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CN-119414533-B - Coupling system, method and related equipment for multichannel optical fiber array and waveguide

CN119414533BCN 119414533 BCN119414533 BCN 119414533BCN-119414533-B

Abstract

The invention discloses a coupling system, a method and related equipment of a multichannel optical fiber array and a waveguide, wherein the method comprises the steps of adopting a first group of infrared lasers to scan a waveguide coupling surface on a printed circuit board to obtain first plane data; the method comprises the steps of scanning a coupling surface of a multichannel optical fiber array by a second group of infrared lasers to obtain second plane data, determining a plane included angle according to the first plane data and the second plane data, generating an adjusting coupling strategy by adopting a coupling algorithm based on the plane included angle, and executing the adjusting coupling strategy to perform coupling adjustment on the multichannel optical fiber array and the waveguide. The method and the device have the advantages that two planes to be coupled are scanned through infrared laser, plane data are obtained, and the plane angle is calculated, so that the precision of the plane angle is improved, and the coupling efficiency is improved.

Inventors

  • WU TAOTAO

Assignees

  • 深圳市聚飞光电股份有限公司

Dates

Publication Date
20260512
Application Date
20241031

Claims (8)

  1. 1. A coupling system of a multichannel optical fiber array and a waveguide is characterized by comprising an adjusting frame, a printed circuit board clamping device, an infrared laser scanning device and a control system, wherein the adjusting frame, the infrared laser scanning device and the control system are electrically connected, The adjusting frame comprises clamping jaws, the clamping jaws are used for fixing the multichannel optical fiber array, and the adjusting frame is used for adjusting the positions of the multichannel optical fiber array; The clamping device comprises a printed circuit board, a base limiting groove and a photoelectric conversion chip, wherein the base limiting groove is used for fixing the printed circuit board, the photoelectric conversion chip is arranged on the printed circuit board, and the photoelectric conversion chip comprises a waveguide; The printed circuit board clamping device comprises a waveguide coupling surface, wherein the waveguide coupling surface is the surface of a printed circuit board facing an adjusting frame or the surface of a photoelectric conversion chip facing the adjusting frame, the infrared laser scanning device is used for scanning the waveguide coupling surface of the printed circuit board clamping device, meanwhile, scanning the coupling surface of the multichannel optical fiber array to obtain plane scanning data of two coupling surfaces and sending the plane scanning data to the control system, the infrared laser scanning device comprises at least two groups, a first group of infrared lasers is used for scanning the waveguide coupling surface of the printed circuit board clamping device, and a second group of infrared lasers is used for scanning the coupling surface of the multichannel optical fiber array; The control system receives plane scanning data sent by the infrared laser scanning device, generates an adjustment coupling strategy, and controls the adjusting frame to adjust and couple the multichannel optical fiber array based on the adjustment coupling strategy; The method for obtaining the first plane data comprises the following steps of: Setting a coordinate origin M 0 (X 0 ,Y 0 ,Z 0 by taking the first group of infrared lasers as a reference; Scanning a waveguide coupling surface clamped by a printed circuit board, and respectively recording coordinates M n （X n ,Y n ,Z n ) of K points by taking the origin of coordinates as a reference, wherein n is E [1, K ], and n is a positive integer; based on the coordinates of the K points, fitting calculation is carried out to obtain a plane equation, and the plane equation is used as the first plane data; the control system receives the plane scanning data sent by the infrared laser scanning device and generates an adjustment coupling strategy, which comprises the following steps: Scanning a waveguide coupling surface clamped by a printed circuit board by adopting a first group of infrared lasers, recording first plane data by adopting a plane equation A1x+B1y+C1z+D1=0, scanning a coupling surface of the multi-channel optical fiber array by adopting a second group of infrared lasers, recording second plane data by adopting a plane equation A2x+B2y+C2z+D2=0, and calculating an angle between two planes by utilizing normal vectors of 2 plane equations to serve as a plane included angle; based on the plane included angle, a coupling algorithm is adopted to generate an adjusting coupling strategy.
  2. 2. The coupling system of a multi-channel fiber array and a waveguide of claim 1, wherein the control system comprises a signal receiving unit, a computing unit, a policy generating unit, and an adjustment control unit; The signal receiving unit is used for receiving the plane scanning data sent by the infrared laser scanning device; the calculating unit is used for carrying out angle calculation according to the received plane scanning data to obtain a plane angle; the strategy generating unit generates an adjusting coupling strategy according to the plane angle; and the adjusting control unit controls the adjusting frame to adjust and couple the multichannel optical fiber array by adopting the adjusting coupling strategy.
  3. 3. The coupling system of a multi-channel fiber array and waveguide of claim 1, wherein the infrared laser scanning device comprises at least two sets of infrared lasers, a first set of infrared lasers being used to scan the waveguide coupling surface of the printed circuit board clamp and a second set of infrared lasers being used to scan the coupling surface of the multi-channel fiber array.
  4. 4. A method for coupling a multi-channel optical fiber array with a waveguide, applied to the multi-channel optical fiber array and waveguide coupling system of any one of claims 1 to 3, the method comprising: Scanning a waveguide coupling surface clamped by a printed circuit board by adopting a first group of infrared lasers to obtain first plane data; scanning the coupling surface of the multichannel optical fiber array by adopting a second group of infrared lasers to obtain second plane data; Determining a plane included angle according to the first plane data and the second plane data; based on the plane included angle, a coupling algorithm is adopted to generate an adjusting coupling strategy; And executing the adjusting coupling strategy to perform coupling adjustment on the multichannel optical fiber array and the waveguide.
  5. 5. The method of coupling a multi-channel fiber array to a waveguide according to claim 4, wherein the recording coordinates M n （X n ,Y n ,Z n ) of K points with respect to the origin of coordinates includes: Gridding the scanning area, and randomly selecting a point in each grid as a basic point; Selecting K target points from the basic points according to the geometric distribution of the scanning area; Scanning the target point, and recording coordinates M n （X n ,Y n ,Z n of K points by taking the origin of coordinates as a reference).
  6. 6. The method for coupling a multi-channel fiber array to a waveguide of claim 4, wherein generating an adjusted coupling strategy based on the planar included angle using a coupling algorithm comprises: Determining a first direction adjustment mode based on the plane included angle information, so that the coupling surface of the multichannel optical fiber array and the waveguide coupling surface are parallel in a second direction perpendicular to the first direction; rotating the multi-channel optical fiber array in a plane parallel to the second direction, obtaining the position parameters of the multi-channel optical fiber array in the adjusting frame when the optical power of the left channel end point of the multi-channel optical fiber array is maximum, and Acquiring the position parameters of the multichannel optical fiber array in the adjusting frame when the optical power of the right channel end point of the multichannel optical fiber array is maximum; calculating a rotation angle according to the position parameter, and taking the rotation angle as a compensation angle; taking the first direction adjustment mode and the compensation angle as the adjustment coupling strategy; And adjusting the first direction and the second direction of the adjusting frame by adopting an optical power monitoring mode through the adjusting coupling strategy.
  7. 7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of coupling a multi-channel fiber array with a waveguide as claimed in any one of claims 4 to 6 when the computer program is executed by the processor.
  8. 8. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the method of coupling a multi-channel fiber array with a waveguide according to any one of claims 4 to 6.

