Wavelength and networking arrangement method and device for parallel optical modules and medium

Abstract

The invention provides a wavelength and networking arrangement method and device for parallel optical modules and a medium, and relates to the technical field of optical communication, and the method comprises the steps: numbering n optical modules in a parallel optical module networking model according to the sequence of sending wavelengths from short to long; the sending wavelength of the optical module with the odd number in the n optical modules is set to be lambda i, and the sending wavelength of the optical module with the even number in the n optical modules is set to be lambda j; the receiving wavelength of the optical module with the odd number in the n optical modules is set to be lambda i + 1, and the receiving wavelength of the optical module with the even number in the n optical modules is set to be lambda j-1; during networking, the optical modules are used according to the principle that the optical modules with odd numbers are paired with the adjacent optical modules with even numbers larger than 1. According to the method, the device and the medium, the problems of high process difficulty, low yield, large insertion loss and high cost caused by the fact that a TFF filter in a parallel optical assembly is required to only support an optical signal with a certain specific wavelength to pass through although an existing parallel optical module is relatively flexible in networking can be solved.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to a wavelength and networking arrangement method, device and medium for a parallel optical module. Background Art

[0002] In order to reduce the complexity of wireless fronthaul technology solutions and reduce the difficulty of maintenance and management, the industry has proposed a parallel optical module solution. Figure 1 As shown, the parallel optical module includes two optical interfaces, an optical uplink port and an optical downlink port. It can directly send the optical signal of the wavelength sent by this module to the optical uplink port, filter out the optical signal that matches the wavelength received by this module from the optical uplink port and directly send it to the optical receiving unit of this module, and forward the optical signal of the remaining wavelength to the optical downlink port, and directly forward the optical signal received by the optical downlink port to the optical uplink port. The above functions of the parallel optical module are mainly realized by the wavelength division multiplexing and demultiplexing components in its parallel optical components. The basic structure of the parallel optical components is shown in Figure 2 As shown, its wavelength division multiplexing and demultiplexing components are realized by combining two groups of TFF (Thin-Film Filter) filters that have the function of filtering the transmission wavelength and receiving wavelength of this module respectively. The transmission wavelength and receiving wavelength of the parallel optical module are different. When used in networking, it is divided into a head-end optical module and a tail-end optical module, and the head-end optical module and the tail-end optical module are used in pairs. The transmission wavelength of the paired optical module head-end module is consistent with the receiving wavelength of the tail-end module, and the receiving wavelength of the head-end module is consistent with the transmission wavelength of the tail-end module. A group of paired head-end optical modules and tail-end optical modules can be networked, or multiple groups of paired head-end optical modules and tail-end optical modules can be networked.

[0003] Since the relevant functions of controlling the transmission direction of optical signals in the parallel optical module are realized through the passive devices of the parallel optical components in the parallel optical module, the operating failure of this module does not affect the normal transmission of the downstream module signal and does not change the transmission rate of the original optical interface signal. When applied to wireless fronthaul, there is no need to add additional equipment, no additional fault nodes, no problems of climbing and maintenance interface division, and the fiber core occupied by the fronthaul can be reduced to 1 core, solving various problems existing in various wireless fronthaul technologies in the existing network.

[0004] With the current technical solution, when parallel optical modules are networked, as long as the transmitting wavelength of the paired head-end module is consistent with the receiving wavelength of the tail-end module, and the receiving wavelength of the head-end module is consistent with the transmitting wavelength of the tail-end module, and multiple sets of paired head-end and tail-end optical modules are networked, the working wavelengths of all optical modules do not conflict. There are no requirements for the selection of the transmitting wavelength and the receiving wavelength of the optical module, and the order of the paired optical modules within the head and tail ends, and they can be flexibly selected and sorted.

[0005] However, although this method is more flexible in networking, it requires that the TFF filters in the parallel optical components only support the passage of optical signals of a specific wavelength. This requires that each TFF filter be designed as a bandpass filter. Bandpass filters are usually composed of different long-wave pass filters. Due to the increase in the number of thin film stacking layers, the product development and production process will be difficult and the yield rate will be low, which will lead to large insertion loss and high cost of the products produced, which is not conducive to the promotion and application of the products. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a wavelength and networking arrangement method, device and medium for a parallel optical module in view of the above-mentioned deficiencies in the prior art, so as to solve the problem that although the existing parallel optical modules are more flexible in networking, the TFF filters in the parallel optical components are required to only support the passage of optical signals of a certain specific wavelength, which easily leads to high process difficulty, low yield, large insertion loss and high cost.

[0007] In a first aspect, the present invention provides a wavelength and networking arrangement method for a parallel optical module, the method comprising:

[0008] Number the n optical modules in the parallel optical module networking model in the order of the transmission wavelength from short to long, where n is an even number;

[0009] Suppose the transmission wavelength of the odd-numbered optical modules among the n optical modules is λi, and the transmission wavelength of the even-numbered optical modules is λj;

[0010] Assume that the receiving wavelength of the odd-numbered optical modules among the n optical modules is λi+1, and the receiving wavelength of the even-numbered optical modules is λj-1;

[0011] When networking, pair the odd-numbered optical modules with the adjacent even-numbered optical modules whose numbers are greater than 1.

[0012] In networking, odd-numbered optical modules and even-numbered optical modules are networked according to the networking model, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end, and if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and there are n / 2 optical modules at the head end and the tail end respectively.

[0013] Furthermore, the n optical modules in the parallel optical module networking model are numbered in order of the transmission wavelength from short to long, specifically including:

[0014] Assume that the parallel optical module networking model has a total of n optical modules, and a total of n transmission wavelengths are required;

[0015] Assume that the transmission wavelengths of n optical modules are arranged from short to long in order from λ1 to λn, and the corresponding optical modules are numbered from optical module 1 to optical module n.

[0016] Further, networking the odd-numbered optical modules and the even-numbered optical modules according to the networking model specifically includes:

[0017] According to the first networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large, and the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small; or,

[0018] According to the second networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small, while the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large;

[0019] Among them, the optical uplink port of the first-level optical module at the head end participating in the networking is interconnected with the optical uplink port of the first-level optical module at the tail end participating in the networking through a single-core optical cable core. Except for the first-level optical module, when the optical modules at the head end and the tail end participating in the networking are interconnected, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through an optical jumper fiber.

[0020] Further, if the number of optical modules actually involved in the networking application is less than n / 2 pairs, the optical modules with odd numbers are networked in ascending order of numbers or transmission wavelengths according to the first networking model, while the optical modules with even numbers are networked in descending order of numbers or transmission wavelengths, specifically including:

[0021] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the first networking model;

[0022] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the first networking model.

[0023] Further, if the number of optical modules actually involved in the networking application is less than n / 2 pairs, the optical modules with odd numbers are networked in the order of numbers or transmission wavelengths from large to small according to the second networking model, and the optical modules with even numbers are networked in the order of numbers or transmission wavelengths from small to large, specifically including:

[0024] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the second networking model;

[0025] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the second networking model.

[0026] Furthermore, the method further comprises:

[0027] When designing the parallel optical components of the parallel optical module, a two-stage long-wave pass thin film filter TFF filtering structure is adopted, wherein the first stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength from the optical signal received from the optical uplink port, and the total reflection of the optical signal received at the optical downlink port, and the second stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength optical signal.

[0028] Further, if the networking model is the first networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cutoff wavelength of the first-stage TFF filtering is designed between λi+1 and λi+2, and the cutoff wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cutoff wavelength of the first-stage TFF filtering is designed between λj-1 and λj-2, and the cutoff wavelength of the second-stage TFF filtering is designed between λj and λj-1;

[0029] If the networking model is the second networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi and λi-1, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj and λj+1, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1.

