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CN-122018098-A - Optical fiber coupling device with ceramic ferrule and method

CN122018098ACN 122018098 ACN122018098 ACN 122018098ACN-122018098-A

Abstract

The invention discloses an optical fiber coupling device with a ceramic ferrule and a method thereof, wherein a mounting platform is sequentially provided with a displacement adjusting module, a reflecting mirror assembly, a micro-head clamping assembly, a camera assembly, an auxiliary fixing assembly and a curing assembly, wherein the reflecting mirror assembly is arranged at the moving end of the displacement adjusting module, the displacement adjusting module is used for driving the reflecting mirror assembly to be close to or far away from the micro-head clamping assembly along the horizontal direction and further driving the reflecting mirror assembly to move up and down along the vertical direction, the micro-head clamping assembly is used for clamping and positioning the ceramic ferrule, the camera assembly can be matched with the reflecting mirror assembly to image a reflecting light spot, analyze uniformity and read optical path parameters, the curing assembly is used for curing glue after the ceramic ferrule is coupled and positioned, and the auxiliary fixing assembly is used for fixing a corresponding device. The invention can effectively ensure the accurate coupling of the optical fibers, has consistent light spots and high reliability, thereby being convenient for practical use.

Inventors

  • FEI HUA
  • SONG JIAN
  • HUANG YAXIONG
  • YAN DAPENG

Assignees

  • 武汉锐科光纤激光技术股份有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (9)

