Optical communication structure and optical communication correspondence relationship establishment method and assembly method

Abstract

The application provides an optical communication structure and an optical communication correspondence relationship establishing method and assembling method. Light emitted by each light source is correspondingly irradiated on at least two photodetectors, the at least two photodetectors form a responding photodetector group, and the optical communication correspondence relationship between the light source array and the photodetector array is established. Meanwhile, the mapping relationship is established and dynamically updated based on the correlation operation of the actual response, the grid area or the time sequence coding, and the assembling alignment is completed by fixing one end of the fixed optical fiber assembly and rotating and adjusting the other end, so that the coupling alignment precision requirement and the assembling difficulty are reduced.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and in particular to an optical communication structure and a method for establishing and assembling optical communication correspondences. Background Technology

[0002] With the development of high-speed, high-capacity, and highly integrated optical communication technologies, optical communication structures that utilize emission source arrays, fiber optic components, and photodetector arrays to achieve multi-channel parallel optical signal transmission have been widely applied. The emission source array can be composed of emission sources such as micro-LEDs or vertical-cavity surface-emitting lasers (VCSELs), while the photodetector array can be composed of photodetectors such as avalanche photodiodes (APDs) or P-type intrinsic-N-type photodiodes (PIN photodiodes). The light emitted from the emission source is coupled into the optical fiber via coupling optical components and then transmitted through the fiber to the corresponding photodetector.

[0003] In existing optical communication structures, a one-to-one correspondence is typically pre-defined between the emitting light source, the light guide channel in the optical fiber, and the photodetector. This means that light emitted from one emitting light source is transmitted through its corresponding light guide channel to a photodetector at a specific location. To achieve this one-to-one correspondence, the emitting light source array, optical fiber assembly, and photodetector array require precise coupling and alignment during the assembly process. This ensures that the light emitted from each emitting light source is accurately coupled to its corresponding light guide channel, and that the light spot output from the light guide channel accurately falls within the photosensitive area of ​​the corresponding photodetector.

[0004] However, due to manufacturing and assembly tolerances in the emitting light source array, fiber optic components, coupling optical components, and photodetector array, optical signals may experience positional deviations during transmission. This is especially true when the emitting light source, the light guide channels in the fiber optic cable, and the photodetectors are arranged with small spacing and high density; even small assembly deviations can cause the light spot to deviate from the target photodetector or misalign the correspondence between adjacent channels. To ensure the normal operation of each optical communication channel, existing technologies typically require repeated adjustments of the relative positions of each optical component using precision adjustment equipment, followed by fixing after precise alignment. This results in high alignment difficulty and assembly complexity for the optical communication structure, and is detrimental to improving assembly efficiency and product yield. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an optical communication structure and a method for establishing optical communication correspondences and an assembly method, in order to solve the problems in the prior art that require high coupling alignment accuracy and high assembly difficulty due to the need for a one-to-one correspondence between the emitting light source, the light guide channel and the photodetector at a specific position.

[0006] To achieve the above and other related objectives, the present invention provides an optical communication structure, the optical communication structure comprising:

[0007] The transmitter assembly includes a first circuit board and an array of emitting light sources disposed on the first circuit board;

[0008] The receiving end component includes a second circuit board and a photodetector array disposed on the second circuit board;

[0009] An optical fiber assembly is disposed between the transmitting end assembly and the receiving end assembly, the optical fiber assembly having a transmitting end near the transmitting end assembly and a receiving end near the receiving end assembly.

[0010] In this configuration, the light emitted by each of the emitting light sources in the emitting light source array is coupled to at least one light guide channel of the optical fiber assembly and transmitted through the optical fiber assembly to the photodetector array, so that the light emitted by each emitting light source illuminates at least two photodetectors in the photodetector array; wherein at least two photodetectors corresponding to the same emitting light source constitute a response photodetector group for that emitting light source, and the response photodetector groups corresponding to any two different emitting light sources do not overlap.

[0011] Optionally, the light source is a Micro-LED or a VCSEL.

[0012] Optionally, the photodetector is an avalanche photodiode or a PIN photodiode.

[0013] Optionally, the optical fiber assembly is a multi-core optical fiber, and one core of the multi-core optical fiber constitutes one of the light guiding channels; the light emitted by each of the emitting light sources in the emitting light source array is coupled to at least two of the cores of the multi-core optical fiber.

[0014] Optionally, the optical fiber assembly is a bundled optical fiber, which includes multiple independent optical fibers, and one of the independent optical fibers constitutes a light guiding channel; the light emitted by each of the emitting light sources in the emitting light source array is coupled to one of the independent optical fibers in the bundled optical fiber.

[0015] The present invention also provides a method for establishing optical communication correspondence, the method comprising:

[0016] An optical communication structure is provided to establish an optical communication correspondence. The optical communication structure includes a transmitter component, a receiver component, and an optical fiber component disposed between the transmitter component and the receiver component. The transmitter component includes a transmitting light source array, and the receiver component includes a photodetector array.

[0017] Control the emission of multiple emission sources in the emission source array to emit light;

[0018] The photodetector array detects the light emitted by multiple emission sources and obtains the response information generated by the photodetector array for each of the multiple emission sources.

[0019] Based on the response information, at least two response photodetectors corresponding to each of the plurality of emission sources are determined, and at least two response photodetectors corresponding to the same emission source are determined as the response photodetector group for that emission source; and

[0020] Based on the plurality of emitting light sources and their corresponding response photodetector groups, an optical communication correspondence is established between the emitting light source array and the photodetector array; wherein, in the optical communication correspondence, each emitting light source in the emitting light source array corresponds to one response photodetector group, and the response photodetector groups corresponding to any two different emitting light sources do not overlap.

[0021] Optionally,

[0022] A method for controlling the emission of multiple emission sources in the emission source array to emit light includes: controlling each of the emission sources in the emission source array to emit light sequentially;

[0023] The method for establishing the optical communication correspondence between the emitting light source array and the photodetector array includes: without pre-setting the correspondence between each emitting light source and the photodetector at a specific position, determining the response photodetector group corresponding to each emitting light source based on the response information obtained when each emitting light source emits light sequentially, and establishing a mapping relationship between each emitting light source and the corresponding response photodetector group.

[0024] Optionally, the photodetector array is pre-divided into multiple grid regions, each grid region is provided with at least two photodetectors, and the multiple grid regions correspond one-to-one with multiple emitting light sources in the emitting light source array; the method for establishing the optical communication correspondence between the emitting light source array and the photodetector array includes:

[0025] Adjust the position of at least one of the emission light source array, the optical fiber assembly, and the photodetector array relative to the other two, and during the adjustment process, control the emission of multiple emission light sources and detect the light emitted by multiple emission light sources through the photodetector array until the light spot formed by the light emitted by each emission light source on the photodetector array is located in the grid area pre-corresponding to the emission light source.

[0026] At least two photodetectors that generate an electrical response within the corresponding grid region are identified as the response photodetector group of the emitting light source, and a mapping relationship is established between each emitting light source and the corresponding response photodetector group.