[0030] In a second aspect, the present invention provides a wavelength and networking arrangement device for a parallel optical module, the device comprising:

[0031] An optical module numbering module is used to number n optical modules in a parallel optical module networking model in order of transmission wavelength from short to long, where n is an even number;

[0032] A transmission wavelength setting module, connected to the optical module numbering module, used to set the transmission wavelength of the optical modules with odd numbers among the n optical modules to λi and the transmission wavelength of the optical modules with even numbers to λj;

[0033] A receiving wavelength setting module, connected to the transmitting wavelength setting module, used to set the receiving wavelength of the odd-numbered optical modules among the n optical modules to λi+1 and the receiving wavelength of the even-numbered optical modules to λj-1;

[0034] An optical module pairing module, connected to the receiving wavelength setting module, is used for pairing an odd-numbered optical module with an adjacent even-numbered optical module whose number is greater than 1 when networking;

[0035] The networking arrangement module is connected to the optical module pairing module and is used to network the odd-numbered optical modules and the even-numbered optical modules according to the networking model in the networking, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end; if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and the head end and the tail end each have n / 2 optical modules.

[0036] In a third aspect, the present invention provides a wavelength and networking arrangement device for a parallel optical module, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to implement the wavelength and networking arrangement method for the parallel optical module described in the first aspect above.

[0037] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the wavelength and networking arrangement method of the parallel optical module described in the first aspect above is implemented.

[0038] The wavelength and networking arrangement method, device and medium of parallel optical modules provided by the present invention. First, the n optical modules in the networking model of parallel optical modules are numbered in the order of the transmission wavelength from short to long; then the transmission wavelength of the optical modules with odd numbers among the n optical modules is set to λi, and the transmission wavelength of the optical modules with even numbers is set to λj; and the receiving wavelength of the optical modules with odd numbers among the n optical modules is set to λi+1, and the receiving wavelength of the optical modules with even numbers is set to λj-1; then, when networking, the optical modules with odd numbers are used in pairs according to the principle of pairing the adjacent optical modules with even numbers greater than 1; finally, in networking, the optical modules with odd numbers and the optical modules with even numbers are networked according to the networking model, wherein, if the optical modules with odd numbers are at the head end, the optical modules with even numbers are at the tail end, and if the optical modules with odd numbers are at the tail end, the optical modules with even numbers are at the head end, and there are n / 2 optical modules at the head end and the tail end respectively. The present invention arranges the transmission wavelength and receiving wavelength of each optical module in the networking model, as well as the networking order, so that each TFF filter in the parallel optical component can be designed as a long-wave pass filter with lower process complexity, cost and insertion loss, and realizes the effective control of the transmission direction of the optical signal by the parallel optical module, thereby effectively reducing the process difficulty of the product in development and production, improving the product yield, reducing insertion loss, and reducing production costs. At the same time, the design improves product performance and facilitates application and promotion. It solves the problem that although the existing parallel optical module is more flexible in networking, it requires the TFF filter in the parallel optical component to only support the passage of optical signals of a certain specific wavelength, which easily leads to high process difficulty, low yield, large insertion loss and high cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of an existing parallel optical module;

[0040] Figure 2 It is a structural schematic diagram of an existing parallel optical component;

[0041] Figure 3 This is a flow chart of a wavelength and networking arrangement method for a parallel optical module according to Embodiment 1 of the present invention;

[0042] Figure 4 This is a first schematic diagram of the wavelength and networking arrangement method of the parallel optical module according to Embodiment 1 of the present invention;

[0043] Figure 5 A second schematic diagram of the wavelength and networking arrangement method of the parallel optical module according to Embodiment 1 of the present invention;

[0044] Figure 6 A third schematic diagram of the wavelength and networking arrangement method of the parallel optical module according to Embodiment 1 of the present invention;

[0045] Figure 7 A fourth schematic diagram of the wavelength and networking arrangement method of the parallel optical module according to Embodiment 1 of the present invention;

[0046] Figure 8 A first schematic diagram of a networking arrangement of six parallel optical modules according to Embodiment 1 of the present invention;

[0047] Fig. 9 A second schematic diagram of the networking arrangement of six parallel optical modules according to Embodiment 1 of the present invention;

[0048] Fig.10 A third schematic diagram of the networking arrangement of six parallel optical modules according to Embodiment 1 of the present invention;

[0049] Fig.11 A fourth schematic diagram of the networking arrangement of six parallel optical modules according to Embodiment 1 of the present invention;

[0050] Fig.12 This is a basic structural diagram of a parallel optical component structural model 1 of Example 1 of the present invention (when the optical module number is an odd number);

[0051] Fig.13 This is a basic structural diagram of a parallel optical component structural model 1 of Example 1 of the present invention (when the optical module number is an even number);

[0052] Fig.14 This is a basic structural diagram of the parallel optical component structural model 2 of Example 1 of the present invention (when the optical module number is an odd number);

[0053] Fig.15 This is a basic structural diagram of the parallel optical component structural model 2 of Example 1 of the present invention (when the optical module number is an even number);

[0054] Fig.16 A schematic diagram of the structure of a wavelength and networking arrangement device of a parallel optical module according to embodiment 2 of the present invention;

[0055] Fig.17 This is a schematic diagram of the structure of a wavelength and networking arrangement device of a parallel optical module according to Example 3 of the present invention. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the technical solution of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] It should be understood that the specific embodiments and drawings described herein are only used to explain the present invention rather than to limit the present invention.

[0058] It can be understood that, in the absence of conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other.

[0059] It can be understood that, for the convenience of description, the drawings of the present invention only show the parts related to the present invention, while the parts irrelevant to the present invention are not shown in the drawings.

[0060] It can be understood that the terms "first", "second", etc. in the embodiments of the present invention are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0061] It can be understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of the present invention may occur in an order different from that marked in the drawings.

[0062] It can be understood that the units and modules involved in the embodiments of the present invention can be implemented by software or hardware. For example, the units and modules can be located in a processor.

[0063] Application Overview

[0064] In the current technical solution, when the parallel optical modules are networked, as long as the transmission wavelength of the head-end module in the paired optical modules is consistent with the receiving wavelength of the tail-end module, and the receiving wavelength of the head-end module is consistent with the transmission wavelength of the tail-end module, when multiple sets of paired head-end and tail-end optical modules are networked, the working wavelengths of all optical modules do not conflict. There are no requirements for the selection of the transmission wavelength and the receiving wavelength of the optical modules, and the order of the paired optical modules in the head and tail ends, and they can be flexibly selected and sorted. Figure 2 For example, when the transmission wavelength and receiving wavelength of the head-end module are λa and λi respectively, the transmission wavelength and receiving wavelength of the matching tail-end module should be λi and λa respectively. When multiple groups of paired head-end and tail-end optical modules are networked, λa, λb, λc..., and λi, λj, λk... are all different, and there is no requirement for λa, λb, λc..., and λi, λj, λk... to be arranged in a certain order. However, this requires that each TFF filter in the parallel optical component be designed as a bandpass filter during product development, which will lead to increased insertion loss and cost.

[0065] In response to the above technical problems, the idea of ​​the present application is to provide a wavelength and networking arrangement method, device and medium for a parallel optical module. By arranging the transmitting wavelength and receiving wavelength of each optical module in the networking model, as well as the networking order, each TFF filter in the parallel optical component can be designed as a long-wave pass filter with lower process complexity, cost and insertion loss, and the parallel optical module can effectively control the direction of optical signal transmission, thereby effectively reducing the process difficulty of the product in development and production, improving the product yield, reducing insertion loss, and reducing production costs.

[0066] After introducing the basic principles of the present application, various non-limiting embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0067] Embodiment 1:

[0068] This embodiment provides a wavelength and networking arrangement method for a parallel optical module, such as Figure 3 As shown, the method includes:

[0069] Step S101: numbering n optical modules in a parallel optical module networking model in order of transmission wavelength from short to long, where n is an even number.

[0070] In this embodiment, it is assumed that the parallel optical module networking model has a total of n optical modules, and a total of n transmission wavelengths are required; it is assumed that the transmission wavelengths of the n optical modules are arranged from short to long in order from λ1 to λn, and the corresponding optical module numbers are optical module 1 to optical module n.

[0071] Step S102: Assume that the transmission wavelength of the optical modules with odd numbers among the n optical modules is λi, and the transmission wavelength of the optical modules with even numbers is λj;

[0072] Step S103: Assume that the receiving wavelength of the odd-numbered optical modules among the n optical modules is λi+1, and the receiving wavelength of the even-numbered optical modules is λj-1;

[0073] In this embodiment, the transmission wavelength of the optical module with an odd number is λi, and the transmission wavelength of the optical module with an even number is λj, then the receiving wavelength of the optical module with an odd number is selected as λi+1, and the receiving wavelength of the optical module with an even number is selected as λj-1. That is, for optical module 1, optical module 2...optical module n, their transmission wavelengths are λ1, λ2...λn respectively, and their receiving wavelengths are selected as λ2, λ1, λ4, λ3...λn, λn-1 respectively.

