Multi-dimensional optical fiber coupling adjusting mechanism

Abstract

The invention discloses a multi-dimensional optical fiber coupling adjusting mechanism which comprises an optical fiber assembly and an optical fiber flange, one end of the optical fiber flange is provided with an optical fiber universal thread, and the other end is provided with a convex spherical surface; the adjusting mechanism is in close fit with the optical fiber flange and can adjust the orientation and the pitching angle of the optical fiber; a plurality of rectangular mounting seats are arranged in the circumferential direction of the mounting base; the plurality of translation mechanisms are respectively connected with the plurality of rectangular mounting seats; and the position locking mechanism is used for providing locking force for the optical fiber in the axial direction and the radial direction. According to the multi-dimensional optical fiber coupling adjusting mechanism, the time cost consumed by multiple times of gasket trimming can be reduced, multi-dimensional optical fiber adjustment can be independently achieved, the self-aligning characteristic and the locking characteristic are achieved, the structure is compact, operation is easy, external interfaces are flexible, and the multi-dimensional optical fiber coupling adjusting mechanism can adapt to different optical assemblies and is convenient to integrate.

Description

Technical Field

[0001] The present invention relates to the technical field of laser assembly and adjustment, and in particular to a multi-dimensional optical fiber coupling adjustment mechanism. Background Art

[0002] Fiber coupling refers to the process of converging incident light through a converging lens into an optical fiber in an optical system, achieving the transmission and coupling of optical signals. Fiber coupling typically requires high coupling efficiency to minimize energy loss. Due to the small core diameter of optical fibers, achieving high coupling efficiency requires extremely precise positioning and angles within the optical system, making assembly and adjustment challenging.

[0003] Among the current adjustment methods, most use trimming of optical fiber gaskets to achieve the optical fiber coupling efficiency requirements. This method is relatively troublesome to use, requires many trimming times, and takes a long time to adjust.

[0004] Based on the above technical problems, technical personnel in this field urgently need to develop a multi-dimensional fiber coupling adjustment mechanism with a simple structure, which can independently realize multi-dimensional adjustment, has self-aligning and locking characteristics, has a flexible external interface, can adapt to different optical components, and is easy to integrate. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-dimensional fiber coupling adjustment mechanism with a simple structure, which can independently realize multi-dimensional adjustment, has self-aligning and locking characteristics, a flexible external interface, can adapt to different optical components, and is easy to integrate.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-dimensional optical fiber coupling adjustment mechanism of the present invention comprises:

[0008] a fiber optic assembly comprising an optical fiber; and

[0009] An optical fiber flange, one end of which is provided with a universal optical fiber thread for connecting the optical fiber, and the other end is provided with a convex spherical surface, and the flange surface of the optical fiber flange is provided with three concave spherical through holes;

[0010] an adjustment mechanism, tightly fitted with the optical fiber flange, and used to adjust the azimuth and pitch angle of the optical fiber;

[0011] The mounting base has multiple rectangular mounting seats arranged around it, and the outer surface of the base is provided with a mounting interface, which is connected to the optical component by screws;

[0012] The regulating mechanism also includes:

[0013] A plurality of translation mechanisms are respectively connected to the plurality of rectangular mounting seats, and the optical fibers are radially translated by the translation mechanisms;

[0014] The position locking mechanism is used to provide locking force in the axial and radial directions of the optical fiber.

[0015] Furthermore, the position locking mechanism includes a screw gland, the inner annular surface of which is provided with a fine internal thread; and

[0016] Two pressing blocks, the upper end of the mounting base is provided with two threaded holes, connected to the two pressing blocks by screws, and the upper end of the spiral gland is tightly connected to the two pressing blocks;

[0017] Compression spring, the lower end of the mounting base is provided with an inner ring groove, which contacts with one side of the compression spring.

[0018] Furthermore, the optical fiber assembly further includes an optical fiber gasket having three connecting through holes; and

[0019] The optical fiber holder is provided with three threaded holes for connecting with the adjustment mechanism, and an annular groove is provided at the lower end of the optical fiber holder, which contacts the side of the compression spring away from the mounting base, and a fine thread is provided on the side of the optical fiber holder, which is tightly matched with the internal thread of the spiral cover.