[0027] Optionally, the transmitting end component further includes a timing coding driving module, and the receiving end component further includes a signal decoding module and a mapping processing module;

[0028] When the optical communication structure is powered on for initialization or reset, the timing coding driver module assigns a unique light source identifier to each of the transmitting light sources, and uses the pseudo-random sequence corresponding to each light source identifier as the timing code for each of the transmitting light sources.

[0029] Control each of the emission light sources to emit light according to the corresponding timing code;

[0030] The light emitted by each of the emission sources is detected by the photodetector array, and the correlation calculation is performed between the response information generated by each of the photodetectors and a plurality of pre-stored time-series codes by the signal decoding module.

[0031] When the result of the correlation calculation meets the preset conditions, the emission source corresponding to each of the response photodetectors is determined;

[0032] The mapping processing module establishes and maintains a dynamic mapping relationship between each of the emission light sources and the corresponding response photodetector group based on the result of the correlation calculation.

[0033] When the optical communication structure is operating normally, the changes in the response information are monitored through the mapping processing module; and

[0034] When it is determined that the dynamic mapping relationship has changed based on the change in the response information, the dynamic mapping relationship is updated.

[0035] Furthermore, the preset condition includes: the correlation peak value between the response information generated by the response photodetector and a timing code is continuously greater than a preset correlation threshold for a preset duration.

[0036] Furthermore, the dynamic mapping relationship includes the correspondence between each of the response photodetectors and the light source identifier of the corresponding emission light source, as well as at least one of the position information, response intensity, and correlation confidence of the response photodetector.

[0037] Furthermore, monitoring changes in the response information includes monitoring at least one of the response intensity, signal-to-noise ratio, and correlation output peak values ​​of each of the response photodetectors.

[0038] Furthermore, when the change in at least one of the response intensity, the signal-to-noise ratio, and the correlation output peak satisfies a preset update condition, it is determined that the dynamic mapping relationship has changed, and the dynamic mapping relationship is automatically updated by the mapping processing module.

[0039] Furthermore, when the correspondence between each of the emitting light sources and the corresponding response photodetector group changes due to temperature changes or vibrations, the mapping processing module updates the dynamic mapping relationship without interrupting optical communication.

[0040] Furthermore, it also includes: querying the dynamic mapping relationship based on the light source identifier of the transmitting light source carrying the data to be received, and extracting the data to be received from the response photodetector corresponding to the transmitting light source.

[0041] The present invention also provides a method for assembling an optical communication structure, the assembly method comprising:

[0042] A transmitter assembly, a receiver assembly, an optical fiber assembly, a transmitter housing, and a receiver housing are provided. The transmitter assembly includes a first circuit board and an array of emitting light sources disposed on the first circuit board. The receiver assembly includes a second circuit board and an array of photodetectors disposed on the second circuit board.

[0043] The optical fiber assembly is disposed between the transmitting end assembly and the receiving end assembly, with the transmitting end of the optical fiber assembly disposed inside the transmitting end housing and the end face of the transmitting end of the optical fiber assembly facing the light-emitting side of the light-emitting light source array, and the receiving end of the optical fiber assembly disposed inside the receiving end housing and the end face of the receiving end of the optical fiber assembly facing the light-receiving side of the photodetector array.

[0044] One of the transmitting end and the receiving end of the optical fiber assembly is designated as the positioning end, and the other is designated as the adjustment end. The position of the positioning end is adjusted so that the end face of the positioning end is aligned with the corresponding transmitting light source array or the photodetector array along the optical path, and the positioning end is fixed to the corresponding transmitting end housing or the receiving end housing. When the positioning end is the transmitting end of the optical fiber assembly, the corresponding element is the transmitting light source array; when the positioning end is the receiving end of the optical fiber assembly, the corresponding element is the photodetector array.

[0045] The adjustment end is rotatably mounted on the corresponding transmitter housing or receiver housing;

[0046] While keeping the positioning end fixed, power is applied to the transmitting end assembly and the receiving end assembly, and the emitting light source in the emitting light source array is controlled to emit light. At the same time, the adjusting end is rotated relative to the corresponding transmitting end assembly or receiving end assembly, so that the light emitted by the emitting light source is coupled to the optical fiber assembly and transmitted to the photodetector array through the optical fiber assembly. During the rotation of the adjusting end, the electrical response signal generated by the photodetector array is detected.

[0047] The rotation position of the adjustment end is adjusted according to the electrical response signal until, for each of the emitting light sources, at least one photodetector generates an electrical response signal corresponding to that emitting light source, and the rotation position of the adjustment end when this condition is met is determined as the target rotation position; and

[0048] Keep the adjustment end in the target rotation position and fix the adjustment end to the corresponding transmitter housing or receiver housing.

[0049] As described above, the optical communication structure, optical communication correspondence establishment method, and assembly method of the present invention have the following beneficial effects: By ensuring that the light emitted by each emitting light source in the emitting light source array is transmitted through the optical fiber assembly and illuminates at least two photodetectors in the photodetector array, at least two photodetectors corresponding to the same emitting light source constitute a response photodetector group, and ensuring that the response photodetector groups corresponding to any two different emitting light sources do not overlap, thus eliminating the need for a strict one-to-one correspondence between the emitting light source, the light guide channel, and a single photodetector at a specific position; simultaneously, by identifying the emitting light source corresponding to each response photodetector through timing coding and correlation calculation, a dynamic mapping relationship is established and updated online, maintaining communication continuity even when mapping drift is caused by temperature changes or vibrations, and data can be extracted from the corresponding response photodetector based on the light source identifier. Therefore, the present invention can improve the tolerance of the optical communication structure to manufacturing tolerances, assembly tolerances, and light spot position deviations, reduce coupling alignment accuracy requirements and assembly complexity, and improve assembly efficiency, product yield, and the reliability of the optical communication process. Attached Figure Description

[0050] Figure 1 The diagram shown is a cross-sectional view of an optical communication structure according to an embodiment of the present invention.

[0051] Figure 2 The diagram shown is an enlarged schematic of the cross-section of an optical fiber assembly and the arrangement of its light guiding channels, according to an embodiment of the present invention.

[0052] Figure 3This diagram illustrates the optical communication relationship between the transmitting light source, the fiber core, and the photodetector when the optical fiber assembly is a multi-core optical fiber in one embodiment of the present invention.

[0053] Figure 4 This diagram illustrates the optical communication relationship between the transmitting light source, the independent optical fiber, and the photodetector when the optical fiber assembly is a bundled optical fiber in one embodiment of the present invention.

[0054] Figure 5 The diagram shows a flowchart of the optical communication correspondence establishment method of the present invention.

[0055] Figure 6 This diagram illustrates how, in one embodiment of the present invention, an optical communication correspondence is established without pre-setting a correspondence between the emitting light source and a photodetector at a specific location.

[0056] Figure 7 The diagram shown is a schematic diagram of establishing optical communication correspondence based on grid regions in one embodiment of the present invention.

[0057] Figure 8 The diagram shows a flowchart illustrating the assembly method of the optical communication structure of the present invention.