[0074] Step S104: When networking, the odd-numbered optical modules are paired with adjacent even-numbered optical modules whose numbers are greater than 1.

[0075] In this embodiment, when networking, the odd-numbered optical modules are paired with the adjacent even-numbered optical modules whose numbers are greater than 1, that is, optical module 1 is paired with optical module 2, optical module 3 is paired with optical module 4, and optical module n-1 is paired with optical module n, forming a total of n / 2 pairs of paired optical modules. If the optical module number is an odd number i, then optical module i should be paired with optical module i+1; if the optical module number is an even number j, then optical module j should be paired with optical module j-1.

[0076] Step S105: In networking, the odd-numbered optical modules and the even-numbered optical modules are networked according to the networking model, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end, and if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and there are n / 2 optical modules at the head end and the tail end respectively.

[0077] In this embodiment, the networking model is used when one side of the odd / even-numbered optical modules is networked in order from small to large, and the other side is networked in order from large to small. In the networking, the odd-numbered optical modules can be used at the head end and the even-numbered optical modules can be used at the tail end, that is, optical module 1, optical module 3...optical module n-1 are used at the head end, and optical module 2, optical module 4...optical module n are used at the tail end; the even-numbered optical modules can also be used at the head end and the odd-numbered optical modules are used at the tail end, that is, optical module 2, optical module 4...optical module n are used at the head end, and optical module 1, optical module 3...optical module n-1 are used at the tail end.

[0078] Optionally, networking the odd-numbered optical modules and the even-numbered optical modules according to the networking model specifically includes:

[0079] According to the first networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large, and the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small; or,

[0080] According to the second networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small, while the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large;

[0081] Among them, the optical uplink port of the first-level optical module at the head end participating in the networking is interconnected with the optical uplink port of the first-level optical module at the tail end participating in the networking through a single-core optical cable core. Except for the first-level optical module, when the optical modules at the head end and the tail end participating in the networking are interconnected, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through an optical jumper fiber.

[0082] Specifically, in the first networking model, for odd-numbered optical modules, the arrangement order is optical module 1, optical module 3, ... optical module n-1, that is, the optical modules are arranged in order from short to long (that is, from small to large) according to their transmission wavelengths. For even-numbered optical modules, the arrangement order is optical module n, optical module n-2, ... optical module 2, that is, the optical modules are arranged in order from long to short (that is, from large to small) according to their transmission wavelengths.

[0083] Specifically, in the second networking model, for odd-numbered optical modules, the arrangement order is optical module n-1, optical module n-3, ... optical module 1, that is, the optical modules are arranged in order from long to short according to their transmission wavelengths. For even-numbered optical modules, the arrangement order is optical module 2, optical module 4, ... optical module n, that is, the optical modules are arranged in order from short to long according to their transmission wavelengths.

[0084] Optionally, if the number of optical modules actually involved in the networking application is less than n / 2 pairs, the optical modules with odd numbers are networked in ascending order of numbers or transmission wavelengths according to the first networking model, while the optical modules with even numbers are networked in descending order of numbers or transmission wavelengths, specifically including:

[0085] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the first networking model;

[0086] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the first networking model.

[0087] In this embodiment, under the first networking model, when the number of optical modules actually participating in the networking application is less than that in the standard model, that is, when the number of optical modules participating in the networking is less than n / 2 pairs, the networking arrangement method is as follows:

[0088] 1) For odd-numbered optical modules, excluding the optical modules that do not participate in the networking in the standard model, the remaining optical modules are still arranged in order from short to long according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through optical jumpers.

[0089] 2) For even-numbered optical modules, excluding the optical modules that do not participate in the networking in the standard model, the remaining optical modules are still arranged in order from long to short according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through optical jumpers.

[0090] 3) Excluding the optical modules that do not participate in the networking in the standard model, the optical uplink port of the first-level optical module at the head end participating in the networking and the optical uplink port of the first-level optical module at the tail end participating in the networking are interconnected through a single-core optical cable core.

[0091] Optionally, if the number of optical modules actually involved in the networking application is less than n / 2 pairs, the optical modules with odd numbers are networked in descending order of numbers or transmission wavelengths according to the second networking model, while the optical modules with even numbers are networked in descending order of numbers or transmission wavelengths, specifically including:

[0092] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the second networking model;

[0093] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the second networking model.

[0094] In this embodiment, under the second networking model, when the number of optical modules actually involved in the networking application is less than that in the standard model, that is, when the number of optical modules involved in the networking is less than n / 2 pairs, the networking arrangement method is as follows:

[0095] 1) For odd-numbered optical modules, excluding the optical modules that do not participate in the networking in the standard model, the remaining optical modules are still arranged in order from long to short according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through optical jumpers.

[0096] 2) For even-numbered optical modules, excluding the optical modules that do not participate in the networking in the standard model, the remaining optical modules are still arranged in order from short to long according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through optical jumper fibers.

[0097] 3) Excluding the optical modules that do not participate in the networking in the standard model, the optical uplink port of the first-level optical module at the head end participating in the networking and the optical uplink port of the first-level optical module at the tail end participating in the networking are interconnected through a single-core optical cable core.

[0098] Optionally, the method further comprises:

[0099] When designing the parallel optical components of the parallel optical module, a two-stage long-wave pass thin film filter TFF filtering structure is adopted, wherein the first stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength from the optical signal received from the optical uplink port, and the total reflection of the optical signal received at the optical downlink port, and the second stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength optical signal.

[0100] In this embodiment, according to the wavelength and networking arrangement method of the above-mentioned parallel optical module, the parallel optical component adopts a two-stage long-wave pass TFF filtering structure. The first-stage TFF filtering realizes the separation of the optical module's sending wavelength and receiving wavelength from the optical uplink port and the total reflection of the optical signal received at the optical downlink port. The second-stage TFF filtering realizes the separation of the optical module's sending wavelength and receiving wavelength optical signals.

[0101] Optionally, if the networking model is the first networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi+1 and λi+2, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj-1 and λj-2, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1;

[0102] If the networking model is the second networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi and λi-1, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj and λj+1, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1.

[0103] In this embodiment, there are two parallel optical component structure models, which are respectively applied to the first networking model and the second networking model.

[0104] Specifically, for the first networking model, the parallel optical component structure model is as follows: when the optical module is numbered as an odd number, its transmission wavelength is λi and its receiving wavelength is λi+1. The cutoff wavelength of the first-level TFF filter is designed to be between λi+1 and λi+2, so that all optical signals with incident wavelengths ≥λi+2 are transmitted and all optical signals with incident wavelengths ≤λi+1 are reflected; the cutoff wavelength of the second-level TFF filter is designed to be between λi and λi+1, so that all optical signals with received wavelengths of λi+1 are transmitted and all optical signals with transmitted wavelengths of λi are reflected. When the optical module is numbered as an even number, its transmission wavelength is λj and its receiving wavelength is λj-1. The cutoff wavelength of the first-stage TFF filter is designed to be between λj-1 and λj-2, so that all optical signals with incident wavelength ≥λj-1 are transmitted and all optical signals with incident wavelength ≤λj-2 are reflected; the cutoff wavelength of the second-stage TFF filter is designed to be between λj and λj-1, so that all optical signals with received wavelength of λj-1 are reflected and all optical signals with sent wavelength of λj are transmitted.

[0105] Specifically, for the second networking model, the parallel optical component structure model is as follows: when the optical module is numbered as an odd number, its transmission wavelength is λi and its receiving wavelength is λi+1. The cutoff wavelength of the first-level TFF filter is designed to be between λi and λi-1, so that all optical signals with incident wavelengths ≥λi are transmitted and all optical signals with incident wavelengths ≤λi-1 are reflected; the cutoff wavelength of the second-level TFF filter is designed to be between λi and λi+1, so that all optical signals with received wavelengths of λi+1 are transmitted and all optical signals with transmitted wavelengths of λi are reflected. When the optical module is numbered as an even number, its transmission wavelength is λj and its receiving wavelength is λj-1. The cutoff wavelength of the first-stage TFF filter is designed to be between λj and λj+1, so that all optical signals with incident wavelength ≥λj+1 are transmitted and all optical signals with incident wavelength ≤λj are reflected; the cutoff wavelength of the second-stage TFF filter is designed to be between λj and λj-1, so that all optical signals with received wavelength of λj-1 are reflected and all optical signals with sent wavelength of λj are transmitted.