[0020] Furthermore, the adjustment mechanism is three adjustment screws, each of which has a self-locking thread and a convex spherical surface on the joint surface, which fits tightly with the concave spherical surface of the optical fiber flange. The optical fiber gasket is pressed onto the optical fiber seat through the three adjustment screws.

[0021] Furthermore, the translation mechanism includes a double helical screw and a locking gland, the double helical screw is provided with a shoulder at both ends, a smooth journal is provided on the inner side of the shoulder, and cooperates with the mounting base and the locking gland through a cylindrical surface, and the locking gland is tightly connected to the mounting base by screws;

[0022] The double-helix screw is provided with two helices in opposite directions in the middle, which are respectively threadedly connected with a left nut and a right nut;

[0023] The translation mechanism further includes a left connecting rod and a right connecting rod, one end of the left connecting rod is riveted to the left nut via a pin, and one end of the right connecting rod is riveted to the right nut via a pin;

[0024] A push block is provided with a circular hole at one end and is riveted to the left connecting rod and the right connecting rod through pins respectively, and a flat surface is provided at the other end of the push block and contacts the optical fiber assembly.

[0025] In the above technical solution, the present invention provides a multi-dimensional optical fiber coupling adjustment mechanism, which has the following beneficial effects:

[0026] The multi-dimensional fiber coupling adjustment mechanism of the present invention adjusts the fiber azimuth and pitch angle by rotating three adjustment screws. The double spherical surface pair of the fiber holder and the adjustment screws is linked to achieve self-centering during the angle adjustment process, and the built-in self-locking thread of the adjustment screws is used to lock the fiber angle.

[0027] The present invention can radially translate the optical fiber position through a rotating translation mechanism, and cooperate with the locking cover to achieve radial position locking of the optical fiber. By rotating the spiral cover, the axial position of the optical fiber can be adjusted, and the axial position can be locked by combining the pressure block and the compression spring.

[0028] The multi-dimensional fiber coupling adjustment mechanism of the present invention can reduce the time cost of multiple gasket trimming, can independently realize fiber adjustment in multiple dimensions, has self-aligning and locking characteristics, has a compact structure, is easy to operate, has a flexible external interface, can adapt to different optical components, and is easy to integrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 A schematic diagram of the overall structure of a multi-dimensional optical fiber coupling adjustment mechanism provided by an embodiment of the present invention;

[0031] Figure 2 A cross-sectional view of the overall structure of a multi-dimensional optical fiber coupling adjustment mechanism provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a translation mechanism in a multi-dimensional optical fiber coupling adjustment mechanism provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the installation of a multi-dimensional optical fiber coupling adjustment mechanism provided by an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Fiber optic assembly; 2. Fiber optic flange; 3. Adjustment mechanism; 4. Mounting base; 5. Position locking mechanism; 6. Translation mechanism;

[0036] 101. optical fiber; 102. optical fiber gasket; 103. optical fiber holder;

[0037] 301, adjusting screw;

[0038] 501, screw gland; 502, pressing block; 503, compression spring;

[0039] 601, double-helix screw; 602, left nut; 603, right nut; 604, left connecting rod; 605, right connecting rod; 606, push block; 607, locking cover. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] See also Figures 1 to 4 As shown;

[0042] A multi-dimensional optical fiber coupling adjustment mechanism of the present invention comprises:

[0043] an optical fiber assembly 1 comprising an optical fiber 101; and

[0044] An optical fiber flange 2, one end of which is provided with a universal optical fiber thread for connecting the optical fiber 101, and the other end is provided with a convex spherical surface, and the flange surface of the optical fiber flange 2 is provided with three concave spherical through holes;

[0045] An adjustment mechanism 3, which is tightly matched with the optical fiber flange 2, and is used to adjust the azimuth and pitch angle of the optical fiber 101;

[0046] The mounting base 4 has a plurality of rectangular mounting seats arranged around it, and a mounting interface is provided on the outer surface of the mounting base, which is connected to the optical component by screws;

[0047] The regulating mechanism also includes:

[0048] A plurality of translation mechanisms 6 are respectively connected to the plurality of rectangular mounting seats, and the optical fiber 101 is radially translated by the translation mechanisms 6;

[0049] The position locking mechanism 5 is used to provide locking force to the optical fiber 101 in the axial and radial directions.