[0058] Component labeling: 11 Transmitter assembly, 110 First circuit board, 111 Transmitter array, 112 Transmitter, 12 Receiver assembly, 120 Second circuit board, 121 Photodetector array, 122 Photodetector, 123 Grid area, 13 Fiber optic assembly, 131 Transmitter, 132 Receiver, 133 Light guide channel, 134 Multi-core fiber, 135 Fiber core, 136 Independent fiber, 137 Bundled fiber, 14 First transposed coupling optical assembly, 15 Second transposed coupling optical assembly, 16 Light spot, 17 Transmitter housing, 18 Receiver housing, Steps S1~S5, S11~S17. Detailed Implementation

[0059] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0060] Please see Figures 1 to 8It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0061] This embodiment provides an optical communication structure, reference... Figures 1 to 4 The optical communication structure includes:

[0062] The transmitter assembly 11 includes a first circuit board 110 and an array of light sources 111 disposed on the first circuit board 110;

[0063] The receiving end component 12 includes a second circuit board 120 and a photodetector array 121 disposed on the second circuit board 120;

[0064] An optical fiber assembly 13 is disposed between the transmitting end assembly 11 and the receiving end assembly 12. The optical fiber assembly 13 has a transmitting end 131 near the transmitting end assembly 11 and a receiving end 132 near the receiving end assembly 12.

[0065] In this configuration, the light emitted by each of the emitting light sources 112 in the emitting light source array 111 is coupled to at least one light guide channel 133 of the optical fiber assembly 13 and transmitted through the optical fiber assembly 13 to the photodetector array 121, so that the light emitted by each of the emitting light sources 112 illuminates at least two of the photodetectors 122 in the photodetector array 121. The at least two photodetectors 122 corresponding to the same emitting light source 112 constitute the response photodetector group of the emitting light source 112, and the response photodetector groups corresponding to any two different emitting light sources 112 do not overlap.

[0066] The optical communication structure of this embodiment, by having the light emitted by each emitting light source in the emitting light source array be transmitted through the optical fiber assembly and then illuminate at least two photodetectors in the photodetector array, forms a response photodetector group with at least two photodetectors corresponding to the same emitting light source. Furthermore, the response photodetector groups corresponding to any two different emitting light sources are mutually exclusive. This eliminates the need for a strict one-to-one correspondence between the emitting light source, the light guide channel, and a single photodetector at a specific location. This improves the tolerance of the optical communication structure to manufacturing tolerances, assembly tolerances, and light spot position deviations, reduces the coupling alignment accuracy requirements between the emitting light source array, the optical fiber assembly, and the photodetector array, and reduces the need for repeated precision adjustments of each optical component during assembly. Consequently, it reduces the alignment difficulty and assembly complexity of the optical communication structure, and improves assembly efficiency, product yield, and the reliability of the optical communication process.

[0067] As an example, a first transposed coupling optical component 14 is further disposed between the emitting light source array 111 and the emitting end 131 of the optical fiber assembly 13, and a second transposed coupling optical component 15 is further disposed between the receiving end 132 of the optical fiber assembly 13 and the photodetector array 121. The first transposed coupling optical component 14 is used to change the propagation direction of the light emitted by the emitting light source 112 and couple the light with the changed propagation direction to the optical fiber assembly 13; the second transposed coupling optical component 15 is used to change the propagation direction of the light output from the optical fiber assembly 13 and couple the light with the changed propagation direction to the photodetector array 121. Figure 1 The overall assembly relationship of the optical communication structure in this embodiment along the optical path direction is shown in detail. The positional relationships between the first circuit board 110, the second circuit board 120, the optical fiber assembly 13, the first transposed coupling optical assembly 14, and the second transposed coupling optical assembly 15 are highlighted. Therefore, for the sake of clarity and simplicity in the accompanying drawings, Figure 1 The emission light source array 111 and the photodetector array 121 are not shown separately. In the actual structure, the emission light source array 111 is disposed on the side of the first circuit board 110 facing the first transposed coupling optical component 14, and the photodetector array 121 is disposed on the side of the second circuit board 120 facing the second transposed coupling optical component 15. The specific arrangement and optical communication correspondence of the emission light source array 111 and the photodetector array 121 can be found in [reference needed]. Figure 3 and Figure 4 .

[0068] In other embodiments, other structures or methods capable of changing the light propagation direction and achieving optical coupling between the emitting light source array 111, the optical fiber assembly 13, and the photodetector array 121 can also be employed. For example, at least one of the emitting end 131 and the receiving end 132 of the optical fiber assembly 13 can be bent, thereby changing the light propagation direction in the optical fiber assembly 13, so that the end face of the emitting end 131 faces the emitting light source array 111, and / or the end face of the receiving end 132 faces the photodetector array 121, thereby achieving optical coupling between the emitting light source array 111, the optical fiber assembly 13, and the photodetector array 121 without the need for a corresponding transposed coupling optical component. The optical fiber bending method can be set at the emitting end 131 or the receiving end 132 of the optical fiber assembly 13, or simultaneously at both the emitting end 131 and the receiving end 132; the optical fiber bending method can also be used in combination with at least one of the first transposed coupling optical component 14 and the second transposed coupling optical component 15.

[0069] In this embodiment, the emitting light source array 111 includes multiple emitting light sources 112, which can be arranged in a one-dimensional array, a two-dimensional rectangular array, a staggered array, or other manner capable of forming multi-channel light emission. The first circuit board 110 may be provided with a driving circuit for driving the multiple emitting light sources 112 to emit light individually or simultaneously, and may also be provided with a control circuit for controlling the emission sequence, emission duration, and emission intensity. The photodetector array 121 includes multiple photodetectors 122, which can be arranged in a one-dimensional array, a two-dimensional rectangular array, a staggered array, or a high-density surface array. The second circuit board 120 may be provided with a receiving circuit and a signal processing circuit electrically connected to the multiple photodetectors 122, for reading the electrical response signals generated by the multiple photodetectors 122. The number of rows, columns, array spacing, and effective area of ​​the emitting light source array 111 and the photodetector array 121 can be set according to the number of optical communication channels to be transmitted.

[0070] Specifically, such as Figure 1 As shown, the first circuit board 110 and the second circuit board 120 can be arranged relatively spaced apart, and the optical fiber assembly 13 is straddling the transmitting end assembly 11 and the receiving end assembly 12. The first transposed coupling optical assembly 14 is disposed on the light-emitting side of the emitting light source array 111, and is used to change the propagation direction of the light emitted by the plurality of emitting light sources 112, and to converge or project the light after changing the propagation direction onto the emitting end 131 of the optical fiber assembly 13. The second transposed coupling optical assembly 15 is disposed on the light-receiving side of the photodetector array 121, and is used to receive the light output from the receiving end 132 of the optical fiber assembly 13, change the propagation direction of the light, and project the light onto the photodetector array 121. The first transposed coupling optical assembly 14 and the second transposed coupling optical assembly 15 can respectively include a reflective surface, a folding optical surface, a lens, or a combination thereof capable of changing the light propagation direction, as long as the corresponding beam folding and coupling can be achieved. The first transposed coupling optical component 14 and the second transposed coupling optical component 15 can adopt the same structure, or they can adopt different structures according to the beam characteristics of the transmitting end and the receiving end.