[0106] In this embodiment, for the last-stage optical module in the two networking models of the present invention, the parallel optical component can cancel the second-stage TFF filtering in the above two parallel optical component structure models and only retain the first-stage TFF filtering.

[0107] It should be noted that, in order to address the problems of high process difficulty, low yield, large insertion loss and high cost caused by the original technical solution of parallel optical modules, the present invention arranges the sending wavelength and receiving wavelength of each optical module in the networking model, as well as the networking order, and realizes a method of controlling the transmission direction of optical signals according to the functional requirements of the parallel optical module by using a long-wave pass filter, thereby effectively reducing the process difficulty of the product in development and production, improving the product yield, reducing insertion loss, effectively reducing the product production cost, improving product performance, and facilitating the application and promotion of the product.

[0108] In a specific embodiment, a method for arranging the working wavelength and networking of the head-end and tail-end optical modules is provided, so that each TFF filter in the parallel optical component is designed as a long-wave pass filter with lower process complexity, cost and insertion loss, and the control function of the parallel optical module on the transmission direction of the optical signal is realized. The wavelength and networking arrangement method of the parallel optical module may include the following steps:

[0109] 1. Wavelength arrangement method

[0110] Assume that the parallel optical module networking model has a total of n optical modules (n is an even number), with n / 2 modules at the head end and n / 2 modules at the tail end, and a total of n optical wavelengths are required. Assume that the transmission wavelengths of the optical modules are λ1, λ2, ... λn in order from short to long, and the corresponding optical module numbers are optical module 1, optical module 2, ... optical module n, then Figure 4 and Figure 5 As shown, the wavelength arrangement method is as follows:

[0111] (1) Let the transmission wavelength of the odd-numbered optical module be λi and the transmission wavelength of the even-numbered optical module be λj. Then the receiving wavelength of the odd-numbered optical module is λi+1 and the receiving wavelength of the even-numbered optical module is λj-1. That is, for optical module 1, optical module 2, ... optical module n, their transmission wavelengths are λ1, λ2, ... λn, respectively, and their receiving wavelengths are λ2, λ1, λ4, λ3, ... λn, λn-1, respectively.

[0112] (2) When networking, the odd-numbered optical modules are paired with the adjacent even-numbered optical modules whose numbers are greater than 1. That is, optical module 1 is paired with optical module 2, optical module 3 is paired with optical module 4, and so on. Optical module n-1 is paired with optical module n, forming a total of n / 2 pairs of paired optical modules. If the optical module number is an odd number i, then optical module i should be paired with optical module i+1; if the optical module number is an even number j, then optical module j should be paired with optical module j-1.

[0113] (3) In networking, odd-numbered optical modules can be used at the headend and even-numbered optical modules can be used at the tailend, that is, optical module 1, optical module 3, ... optical module n-1 are used at the headend, and optical module 2, optical module 4, ... optical module n are used at the tailend. Figure 4 and Figure 6 As shown; even-numbered optical modules can also be used at the head end and odd-numbered optical modules can be used at the tail end, that is, optical module 2, optical module 4... optical module n is used at the head end, and optical module 1, optical module 3... optical module n-1 is used at the tail end, such as Figure 5 and Figure 7 shown.

[0114] Take the networking model composed of 6 parallel optical modules as an example. Assume that the transmission wavelengths are λ1, λ2, ... λ6 in order from short to long, and the corresponding optical modules are numbered as optical module 1, optical module 2, ... optical module 6. Figure 8 to Figure 11 As shown, the wavelengths are arranged as follows:

[0115] ① The transmitting wavelength and receiving wavelength of optical module 1, optical module 2, ..., optical module 6 are selected as λ1 and λ2, λ2 and λ1, λ3 and λ4, λ4 and λ3, λ5 and λ6, λ6 and λ5 respectively.

[0116] ② When networking, optical module 1 and optical module 2 are used in pairs, optical module 3 and optical module 4 are used in pairs, and optical module 5 and optical module 6 are used in pairs, forming a total of 3 pairs of paired optical modules.

[0117] ③ In the network, optical module 1, optical module 3, and optical module 5 can be used at the head end, and optical module 2, optical module 4, and optical module 6 can be used at the tail end. Figure 8 and Fig.10 As shown; optical module 2, optical module 4, optical module 6 can also be used at the head end, and optical module 1, optical module 3, optical module 5 can be used at the tail end, such as Fig. 9 and Fig.11 shown.

[0118] 2. Networking model

[0119] After pairing the optical modules according to the above wavelength arrangement method, there are two networking models.

[0120] Networking model 1 (also known as the first networking model): odd-numbered optical modules are networked in ascending order, and even-numbered optical modules are networked in descending order. The odd-numbered optical modules can be used at the head end and the even-numbered optical modules can be used at the tail end. Figure 4 As shown; even-numbered optical modules can also be used at the head end and odd-numbered optical modules can be used at the tail end, such as Figure 5 The network arrangement method is as follows:

[0121] (1) The optical uplink port of the first-stage optical module at the head end is interconnected with the optical uplink port of the first-stage optical module at the tail end through a single-core optical cable core, that is, the optical uplink port of optical module 1 is interconnected with the optical uplink port of optical module n through a single-core optical cable core.

[0122] (2) For odd-numbered optical modules, the arrangement order is optical module 1, optical module 3, ... optical module n-1, that is, the optical modules are arranged in order from short to long according to their transmission wavelengths. According to the arrangement order, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the lower-level optical module through an optical jumper fiber, that is, the optical downlink port of optical module 1 is interconnected with the optical uplink port of optical module 3 through an optical jumper fiber, the optical downlink port of optical module 3 is interconnected with the optical uplink port of optical module 5 through an optical jumper fiber, ... the optical downlink port of optical module n-3 is interconnected with the optical uplink port of optical module n-1 through an optical jumper fiber.

[0123] (3) For even-numbered optical modules, the arrangement order is optical module n, optical module n-2, ... optical module 2, that is, the optical modules are arranged in order from long to short according to their transmission wavelengths. According to the arrangement order, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the lower-level optical module through an optical jumper fiber, that is, the optical downlink port of optical module n is interconnected with the optical uplink port of optical module n-2 through an optical jumper fiber, the optical downlink port of optical module n-2 is interconnected with the optical uplink port of optical module n-4 through an optical jumper fiber, ... the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through an optical jumper fiber.

[0124] Taking the networking model consisting of 6 parallel optical modules as an example, optical module 1, optical module 3, and optical module 5 can be used at the head end, and optical module 2, optical module 4, and optical module 6 can be used at the tail end. Figure 8 As shown; optical module 2, optical module 4, optical module 6 can also be used at the head end, and optical module 1, optical module 3, optical module 5 can be used at the tail end, such as Fig. 9 The network arrangement is as follows:

[0125] ① The optical uplink port of optical module 1 and the optical uplink port of optical module 6 are interconnected through a 1-core optical cable core.

[0126] ② For odd-numbered optical modules, the arrangement order is optical module 1, optical module 3, and optical module 5. The optical downlink port of optical module 1 is interconnected with the optical uplink port of optical module 3 through an optical jumper fiber, and the optical downlink port of optical module 3 is interconnected with the optical uplink port of optical module 5 through an optical jumper fiber.

[0127] ③ For even-numbered optical modules, the arrangement order is optical module 6, optical module 4, and optical module 2. The optical downlink port of optical module 6 is interconnected with the optical uplink port of optical module 4 through an optical jumper fiber, and the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through an optical jumper fiber.