[0050] As a further introduction to this embodiment, the position locking mechanism 5 includes a screw gland 501 , the inner annular surface of which is provided with a fine internal thread; and

[0051] Two pressing blocks 502, the upper end of the mounting base 4 is provided with two threaded holes, which are connected to the two pressing blocks 502 by screws, and the upper end of the spiral gland 501 is tightly connected to the two pressing blocks 502;

[0052] Compression spring 503 , the lower end of the mounting base 4 is provided with an inner ring groove, which contacts one side of the compression spring 503 .

[0053] As a further introduction to this embodiment, the optical fiber assembly 1 further includes an optical fiber gasket 102, which is made of a material with good elasticity and low linear expansion, and has three connecting through holes;

[0054] The optical fiber holder 103 is provided with three threaded holes for connecting with the adjustment mechanism 3, and an annular groove is provided at the lower end of the optical fiber holder 103, which contacts the side of the compression spring 503 away from the mounting base 4, and a fine thread is provided on the side of the optical fiber holder 103, which is tightly matched with the internal thread of the spiral cover 501.

[0055] As a further introduction to this embodiment, the adjustment mechanism 3 is three adjustment screws 301, and the adjustment screws 301 have self-locking threads. A convex spherical surface is provided on the joint surface, which tightly fits with the concave spherical surface of the optical fiber flange 2. The optical fiber gasket 102 is pressed onto the optical fiber seat 103 through the three adjustment screws 301.

[0056] As a further introduction to this embodiment, the translation mechanism 6 includes a double helical screw 601 and a locking gland 607. The double helical screw 601 is provided with a shoulder at both ends, and a smooth journal is provided on the inner side of the shoulder. The shoulder cooperates with the mounting base 4 and the locking gland 607 through a cylindrical surface, and the locking gland 607 is tightly connected to the mounting base 4 by screws.

[0057] The double-helical screw 601 has two helices in opposite directions in the middle, which are respectively threadedly connected to a left nut 602 and a right nut 603;

[0058] The translation mechanism 6 further includes a left connecting rod 604 and a right connecting rod 605. One end of the left connecting rod 604 is riveted to the left nut 602 via a pin, and one end of the right connecting rod 605 is riveted to the right nut 603 via a pin.

[0059] The push block 606 has a circular hole at one end, which is riveted to the left connecting rod 604 and the right connecting rod 605 through pins, and the other end of the push block 606 is provided with a flat surface, which contacts the optical fiber assembly 1.

[0060] The present invention provides a multi-dimensional optical fiber coupling adjustment mechanism, the specific working principle of which is as follows:

[0061] First, assemble the multi-dimensional fiber coupling adjustment mechanism and install it to the optical component; secondly, adjust the fiber angle by rotating the three adjustment screws 301 to adjust the fiber azimuth and pitch angle, and use the double spherical pair linkage of the fiber seat 103 and the adjustment screw 301 to achieve self-alignment during the angle adjustment process, and use the built-in self-locking thread of the adjustment screw to achieve fiber angle locking; then adjust the radial position of the fiber, and drive the push block 606 to move the fiber seat 103 by rotating the double helical screw 601 in the translation mechanism 6, and realize radial translation of the fiber position through the cooperation of the four translation mechanisms 6 up, down, left and right, and realize radial position locking of the fiber by adjusting the pre-tightening force of the locking cover 607; finally, adjust the axial position of the fiber, and realize axial position adjustment of the fiber by rotating the spiral cover 501, and realize axial position locking by combining the pressure block 502 and the compression spring 503 through screw connection.

[0062] In the above technical solution, the present invention provides a multi-dimensional optical fiber coupling adjustment mechanism, which has the following beneficial effects:

[0063] The multi-dimensional fiber coupling adjustment mechanism of the present invention adjusts the fiber azimuth and pitch angle by rotating three adjustment screws. The double spherical surface pair of the fiber holder and the adjustment screws is linked to achieve self-centering during the angle adjustment process, and the built-in self-locking thread of the adjustment screws is used to lock the fiber angle.