[0071] Specifically, such as Figure 2 As shown, the optical fiber assembly 13 includes multiple light guide channels 133. The incident light spot formed by each of the emitting light sources 112 can cover one or more of the light guide channels 133. The light output from one or more of the light guide channels 133 is then expanded, focused, or projected by the second transposed coupling optical assembly 15, thereby forming a light spot 16 (see reference) on the photodetector array 121. Figure 6 and Figure 7The coverage area of ​​the light spot 16 is larger than the light-receiving area of ​​a single photodetector 122, so that the light spot 16 can simultaneously cover at least two photodetectors 122.

[0072] As a further example, in an embodiment employing a preset alignment arrangement, the plurality of photodetectors 122 in the responsive photodetector group can be arranged in different ways according to the shape of the light spot 16 and alignment verification requirements. The responsive photodetector group may include at least two photodetectors 122, which are arranged relatively spaced apart, and the distance between them may be greater than the conventional distance between adjacent photodetectors 122 in the photodetector array 121, so that the light spot 16 simultaneously covers both photodetectors 122 in the aligned state. The responsive photodetector group may also include four photodetectors 122, which are respectively disposed at the four vertices of a quadrilateral; or, the plurality of photodetectors 122 in the responsive photodetector group may be arranged along a hexagon or circle. In embodiments arranged along a hexagon or circle, at least one photodetector 122 located in the center may also be disposed within the area enclosed by the plurality of photodetectors 122 located at the edges.

[0073] As a further example, the alignment of the light spot 16 with the response photodetector group can be verified based on the light intensity received by each photodetector 122 in the response photodetector group. Response photodetector groups with different arrangements may have different expected light intensity distributions in the aligned state. For a response photodetector group including two photodetectors 122, or a response photodetector group including four photodetectors 122 arranged in a quadrilateral, when the light spot 16 is aligned, the light intensity received by each photodetector 122 is essentially the same. For example, if the first photodetector receives a first light intensity and the second photodetector receives a second light intensity, when the absolute value of the difference between the first light intensity and the second light intensity is less than or equal to a preset light intensity difference threshold, it can be determined that the light spot 16 is aligned with the corresponding response photodetector group. For a group of photodetectors arranged in a hexagonal or circular pattern, including the photodetector 122 located in the center, when the light spot 16 is aligned, the light intensity received by the photodetector 122 located in the center is greater than the light intensity received by the photodetectors 122 located at the edges, and the light intensity received by each of the photodetectors 122 located at the edges is substantially the same. When the absolute value of the difference in light intensity received by any two photodetectors 122 located at the edges is less than or equal to the preset light intensity difference threshold, and the light intensity received by the photodetector 122 located in the center is greater than the light intensity received by the photodetectors 122 located at the edges, it can be determined that the light spot 16 is aligned with the corresponding group of photodetectors.

[0074] As an example, the emitting light source 112 can be a micro-LED or a vertical-cavity surface-emitting laser (VCSEL). The micro-LEDs can be formed into a high-density array and individually driven and controlled, and the VCSELs can also be arranged in an array on the first circuit board 110. For ease of explanation, the following description mainly refers to the emitting light source 112 as the micro-LED.

[0075] As an example, the photodetector 122 can be an avalanche photodiode (APD) or a P-type intrinsic-N-type photodiode (PIN photodiode). Other types of photodetectors can also be selected based on the receiving sensitivity and array position, provided that the corresponding response information can be obtained.

[0076] As an example, such as Figure 3 As shown, the optical fiber assembly 13 is a multi-core optical fiber 134, and one fiber core 135 of the multi-core optical fiber 134 constitutes a light guiding channel 133; the light emitted by each of the emitting light sources 112 in the emitting light source array 111 is coupled to at least two fiber cores 135 in the multi-core optical fiber 134.

[0077] Specifically, the number of fiber cores 135 covered by the incident light spot can be determined based on the spot size of the emitting light source 112, the spacing between adjacent fiber cores 135, and the beam adjustment parameters of the first transposed coupling optical component 14. Therefore, the same emitting light source 112 does not need to be precisely aligned with each individual fiber core 135; it is sufficient that the incident light spot can stably cover multiple fiber cores 135 within a predetermined range.

[0078] In other embodiments, such as Figure 4 As shown, the optical fiber assembly 13 can also be a bundled optical fiber 137, which includes multiple independent optical fibers 136, and one of the independent optical fibers 136 constitutes a light guiding channel 133; the light emitted by each of the emitting light sources 112 in the emitting light source array 111 is coupled to one of the independent optical fibers 136 in the bundled optical fiber 137.

[0079] Specifically, multiple independent optical fibers 136 can be arranged side-by-side, stacked, or closely arranged and fixed together to form the bundled optical fiber 137. The light-incident end face size of each independent optical fiber 136 can be set to be sufficient to accommodate an incident light spot formed by one of the emitting light sources 112 through the first transposed coupling optical component 14, so that the incident light spot is located within the light-incident end face range of the corresponding independent optical fiber 136. Compared with the multi-core optical fiber 134, in the embodiment of the bundled optical fiber 137, one emitting light source 112 corresponds to one independent optical fiber 136, but the light output from the independent optical fiber 136, after being projected by the second transposed coupling optical component 15, still corresponds to illuminating at least two photodetectors 122. Therefore, a channel-level correspondence can be established between the independent optical fiber 136 and the emitting light source 112, while a one-to-many optical communication correspondence is still formed between the emitting light source 112 and the photodetector 122.

[0080] Since each of the emitting light sources 112 corresponds to at least two photodetectors 122, and the response photodetector groups corresponding to different emitting light sources 112 do not overlap, the number of photodetectors 122 can be more than twice the number of emitting light sources 112. The photodetector array 121 allows for photodetectors 122 that are not assigned to any of the response photodetector groups. Unassigned photodetectors 122 may not participate in the current optical communication process, or they may serve as backup receiving points when re-establishing the optical communication correspondence. Using a large number of densely arranged photodetectors 122 allows the light spot 16 to shift within a certain range without requiring the center of the light spot 16 to strictly coincide with the center of a single photodetector 122.

[0081] This embodiment also provides a method for establishing optical communication correspondences, which can be used to establish the optical communication correspondences of the optical communication structure of the present invention. See details below. Figures 5 to 7 The method for establishing the optical communication correspondence includes:

[0082] S1 provides the optical communication structure for establishing the optical communication correspondence, for reference. Figures 1 to 3 The optical communication structure includes a transmitter assembly 11, a receiver assembly 12, and an optical fiber assembly 13 disposed between the transmitter assembly 11 and the receiver assembly 12. The transmitter assembly 11 includes a light source array 111, and the receiver assembly 12 includes a photodetector array 121.

