Test fixture and laser test device

Abstract

The utility model provides a test fixture and a laser test device, which relates to the technical field of laser test equipment. The test fixture includes a base, a first clamping component, a horizontal adjustment component, a second clamping member and a height adjustment component; the base has a bearing platform; the first clamping component has a clamping portion, which is arranged above the base; the horizontal adjustment component is arranged on the bearing platform, and is transmission-connected with the first clamping component to drive the first clamping component to move in the horizontal direction; the second clamping member has a mounting portion, which is located above the clamping portion; the height adjustment component is arranged on the base, and the height adjustment component is connected to the second clamping member to drive the mounting portion to move in the vertical direction. The utility model has a simple structure and a small volume. When in use, it can realize the relative position change of the laser and the laser receiving core in three-dimensional space, so as to realize the detection of the polarization direction and coupling position of the laser, and the operation is simple, the detection efficiency is high and the result is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of laser testing equipment, in particular to a testing fixture and a laser testing device. Background Art

[0002] In fiber-optic communications, optical power has become an important factor limiting the development of optical modules, especially in high-speed communication networks. How to maximize the optical power of the laser in the optical module is an important way to reduce the cost of optical communications.

[0003] The laser emitted by the laser has polarization phenomenon. At the coupling position of the laser, the optical power of the laser reaches the maximum power. Therefore, the polarization direction and coupling position of the laser can be accurately detected, which is beneficial to improve the optical power, coupling efficiency and utilization rate of each laser, and improve the optical power of the entire optical module.

[0004] Existing laser detection equipment adjusts coupling in two degrees of freedom and can only measure the approximate polarization direction, but cannot determine the coupling position of the laser, resulting in unsatisfactory detection accuracy and efficiency. Utility Model Content

[0005] The utility model aims to provide a test fixture to alleviate the technical problems in the prior art that the coupling position of the laser cannot be determined and the detection accuracy and efficiency are not ideal.

[0006] The test fixture provided by the utility model comprises a base, a first clamping assembly, a horizontal adjustment assembly, a second clamping piece and a height adjustment assembly; the base has a bearing platform; the first clamping assembly has a clamping portion, and the clamping portion is arranged above the base; the horizontal adjustment assembly is arranged on the bearing platform, and is transmission-connected with the first clamping assembly to drive the first clamping assembly to move in a horizontal direction; the second clamping piece has a mounting portion, and the mounting portion is located above the clamping portion; the height adjustment assembly is arranged on the base, and the height adjustment assembly is connected with the second clamping piece to drive the mounting portion to move in a vertical direction.

[0007] Furthermore, the first clamping assembly includes a clamping frame and a horizontal adjustment seat; the clamping portion is arranged on the top of the clamping frame; the horizontal adjustment seat is arranged on the bearing platform, the clamping frame is arranged on the horizontal adjustment seat, and the horizontal adjustment seat is used to adjust the inclination angle of the clamping frame.

[0008] Furthermore, the bearing platform is a U-shaped slide; a locking piece is provided on the U-shaped slide, and the locking piece is used to fix the position of the U-shaped slide.

[0009] Furthermore, a clamping opening is provided at the top of the clamping frame; a screw is inserted into one side of the clamping opening, the screw is threadedly matched with the side wall of one side of the clamping opening, and the screw can move from the side wall of one side of the clamping opening to the side wall of the other side.

[0010] Furthermore, the horizontal adjustment component includes a first adjustment member and a second adjustment member; the first adjustment member and the second adjustment member are both transmission-connected to the first clamping component, and the driving directions of the first adjustment member and the second adjustment member are arranged at an angle.

[0011] Furthermore, the first adjusting member is disposed at the bottom of the first clamping assembly; the second adjusting member is disposed at the bottom of the first adjusting member and is located on the bearing platform.

[0012] Furthermore, the height adjustment assembly, the first adjustment member and the second adjustment member are all screw rods.

[0013] Furthermore, the height adjustment assembly, the first adjustment member and the second adjustment member are micrometers.

[0014] Furthermore, the test fixture also includes a rotating motor; the mounting portion is a mounting clamp; the rotating motor is transmission-connected to the mounting clamp, and the rotating shaft of the rotating motor is arranged along the vertical direction.

[0015] The utility model also aims to provide a laser testing device, which specifically comprises a laser receiving ferrule and a provided testing fixture; the ferrule is arranged on the mounting portion of the testing fixture, and the laser receiving end of the ferrule faces downward.