  1. 1. An optical fiber coupling device with a ferrule, comprising: the mounting platform (1) is sequentially provided with a displacement adjusting module (2), a reflecting mirror assembly (3), a micro head clamping assembly (4), a camera assembly (5), an auxiliary fixing assembly and a curing assembly; The reflecting mirror assembly (3) is arranged at the moving end of the displacement adjusting module (2), the displacement adjusting module (2) is used for driving the reflecting mirror assembly (3) to be close to or far away from the micro head clamping assembly (4) along the horizontal direction, and the reflecting mirror assembly (3) can be driven to move up and down along the vertical direction; The micro-head clamping assembly (4) is used for clamping and positioning the ceramic ferrule; The camera component (5) can be matched with the reflector component (3) to image the reflected light spots, analyze uniformity and read optical path parameters; the curing component is used for curing the glue after the ceramic ferrule is coupled and positioned; the auxiliary fixing component is used for fixing corresponding devices and can also hang optical fibers with ceramic ferrules.
  2. 2. The optical fiber coupling device with the ceramic ferrule according to claim 1, wherein the reflecting mirror assembly (3) comprises a mounting seat (301) arranged at the moving end of the displacement adjusting module (2), a positioning block (302) is arranged on the mounting seat (301), a light outlet hole (303) is formed in the positioning block (302), a reflecting lens (304) and a collimating lens (305) are further arranged on the positioning block (302), and the collimating lens (305) is arranged between the light outlet hole (303) and the reflecting lens (304) and is coaxially arranged.
  3. 3. The optical fiber coupling device with the ceramic ferrule is characterized in that the micro-head clamping assembly (4) comprises a connecting frame (401) arranged on the mounting platform (1), a first clamping frame (402) is hinged to one end of the connecting frame (401), a driving part (403) provided with a corresponding micro-head is arranged on the connecting frame (401), a second clamping frame (404) is arranged at the moving end of the driving part (403), the driving part (403) is used for driving the second clamping frame (404) to move towards one side close to or far from the first clamping frame (402), and a positioning groove (405) which is matched with the ceramic ferrule and used for clamping and positioning the ceramic ferrule is formed between the first clamping frame (402) and the second clamping frame (404); A tension spring (406) is further arranged between the connecting frame (401) and the first clamping frame (402), and the tension spring (406) is used for pulling the first clamping frame (402) and keeping the clamping state of the ceramic ferrule in the vertical direction.
  4. 4. The optical fiber coupling device with the ceramic ferrule according to claim 1, wherein the camera assembly (5) comprises a bracket (501) arranged on the mounting platform (1), a camera body (502) is arranged on the bracket (501), and the camera body (502) is a CCD camera.
  5. 5. The optical fiber coupling device with the ceramic ferrule according to claim 2, wherein the auxiliary fixing assembly comprises a limiting part (6) and an optical fiber hanging frame (7), the limiting part (6) comprises an assembling plate (601) arranged on the positioning block (302), a horizontally inverted semiconductor laser device is arranged in the assembling plate (601), a containing seat (602) is arranged on the mounting platform (1), the assembling plate (601) is slidably arranged in the containing seat (602), a plunger (603) with a spring is slidably arranged on the containing seat (602), one end of the plunger (603) extends into the containing seat (602), and a limiting plate (604) is arranged at the end of the plunger, and the limiting plate (604) is in abutting fit with the assembling plate (601) and can be matched with the plunger (603) to enable the assembling plate (601) to be in abutting fit on the inner wall of the containing seat (602); The irradiation end of the semiconductor laser device is coaxially arranged with the light outlet hole (303); the optical fiber hanging frame (7) is vertically arranged on the containing seat (602) and is used for hanging the optical fiber with the ceramic ferrule.
  6. 6. The optical fiber coupling device with the ceramic ferrule according to claim 1, wherein the curing assembly comprises an assembly frame component (8) and a curing lamp (9), the assembly frame component (8) comprises a first assembly frame (801) arranged on the mounting platform (1), a second assembly frame (802) is rotatably arranged on the first assembly frame (801), and a rotating handle (803) used for limiting the second assembly frame (802) is further arranged on the first assembly frame (801); The curing lamp (9) is arranged at one end, far away from the first assembly frame (801), of the second assembly frame (802), and the irradiation end of the curing lamp (9) faces towards the ceramic ferrule clamping position of the differential head clamping assembly (4).
  7. 7. A method of coupling an optical fiber with a ferrule, comprising the apparatus of any one of claims 1-6, comprising the steps of: S1, horizontally and reversely placing a semiconductor laser device into an assembly plate (601), pushing the assembly plate (601) into a storage seat (602), and tightly pressing and fixing the assembly plate (601) through matching a plunger (603) with a spring with a limit plate (604) and the storage seat (602) to prevent inclination and position deviation of the device; S2, hanging the optical fiber with the ceramic ferrule on an optical fiber hanger (7), placing the ceramic ferrule into a light outlet hole (303) from the side of a device, and finishing stable clamping of the ceramic ferrule in the vertical direction by matching a clamping end of a differential head clamping assembly (4) with a tension spring (406); S3, driving the reflecting mirror assembly (3) to transversely move or move up and down through the displacement adjusting module (2) to enable the collimating lens (305) and the light outlet (303) to be concentric and located at a working focus position so as to ensure that a laser light path and the center of the collimating lens (305) are coaxial; S4, introducing laser from the outside to the semiconductor laser device end in a reverse light-passing mode, directly entering a detection view of a camera body (502) after being collimated by a collimating lens (305) and reflected by a reflecting lens (304), imaging a reflected light spot by a camera component (5), analyzing the shape and uniformity of the light spot by an external computer system, and reading related parameters of a light path in real time; S5, micro-adjusting the differential head of the differential head clamping assembly (4), pushing the second clamping frame (404) to move by matching with the driving part (403) to drive the ceramic ferrule to carry out two-dimensional precise position adjustment, and monitoring the light spot state in real time by the camera body (502) in the adjustment process until a stable and uniform optimal light spot image is read, and determining the optimal coupling position of the ceramic ferrule; And S6, performing glue curing on the optimal coupling position of the ceramic ferrule by the auxiliary fixing assembly package to finish the optical fiber coupling operation with the ceramic ferrule.
  8. 8. The method of claim 7, wherein the laser beam with reverse light passing through in the step S4 is reflected by the reflecting mirror (304) and then directly enters the detection field of the camera body (502), and the relevant parameters of the light path are read in real time in the light spot analysis process.
  9. 9. The method of claim 7, wherein the step S5 is performed by monitoring the camera body (502) in real time during the adjustment of the displacement of the ferrule.