[0083] S2, control the multiple emitting light sources 112 in the emitting light source array 111 to emit light;

[0084] S3, the light emitted by the multiple emission sources 112 is detected by the photodetector array 121, and the response information generated by the photodetector array 121 for the multiple emission sources 112 is obtained respectively;

[0085] S4, based on the response information, determine at least two response photodetectors 122 corresponding to each of the plurality of emission light sources 112, and determine the at least two response photodetectors 122 corresponding to the same emission light source 112 as the response photodetector group of that emission light source 112; and

[0086] S5, based on the plurality of emitting light sources 112 and their corresponding response photodetector groups, establish an optical communication correspondence between the emitting light source array 111 and the photodetector array 121; wherein, in the optical communication correspondence, each emitting light source 112 in the emitting light source array 111 corresponds to one response photodetector group, and the response photodetector groups corresponding to any two different emitting light sources 112 do not overlap.

[0087] The optical communication correspondence establishment method of this embodiment can be used to establish the optical communication correspondence of the optical communication structure of the present invention. By controlling multiple emitting light sources in the emitting light source array to emit light, the light emitted by each emitting light source is detected by the photodetector array and the corresponding response information is obtained. Based on the response information, at least two response photodetectors corresponding to each emitting light source are determined. At least two response photodetectors corresponding to the same emitting light source are determined as a response photodetector group, and a mapping relationship between each emitting light source and the corresponding response photodetector group is established. At the same time, the response photodetector groups corresponding to different emitting light sources do not overlap with each other. Therefore, it is not necessary to predefine the strict one-to-one correspondence between the emitting light source, the light guide channel and the single photodetector at a specific position. It can establish an identifiable optical communication correspondence based on the actual optical signal transmission results, reducing the coupling alignment accuracy requirements and the difficulty of establishing the correspondence of the optical communication structure.

[0088] In the first implementation method, such as Figure 6 As shown, the optical communication correspondence is established without pre-setting specific receiving positions. For ease of description, each transmitting light source 112 can be numbered according to its row and column position in the transmitting light source array 111, and the corresponding transmitting light source 112 can be represented by its transmission point (TX). For example, Figure 6 The diagram illustrates emitting light sources TX00, TX03, TX30, and TX33. Correspondingly, the response photodetector groups determined based on the actual response information can be represented by the receive response position (RX), for example, response photodetector groups RX00, RX03, RX30, and RX33. It should be noted that RX00, RX03, RX30, and RX33 are logical identifiers assigned to the respective response photodetector groups after response detection is completed, and do not indicate that fixed receive coordinates in the photodetector array 121 were assigned to the corresponding emitting light source 112 before detection.

[0089] The method for controlling the emission of multiple emission sources 112 in the emission source array 111 includes: controlling each emission source 112 in the emission source array 111 to emit light sequentially; the method for establishing an optical communication correspondence between the emission source array 111 and the photodetector array 121 includes: without pre-setting a correspondence between each emission source 112 and a photodetector 122 at a specific position, determining the response photodetector group corresponding to each emission source 112 based on the response information obtained when each emission source 112 emits light sequentially, and establishing a mapping relationship between each emission source 112 and the corresponding response photodetector group.

[0090] Specifically, the emitting light source TX00 can be controlled to emit light first, so that the light emitted by the emitting light source TX00 is transmitted through the optical fiber assembly 13 and forms a light spot 16 on the photodetector array 121. The actual response generated by the photodetector array 121 is read, and at least two photodetectors 122 that generate an electrical response are identified as the response photodetector group RX00 corresponding to the emitting light source TX00. Then, the emitting light source TX00 is turned off, and the emitting light sources TX03, TX30, and TX33 are controlled to emit light in sequence. The corresponding response photodetector groups RX03, RX30, and RX33 are determined according to the actual response generated by the photodetector array 121, respectively. For the remaining emitting light sources 112 in the emitting light source array 111, detection and recording can be performed in the same manner until the response detection of each emitting light source 112 is completed. The above method does not require that a certain transmitting light source 112 must correspond to a certain fixed coordinate in the photodetector array 121 before detection. Even if there is a certain positional deviation between the transmitting light source array 111, the optical fiber assembly 13, or the photodetector array 121, the usable receiving position can be determined through actual detection, thereby reducing the requirement for precise alignment of specific points.

[0091] In the second implementation method, such as Figure 7 As shown, the photodetector array 121 is pre-divided into multiple grid regions 123, and each grid region 123 is provided with at least two photodetectors 122. The multiple grid regions 123 correspond one-to-one with the multiple emitting light sources 112 in the emitting light source array 111. For ease of description, each emitting light source 112 can be numbered according to its row and column position in the emitting light source array 111, and the corresponding emitting light source 112 can be represented by its emission point (TX). Similarly, each grid region 123 can be numbered according to its row and column position in the photodetector array 121, and the corresponding grid region 123 can be represented by its receiving grid region (RX). For example, Figure 7The image exemplifies light sources TX00, TX03, TX30, and TX33, and their corresponding pre-defined grid regions RX00, RX03, RX30, and RX33. Specifically, light source TX00 is pre-corresponding to grid region RX00, light source TX03 to grid region RX03, light source TX30 to grid region RX30, and light source TX33 to grid region RX33. The remaining light sources 112 in the light source array 111 can be corresponding to the remaining grid regions 123 using the same row and column numbering method.

[0092] The method for establishing the optical communication correspondence between the emitting light source array 111 and the photodetector array 121 includes: adjusting the position of at least one of the emitting light source array 111, the optical fiber assembly 13, and the photodetector array 121 relative to the other two; during the adjustment process, controlling the emission of multiple emitting light sources 112 and detecting the light emitted by multiple emitting light sources 112 through the photodetector array 121 until the light spot 16 formed by the light emitted by each emitting light source 112 on the photodetector array 121 is located within the grid region 123 pre-corresponding to the emitting light source 112; determining at least two photodetectors 122 that generate an electrical response within the corresponding grid region 123 as the response photodetector group of the emitting light source 112, and establishing a mapping relationship between each emitting light source 112 and the corresponding response photodetector group.

[0093] Specifically, the emitting light source TX00 can be controlled to emit light, and it can be detected whether the light spot 16 formed on the photodetector array 121 by the light emitted by the emitting light source TX00 is located within the grid region RX00 corresponding to it in advance; the emitting light sources TX03, TX30, and TX33 can be controlled to emit light in the same way, and it can be detected whether the corresponding light spot 16 is located within the grid region RX03, the grid region RX30, and the grid region RX33, respectively. If any light spot 16 deviates from the corresponding grid region 123, the position of at least one of the emitting light source array 111, the fiber optic assembly 13, and the photodetector array 121 is adjusted relative to the other two, until the light spots 16 corresponding to the emitting light sources TX00, TX03, TX30, and TX33 are located within the grid regions RX00, RX03, RX30, and RX33, respectively. For the remaining light sources 112 in the light source array 111, the corresponding light spot 16 can be detected in the same way, and at least two photodetectors 122 that generate an electrical response in the corresponding grid region 123 are identified as the response photodetector group of the light source 112.

