Semiconductor optical fiber coupling equipment

Abstract

The invention discloses semiconductor optical fiber coupling equipment, and relates to the technical field of optical fiber coupling, the equipment comprises a fixing box, a connecting pipe is installed at the center position of one end of the fixing box, and a first fixing block is installed on the side, close to the center position of the fixing box, in the connecting pipe; a butt joint penetrating hole is formed in the center of the first fixing block, a first optical fiber core is installed in the butt joint penetrating hole, a semiconductor laser is installed in the fixing box, the output end of the semiconductor laser right faces the input end of the first optical fiber core, and a lens coupling mechanism is arranged between the semiconductor laser and the connecting pipe. The wide parallel light is changed into the narrow parallel light through the lens group formed by the convex lens and the concave lens, and the final laser width is the same as the section width of the first optical fiber core after the change of the plurality of lens groups, so that the laser emitted by the semiconductor laser is irradiated into the first optical fiber core in parallel, and the optical fiber coupling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber coupling, in particular to a semiconductor optical fiber coupling device. Background Art

[0002] There are two main ways for the optical signal emitted by a semiconductor laser to enter the optical fiber: direct coupling and lens coupling, among which lens coupling is divided into single-lens coupling and multi-lens coupling. Lens coupling can achieve higher coupling efficiency than direct coupling. The main advantage of using double-lens coupling is that it can disperse tolerances, allowing components on the optical path to have a larger displacement space.

[0003] Most existing lens couplings focus the laser beam onto the input end of the optical fiber. However, the focused light beam has different angles and will be continuously reflected after entering the optical fiber, affecting the transmission of the optical signal.

[0004] At the same time, the existing direct coupling method is not easy to align the two optical fibers, and the end faces of the two optical fibers cannot be closely attached to each other, which affects the transmission of optical signals and is inconvenient for users.

[0005] In view of the above problems, an improved semiconductor optical fiber coupling device is now designed. Summary of the invention

[0006] The object of the present invention is to provide a semiconductor optical fiber coupling device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A semiconductor optical fiber coupling device comprises a fixing box, wherein a connecting tube is installed at the center position of one end of the fixing box, a first fixing block is installed on the side of the connecting tube close to the center position of the fixing box, a butt-jointing through-hole is provided at the center position of the first fixing block, a first optical fiber core is installed inside the butt-jointing through-hole, a space for facilitating direct coupling and connection between optical fibers is reserved at the end of the butt-jointing through-hole away from the fixing box, a semiconductor laser is installed inside the fixing box, an output end of the semiconductor laser is directly opposite to an input end of the first optical fiber core, a lens coupling mechanism for coupling laser light emitted by the semiconductor laser with the input end of the first optical fiber core is arranged between the semiconductor laser and the connecting tube, and a coupling connection mechanism for direct butt-jointing and coupling between optical fibers is arranged on the side of the connecting tube away from the fixing box.

[0009] As a further solution of the present invention: the lens coupling mechanism includes a first fixed tube, which is arranged between the output end of the semiconductor laser and the input end of the first optical fiber core, the side wall of the first fixed tube is fixed to the inner wall of the fixed box through a connecting rod, the center position of the first fixed tube is in the same straight line with the center axis of the first optical fiber core, and the interior of the first fixed tube is provided with a plurality of lens groups for converting wide parallel light into narrow parallel light, the lens group includes a convex lens and a concave lens, the convex lens is arranged on a side close to the semiconductor laser, and the concave lens is arranged on a side away from the semiconductor laser.

[0010] As a further solution of the present invention: the coupling connection mechanism includes a fixed cylinder, a rotating seat is installed on the side wall of the fixed cylinder, a fixing ring is rotatably connected to the inner wall of the rotating seat, an internal thread is arranged on the inner wall of the fixing ring, an external thread is arranged on the side wall of the connecting tube away from the fixed box, under the action of the thread, the fixing ring fixes the fixed cylinder inside the connecting tube, an optical fiber is arranged at the end of the fixed cylinder away from the connecting tube, the end of the optical fiber close to the connecting tube passes through the side wall of the fixed cylinder and is arranged inside the fixed cylinder, the end of the optical fiber close to the connecting tube is stripped of the protective cover to expose the second optical fiber core, the end of the fixed cylinder close to the connecting tube is provided with a limiting component for aligning the second optical fiber core and inserting it into the docking perforation, and the interior of the fixed cylinder is provided with a pressing component for tightly docking the end of the second optical fiber core with the end of the first optical fiber core.

