optical amplifier segment, a first number of optical amplifier segments and a first optical cable length for each optical amplifier segment are determined. The first number of optical amplifier segments is less than or equal to the maximum permissible number of optical amplifier segments and the first optical cable length is less than or equal to the maximum permissible length of optical cable for the corresponding optical amplifier segment. The output receiving power of the optical transmission link is determined based on the first number of optical amplifier segments in the optical transmission link and the first optical cable length of each optical amplifier segment. Based on the output power of the optical transmission link and the predetermined effective conditions for optical path transmission, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined.

4. The method for planning the networking of an ultra-long-span marine optical transmission system according to claim 3, characterized in that, The step of determining the target number of optical amplifier segments and the target optical cable length of each optical amplifier segment in the optical transmission link based on the output receiving power of the optical transmission link and the pre-determined effective conditions for optical path transmission includes: Determine whether the output power of the optical transmission link meets the predetermined effective conditions for optical path transmission. If it is determined that the output power of the optical transmission link meets the effective conditions for optical path transmission, then the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the first optical cable length of the optical amplifier segments is determined as the target optical cable length of the optical amplifier segments; and / or, If it is determined that the output receiving power of the optical transmission link does not meet the effective conditions for optical path transmission, the optical transmission link of the marine optical transmission system is replanned to obtain the replanning result. Based on the replanning result, the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment are determined. The replanning result is used to indicate that the output receiving power determined based on the replanned number of optical amplifier segments and the optical cable length of the optical amplifier segments meets the effective conditions for optical path transmission.

5. The method for planning the networking of an ultra-long-span marine optical transmission system according to claim 4, characterized in that, The replanning result includes a first type of information and a second type of information. The first type of information is empty or includes a second quantity obtained after adjusting the first quantity of the optical amplifier segments. The second type of information is empty or includes a second optical cable length of the target optical amplifier segment obtained after adjusting the first optical cable length of the target optical amplifier segment. The target optical amplifier segment is at least one of all the optical amplifier segments, and the first type of information and the second type of information are not both empty at the same time. The step of determining the target number of optical amplifier segments in the optical transmission link and the target optical cable length of each optical amplifier segment based on the replanning results includes: When the first type of information is empty, the first number of optical amplifier segments is determined as the target number of optical amplifier segments, and the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment. The first optical cable length of the remaining optical amplifier segments (excluding the target optical amplifier segment) is determined as the target optical cable length of the remaining optical amplifier segments; and / or, When the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, and the first optical cable length of the optical amplifier segment is determined as the target optical cable length of the optical amplifier segment; and / or, When neither the first type of information nor the second type of information is empty, the second quantity of the optical amplifier segment is determined as the target quantity of the optical amplifier segment, the second optical cable length of the target optical amplifier segment is determined as the target optical cable length of the target optical amplifier segment, and the first optical cable length of the remaining optical amplifier segments other than the target optical amplifier segment is determined as the target optical cable length of the remaining optical amplifier segments.

6. The method for planning the networking of ultra-long-span marine optical transmission systems according to any one of claims 1-5, characterized in that, The target influencing factors include at least one of the following: factors affecting optical signal transmission impairment in the marine optical transmission system, factors affecting nonlinear effects in the marine optical transmission system, and factors affecting network node effects in the marine optical transmission system. The factors influencing the optical signal transmission impairment include at least one of the following: optical signal-to-noise ratio of the marine optical transmission system, chromatic dispersion of the marine optical transmission system, spontaneous emission noise of the marine optical transmission system, and polarization mode dispersion of the marine optical transmission system; the factors influencing the nonlinear effects include at least one of the following: self-phase modulation of the marine optical transmission system, cross-phase modulation of the marine optical transmission system, and four-wave mixing of the marine optical transmission system; the factors influencing the network node effects include the insertion loss of the filters in the marine optical transmission system. The optical cable parameters in the optical transmission link include at least one of the following: the number of optical amplifier segments in the optical transmission link, the optical cable length of each optical amplifier segment in the optical transmission link, the input power of the optical transmission link, the OA noise figure of each optical amplifier in the optical transmission link, the input optical power of each optical amplifier in the optical transmission link, the optical cable attenuation coefficient of the optical transmission link, the dispersion coefficient of the optical transmission link, the transmission capacity of the optical transmission link, the optical frequency of the optical transmission link, and the reference bandwidth of the optical transmission link.

7. The method for planning the networking of ultra-long-span marine optical transmission systems according to any one of claims 1-5, characterized in that, The acquisition of multiple target influencing factors of the marine optical transmission system includes: Obtain the initial set of influencing factors for the marine optical transmission system, wherein the initial set of influencing factors includes multiple initial influencing factors; Determine the degree of optical path transmission performance loss caused by each of the initial influencing factors to the marine optical transmission system, and obtain the degree of optical path transmission performance loss corresponding to each of the initial influencing factors; Determine whether the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the predetermined degree of optical path transmission performance loss. If it is determined that the degree of optical path transmission performance loss corresponding to the initial influencing factor is greater than or equal to the degree of optical path transmission performance loss, then the initial influencing factor is determined as the target influencing factor.

8. A device for planning the networking of an ultra-long-distance marine optical transmission system, characterized in that, The marine optical transmission system includes an optical transmission link, and the device includes: The acquisition module is used to acquire multiple target influencing factors of the marine optical transmission system; An analysis module is used to perform correlation analysis on each of the target influencing factors to obtain the correlation analysis results of each of the target influencing factors. The correlation analysis results are used to represent the correlation between the target influencing factors and the optical cable parameters of the optical transmission link. The analysis module is also used to perform superimposed linear fitting analysis on the correlation analysis results of all the target influencing factors to obtain superimposed linear fitting analysis results; The planning module is used to plan the optical transmission links of the marine optical transmission system based on the superimposed linear fitting analysis results, so as to determine the target number of optical amplifier segments in the optical transmission links and the target optical cable length of each optical amplifier segment.

9. A device for planning the networking of an ultra-long-distance marine optical transmission system, characterized in that, The device includes: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the method for planning the networking of an ultra-long-span marine optical transmission system as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer instructions, which, when invoked, are used to execute the method for planning the networking of an ultra-long-span marine optical transmission system as described in any one of claims 1-7.

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