[0094] Specifically, in this embodiment, the plurality of grid regions 123 can be regular grid regions of the same shape and size, and can be arranged in rows and columns corresponding to the emitting light source array 111. In other embodiments, the plurality of grid regions 123 can also be set to different sizes or shapes according to the distribution of the light spots 16, the arrangement density of the photodetectors 122, or the shape of the array edge. This embodiment only requires that each light spot 16 falls into the grid region 123 pre-corresponding to the corresponding emitting light source 112, and does not require that the center of the light spot 16 precisely coincides with the center of the grid region 123 or the center of a certain photodetector 122. By converting precise point alignment into area alignment, the allowable positional error range can be increased while ensuring that the light spots 16 corresponding to different emitting light sources 112 are confined within different grid regions 123.

[0095] Specifically, during position adjustment, the emitting light source array 111 and the photodetector array 121 can be kept fixed while the fiber optic assembly 13 is adjusted; alternatively, one end of the fiber optic assembly 13 can be fixed while the other end is adjusted; or the position of the first circuit board 110 or the second circuit board 120 can be finely adjusted. Position adjustment may include translation adjustment, rotation adjustment, or a combination of both.

[0096] In the third embodiment, the optical communication correspondence establishment method uses time-series coding and correlation calculation to identify each of the transmitting light sources 112 and the corresponding response photodetector 122, and establishes a dynamically updated mapping relationship.

[0097] The transmitting end component 11 further includes a timing coding driving module, and the receiving end component 12 further includes a signal decoding module and a mapping processing module;

[0098] When the optical communication structure is powered on for initialization or reset, the timing coding driving module assigns a unique light source identifier to each of the transmitting light sources 112, and uses the pseudo-random sequence corresponding to each light source identifier as the timing code of each of the transmitting light sources 112.

[0099] Each of the emitting light sources 112 is controlled to emit light according to the corresponding timing code;

[0100] The light emitted by each of the emission light sources 112 is detected by the photodetector array 121, and the correlation calculation is performed between the response information generated by each of the photodetectors 122 and the multiple pre-stored timing codes by the signal decoding module.

[0101] When the result of the correlation calculation meets the preset conditions, the emission source 112 corresponding to each of the response photodetectors 122 is determined;

[0102] The mapping processing module establishes and maintains a dynamic mapping relationship between each of the emission light sources 112 and the corresponding response photodetector group based on the result of the correlation calculation.

[0103] When the optical communication structure is operating normally, the changes in the response information are monitored through the mapping processing module; and

[0104] When it is determined that the dynamic mapping relationship has changed based on the change in the response information, the dynamic mapping relationship is updated.

[0105] Specifically, the timing encoding driving module can be located on the first circuit board 110, and the signal decoding module and the mapping processing module can be located on the second circuit board 120, or integrated into the processing chip. Each timing code is distinct from the others, enabling the signal decoding module to identify the corresponding transmitting light source 112 based on the response information.

[0106] As a further example, the preset condition includes: the correlation peak of the response information generated by the response photodetector 122 and a timing code is continuously greater than a preset correlation threshold for a preset duration.

[0107] Specifically, by simultaneously limiting the correlation output peak, preset duration, and preset correlation threshold, erroneous identification caused by instantaneous noise or optical signal fluctuations can be reduced.

[0108] As a further example, the dynamic mapping relationship includes the correspondence between each of the response photodetectors 122 and the light source identifier of the corresponding emission light source 112, as well as at least one of the position information, response intensity, and correlation confidence of the response photodetector 122.

[0109] Specifically, the dynamic mapping relationship can be stored in the form of a mapping table, and the correspondence between each of the emitting light sources 112 and the corresponding response photodetector 122 can be recorded.

[0110] As a further example, monitoring changes in the response information includes monitoring at least one of the response intensity, signal-to-noise ratio, and correlation output peak of each of the response photodetectors 122.

[0111] Specifically, the mapping processing module can monitor the above parameters according to a preset period to determine whether the state of the optical signal received by each of the response photodetectors 122 has changed.

[0112] As a further example, when the change in at least one of the response intensity, the signal-to-noise ratio, and the correlation output peak satisfies a preset update condition, it is determined that the dynamic mapping relationship has changed, and the dynamic mapping relationship is automatically updated by the mapping processing module.

[0113] Specifically, the mapping processing module can redetermine the emitting light source 112 corresponding to the changed response photodetector 122 and update the corresponding entries in the dynamic mapping relationship.

[0114] As a further example, when the correspondence between each of the emitting light sources and the corresponding response photodetector group changes due to temperature changes or vibration, the mapping processing module updates the dynamic mapping relationship without interrupting optical communication.

[0115] Specifically, temperature changes or vibrations may cause changes in the relative positions of the transmitting end component 11, the optical fiber component 13, or the receiving end component 12, and the mapping processing module can update the dynamic mapping relationship during normal communication.

[0116] As a further example, the optical communication correspondence establishment method further includes: querying the dynamic mapping relationship based on the light source identifier of the transmitting light source 112 carrying the data to be received, and extracting the data to be received from the response photodetector 122 corresponding to the transmitting light source 112.

[0117] Specifically, when one of the emission light sources 112 corresponds to multiple response photodetectors 122, data can be extracted from the response photodetectors 122 with higher response intensity or correlation confidence, or the response information generated by multiple response photodetectors 122 can be merged.

[0118] This embodiment also provides a method for assembling an optical communication structure, such as... Figure 8 As shown, the assembly method includes:

[0119] S11, providing a transmitter assembly 11, a receiver assembly 12, an optical fiber assembly 13, a transmitter housing 17, and a receiver housing 18, wherein the transmitter assembly 11 includes a first circuit board 110 and a light source array 111 disposed on the first circuit board 110, and the receiver assembly 12 includes a second circuit board 120 and a photodetector array 121 disposed on the second circuit board 120;

[0120] S12, the optical fiber assembly 13 is disposed between the transmitting end assembly 11 and the receiving end assembly 12, such that the transmitting end 131 of the optical fiber assembly 13 is disposed inside the transmitting end housing 17, and the end face of the transmitting end 131 of the optical fiber assembly 13 faces the light-emitting side of the emitting light source array 111, and the receiving end 132 of the optical fiber assembly 13 is disposed inside the receiving end housing 18, and the end face of the receiving end 132 of the optical fiber assembly 13 faces the light-receiving side of the photodetector array 121.

[0121] S13, one of the transmitting end 131 and the receiving end 132 of the optical fiber assembly 13 is designated as the positioning end, and the other is designated as the adjustment end; the position of the positioning end is adjusted so that the end face of the positioning end is aligned with the corresponding transmitting light source array 111 or the photodetector array 121 along the optical path, and the positioning end is fixed to the corresponding transmitting end housing 17 or the receiving end housing 18. When the positioning end is the transmitting end 131 of the optical fiber assembly 13, the corresponding element is the transmitting light source array 111; when the positioning end is the receiving end 132 of the optical fiber assembly 13, the corresponding element is the photodetector array 121.