[0016] Beneficial effects:

[0017] The utility model provides a test fixture, comprising a base, a first clamping component, a horizontal adjustment component, a second clamping piece and a height adjustment component; the base has a bearing platform; the first clamping component has a clamping portion, which is arranged above the base; the horizontal adjustment component is arranged on the bearing platform, and is transmission-connected with the first clamping component to drive the first clamping component to move in a horizontal direction; the second clamping piece has a mounting portion, which is located above the clamping portion; the height adjustment component is arranged on the base, and the height adjustment component is connected with the second clamping piece to drive the mounting portion to move in a vertical direction.

[0018] Specifically, the first clamping component in the utility model can clamp and fix the laser, and the mounting portion of the second clamping component can install and fix the laser receiving core. When in use, the laser and the laser receiving core are fixed to the first clamping component and the second clamping component respectively, and the relative positions of the first clamping component and the second clamping component are changed by adjusting the height adjustment component and the horizontal adjustment component until the laser emitting end of the laser and the laser receiving end of the laser receiving core are abutted, and then the height adjustment component and the horizontal adjustment component are driven respectively until the optical power of the laser received by the laser receiving core reaches the maximum value, so that a test of the power of the laser output laser can be completed. After one test, the laser receiving core can be rotated to change the angle of the laser receiving core, and the test can be performed again. After multiple tests, the polarization direction of the laser and the coupling position in the polarization direction can be accurately obtained by comparing the results of multiple tests, thereby determining the position of the maximum power of the laser emitted by the laser. The utility model has a simple structure and a small size. When in use, the relative position of the laser and the laser receiving insert can be changed in three-dimensional space to detect the polarization direction and coupling position of the laser. The operation is simple, the detection efficiency is high and the result is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of the test fixture provided in the embodiment of the utility model Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of the test fixture provided in the embodiment of the utility model Figure 2 .

[0022] icon:

[0023] 100 - base;

[0024] 200 - first clamping assembly; 210 - clamping portion; 211 - clamping opening; 212 - screw rod; 220 - clamping frame; 230 - horizontal adjustment seat; 231 - locking member; 232 - arc surface;

[0025] 300 - horizontal adjustment component; 310 - first adjustment member; 320 - second adjustment member;

[0026] 400 - second clamping member; 410 - mounting portion;

[0027] 500 - Height adjustment assembly. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] See also Figure 1 , Figure 2 The test fixture provided by the utility model includes a base 100 , a first clamping component 200 , a horizontal adjustment component 300 , a second clamping component 400 and a height adjustment component 500 .

[0036] Specifically, the base 100 has a bearing platform. The first clamping assembly 200 has a clamping portion 210, and the clamping portion 210 is arranged above the base 100. The horizontal adjustment assembly 300 is arranged on the bearing platform and is transmission-connected with the first clamping assembly 200 to drive the first clamping assembly 200 to move in the horizontal direction. The second clamping member 400 has a mounting portion 410, and the mounting portion 410 is located above the clamping portion 210. The height adjustment assembly 500 is arranged on the base 100, and the height adjustment assembly 500 is connected with the second clamping member 400 to drive the mounting portion 410 to move in the vertical direction.

[0037] When using the utility model, the laser and the laser receiving ferrule are fixed to the first clamping component 200 and the second clamping component respectively, and the relative positions of the first clamping component 200 and the second clamping component are changed by adjusting the height adjustment component 500 and the horizontal adjustment component 300 until the laser emitting end of the laser and the laser receiving end of the laser receiving ferrule are abutted and the laser receiving end of the ferrule can receive the laser. At this time, the laser and the ferrule are determined to be in the initial position of the first detection.

[0038] Then, the height adjustment component 500 and the horizontal adjustment component 300 are driven respectively until the optical power of the laser received by the laser receiving ferrule reaches a maximum value, thereby completing a test of the output laser power of the laser.

[0039] After one test, the laser receiving ferrule can be rotated in the horizontal direction. Since the end face of the laser receiving end of the ferrule is an inclined surface, the incident angle of the laser into the ferrule can be changed after the ferrule is rotated in the horizontal direction. The test is performed again. In this embodiment, four tests are performed in total. Each time the laser receiving ferrule is rotated by 90°. After the test, the polarization direction of the laser and the coupling position in the polarization direction are accurately obtained by comparing the results of the four tests, thereby determining the position of the maximum power of the laser emitted by the laser.

[0040] The test fixture provided in this embodiment has a simple structure and a small size, and is easy to carry. When in use, it can realize the relative position change of the laser and the laser receiving ferrule in three-dimensional space, so as to realize the detection of the polarization direction and coupling position of the laser, and has simple operation, high detection efficiency and accurate results.

[0041] In this embodiment, the first clamping assembly 200 includes a clamping frame 220 and a horizontal adjustment seat 230. The clamping portion 210 is disposed on the top of the clamping frame 220. The horizontal adjustment seat 230 is disposed on the bearing platform, and the clamping frame 220 is disposed on the horizontal adjustment seat 230. The horizontal adjustment seat 230 is used to adjust the inclination angle of the clamping frame 220.