[0128] In this networking model, when the number of optical modules actually involved in the networking application is less than that in the above standard model, that is, when the number of optical modules involved in the networking is less than n / 2 pairs, the networking arrangement method is as follows:

[0129] 1) For odd-numbered optical modules, excluding the optical modules that do not participate in networking in the standard model, the remaining optical modules are still arranged in order from short to long according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the next-level optical module are interconnected through optical jumper fibers. For example: if optical module 1 does not participate in networking, the arrangement order of the optical modules during networking is optical module 3, optical module 5...optical module n-1, the optical downlink port of optical module 3 and the optical uplink port of optical module 5 are interconnected through optical jumper fibers, the optical downlink port of optical module 5 and the optical uplink port of optical module 7 are interconnected through optical jumper fibers...the optical downlink port of optical module n-3 and the optical uplink port of optical module n-1 are interconnected through optical jumper fibers; if optical module 3 does not participate in networking, the arrangement order of the optical modules during networking is optical module 1, optical module 5...optical module n-1, the optical downlink port of optical module 1 and the optical uplink port of optical module 5 are interconnected through optical jumper fibers. The optical modules are interconnected through optical jumper fibers, the optical downlink port of optical module 5 and the optical uplink port of optical module 7 are interconnected through optical jumper fibers...the optical downlink port of optical module n-3 and the optical uplink port of optical module n-1 are interconnected through optical jumper fibers; if optical module n-1 does not participate in networking, the arrangement order of the optical modules during networking is optical module 1, optical module 3...optical module n-3, the optical downlink port of optical module 1 and the optical uplink port of optical module 3 are interconnected through optical jumper fibers, the optical downlink port of optical module 3 and the optical uplink port of optical module 5 are interconnected through optical jumper fibers...the optical downlink port of optical module n-5 and the optical uplink port of optical module n-3 are interconnected through optical jumper fibers.

[0130] 2) For even-numbered optical modules, excluding the optical modules that do not participate in networking in the standard model, the remaining optical modules are still arranged in order from long to short according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the next-level optical module through optical jumper fibers. For example: If optical module n does not participate in networking, the arrangement order of the optical modules during networking is optical module n-2, optical module n-4...optical module 2, the optical downlink port of optical module n-2 is interconnected with the optical uplink port of optical module n-4 through optical jumper fibers, the optical downlink port of optical module n-4 is interconnected with the optical uplink port of optical module n-6 through optical jumper fibers...the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through optical jumper fibers; if optical module n-2 does not participate in networking, the arrangement order of the optical modules during networking is optical module n, optical module n-4...optical module 2, the optical downlink port of optical module n is interconnected with the optical uplink port of optical module n-4 through optical jumper fibers...the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through optical jumper fibers; The optical uplink ports are interconnected through optical jumper fibers, the optical downlink port of optical module n-4 is interconnected with the optical uplink port of optical module n-6 through optical jumper fibers...the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through optical jumper fibers; if optical module 2 does not participate in the networking, the arrangement order of the optical modules in the networking is optical module n, optical module n-2...optical module 4, the optical downlink port of optical module n is interconnected with the optical uplink port of optical module n-2 through optical jumper fibers, the optical downlink port of optical module n-2 is interconnected with the optical uplink port of optical module n-4 through optical jumper fibers...the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 2 through optical jumper fibers.

[0131] 3) Excluding the optical modules that do not participate in the networking in the standard model, the optical uplink port of the first-level optical module at the head end participating in the networking and the optical uplink port of the first-level optical module at the tail end participating in the networking are interconnected through a single-core optical cable core. For example: if optical modules 1 and 2 do not participate in the networking, the optical uplink port of optical module 3 is interconnected with the optical uplink port of optical module n through a single-core optical cable core; if optical modules n-1 and n do not participate in the networking, the optical uplink port of optical module 1 is interconnected with the optical uplink port of optical module n-2 through a single-core optical cable core; if one or more pairs of optical modules from optical modules 3 to n-2 do not participate in the networking, the optical uplink port of optical module 1 is still interconnected with the optical uplink port of optical module n through a single-core optical cable core.

[0132] Networking model 2 (also known as the second networking model): odd-numbered optical modules are networked in descending order, and even-numbered optical modules are networked in descending order. The odd-numbered optical modules can be used at the head end and the even-numbered optical modules can be used at the tail end. Figure 6 As shown; even-numbered optical modules can also be used at the head end and odd-numbered optical modules can be used at the tail end, such as Figure 7 The network arrangement method is as follows:

[0133] (1) The optical uplink port of the first-stage optical module at the head end is interconnected with the optical uplink port of the first-stage optical module at the tail end through a single-core optical cable core, that is, the optical uplink port of optical module 2 is interconnected with the optical uplink port of optical module n-1 through a single-core optical cable core.

[0134] (2) For odd-numbered optical modules, the arrangement order is optical module n-1, optical module n-3, ... optical module 1, that is, the optical modules are arranged in order from long to short according to their transmission wavelengths. According to the arrangement order, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the lower-level optical module through an optical jumper fiber, that is, the optical downlink port of optical module n-1 is interconnected with the optical uplink port of optical module n-3 through an optical jumper fiber, the optical downlink port of optical module n-3 is interconnected with the optical uplink port of optical module n-5 through an optical jumper fiber, ... the optical downlink port of optical module 3 is interconnected with the optical uplink port of optical module 1 through an optical jumper fiber.

[0135] (3) For even-numbered optical modules, the arrangement order is optical module 2, optical module 4, ... optical module n, that is, the optical modules are arranged in order from short to long according to their transmission wavelengths. According to the arrangement order, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the lower-level optical module through an optical jumper fiber, that is, the optical downlink port of optical module 2 is interconnected with the optical uplink port of optical module 4 through an optical jumper fiber, the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 6 through an optical jumper fiber, ... the optical downlink port of optical module n-2 is interconnected with the optical uplink port of optical module n through an optical jumper fiber.

[0136] Taking the networking model consisting of 6 parallel optical modules as an example, optical module 1, optical module 3, and optical module 5 can be used at the head end, and optical module 2, optical module 4, and optical module 6 can be used at the tail end. Fig.10 As shown; optical module 2, optical module 4, optical module 6 can also be used at the head end, and optical module 1, optical module 3, optical module 5 can be used at the tail end, such as Fig.11 The network arrangement is as follows:

[0137] ① The optical uplink port of optical module 2 and the optical uplink port of optical module 5 are interconnected through a single-core optical cable core.

[0138] ② For odd-numbered optical modules, the arrangement order is optical module 5, optical module 3, and optical module 1. The optical downlink port of optical module 5 is interconnected with the optical uplink port of optical module 3 through an optical jumper fiber, and the optical downlink port of optical module 3 is interconnected with the optical uplink port of optical module 1 through an optical jumper fiber.

[0139] ③ For even-numbered optical modules, the arrangement order is optical module 2, optical module 4, and optical module 6. The optical downlink port of optical module 2 is interconnected with the optical uplink port of optical module 4 through an optical jumper fiber, and the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 6 through an optical jumper fiber.

[0140] In this networking model, when the number of optical modules actually involved in the networking application is less than that in the above standard model, that is, when the number of optical modules involved in the networking is less than n / 2 pairs, the networking arrangement method is as follows:

[0141] 1) For odd-numbered optical modules, excluding the optical modules that do not participate in the networking in the standard model, the remaining optical modules are still arranged in order from long to short according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module and the optical uplink port of the next-level optical module are interconnected through optical jumper fibers. For example: If optical module n-1 does not participate in the networking, the arrangement order of the optical modules during networking is optical module n-3, optical module n-5...optical module 1, the optical downlink port of optical module n-3 and the optical uplink port of optical module n-5 are interconnected through optical jumper fibers, the optical downlink port of optical module n-5 and the optical uplink port of optical module n-7 are interconnected through optical jumper fibers...the optical downlink port of optical module 3 and the optical uplink port of optical module 1 are interconnected through optical jumper fibers; if optical module n-3 does not participate in the networking, the arrangement order of the optical modules during networking is optical module n-1, optical module n-5...optical module 1, the optical downlink port of optical module n-1 and the optical uplink port of optical module n-5 are interconnected through optical jumper fibers The optical uplink port of optical module n-5 is interconnected with the optical uplink port of optical module n-7 through optical jumper fibers, and the optical downlink port of optical module 3 is interconnected with the optical uplink port of optical module 1 through optical jumper fibers. If optical module 1 does not participate in the networking, the arrangement order of the optical modules in the networking is optical module n-1, optical module n-3, and optical module 3. The optical downlink port of optical module n-1 is interconnected with the optical uplink port of optical module n-3 through optical jumper fibers, the optical downlink port of optical module n-3 is interconnected with the optical uplink port of optical module n-5 through optical jumper fibers, and the optical downlink port of optical module 5 is interconnected with the optical uplink port of optical module 3 through optical jumper fibers.