[0122] S14, the adjustment end is rotatably disposed on the corresponding transmitter housing 17 or receiver housing 18;

[0123] S15, while keeping the positioning end fixed, power on the transmitting end assembly 11 and the receiving end assembly 12, control the transmitting light source 112 in the transmitting light source array 111 to emit light, and at the same time, rotate the adjustment end relative to the corresponding transmitting end assembly 11 or the receiving end assembly 12 so that the light emitted by the transmitting light source 112 is coupled to the optical fiber assembly 13 and transmitted to the photodetector array 121 through the optical fiber assembly 13. During the rotation of the adjustment end, the electrical response signal generated by the photodetector array 121 is detected.

[0124] S16, adjust the rotation position of the adjustment end according to the electrical response signal until, for each of the emitting light sources 112, at least one photodetector 122 generates the electrical response signal corresponding to that emitting light source 112, and determine the rotation position of the adjustment end when this condition is met as the target rotation position; and

[0125] S17, keep the adjustment end in the target rotation position, and fix the adjustment end to the corresponding transmitter housing 17 or receiver housing 18.

[0126] As an example, when the optical communication structure further includes a first transposed coupling optical component 14 and a second transposed coupling optical component 15, the assembly method further includes: fixing the first transposed coupling optical component 14 to the light-emitting side of the emitting light source array 111, fixing the second transposed coupling optical component 15 to the light-receiving side of the photodetector array 121, and making the transmitting end 131 and the receiving end 132 of the optical fiber component 13 face the first transposed coupling optical component 14 and the second transposed coupling optical component 15, respectively.

[0127] The assembly method of this embodiment can be used in an assembly structure where one of the emitting light sources corresponds to one photodetector, or in an assembly structure where one of the emitting light sources corresponds to at least two photodetectors. Therefore, the assembly method of this embodiment can be used to assemble the optical communication structure of the present invention, but is not limited thereto. The beneficial effects it can achieve can be found in the specific description of the optical communication structure, which will not be repeated here.

[0128] It should be noted that the numbering of steps S11 to S17 is only used to distinguish each assembly step and does not constitute a limitation on the execution order of each step; provided that the assembly logic is not violated and the corresponding assembly and alignment relationships can be achieved, the execution order of each step can be adjusted, executed synchronously, executed in combination, executed separately, or executed repeatedly.

[0129] In one assembly method, the transmitting end 131 can be used as the positioning end. First, the position of the transmitting end 131 is adjusted so that its end face is aligned with the light-emitting side of the emitting light source array 111 along the optical path, and the transmitting end 131 is fixed to the transmitting end housing 17. Then, the receiving end 132 is used as the adjustment end, and it is made able to rotate relative to the receiving end assembly 12. After powering on the transmitting end assembly 11 and the receiving end assembly 12, the emitting light source array 111 is controlled to emit light, and while reading the electrical response signal of the photodetector array 121, the receiving end 132 is rotated until the target rotation position is reached. Then, glue, fasteners, or other fixing materials are used to fix the receiving end housing 18. This rotational adjustment can compensate for the circumferential twist generated when the fiber optic assembly 13 connects the transmitting and receiving ends, ensuring that the light emission positions of the multiple emitting light sources 112 after transmission through the fiber optic assembly 13 are adapted to the photodetector array 121.

[0130] In another assembly method, the receiving end 132 can be used as the positioning end. First, the receiving end 132 is adjusted and fixed so that its end face is aligned with the light-receiving side of the photodetector array 121 along the optical path. Then, the transmitting end 131 is used as the adjustment end, rotating relative to the transmitting end assembly 11. The target rotation position is determined based on the electrical response signal generated by the photodetector array 121. Finally, the transmitting end 131 is fixed to the transmitting end housing 17. The positioning directions of the two assembly methods are opposite, but both reduce the impact of the circumferential torsion of the fiber optic assembly 13 on the array correspondence by fixing one end of the fiber optic assembly 13 and rotating to adjust the other end.

[0131] In summary, the optical communication structure and the method for establishing and assembling optical communication correspondences of the present invention, by ensuring that the light emitted by each emitting light source is transmitted through an optical fiber assembly and illuminates at least two photodetectors, divides at least two photodetectors corresponding to the same emitting light source into response photodetector groups, and ensures that the response photodetector groups corresponding to different emitting light sources do not overlap, thereby realizing an identifiable optical communication correspondence between the emitting light source array and the photodetector array; simultaneously, a corresponding mapping relationship can be established based on the correlation calculation of actual response information, pre-divided grid regions, or time-series coding, and the dynamic mapping relationship can be monitored online and automatically updated through a mapping processing module, maintaining uninterrupted optical communication when temperature changes or vibrations cause mapping drift; when it is necessary to receive data from a specific emitting light source, data can be extracted from the corresponding response photodetector based on the light source identifier, realizing transparent transmission from physically disordered to logically ordered. Furthermore, during assembly, one end of the optical fiber assembly can be fixed while the other end is rotated for adjustment. The target rotation position is determined based on the electrical response signal generated by the photodetector array. This eliminates the need for a strict one-to-one correspondence between the emitting light source, the light guide channel, and individual photodetectors at specific positions. This improves the tolerance of the optical communication structure to manufacturing tolerances, assembly tolerances, and spot position deviations, reduces the requirements for optical coupling alignment accuracy and assembly difficulty, minimizes repeated precision adjustments, enhances the flexibility and accuracy of establishing optical communication correspondences, and improves assembly efficiency, product yield, and the reliability of the optical communication process. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0132] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An optical communication structure, characterized in that, The optical communication structure includes: The transmitter assembly includes a first circuit board and an array of emitting light sources disposed on the first circuit board; The receiving end component includes a second circuit board and a photodetector array disposed on the second circuit board; An optical fiber assembly is disposed between the transmitting end assembly and the receiving end assembly, the optical fiber assembly having a transmitting end near the transmitting end assembly and a receiving end near the receiving end assembly. In this configuration, the light emitted by each of the emitting light sources in the emitting light source array is coupled to at least one light guide channel of the optical fiber assembly and transmitted through the optical fiber assembly to the photodetector array, so that the light emitted by each emitting light source illuminates at least two photodetectors in the photodetector array; wherein at least two photodetectors corresponding to the same emitting light source constitute a response photodetector group for that emitting light source, and the response photodetector groups corresponding to any two different emitting light sources do not overlap.

2. The optical communication structure according to claim 1, characterized in that: The light source is either Micro-LED or VCSEL.

3. The optical communication structure according to claim 1, characterized in that: The photodetector is an avalanche photodiode or a PIN photodiode.

4. The optical communication structure according to claim 1, characterized in that: The optical fiber assembly is a multi-core optical fiber, and one core of the multi-core optical fiber constitutes a light guiding channel; the light emitted by each of the emitting light sources in the emitting light source array is coupled to at least two cores of the multi-core optical fiber.

5. The optical communication structure according to claim 1, characterized in that: The optical fiber assembly is a bundled optical fiber, which includes multiple independent optical fibers, and one of the independent optical fibers constitutes a light guiding channel. The light emitted by each of the light sources in the light source array is coupled to one of the individual optical fibers in the bundled optical fibers.