[0042] The laser is arranged on the clamping part 210 and connected to the horizontal adjustment seat 230 through the clamping frame 220. Before the detection, the horizontal degree of the laser can be adjusted through the horizontal adjustment seat 230, and the inclination angle of the laser can be adjusted to make the laser light output in a horizontal state, thereby ensuring the accuracy of the detection result.

[0043] In this embodiment, the carrying platform is a U-shaped slide. A locking member 231 is provided on the U-shaped slide, and the locking member 231 is used to fix the position of the U-shaped slide.

[0044] Specifically, the U-shaped slide includes a base and a slide that slidably cooperates with the base, the top surface of the base is a concave arc surface 232 in the middle, the locking member 231 is a threaded rod, and the bottom surface of the slide fits with the top surface of the base and is connected by the threaded rod. When adjusting the inclination of the U-shaped slide, the threaded rod can be rotated to move the bottom of the slide along the arc surface 232, while the clamping part 210 is tilted and the position remains unchanged, thereby adjusting the inclination angle of the laser fixed on the U-shaped slide.

[0045] In this embodiment, a clamping opening 211 is provided at the top of the clamping frame 220. A screw 212 is inserted at one side of the clamping opening 211, and the screw 212 is threadedly matched with a side wall of one side of the clamping opening 211, and the screw 212 can move from the side wall of one side of the clamping opening 211 to the side wall of the other side.

[0046] The screw 212 and the clamping opening 211 form the clamping portion 210. The laser is disposed in the clamping opening 211, and the screw 212 is rotated to move the end of the screw 212 toward the laser until both sides of the laser abut against the screw 212 and the side wall of the clamping opening 211, respectively. The screw 212 is stopped from rotating, and the laser is clamped and fixed in the clamping opening 211 by the screw 212 and the side wall of the clamping opening 211.

[0047] Fixing the laser by clamping the screw 212 is suitable for fixing lasers of various specifications and sizes, thereby improving the applicability of the test fixture.

[0048] In this embodiment, the horizontal adjustment assembly 300 includes a first adjustment member 310 and a second adjustment member 320. The first adjustment member 310 and the second adjustment member 320 are both transmission-connected to the first clamping assembly 200, and the driving directions of the first adjustment member 310 and the second adjustment member 320 are arranged at an angle.

[0049] Specifically, in the present embodiment, the driving directions of the first adjusting member 310 and the second adjusting member 320 are both horizontal directions. Since the driving directions of the two are set at an angle, when driving the horizontal adjustment seat 230 to move, the first adjusting member 310 and the second adjusting member 320 can drive the horizontal adjustment seat 230 to move in two different directions on the same plane, thereby realizing the horizontal movement of the horizontal adjustment seat 230.

[0050] In this embodiment, the first adjusting member 310 is disposed at the bottom of the first clamping assembly 200. The second adjusting member 320 is disposed at the bottom of the first adjusting member 310 and is located on the carrying platform.

[0051] In this structure, the first adjusting member 310 can directly drive the first clamping assembly 200 to move along the driving direction of the first adjusting member 310 . When the second adjusting member 320 drives the first clamping assembly 200 to move, the first adjusting member 310 moves along with the first clamping assembly 200 .

[0052] In this embodiment, a slide rail with an extension direction the same as the driving direction of the first adjustment member 310 is provided between the first adjustment member 310 and the horizontal adjustment seat 230. The horizontal adjustment seat 230 slides with the slide rail to reduce friction, making it easier for the first adjustment member 310 to drive the horizontal adjustment seat 230 to move.

[0053] Similarly, a slide rail is also provided between the first adjusting member 310 and the second adjusting member 320 , so that the second adjusting member 320 can drive the first adjusting member 310 and the first clamping assembly 200 to move together.

[0054] In this embodiment, the height adjustment assembly 500 , the first adjustment member 310 , and the second adjustment member 320 are all screw rods.

[0055] The screw rod in this embodiment is an external threaded rod, which can convert rotational motion into linear motion. When adjusting and driving, the components can be driven by rotating the external threaded rod.

[0056] Furthermore, the height adjustment assembly 500, the first adjustment member 310 and the second adjustment member 320 are micrometers.

[0057] A micrometer is a micrometer or micrometer screw, which has extremely high precision, specifically accurate to 0.01mm, and is very suitable for precise detection of the coupling point of the laser.

[0058] In this embodiment, the test fixture further includes a rotating motor. The mounting portion 410 is a mounting clamp. The rotating motor is in transmission connection with the mounting clamp, and the rotating shaft of the rotating motor is arranged in the vertical direction.