[0142] 2) For even-numbered optical modules, excluding the optical modules that do not participate in networking in the standard model, the remaining optical modules are still arranged in order from short to long according to the transmission wavelength of the optical modules, and in the order of arrangement, the optical downlink port of the upper-level optical module is interconnected with the optical uplink port of the next-level optical module through optical jumper fibers. For example: if optical module 2 does not participate in networking, the arrangement order of the optical modules during networking is optical module 4, optical module 6...optical module n, the optical downlink port of optical module 4 is interconnected with the optical uplink port of optical module 6 through optical jumper fibers, the optical downlink port of optical module 6 is interconnected with the optical uplink port of optical module 8 through optical jumper fibers...the optical downlink port of optical module n-2 is interconnected with the optical uplink port of optical module n through optical jumper fibers; if optical module 4 does not participate in networking, the arrangement order of the optical modules during networking is optical module 2, optical module 6...optical module n, the optical downlink port of optical module 2 is interconnected with the optical uplink port of optical module 6 through optical jumper fibers Fiber jumper interconnection, the optical downlink port of optical module 6 and the optical uplink port of optical module 8 are interconnected through optical fiber jumpers...the optical downlink port of optical module n-2 and the optical uplink port of optical module n are interconnected through optical fiber jumpers; if optical module n does not participate in networking, the arrangement order of the optical modules during networking is optical module 2, optical module 4...optical module n-2, the optical downlink port of optical module 2 and the optical uplink port of optical module 4 are interconnected through optical fiber jumpers, the optical downlink port of optical module 4 and the optical uplink port of optical module 6 are interconnected through optical fiber jumpers...the optical downlink port of optical module n-4 and the optical uplink port of optical module n-2 are interconnected through optical fiber jumpers.

[0143] 3) Excluding the optical modules that do not participate in the networking in the standard model, the optical uplink port of the first-level optical module at the head end participating in the networking and the optical uplink port of the first-level optical module at the tail end participating in the networking are interconnected through a single-core optical cable core. For example: if optical module 1 and optical module 2 do not participate in the networking, the optical uplink port of optical module 4 is interconnected with the optical uplink port of optical module n-1 through a single-core optical cable core; if optical module n-1 and optical module n do not participate in the networking, the optical uplink port of optical module 2 is interconnected with the optical uplink port of optical module n-3 through a single-core optical cable core; if one or more pairs of optical modules from optical modules 3 to n-2 do not participate in the networking, the optical uplink port of optical module 2 is still interconnected with the optical uplink port of optical module n-1 through a single-core optical cable core.

[0144] 3. Parallel optical component structure model and optical signal transmission process

[0145] According to the wavelength and networking arrangement method of the above parallel optical module, the parallel optical component adopts a two-stage long-wave pass TFF filter structure. The first stage TFF filter realizes the separation of the optical module's sending wavelength and receiving wavelength from the optical signal received from the uplink port, and the total reflection of the optical signal received by the optical downlink port. The second stage TFF filter realizes the separation of the optical module's sending wavelength and receiving wavelength optical signal. There are two structural models, of which structural model one is applied to networking model one, and structural model two is applied to networking model two.

[0146] Parallel optical component structure model 1: For optical modules with odd numbers, let its number be i, then the cutoff wavelength of the first-stage TFF filter is designed between λi+1 and λi+2, and the cutoff wavelength of the second-stage TFF filter is designed between λi and λi+1; for optical modules with even numbers, let its number be j, the cutoff wavelength of the first-stage TFF filter is designed between λj-1 and λj-2, and the cutoff wavelength of the second-stage TFF filter is designed between λj and λj-1.

[0147] (1) When the optical module is numbered as an odd number, its transmission wavelength is λi and its receiving wavelength is λi+1. The cutoff wavelength of the first-stage TFF filter is designed to be between λi+1 and λi+2, so that all optical signals with incident wavelengths ≥λi+2 are transmitted and all optical signals with incident wavelengths ≤λi+1 are reflected; the cutoff wavelength of the second-stage TFF filter is designed to be between λi and λi+1, so that all optical signals with received wavelengths of λi+1 are transmitted and all optical signals with transmitted wavelengths of λi are reflected. Fig.12 Taking the basic structure shown as an example, the optical signal transmission process is as follows:

[0148] ① The optical signal with a wavelength of λi sent by the optical sending unit is first reflected by the second-stage TFF filter to the first-stage TFF filter, and then reflected by the first-stage TFF filter to the optical uplink port.

[0149] ② According to the previous networking arrangement method, the optical signals of λ2, λ4~λi-2 have been separated by the upstream optical module, so the wavelengths of the optical signals received from the optical uplink port are λi+1, λi+3~λn. The optical signal received from the optical uplink port first passes through the first-stage TFF filter to reflect the optical signal with a wavelength of λi+1 to the second-stage TFF filter, and transmits the remaining optical signals with wavelengths of λi+3, λi+5~λn to the optical downlink port; the optical signal with a wavelength of λi+1 passes through the second-stage TFF filter to the optical receiving unit.

[0150] ③ According to the previous networking arrangement method, the wavelengths of the optical signals received from the optical downlink port are λi+2, λi+4~λn-1, and are all transmitted to the optical uplink port after the first-level TFF filtering.

[0151] (2) When the optical module is numbered as an even number, its transmission wavelength is λj and its reception wavelength is λj-1. The cutoff wavelength of the first-stage TFF filter is designed to be between λj-1 and λj-2, so that all optical signals with incident wavelengths ≥ λj-1 are transmitted and all optical signals with incident wavelengths ≤ λj-2 are reflected. The cutoff wavelength of the second-stage TFF filter is designed to be between λj and λj-1, so that all optical signals with received wavelengths of λj-1 are reflected and all optical signals with transmitted wavelengths of λj are transmitted. Fig.13Taking the basic structure shown as an example, the optical signal transmission process is as follows:

[0152] ① The optical signal with a wavelength of λj sent by the optical sending unit first passes through the second-stage TFF filter and is transmitted to the first-stage TFF filter, and then passes through the first-stage TFF filter and is transmitted to the optical uplink port.

[0153] ② According to the previous networking arrangement method, the optical signals of λj+1, λj+3~λn-1 have been separated by the upstream optical module, so the wavelengths of the optical signals received from the optical uplink port are λ1, λ3~λj-1. The optical signal received from the optical uplink port first passes through the first-stage TFF filter to transmit the optical signal with a wavelength of λj-1 to the second-stage TFF filter, and the remaining optical signals with wavelengths of λ1, λ3~λj-3 are all reflected to the optical downlink port; the optical signal with a wavelength of λj-1 is then reflected to the optical receiving unit through the second-stage TFF filter.

[0154] ③ According to the previous networking arrangement method, the wavelengths of the optical signals received from the optical downlink port are λ2, λ4~λj-2, and are all reflected to the optical uplink port after the first-level TFF filtering.

[0155] Parallel optical component structure model 2: For optical modules with odd numbers, let its number be i, then the cutoff wavelength of the first-stage TFF filter is designed between λi and λi-1, and the cutoff wavelength of the second-stage TFF filter is designed between λi and λi+1; for optical modules with even numbers, let its number be j, the cutoff wavelength of the first-stage TFF filter is designed between λj and λj+1, and the cutoff wavelength of the second-stage TFF filter is designed between λj and λj-1.

[0156] (1) When the optical module is numbered as an odd number, its transmission wavelength is λi and its receiving wavelength is λi+1. The cutoff wavelength of the first-stage TFF filter is designed to be between λi and λi-1, so that all optical signals with incident wavelengths ≥ λi are transmitted and all optical signals with incident wavelengths ≤ λi-1 are reflected; the cutoff wavelength of the second-stage TFF filter is designed to be between λi and λi+1, so that all optical signals with received wavelengths of λi+1 are transmitted and all optical signals with transmitted wavelengths of λi are reflected. Fig.14 Taking the basic structure shown as an example, the optical signal transmission process is as follows:

[0157] ① The optical signal with a wavelength of λi sent by the optical sending unit is first reflected by the second-stage TFF filter to the first-stage TFF filter, and then transmitted to the optical uplink port through the first-stage TFF filter.