6. A method for establishing optical communication correspondence, characterized in that, The method for establishing optical communication correspondence includes: An optical communication structure is provided to establish an optical communication correspondence. The optical communication structure includes a transmitter component, a receiver component, and an optical fiber component disposed between the transmitter component and the receiver component. The transmitter component includes a transmitting light source array, and the receiver component includes a photodetector array. Control the emission of multiple emission sources in the emission source array to emit light; The photodetector array detects the light emitted by multiple emission sources and obtains the response information generated by the photodetector array for each of the multiple emission sources. Based on the response information, at least two response photodetectors corresponding to each of the plurality of emission sources are determined, and at least two response photodetectors corresponding to the same emission source are determined as the response photodetector group for that emission source; and Based on the plurality of emitting light sources and their corresponding response photodetector groups, an optical communication correspondence is established between the emitting light source array and the photodetector array; wherein, in the optical communication correspondence, each emitting light source in the emitting light source array corresponds to one response photodetector group, and the response photodetector groups corresponding to any two different emitting light sources do not overlap.

7. The method for establishing optical communication correspondence according to claim 6, characterized in that, The method for controlling the emission of multiple emission light sources in the emission light source array includes: controlling each of the emission light sources in the emission light source array to emit light sequentially; The method for establishing the optical communication correspondence between the emitting light source array and the photodetector array includes: without pre-setting the correspondence between each emitting light source and the photodetector at a specific position, determining the response photodetector group corresponding to each emitting light source based on the response information obtained when each emitting light source emits light sequentially, and establishing a mapping relationship between each emitting light source and the corresponding response photodetector group.

8. The method for establishing optical communication correspondence according to claim 6, characterized in that, The photodetector array is pre-divided into multiple grid regions, and at least two photodetectors are arranged in each grid region. The multiple grid regions correspond one-to-one with the multiple emission sources in the emission source array. The method for establishing the optical communication correspondence between the emitting light source array and the photodetector array includes: Adjust the position of at least one of the emission light source array, the optical fiber assembly, and the photodetector array relative to the other two, and during the adjustment process, control the emission of multiple emission light sources and detect the light emitted by multiple emission light sources through the photodetector array until the light spot formed by the light emitted by each emission light source on the photodetector array is located in the grid area pre-corresponding to the emission light source. At least two photodetectors that generate an electrical response within the corresponding grid region are identified as the response photodetector group of the emitting light source, and a mapping relationship is established between each emitting light source and the corresponding response photodetector group.

9. The method for establishing optical communication correspondence according to claim 6, characterized in that: The transmitting end component further includes a timing coding driving module, and the receiving end component further includes a signal decoding module and a mapping processing module; When the optical communication structure is powered on for initialization or reset, the timing coding driver module assigns a unique light source identifier to each of the transmitting light sources, and uses the pseudo-random sequence corresponding to each light source identifier as the timing code for each of the transmitting light sources. Control each of the emission light sources to emit light according to the corresponding timing code; The light emitted by each of the emission sources is detected by the photodetector array, and the correlation calculation is performed between the response information generated by each of the photodetectors and a plurality of pre-stored time-series codes by the signal decoding module. When the result of the correlation calculation meets the preset conditions, the emission source corresponding to each of the response photodetectors is determined; The mapping processing module establishes and maintains a dynamic mapping relationship between each of the emission light sources and the corresponding response photodetector group based on the result of the correlation calculation. When the optical communication structure is working normally, the changes in the response information are monitored by the mapping processing module; as well as When it is determined that the dynamic mapping relationship has changed based on the change in the response information, the dynamic mapping relationship is updated.

10. The method for establishing optical communication correspondence according to claim 9, characterized in that, The preset conditions include: the correlation peak value between the response information generated by the response photodetector and a time-series code is continuously greater than a preset correlation threshold for a preset duration.

11. The method for establishing optical communication correspondence according to claim 9, characterized in that: The dynamic mapping relationship includes the correspondence between each of the response photodetectors and the corresponding light source identifier of the emitting light source, as well as at least one of the position information, response intensity, and correlation confidence of the response photodetector.

12. The method for establishing optical communication correspondence according to claim 9, characterized in that: Monitoring changes in the response information includes monitoring at least one of the response intensity, signal-to-noise ratio, and correlation output peak values ​​of each of the response photodetectors.

13. The method for establishing optical communication correspondence according to claim 12, characterized in that: When the change in at least one of the response intensity, the signal-to-noise ratio, and the correlation output peak satisfies a preset update condition, it is determined that the dynamic mapping relationship has changed, and the dynamic mapping relationship is automatically updated by the mapping processing module.

14. The method for establishing optical communication correspondence according to claim 13, characterized in that, When the correspondence between each of the emitting light sources and the corresponding response photodetector group changes due to temperature changes or vibration, the mapping processing module updates the dynamic mapping relationship without interrupting optical communication.

15. The method for establishing optical communication correspondence according to claim 9, characterized in that, Also includes: The dynamic mapping relationship is queried based on the light source identifier of the transmitting light source carrying the data to be received, and the data to be received is extracted from the response photodetector corresponding to the transmitting light source.

16. A method for assembling an optical communication structure, characterized in that, The assembly method includes: A transmitter assembly, a receiver assembly, an optical fiber assembly, a transmitter housing, and a receiver housing are provided. The transmitter assembly includes a first circuit board and an array of emitting light sources disposed on the first circuit board. The receiver assembly includes a second circuit board and an array of photodetectors disposed on the second circuit board. The optical fiber assembly is disposed between the transmitting end assembly and the receiving end assembly, with the transmitting end of the optical fiber assembly disposed inside the transmitting end housing and the end face of the transmitting end of the optical fiber assembly facing the light-emitting side of the light-emitting light source array, and the receiving end of the optical fiber assembly disposed inside the receiving end housing and the end face of the receiving end of the optical fiber assembly facing the light-receiving side of the photodetector array. One of the transmitting end and the receiving end of the optical fiber assembly is designated as the positioning end, and the other is designated as the adjustment end. The position of the positioning end is adjusted so that the end face of the positioning end is aligned with the corresponding transmitting light source array or the photodetector array along the optical path, and the positioning end is fixed to the corresponding transmitting end housing or the receiving end housing. When the positioning end is the transmitting end of the optical fiber assembly, the corresponding element is the transmitting light source array; when the positioning end is the receiving end of the optical fiber assembly, the corresponding element is the photodetector array. The adjustment end is rotatably mounted on the corresponding transmitter housing or receiver housing; While keeping the positioning end fixed, power is applied to the transmitting end assembly and the receiving end assembly, and the emitting light source in the emitting light source array is controlled to emit light. At the same time, the adjusting end is rotated relative to the corresponding transmitting end assembly or receiving end assembly, so that the light emitted by the emitting light source is coupled to the optical fiber assembly and transmitted to the photodetector array through the optical fiber assembly. During the rotation of the adjusting end, the electrical response signal generated by the photodetector array is detected. The rotation position of the adjustment end is adjusted according to the electrical response signal until, for each of the emitting light sources, at least one photodetector generates an electrical response signal corresponding to that emitting light source, and the rotation position of the adjustment end when this condition is met is determined as the target rotation position; and Keep the adjustment end in the target rotation position and fix the adjustment end to the corresponding transmitter housing or receiver housing.

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