[0059] The rotating motor can drive the mounting frame to rotate in the horizontal direction. In this embodiment, the bottom surface of the ferrule is an inclined surface. After a test, the ferrule needs to be rotated to change the inclination angle of the bottom surface of the ferrule, thereby changing the incident angle of the laser into the ferrule. The ferrule is fixed on the mounting clamp, and the rotating motor drives the ferrule to rotate in the horizontal direction to adjust the inclination direction of the bottom surface of the ferrule. Compared with the method of manually changing the position, the ferrule does not need to be disassembled when rotating by the rotating motor, and the rotation angle of the ferrule can be accurately controlled.

[0060] The laser test device provided in this embodiment includes a laser receiving ferrule and a provided test fixture. The ferrule is arranged on the mounting portion 410 of the test fixture, and the laser receiving end of the ferrule faces downward.

[0061] The ferrule is used to detect the power of the laser emitted by the laser. When performing the test, the laser to be tested is fixed on the clamping portion 210, the relative position of the laser and the ferrule is adjusted, and after finding the coupling point of the laser, the optical power received by the ferrule is recorded, and the position is recorded, and then the ferrule is rotated to repeat the above steps again.

[0062] After the ferrule rotates one circle, compare the recorded optical powers, and the position of the optical power with the largest value is the coupling point in the polarization direction of the laser, that is, the point with the maximum optical power of the laser. During measurement, the laser test device provided in this embodiment can realize the relative position change of the laser and the laser receiving ferrule in three-dimensional space, so as to detect the polarization direction and coupling position of the laser, with simple operation, high detection efficiency and accurate results.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A test fixture, characterized in that: include: A base (100), a first clamping assembly (200), a horizontal adjustment assembly (300), a second clamping member (400) and a height adjustment assembly (500); The base (100) has a bearing platform; The first clamping assembly (200) has a clamping portion (210), and the clamping portion (210) is arranged above the base (100); The horizontal adjustment component (300) is arranged on the carrying platform and is transmission-connected to the first clamping component (200) to drive the first clamping component (200) to move in a horizontal direction; The second clamping member (400) has a mounting portion (410), and the mounting portion (410) is located above the clamping portion (210); The height adjustment component (500) is disposed on the base (100), and the height adjustment component (500) is connected to the second clamping member (400) to drive the mounting portion (410) to move in a vertical direction.

2. The test fixture according to claim 1, characterized in that: The first clamping assembly (200) comprises a clamping frame (220) and a horizontal adjustment seat (230); The clamping portion (210) is disposed on the top of the clamping frame (220); The horizontal adjustment seat (230) is arranged on the bearing platform, the clamping frame (220) is arranged on the horizontal adjustment seat (230), and the horizontal adjustment seat (230) is used to adjust the inclination angle of the clamping frame (220).

3. The test fixture according to claim 2, characterized in that: The bearing platform is a U-shaped slide; The U-shaped slide is provided with a locking member (231), and the locking member (231) is used to fix the position of the U-shaped slide.

4. The test fixture according to claim 2, characterized in that: The top of the clamping frame (220) is provided with a clamping opening (211); A screw rod (212) is inserted into one side of the clamping opening (211), and the screw rod (212) is threadedly engaged with a side wall of one side of the clamping opening (211), and the screw rod (212) can move from the side wall of one side of the clamping opening (211) to the side wall of the other side.

5. The test fixture according to claim 1, characterized in that: The horizontal adjustment component (300) comprises a first adjustment member (310) and a second adjustment member (320); The first adjusting member (310) and the second adjusting member (320) are both transmission-connected to the first clamping assembly (200), and the driving directions of the first adjusting member (310) and the second adjusting member (320) are arranged at an angle.

6. The test fixture according to claim 5, characterized in that: The first adjusting member (310) is arranged at the bottom of the first clamping assembly (200); The second adjusting member (320) is arranged at the bottom of the first adjusting member (310) and is located on the carrying platform.

7. The test fixture according to claim 5, characterized in that: The height adjustment assembly (500), the first adjustment member (310) and the second adjustment member (320) are all screw rods.

8. The test fixture according to claim 7, characterized in that: The height adjustment assembly (500), the first adjustment member (310) and the second adjustment member (320) are micrometers.

9. The test fixture according to claim 1, characterized in that: The test fixture also includes a rotating motor; The mounting portion (410) is a mounting clip; The rotating motor is transmission-connected to the mounting clamp, and the rotating shaft of the rotating motor is arranged in a vertical direction.

10. A laser testing device, characterized in that: A test fixture comprising a laser receiving ferrule and any one of claims 1 to 9; The ferrule is arranged on the mounting portion (410) of the test fixture, and the laser receiving end of the ferrule faces downward.

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