[0011] As a further solution of the present invention: friction ridges are installed on the side walls of the fixing ring to increase the friction force of the side walls of the fixing ring.

[0012] As a further solution of the present invention: the limiting assembly includes a second fixed tube, the second fixed tube is arranged at one end of the fixed tube close to the connecting tube, a second fixed block is installed on the side of the second fixed tube close to the connecting tube, a limiting through hole is provided at the center position of the second fixed block, the second optical fiber core is placed inside the limiting through hole, a limiting ring for limiting the second fixed tube is installed at one end of the first fixed block close to the fixed tube, and a telescopic assembly for protecting the second optical fiber core is provided at one end of the second fixed tube away from the connecting tube.

[0013] As a further solution of the present invention: the telescopic assembly includes a second fixed ring, which is installed on the inner wall of the fixed cylinder, a second limiting rod is installed at one end of the second fixed ring close to the second fixed tube, and one end of the second limiting rod away from the second fixed ring is installed on the inner wall of the fixed cylinder, and the end of the second fixed tube away from the connecting tube passes through the fixed cylinder and is installed with a second movable ring, the second movable ring slides on the side wall of the second limiting rod, a second spring is sleeved on the second limiting rod between the second movable ring and the second fixed ring, and both ends of the second spring are respectively installed on the second fixed ring and the second movable ring.

[0014] As a further solution of the present invention: the end of the second fixing tube close to the connecting tube is set as a third guiding slope, and the angle of the inner wall of the limiting ring close to the end of the fixing tube is set as a second guiding slope that cooperates with the third guiding slope.

[0015] As a further solution of the present invention: the edge of the butt-joint through-hole close to one end of the fixing tube is arranged as a first guiding inclined surface for facilitating the second optical fiber core to enter the butt-joint through-hole.

[0016] As a further solution of the present invention: the clamping assembly includes a sleeve and a first fixed ring, the first fixed ring is installed on the inner wall of the fixed tube on the side of the second fixed ring away from the connecting tube, a plurality of first limiting rods are installed between the first fixed ring and the second fixed ring, the sleeve is fixedly sleeved on the side wall of the optical fiber close to the second optical fiber core, a first movable ring is installed on the side wall of the sleeve, the first movable ring is slidably sleeved on the side wall of the first limiting rod, a first spring is sleeved on the side wall of the first limiting rod between the first movable ring and the first fixed ring, two ends of the first spring are respectively installed on the first fixed ring and the first movable ring, and a redundant length of the optical fiber is arranged inside the fixed tube.

[0017] As a further solution of the present invention: a plurality of heat dissipation fins for facilitating heat dissipation are installed on the side walls of the fixing box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention changes wide parallel light into narrow parallel light through a lens group composed of a convex lens and a concave lens. After changes of multiple lens groups, the final laser width is made the same as the cross-sectional width of the first optical fiber core, so that the laser emitted by the semiconductor laser is irradiated in parallel to the inside of the first optical fiber core, reducing the refraction loss of light and improving the efficiency of optical fiber coupling.

[0020] The present invention enables the second optical fiber core to be accurately inserted into the interior of the docking perforation and docked with the first optical fiber core through the limiting of the fixing tube and the connecting tube, and the limiting of the second fixing tube and the limiting ring, thereby improving the accuracy and efficiency of the direct coupling of the second optical fiber core and the first optical fiber core.

[0021] At the same time, the second optical fiber core is protected by the telescopically movable second fixing tube and the second fixing block to avoid damage to the second optical fiber core.

[0022] The present invention pushes the second optical fiber core to be pressed tightly against the first optical fiber core by the first spring, thereby improving the docking effect of the second optical fiber core and the first optical fiber core and improving the efficiency of optical signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the lens coupling mechanism in the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the butt-jointed perforation in the present invention.