[0158] ② According to the previous networking arrangement method, the optical signals of λi+3, λi+5~λn have been separated by the upstream optical module, so the wavelengths of the optical signals received from the optical uplink port are λ2, λ4~λi+1. The optical signal received from the optical uplink port first passes through the first-stage TFF filter to transmit the optical signal with a wavelength of λi+1 to the second-stage TFF filter, and transmits the remaining optical signals with wavelengths of λ2, λ4~λi-1 to the optical downlink port; the optical signal with a wavelength of λi+1 passes through the second-stage TFF filter to the optical receiving unit.

[0159] ③ According to the previous networking arrangement method, the wavelengths of the optical signals received from the optical downlink port are λ1, λ3~λi-2, and are all reflected to the optical uplink port after the first-level TFF filtering.

[0160] (2) When the optical module is numbered as an even number, its transmission wavelength is λj and its reception wavelength is λj-1. The cutoff wavelength of the first-stage TFF filter is designed to be between λj and λj+1, so that all optical signals with incident wavelengths ≥ λj+1 are transmitted and all optical signals with incident wavelengths ≤ λj are reflected; the cutoff wavelength of the second-stage TFF filter is designed to be between λj and λj-1, so that all optical signals with received wavelengths of λj-1 are reflected and all optical signals with transmitted wavelengths of λj are transmitted. Fig.15 Taking the basic structure shown as an example, the optical signal transmission process is as follows:

[0161] ① The optical signal with a wavelength of λj sent by the optical sending unit first passes through the second-stage TFF filter, is transmitted to the first-stage TFF filter, and then is reflected to the optical uplink port through the first-stage TFF filter.

[0162] ② According to the previous networking arrangement method, the optical signals of λ1, λ3~λj-3 have been separated by the upstream optical module, so the wavelengths of the optical signals received from the optical uplink port are λj-1, λj+1~λn-1. The optical signal received from the optical uplink port first passes through the first-stage TFF filter to reflect the optical signal with a wavelength of λj-1 to the second-stage TFF filter, and transmits the remaining optical signals with wavelengths of λj+1, λj+3~λn-1 to the optical downlink port; the optical signal with a wavelength of λj-1 passes through the second-stage TFF filter and is reflected to the optical receiving unit.

[0163] ③ According to the previous networking arrangement method, the wavelengths of the optical signals received from the optical downlink port are λj+2, λj+4~λn, and are all transmitted to the optical uplink port after the first-level TFF filtering.

[0164] For the last-stage optical module in the two networking models of the present invention, the parallel optical component can cancel the second-stage TFF filtering in the above two parallel optical component structure models, and only retain the first-stage TFF filtering.

[0165] It should be noted that, by adopting the wavelength and networking arrangement method of the parallel optical module provided by the present invention, long-wave pass filters can be used to design and produce parallel optical components, which brings the following beneficial effects:

[0166] a) It can effectively reduce the number of coating layers of TFF filters, reduce the insertion loss of parallel optical components caused by TFF filters, effectively increase the optical transmission distance of parallel optical module networking systems, and facilitate the increase in the number of optical module networks and the extension of distance.

[0167] b) When networking, the number of optical modules passing between each pair of optical signal transmission links is the same, so the optical power budget is more balanced during networking, which can effectively increase the optical transmission distance of the parallel optical module networking system, and is conducive to the increase in the number of optical modules in networking and the extension of the distance.

[0168] c) Reduce the difficulty of TFF filter coating, improve the yield rate, and reduce the cost of optical modules.

[0169] The wavelength and networking arrangement method of the parallel optical module provided by the embodiment of the present invention firstly number the n optical modules in the networking model of the parallel optical module in the order of the transmission wavelength from short to long; then set the transmission wavelength of the optical module with odd number in the n optical modules to be λi, and the transmission wavelength of the optical module with even number to be λj; and set the receiving wavelength of the optical module with odd number in the n optical modules to be λi+1, and the receiving wavelength of the optical module with even number to be λj-1; then, when networking, the optical module with odd number is used in pairing with the adjacent even number optical module with number greater than 1; finally, in networking, the optical module with odd number and the optical module with even number are networked according to the networking model, wherein, if the optical module with odd number is at the head end, the optical module with even number is at the tail end, and if the optical module with odd number is at the tail end, the optical module with even number is at the head end, and there are n / 2 optical modules at the head end and the tail end respectively. The present invention arranges the transmission wavelength and receiving wavelength of each optical module in the networking model, as well as the networking order, so that each TFF filter in the parallel optical component can be designed as a long-wave pass filter with lower process complexity, cost and insertion loss, and realizes the effective control of the transmission direction of the optical signal by the parallel optical module, thereby effectively reducing the process difficulty of the product in development and production, improving the product yield, reducing insertion loss, and reducing production costs. At the same time, the design improves product performance and facilitates application and promotion. It solves the problem that although the existing parallel optical module is more flexible in networking, it requires the TFF filter in the parallel optical component to only support the passage of optical signals of a certain specific wavelength, which easily leads to high process difficulty, low yield, large insertion loss and high cost.

[0170] Embodiment 2:

[0171] like Fig.16As shown, this embodiment provides a wavelength and networking arrangement device for a parallel optical module, which is used to execute the wavelength and networking arrangement method for the parallel optical module, including:

[0172] The optical module numbering module 11 is used to number n optical modules in the parallel optical module networking model in the order of transmission wavelength from short to long, where n is an even number;

[0173] A transmission wavelength setting module 12, connected to the optical module numbering module 11, is used to set the transmission wavelength of the optical modules with odd numbers among the n optical modules to λi and the transmission wavelength of the optical modules with even numbers to λj;

[0174] A receiving wavelength setting module 13, connected to the transmitting wavelength setting module 12, is used to set the receiving wavelength of the odd-numbered optical modules among the n optical modules to λi+1 and the receiving wavelength of the even-numbered optical modules to λj-1;

[0175] An optical module pairing module 14, connected to the receiving wavelength setting module 13, is used for pairing an odd-numbered optical module with an adjacent even-numbered optical module whose number is greater than 1 when networking;

[0176] The networking arrangement module 15 is connected to the optical module pairing module 14, and is used to network the odd-numbered optical modules and the even-numbered optical modules according to the networking model in the networking, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end; if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and the head end and the tail end have n / 2 optical modules respectively.

[0177] Optionally, the optical module numbering module 11 specifically includes:

[0178] The first setting unit is used to set a parallel optical module networking model with n optical modules in total and n transmission wavelengths in total;

[0179] The second setting unit is used to set the transmission wavelengths of the n optical modules to be λ1 to λn in order from short to long, and the corresponding optical module numbers are optical module 1 to optical module n.

[0180] Optionally, the networking arrangement module 15 includes:

[0181] The first networking arrangement unit is used to network the odd-numbered optical modules in the order of numbers or transmission wavelengths from small to large according to the first networking model, and the even-numbered optical modules in the order of numbers or transmission wavelengths from large to small; or

[0182] The second networking arrangement unit is used to network the odd-numbered optical modules in a descending order of numbers or transmission wavelengths according to the second networking model, and the even-numbered optical modules in a descending order of numbers or transmission wavelengths;

[0183] Among them, the optical uplink port of the first-level optical module at the head end participating in the networking is interconnected with the optical uplink port of the first-level optical module at the tail end participating in the networking through a single-core optical cable core. Except for the first-level optical module, when the optical modules at the head end and the tail end participating in the networking are interconnected, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through an optical jumper fiber.

[0184] Optionally, if the number of optical modules actually participating in the networking application is less than n / 2 pairs, the first networking arrangement unit is specifically configured to:

[0185] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the first networking model;

[0186] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the first networking model.

[0187] Optionally, if the number of optical modules actually participating in the networking application is less than n / 2 pairs, the second networking arrangement unit is specifically configured to:

[0188] If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the second networking model;

[0189] If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the second networking model.