Description

Coupling system, method and related equipment for multichannel optical fiber array and waveguide Technical Field The present invention relates to the field of optical module packaging, and in particular, to a system, a method, and related devices for coupling a multichannel optical fiber array and a waveguide. Background In modern communication technology, optical fiber communication is a main transmission medium due to the advantages of high bandwidth, low loss, strong anti-interference capability and the like. As a key component in a fiber optic communication system, the performance of a multi-channel fiber array directly affects the stability and transmission efficiency of the overall communication system. The quality of the coupling of the multi-channel fiber array to the waveguide is one of the key factors affecting the transmission efficiency. At present, the fiber core diameter of the multichannel optical fiber array is only 9 micrometers, and the accuracy requirements on the angle direction, the X direction and the Y direction are extremely high when the multichannel optical fiber array is coupled with a waveguide. The prior art mainly relies on an image visual recognition system to ensure the plane angle precision, and usually only can reach the precision of +/-0.5 degrees. This lower angular accuracy limits the coupling efficiency and becomes a bottleneck limiting the performance improvement of the optical fiber communication system. Therefore, a new technical scheme is urgently needed to improve the precision of the plane angle between the multichannel optical fiber array and the waveguide coupling surface, so that the coupling efficiency is improved. Disclosure of Invention The embodiment of the invention provides a coupling system, a coupling method, computer equipment and a storage medium of a multichannel optical fiber array and a waveguide, so as to improve the coupling efficiency of the multichannel optical fiber array and the waveguide. In order to solve the technical problems, the embodiment of the application provides a coupling system of a multichannel optical fiber array and a waveguide, which comprises an adjusting frame, a printed circuit board clamping device, an infrared laser scanning device and a control system, wherein the adjusting frame, the infrared laser scanning device and the control system are electrically connected, The adjusting frame comprises clamping jaws, the clamping jaws are used for fixing the multichannel optical fiber array, and the adjusting frame is used for adjusting the positions of the multichannel optical fiber array; The clamping device comprises a printed circuit board, a base limiting groove and a photoelectric conversion chip, wherein the base limiting groove is used for fixing the printed circuit board, the photoelectric conversion chip is arranged on the printed circuit board, and the photoelectric conversion chip comprises a waveguide; The printed circuit board clamping device comprises a waveguide coupling surface, wherein the waveguide coupling surface can be the surface of the printed circuit board facing the adjusting frame or the surface of the photoelectric conversion chip facing the adjusting frame, preferably the waveguide coupling surface is the surface of the photoelectric conversion chip facing the adjusting frame, the infrared laser scanning device is used for scanning the waveguide coupling surface of the printed circuit board clamping device, and simultaneously scanning the coupling surface of the multichannel optical fiber array to obtain plane scanning data of the two coupling surfaces and transmitting the plane scanning data to the control system; and the control system receives the plane scanning data sent by the infrared laser scanning device, generates an adjustment coupling strategy, and controls the adjusting frame to adjust and couple the multichannel optical fiber array based on the adjustment coupling strategy. Optionally, the control system comprises a signal receiving unit, a calculating unit, a strategy generating unit and an adjusting control unit; The signal receiving unit is used for receiving the plane scanning data sent by the infrared laser scanning device; the calculating unit is used for carrying out angle calculation according to the received plane scanning data to obtain a plane angle; the strategy generating unit generates an adjusting coupling strategy according to the plane angle; and the adjusting control unit controls the adjusting frame to adjust and couple the multichannel optical fiber array by adopting the adjusting coupling strategy. Optionally, the infrared laser scanning device includes at least two groups of infrared lasers, the first group of infrared lasers is used for scanning the waveguide coupling surface clamped by the printed circuit board, and the second group of infrared lasers is used for scanning the coupling surface of the multichannel optical fiber array. In order to solve the above te