[0026] Figure 4 It is a structural schematic diagram of the coupling connection mechanism in the present invention.

[0027] Wherein: 1. fixing box; 2. connecting tube; 3. fixing ring; 4. fixing tube; 5. optical fiber; 6. semiconductor laser; 7. first fixing tube; 8. limiting ring; 9. first fixing block; 10. first optical fiber core; 11. concave lens; 12. convex lens; 13. docking perforation; 14. first guiding slope; 15. second guiding slope; 16. first fixing ring; 17. first spring; 18. first limiting rod; 19. first moving ring; 20. second fixing ring; 21. second spring; 22. second moving ring; 23. second limiting rod; 24. second optical fiber core; 25. limiting perforation; 26. second fixing block; 27. third guiding slope; 28. second fixing tube; 29. ​​sleeve; 30. rotating seat. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 4In an embodiment of the present invention, a semiconductor optical fiber coupling device includes a fixing box 1, a connecting tube 2 is installed at the center of one end of the fixing box 1, a first fixing block 9 is installed on the side of the connecting tube 2 close to the center of the fixing box 1, a docking through hole 13 is opened at the center of the first fixing block 9, a first optical fiber core 10 is installed inside the docking through hole 13, and a space is reserved at the end of the docking through hole 13 away from the fixing box 1 for direct coupling and connection between optical fibers, a semiconductor laser 6 is installed inside the fixing box 1, the output end of the semiconductor laser 6 is directly opposite to the input end of the first optical fiber core 10, a lens coupling mechanism for coupling the laser emitted by the semiconductor laser 6 with the input end of the first optical fiber core 10 is arranged between the semiconductor laser 6 and the connecting tube 2, and a coupling connection mechanism for direct docking coupling between optical fibers is arranged on the side of the connecting tube 2 away from the fixing box 1.

[0030] The lens coupling mechanism includes a first fixed tube 7, which is arranged between the output end of the semiconductor laser 6 and the input end of the first optical fiber core 10. The side wall of the first fixed tube 7 is fixed to the inner wall of the fixed box 1 through a connecting rod. The center position of the first fixed tube 7 is in the same straight line as the center axis of the first optical fiber core 10. The interior of the first fixed tube 7 is provided with a plurality of lens groups for converting wide parallel light into narrow parallel light. The lens group includes a convex lens 12 and a concave lens 11. The convex lens 12 is arranged on a side close to the semiconductor laser 6, and the concave lens 11 is arranged on a side away from the semiconductor laser 6.

[0031] When in use, the parallel laser beam emitted by the semiconductor laser 6 hits the convex lens 12, and the convex lens 12 refracts the parallel laser beam onto the concave lens 11. The concave lens 11 outputs the refracted laser beam in parallel, and the width of the parallel laser beam output by the concave lens 11 is smaller than the width of the parallel laser beam input by the convex lens 12. The laser beam width becomes smaller after passing through multiple lens groups until the laser beam width is the same as the cross-section of the first optical fiber core 10, so that the laser light directly enters the interior of the first optical fiber core 10 in parallel, thereby improving the coupling transmission efficiency of the laser signal.

[0032] The coupling connection mechanism includes a fixed cylinder 4, a rotating seat 30 is installed on the side wall of the fixed cylinder 4, and a fixing ring 3 is rotatably connected to the inner wall of the rotating seat 30, and an internal thread is arranged on the inner wall of the fixing ring 3. An external thread is arranged on the side wall of the connecting tube 2 away from the fixing box 1. Under the action of the thread, the fixing ring 3 fixes the fixed cylinder 4 inside the connecting tube 2, and an optical fiber 5 is arranged at the end of the fixed cylinder 4 away from the connecting tube 2. The end of the optical fiber 5 close to the connecting tube 2 passes through the side wall of the fixed cylinder 4 and is arranged inside the fixed cylinder 4. The protective cover of the optical fiber 5 close to the connecting tube 2 is stripped off to expose the second optical fiber core 24. The end of the fixed cylinder 4 close to the connecting tube 2 is provided with a limiting component for aligning the second optical fiber core 24 and inserting it into the docking through hole 13, and the interior of the fixed cylinder 4 is provided with a pressing component for tightly docking the end of the second optical fiber core 24 with the end of the first optical fiber core 10.