[0064] The present invention can radially translate the optical fiber position through a rotating translation mechanism, and cooperate with the locking cover to achieve radial position locking of the optical fiber. By rotating the spiral cover, the axial position of the optical fiber can be adjusted, and the axial position can be locked by combining the pressure block and the compression spring.

[0065] The multi-dimensional fiber coupling adjustment mechanism of the present invention can reduce the time cost of multiple gasket trimming, can independently realize fiber adjustment in multiple dimensions, has self-aligning and locking characteristics, has a compact structure, is easy to operate, has a flexible external interface, can adapt to different optical components, and is easy to integrate.

[0066] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A multi-dimensional optical fiber coupling adjustment mechanism, It is characterized in that The regulating mechanism includes: An optical fiber assembly (1) comprising an optical fiber (101); and An optical fiber flange (2), one end of which is provided with an optical fiber universal thread for connecting the optical fiber (101), and the other end of which is provided with a convex spherical surface, and the flange surface of the optical fiber flange (2) is provided with three concave spherical through holes; An adjustment mechanism (3) is tightly matched with the optical fiber flange (2), and the adjustment mechanism (3) is used to adjust the azimuth and elevation angle of the optical fiber (101); A mounting base (4) is provided with a plurality of rectangular mounting seats in the circumference thereof, and a mounting interface is provided on the outer ring surface thereof and is connected to the optical component by screws; The regulating mechanism also includes: A plurality of translation mechanisms (6) are respectively connected to the plurality of rectangular mounting seats, and the optical fiber (101) is enabled to achieve radial translation through the translation mechanisms (6); The position locking mechanism (5) is used to provide locking force in the axial and radial directions of the optical fiber (101).

2. A multi-dimensional optical fiber coupling adjustment mechanism according to claim 1, It is characterized in that The position locking mechanism (5) comprises a screw gland (501), the inner annular surface of which is provided with a fine pitch internal thread; and Two pressing blocks (502), the upper end of the mounting base (4) is provided with two threaded holes, connected to the two pressing blocks (502) by screws, and the upper end of the spiral gland (501) is tightly connected to the two pressing blocks (502); A compression spring (503), wherein the lower end of the mounting base (4) is provided with an inner annular groove which abuts against one side of the compression spring (503).

3. A multi-dimensional optical fiber coupling adjustment mechanism according to claim 2, It is characterized in that The optical fiber assembly (1) further comprises an optical fiber gasket (102) having three connecting through holes; and The optical fiber seat (103) is provided with three threaded holes for connecting with the adjustment mechanism (3), and the lower end of the optical fiber seat (103) is provided with an annular groove, which contacts with the side of the compression spring (503) away from the mounting base (4), and the side of the optical fiber seat (103) is provided with a fine thread, which is tightly matched with the internal thread of the spiral cover (501).

4. A multi-dimensional optical fiber coupling adjustment mechanism according to claim 1, It is characterized in that The adjustment mechanism (3) is composed of three adjustment screws (301), each of which has a self-locking thread and a convex spherical surface on the joint surface, which is tightly matched with the concave spherical surface of the optical fiber flange (2). The optical fiber gasket (102) is pressed onto the optical fiber seat (103) through the three adjustment screws (301).

5. A multi-dimensional optical fiber coupling adjustment mechanism according to claim 1, It is characterized in that The translation mechanism (6) comprises a double helical screw (601) and a locking cover (607), the double helical screw (601) being provided with shoulders at both ends, a smooth shaft neck being provided inside the shoulders, and cooperating with the mounting base (4) and the locking cover (607) via a cylindrical surface, and the locking cover (607) being tightly connected to the mounting base (4) via screws; The double-helix screw (601) is provided with two helices in opposite directions in the middle, which are respectively threadedly connected with a left nut (602) and a right nut (603); The translation mechanism (6) further comprises a left connecting rod (604) and a right connecting rod (605), one end of the left connecting rod (604) being riveted to the left nut (602) via a pin, and one end of the right connecting rod (605) being riveted to the right nut (603) via a pin; The push block (606) has a circular hole at one end and is riveted to the left connecting rod (604) and the right connecting rod (605) through a pin, and the other end of the push block (606) is provided with a flat surface to contact the optical fiber assembly (1).

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