Description

Optical fiber coupling device with ceramic ferrule and method Technical Field The invention relates to the technical field of semiconductor lasers, in particular to an optical fiber coupling device with a ceramic ferrule and a method thereof. Background Semiconductor lasers are becoming more and more widely used in the fields of communication, military, medical treatment, etc., and as a semiconductor component, the market demand for the semiconductor lasers is increasing. Generally, the introduction of optical fiber components with ceramic ferrules into semiconductor laser products is a current mainstream technology, and is mainly divided into two types, namely passive alignment based on the mechanical precision of the outer diameter of the ferrules (such as using a precise ceramic sleeve), the loss of the optical fiber components is limited by multistage tolerance accumulation, the consistency of direct alignment assembly is poor, active alignment based on optical power feedback is poor, huge equipment is usually used, the flow is complicated, the efficiency is low, and the offset problem in the coupling curing process is difficult to solve, and the consistency of light spots of the optical fibers with ceramic ferrules after coupling is poor. However, in the actual scenario of mass production of semiconductor lasers with ceramic ferrules, the prior art still has a plurality of obvious defects, the alignment dimension is relatively free, the ferrule is inserted into a device groove and has an inclination angle, the alignment and curing links are disjointed, the glue is cured and contracted, in addition, the management of the whole stress (such as the bending of the optical fiber) of the optical fiber assembly is lacking, and the long-term reliability is influenced, so how to design an optical fiber coupling device and a related coupling method which can realize the precise alignment and curing control of the ceramic ferrule, ensure the consistency of light-emitting spots, improve the coupling precision and the production efficiency, optimize the stress management and enhance the reliability of the device, and the adaptive production and research and development test requirements are the problems to be solved urgently by those skilled in the art. Disclosure of Invention The invention aims to overcome the defects at present and provide the optical fiber coupling device and the optical fiber coupling method with the ceramic ferrule, which realize accurate coupling of optical fibers, consistent light spots and high reliability. In order to solve the technical problems, the invention adopts the following technical scheme that the optical fiber coupling device with the ceramic ferrule comprises: the mounting platform is sequentially provided with a displacement adjusting module, a reflecting mirror assembly, a micro head clamping assembly, a camera assembly, an auxiliary fixing assembly and a curing assembly; the displacement adjusting module is used for driving the reflecting mirror assembly to be close to or far from the micro head clamping assembly along the horizontal direction, and can also drive the reflecting mirror assembly to move up and down along the vertical direction; the micro-head clamping assembly is used for clamping and positioning the ceramic ferrule; The camera component can be matched with the reflector component to image the reflected light spots, analyze uniformity and read optical path parameters; the curing component is used for curing the glue after the ceramic ferrule is coupled and positioned; the auxiliary fixing component is used for fixing corresponding devices and can also hang optical fibers with ceramic ferrules. Further, the reflector assembly comprises a mounting seat arranged at the moving end of the displacement adjusting module, a positioning block is arranged on the mounting seat, a light outlet hole is formed in the positioning block, a reflector and a collimating lens are further arranged on the positioning block, and the collimating lens is located between the light outlet hole and the reflector and is coaxially arranged. Further, the differential head clamping assembly comprises a connecting frame arranged on the mounting platform, one end of the connecting frame is hinged to a first clamping frame, a driving part for configuring the corresponding differential head is arranged on the connecting frame, a second clamping frame is arranged at the moving end of the driving part and used for driving the second clamping frame to move towards one side close to or far away from the first clamping frame, and a positioning groove which is matched with the ceramic ferrule and used for clamping and positioning the ceramic ferrule is formed between the first clamping frame and the second clamping frame; and a tension spring is further arranged between the connecting frame and the first clamping frame and used for pulling the first clamping frame and keeping the clamping state of the