[0033] The limiting assembly includes a second fixed tube 28, which is arranged at one end of the fixed tube 4 close to the connecting tube 2, and a second fixed block 26 is installed on the side of the second fixed tube 28 close to the connecting tube 2. A limiting through hole 25 is provided at the center of the second fixed block 26, and the second optical fiber core 24 is placed inside the limiting through hole 25. A limiting ring 8 for limiting the second fixed tube 28 is installed at one end of the first fixed block 9 close to the fixed tube 4, and a telescopic assembly for protecting the second optical fiber core 24 is provided at one end of the second fixed tube 28 away from the connecting tube 2.

[0034] The telescopic assembly includes a second fixed ring 20, which is installed on the inner wall of the fixed cylinder 4. A second limiting rod 23 is installed at one end of the second fixed ring 20 close to the second fixed tube 28. An end of the second limiting rod 23 away from the second fixed ring 20 is installed on the inner wall of the fixed cylinder 4. An end of the second fixed tube 28 away from the connecting tube 2 passes through the fixed cylinder 4 and is provided with a second movable ring 22. The second movable ring 22 is slidably sleeved on the side wall of the second limiting rod 23. A second spring 21 is sleeved on the second limiting rod 23 between the second movable ring 22 and the second fixed ring 20. Both ends of the second spring 21 are respectively mounted on the second fixed ring 20 and the second movable ring 22.

[0035] The end of the second fixed tube 28 close to the connecting tube 2 is set as a third guide slope 27, the angle of the inner wall of the limiting ring 8 close to the end of the fixed tube 4 is set as a second guide slope 15 that cooperates with the third guide slope 27, and the edge of the docking through hole 13 close to the end of the fixed tube 4 is set as a first guide slope 14 that facilitates the second optical fiber core 24 to enter the docking through hole 13.

[0036] When in use, the fixing tube 4 is inserted into the connecting tube 2, the second fixing tube 28 is inserted into the limiting ring 8, and then the fixing tube 4 continues to move toward the fixing box 1, and the second fixing tube 28 moves toward the fixing tube 4. The second fixing tube 28 drives the second moving ring 22 to slide along the side wall of the second limiting rod 23 and compresses the second spring 21. At the same time, the second fixing tube 28 drives the second fixing block 26 and the limiting perforation 25 to slide along the side wall of the second optical fiber core 24, so that the second optical fiber core 24 extends out of the limiting perforation 25 and is inserted into the docking perforation 13, and is coupled and docked with the first optical fiber core 10, and then the fixing ring 3 is fixed to the connecting tube 2 by threads.

[0037] The clamping assembly includes a sleeve 29 and a first fixed ring 16, the first fixed ring 16 is installed on the inner wall of the fixed tube 4 on the side of the second fixed ring 20 away from the connecting tube 2, a plurality of first limiting rods 18 are installed between the first fixed ring 16 and the second fixed ring 20, the sleeve 29 is fixedly sleeved on the side wall of the optical fiber 5 close to the second optical fiber core 24, a first movable ring 19 is installed on the side wall of the sleeve 29, the first movable ring 19 is slidably sleeved on the side wall of the first limiting rod 18, a first spring 17 is sleeved on the side wall of the first limiting rod 18 between the first movable ring 19 and the first fixed ring 16, the two ends of the first spring 17 are respectively installed on the first fixed ring 16 and the first movable ring 19, and a redundant length of the optical fiber 5 is arranged inside the fixed tube 4.

[0038] When the second optical fiber core 24 is coupled and docked with the first optical fiber core 10, the fixing tube 4 continues to move toward the connecting tube 2, and the second optical fiber core 24 pushes the sleeve 29 to move away from the connecting tube 2. The sleeve 29 drives the first movable ring 19 to slide along the side wall of the first limiting rod 18 and compresses the first spring 17, so that the second optical fiber core 24 and the first optical fiber core 10 are tightly fitted and coupled.