[0190] Optionally, the device further comprises:

[0191] The filter structure selection module is used to adopt a two-stage long-wave pass thin film filter TFF filter structure when designing a parallel optical component of a parallel optical module, wherein the first stage TFF filter realizes the separation of the optical module's sending wavelength and receiving wavelength from the optical signal received from the optical uplink port, and the total reflection of the optical signal received at the optical downlink port, and the second stage TFF filter realizes the separation of the optical module's sending wavelength and receiving wavelength optical signals.

[0192] Optionally, if the networking model is the first networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi+1 and λi+2, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj-1 and λj-2, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1;

[0193] If the networking model is the second networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi and λi-1, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj and λj+1, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1.

[0194] Embodiment 3:

[0195] refer to Fig.17 This embodiment provides a wavelength and networking arrangement device for a parallel optical module, including a memory 21 and a processor 22, wherein the memory 21 stores a computer program, and the processor 22 is configured to run the computer program to execute the wavelength and networking arrangement method for the parallel optical module in Example 1.

[0196] The memory 21 is connected to the processor 22. The memory 21 may be a flash memory, a read-only memory or other memory. The processor 22 may be a central processing unit or a single-chip microcomputer.

[0197] Embodiment 4:

[0198] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the wavelength and networking arrangement method of the parallel optical module in the above-mentioned embodiment 1 is implemented.

[0199] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules or other data). Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0200] In summary, the wavelength and networking arrangement method, device and medium of the parallel optical module provided by the embodiment of the present invention first number the n optical modules in the parallel optical module networking model in the order of the transmission wavelength from short to long; then set the transmission wavelength of the odd-numbered optical module in the n optical modules to be λi, and the transmission wavelength of the even-numbered optical module to be λj; and set the receiving wavelength of the odd-numbered optical module in the n optical modules to be λi+1, and the receiving wavelength of the even-numbered optical module to be λj-1; then, when networking, the odd-numbered optical module is used in pairing with its adjacent even-numbered optical module whose number is greater than 1; finally, in networking, the odd-numbered optical module and the even-numbered optical module are networked according to the networking model, wherein, if the odd-numbered optical module is at the head end, the even-numbered optical module is at the tail end, and if the odd-numbered optical module is at the tail end, the even-numbered optical module is at the head end, and the head end and the tail end have n / 2 optical modules respectively. The present invention arranges the transmission wavelength and receiving wavelength of each optical module in the networking model, as well as the networking order, so that each TFF filter in the parallel optical component can be designed as a long-wave pass filter with lower process complexity, cost and insertion loss, and realizes the effective control of the transmission direction of the optical signal by the parallel optical module, thereby effectively reducing the process difficulty of the product in development and production, improving the product yield, reducing insertion loss, and reducing production costs. At the same time, the design improves product performance and facilitates application and promotion. It solves the problem that although the existing parallel optical module is more flexible in networking, it requires the TFF filter in the parallel optical component to only support the passage of optical signals of a certain specific wavelength, which easily leads to high process difficulty, low yield, large insertion loss and high cost.

[0201] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A wavelength and networking arrangement method for parallel optical modules, characterized in that: The method comprises: Number the n optical modules in the parallel optical module networking model in the order of the transmission wavelength from short to long, where n is an even number; Suppose the transmission wavelength of the odd-numbered optical modules among the n optical modules is λi, and the transmission wavelength of the even-numbered optical modules is λj; Assume that the receiving wavelength of the odd-numbered optical modules among the n optical modules is λi+1, and the receiving wavelength of the even-numbered optical modules is λj-1; When networking, pair the odd-numbered optical modules with the adjacent even-numbered optical modules whose numbers are greater than 1. In networking, odd-numbered optical modules and even-numbered optical modules are networked according to the networking model, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end, and if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and there are n / 2 optical modules at the head end and the tail end respectively.

2. The method according to claim 1, characterized in that The n optical modules in the parallel optical module networking model are numbered in order of the transmission wavelength from short to long, specifically including: Assume that the parallel optical module networking model has a total of n optical modules, and a total of n transmission wavelengths are required; Assume that the transmission wavelengths of n optical modules are arranged from short to long in order from λ1 to λn, and the corresponding optical modules are numbered from optical module 1 to optical module n.

3. The method according to claim 1, characterized in that The networking of the odd-numbered optical modules and the even-numbered optical modules according to the networking model specifically includes: According to the first networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large, and the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small; or, According to the second networking model, the odd-numbered optical modules are networked in the order of numbers or transmission wavelengths from large to small, while the even-numbered optical modules are networked in the order of numbers or transmission wavelengths from small to large; Among them, the optical uplink port of the first-level optical module at the head end participating in the networking is interconnected with the optical uplink port of the first-level optical module at the tail end participating in the networking through a single-core optical cable core. Except for the first-level optical module, when the optical modules at the head end and the tail end participating in the networking are interconnected, the optical downlink port of the upper-level optical module and the optical uplink port of the lower-level optical module are interconnected through an optical jumper fiber.

4. The method according to claim 3, characterized in that If the optical modules actually involved in the networking application are less than n / 2 pairs, the optical modules with odd numbers are networked in ascending order of numbers or transmission wavelengths according to the first networking model, and the optical modules with even numbers are networked in descending order of numbers or transmission wavelengths, specifically including: If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the first networking model; If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the first networking model.

5. The method according to claim 3, characterized in that: If the number of optical modules actually involved in the networking application is less than n / 2 pairs, the optical modules with odd numbers are networked in descending order of numbers or transmission wavelengths according to the second networking model, and the optical modules with even numbers are networked in ascending order of numbers or transmission wavelengths, specifically including: If there are optical modules that do not participate in networking among the odd-numbered optical modules, the optical modules that do not participate in networking among the odd-numbered optical modules are deducted, and the remaining optical modules are networked in descending order of number or transmission wavelength according to the second networking model; If there are optical modules that do not participate in networking among the even-numbered optical modules, the optical modules that do not participate in networking among the even-numbered optical modules are deducted, and the remaining optical modules are networked in ascending order of number or transmission wavelength according to the second networking model.

6. The method according to claim 3, characterized in that The method further comprises: When designing the parallel optical components of the parallel optical module, a two-stage long-wave pass thin film filter TFF filtering structure is adopted, wherein the first stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength from the optical signal received from the optical uplink port, and the total reflection of the optical signal received at the optical downlink port, and the second stage TFF filtering realizes the separation of the optical module sending wavelength and receiving wavelength optical signal.

7. The method according to claim 6, characterized in that If the networking model is the first networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi+1 and λi+2, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj-1 and λj-2, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1; If the networking model is the second networking model, then in the two-stage long-wave pass TFF filtering structure, for the optical module with an odd number i, the cut-off wavelength of the first-stage TFF filtering is designed between λi and λi-1, and the cut-off wavelength of the second-stage TFF filtering is designed between λi and λi+1; for the optical module with an even number j, the cut-off wavelength of the first-stage TFF filtering is designed between λj and λj+1, and the cut-off wavelength of the second-stage TFF filtering is designed between λj and λj-1.

8. A wavelength and networking arrangement device for parallel optical modules, characterized in that: The device comprises: An optical module numbering module is used to number n optical modules in a parallel optical module networking model in order of transmission wavelength from short to long, where n is an even number; A transmission wavelength setting module, connected to the optical module numbering module, used to set the transmission wavelength of the optical modules with odd numbers among the n optical modules to λi and the transmission wavelength of the optical modules with even numbers to λj; A receiving wavelength setting module, connected to the transmitting wavelength setting module, used to set the receiving wavelength of the odd-numbered optical modules among the n optical modules to λi+1 and the receiving wavelength of the even-numbered optical modules to λj-1; An optical module pairing module, connected to the receiving wavelength setting module, is used for pairing an odd-numbered optical module with an adjacent even-numbered optical module whose number is greater than 1 when networking; The networking arrangement module is connected to the optical module pairing module and is used to network the odd-numbered optical modules and the even-numbered optical modules according to the networking model in the networking, wherein if the odd-numbered optical modules are at the head end, the even-numbered optical modules are at the tail end; if the odd-numbered optical modules are at the tail end, the even-numbered optical modules are at the head end, and the head end and the tail end each have n / 2 optical modules.

9. A wavelength and networking arrangement device for parallel optical modules, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to implement the wavelength and networking arrangement method of the parallel optical module according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the wavelength and networking arrangement method of the parallel optical module according to any one of claims 1 to 7 is implemented.

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