[0039] Working principle of a semiconductor fiber coupling device:

[0040] When connecting the fixing tube 4 and the connecting tube 2, the fixing tube 4 is inserted into the connecting tube 2, the second fixing tube 28 is inserted into the limiting ring 8, and then the fixing tube 4 continues to move toward the fixing box 1, and the second fixing tube 28 moves toward the fixing tube 4. The second fixing tube 28 drives the second moving ring 22 to slide along the side wall of the second limiting rod 23 and compresses the second spring 21. At the same time, the second fixing tube 28 drives the second fixing block 26 and the limiting perforation 25 to slide along the side wall of the second optical fiber core 24, so that the second optical fiber core 24 extends out of the limiting perforation 25 and is inserted into the inside of the docking perforation 13, and is coupled and docked with the first optical fiber core 10.

[0041] Then the fixing tube 4 continues to move slightly toward the connecting tube 2, and the second optical fiber core 24 pushes the sleeve 29 to move away from the connecting tube 2. The sleeve 29 drives the first movable ring 19 to slide along the side wall of the first limiting rod 18 and compresses the first spring 17, so that the second optical fiber core 24 and the first optical fiber core 10 are tightly fitted and coupled, and then the fixing ring 3 is fixed to the connecting tube 2 by threads.

[0042] When in use, the parallel laser beam emitted by the semiconductor laser 6 hits the convex lens 12, and the convex lens 12 refracts the parallel laser beam onto the concave lens 11. The concave lens 11 outputs the refracted laser beam in parallel, and the width of the parallel laser beam output by the concave lens 11 is smaller than the width of the parallel laser beam input by the convex lens 12. The laser beam width becomes smaller after passing through multiple lens groups until the laser beam width is the same as the cross-section of the first optical fiber core 10, so that the laser directly enters the interior of the first optical fiber core 10 in parallel. The first optical fiber core 10 transmits the laser signal to the second optical fiber core 24, and then transmits it to the outside through the second optical fiber core 24 inside the optical fiber 5.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A semiconductor optical fiber coupling device, comprising a fixing box (1), wherein a connecting tube (2) is installed at the center of one end of the fixing box (1), characterized in that: A first fixing block (9) is installed on one side of the connecting tube (2) near the center of the fixing box (1), a butt-jointing through hole (13) is provided at the center of the first fixing block (9), a first optical fiber core (10) is installed inside the butt-jointing through hole (13), a space for direct coupling connection between optical fibers is reserved at one end of the butt-jointing through hole (13) away from the fixing box (1), a semiconductor laser (6) is installed inside the fixing box (1), an output end of the semiconductor laser (6) faces the input end of the first optical fiber core (10), a lens coupling mechanism for coupling laser light emitted by the semiconductor laser (6) with the input end of the first optical fiber core (10) is provided between the semiconductor laser (6) and the connecting tube (2), and a coupling connection mechanism for direct butt-jointing coupling between optical fibers is provided on one side of the connecting tube (2) away from the fixing box (1).

2. A semiconductor optical fiber coupling device according to claim 1, characterized in that: The lens coupling mechanism comprises a first fixing tube (7), the first fixing tube (7) being arranged between the output end of the semiconductor laser (6) and the input end of the first optical fiber core (10), the side wall of the first fixing tube (7) being fixed to the inner wall of the fixing box (1) through a connecting rod, the center position of the first fixing tube (7) being in the same straight line as the center axis of the first optical fiber core (10), the interior of the first fixing tube (7) being arranged with a plurality of lens groups for converting wide parallel light into narrow parallel light, the lens groups comprising a convex lens (12) and a concave lens (11), the convex lens (12) being arranged on a side close to the semiconductor laser (6), and the concave lens (11) being arranged on a side away from the semiconductor laser (6).

3. A semiconductor optical fiber coupling device according to claim 1, characterized in that: The coupling connection mechanism comprises a fixing cylinder (4), a rotating seat (30) is installed on the side wall of the fixing cylinder (4), a fixing ring (3) is rotatably connected to the inner wall of the rotating seat (30), an inner wall of the fixing ring (3) is provided with an internal thread, and an external thread is provided on the side wall of the connecting tube (2) at one end away from the fixing box (1). Under the action of the thread, the fixing ring (3) fixes the fixing cylinder (4) inside the connecting tube (2), and an optical fiber (5) is provided at one end of the fixing cylinder (4) away from the connecting tube (2). One end of the optical fiber (5) close to the connecting tube (2) passes through the side wall of the fixing tube (4) and is arranged inside the fixing tube (4); the protective cover of the end of the optical fiber (5) close to the connecting tube (2) is stripped off to expose the second optical fiber core (24); one end of the fixing tube (4) close to the connecting tube (2) is provided with a limiting component for aligning the second optical fiber core (24) and inserting it into the docking through hole (13); and the interior of the fixing tube (4) is provided with a pressing component for tightly docking the end of the second optical fiber core (24) and the end of the first optical fiber core (10).

4. A semiconductor optical fiber coupling device according to claim 3, characterized in that: The side wall of the fixing ring (3) is provided with a friction convex strip for increasing the friction force of the side wall of the fixing ring (3).

5. A semiconductor optical fiber coupling device according to claim 3, characterized in that: The limiting assembly comprises a second fixing tube (28), the second fixing tube (28) being arranged at one end of the fixing tube (4) close to the connecting tube (2), a second fixing block (26) being installed inside the second fixing tube (28) on one side close to the connecting tube (2), a limiting through hole (25) being provided at the center of the second fixing block (26), the second optical fiber core (24) being placed inside the limiting through hole (25), a limiting ring (8) for limiting the second fixing tube (28) being installed at one end of the first fixing block (9) close to the fixing tube (4), and a telescopic assembly for protecting the second optical fiber core (24) being arranged at one end of the second fixing tube (28) away from the connecting tube (2).

6. A semiconductor optical fiber coupling device according to claim 5, characterized in that: The telescopic assembly comprises a second fixed ring (20), the second fixed ring (20) being mounted on the inner wall of the fixed cylinder (4), a second limiting rod (23) being mounted on one end of the second fixed ring (20) close to the second fixed tube (28), an end of the second limiting rod (23) being away from the second fixed ring (20) being mounted on the inner wall of the fixed cylinder (4), an end of the second fixed tube (28) being away from the connecting tube (2) passing through the fixed cylinder (4) being mounted with a second movable ring (22), the second movable ring (22) being slidably sleeved on the side wall of the second limiting rod (23), a second spring (21) being sleeved on the second limiting rod (23) between the second movable ring (22) and the second fixed ring (20), and two ends of the second spring (21) being respectively mounted on the second fixed ring (20) and the second movable ring (22).

7. A semiconductor optical fiber coupling device according to claim 6, characterized in that: The end of the second fixing tube (28) close to the connecting tube (2) is provided as a third guiding inclined surface (27), and the angle of the inner wall of the limiting ring (8) close to the end of the fixing tube (4) is provided as a second guiding inclined surface (15) which cooperates with the third guiding inclined surface (27).

8. A semiconductor optical fiber coupling device according to claim 6, characterized in that: An edge of the butt-joint through hole (13) close to one end of the fixing tube (4) is arranged as a first guiding inclined surface (14) for facilitating the second optical fiber core (24) to enter the butt-joint through hole (13).

9. A semiconductor optical fiber coupling device according to claim 3, characterized in that: The pressing assembly comprises a sleeve (29) and a first fixing ring (16). The first fixing ring (16) is mounted on the inner wall of the fixing tube (4) at the side of the second fixing ring (20) away from the connecting tube (2). A plurality of first limiting rods (18) are mounted between the first fixing ring (16) and the second fixing ring (20). The sleeve (29) is fixedly sleeved on the side wall of the optical fiber (5) close to the second optical fiber core (24). A first moving ring (19) is mounted on the side wall of the sleeve (29). The first moving ring (19) is slidably sleeved on the side wall of the first limiting rod (18). A first spring (17) is sleeved on the side wall of the first limiting rod (18) between the first moving ring (19) and the first fixing ring (16). The two ends of the first spring (17) are respectively mounted on the first fixing ring (16) and the first moving ring (19). A redundant length is arranged inside the fixing tube (4) for the optical fiber (5).

10. The semiconductor optical fiber coupling device according to claim 1, characterized in that: A plurality of heat dissipation fins are installed on the side wall of the fixing box (1) for facilitating heat dissipation.

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