Optical fiber clamp and collimation device

By designing fiber fixtures and six-axis drive components, the fiber positioning and fixing problems are solved, and the laser beam is collimated and efficient optical pumping is achieved. It is suitable for large-scale testing, reducing costs and improving efficiency.

CN222319193UActive Publication Date: 2025-01-07HANS LASER TECH IND GRP CO LTD +1
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Patent Information

Application Number
CN202420925246.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-29
Publication Date
2025-01-07
Estimated Expiration
2034-04-29

AI Technical Summary

Technical Problem

In the prior art, the optical fiber is small in size and is not easy to clamp, making it difficult to accurately position and fix in large-scale testing, and the collimating lens is costly and difficult to widely use.

Method used

An optical fiber clamp is designed, including a mounting base, first and second fixing members, to ensure positioning and fixing of the optical fibers through a V-shaped groove and a viscose layer, and to achieve collimation of the laser beam in combination with a six-axis drive assembly.

Benefits of technology

It realizes accurate positioning and fixing of optical fibers, reduces laser beam loss, and is suitable for large-scale optical pump testing, reducing costs and improving testing efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an optical fiber clamp and a collimating device, the optical fiber clamp comprises a mounting seat, a first fixing piece and a second fixing piece, the first fixing piece and the second fixing piece are arranged on the mounting seat at an interval, the first fixing piece is provided with a first positioning groove, and the second fixing piece is provided with a second positioning groove. During fixation, an optical fiber can be placed in the first positioning groove and the second positioning groove, a coating layer of the optical fiber is ensured to be aligned with the first positioning groove and the second positioning groove, and then the optical fiber is fixed in the first positioning groove and the second positioning groove through an adhesive so as to determine the positions of the optical fiber and the coating layer of the optical fiber. In the optical pumping process, a laser beam can enter and exit from the optical fiber through the coating layer from the side of the optical fiber clamp and the part, located between the first fixing piece and the second fixing piece, of the optical fiber, so that the laser beam enters the semiconductor material to be excited after being collimated, and the purpose of optical pumping is achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of lasers, in particular to an optical fiber clamp and a collimation device. Background Art

[0002] Optical pumping is the process of using a laser beam to excite semiconductor materials, generate electron-hole pairs, and form positive feedback under the action of the laser beam to achieve laser amplification.

[0003] When a laser chip is used to generate a laser beam, the laser beam needs to be collimated due to its divergence angle before exciting the semiconductor material. In the test phase, a collimating lens or optical fiber can be used to collimate the laser beam, but the cost of a collimating lens is high and is not suitable for use in large-scale tests; the cost of an optical fiber is low, but the size of the optical fiber is small and it is not easy to clamp. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present application provides an optical fiber clamp and an alignment device, which can realize the positioning and fixation of the optical fiber.

[0005] This embodiment adopts the following technical solutions:

[0006] An optical fiber clamp, comprising:

[0007] Mounting seat;

[0008] A first fixing member, wherein a first positioning groove is formed on the first fixing member; and

[0009] The second fixing member is arranged on the mounting seat at a distance from the first fixing member. The second fixing member is provided with a second positioning groove. The opening directions of the first positioning groove and the second positioning groove are the same, and the first positioning groove and the second positioning groove are located on the same straight line to accommodate an optical fiber together.

[0010] Furthermore, in the optical fiber clamp, the first positioning groove and the second positioning groove are both V-shaped grooves.

[0011] Furthermore, in the optical fiber clamp, the first fixing member and the second fixing member are both strip-shaped members or column-shaped members.

[0012] Furthermore, the optical fiber clamp also includes a connecting piece, the mounting seat is connected to the connecting piece, and the connecting piece is also used to connect to the driving assembly.

[0013] Furthermore, in the optical fiber clamp, the bottom surface of the connecting member is parallel to the opening direction of the first positioning groove and the opening direction of the second positioning groove.

[0014] A collimation device comprises an optical fiber and the above-mentioned optical fiber clamp, wherein a coating layer is provided on the side of the optical fiber, the optical fiber is arranged in the first positioning groove and the second positioning groove, and the coating layer faces the first positioning groove and the second positioning groove.

[0015] Furthermore, the collimating device further includes an adhesive layer, wherein the adhesive layer is arranged between the optical fiber and the first fixing member, and between the optical fiber and the second fixing member.

[0016] Furthermore, in the collimating device, the adhesive layer is an ultraviolet light curing adhesive layer.

[0017] Furthermore, the collimation device further includes a driving assembly, and the optical fiber clamp is arranged at the driving end of the driving assembly.

[0018] Furthermore, in the collimation device, the driving assembly is a six-axis driving assembly.

[0019] Compared with the prior art, the optical fiber clamp and collimation device provided in the present application can place the optical fiber in the first positioning groove and the second positioning groove, and ensure that the coating layer of the optical fiber is aligned with the first positioning groove and the second positioning groove, and then fix the optical fiber in the first positioning groove and the second positioning groove by adhesive to determine the position of the optical fiber and its coating layer. During the optical pumping process, the laser beam can be injected into and out of the optical fiber from the side of the optical fiber clamp, from the part of the optical fiber located between the first fixing member and the second fixing member, through the coating layer, so that the laser beam is collimated and then enters the semiconductor material for excitation to achieve the purpose of optical pumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the collimation device provided in this application.

[0021] Figure 2 for Figure 1 Front view of the collimation device shown.

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of the collimation device at point A is shown.

[0023] Among them, 10, mounting seat; 20, first fixing member; 21, first positioning groove; 30, second fixing member; 31, second positioning groove; 40, connecting member; 100, optical fiber. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Without further description, the elements, structures and features in one embodiment can also be beneficially combined with other embodiments.

[0025] It should be noted that when a metastructure is referred to as being "fixed to" or "set on" another metastructure, it may be directly on the other metastructure or indirectly on the other metastructure. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0026] The orientation or positional relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element structure referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0027] See also Figure 1 The present application provides an optical fiber clamp, which includes a mounting seat 10, a first fixing member 20 and a second fixing member 30, wherein the first fixing member 20 and the second fixing member 30 are arranged on the mounting seat 10 at intervals. Figure 2 and Figure 3 A first positioning groove 21 is formed on the first fixing member 20, and a second positioning groove 31 is formed on the second fixing member 30. The opening directions of the first positioning groove 21 and the second positioning groove 31 are the same, and the first positioning groove 21 and the second positioning groove 31 are located on the same straight line.

[0028] The first positioning groove 21 and the second positioning groove 31 are used to accommodate an optical fiber 100 at the same time to achieve the positioning of the optical fiber 100. Then, various adhesives, such as UV-curable glue, hot-melt adhesive, etc., can be used to fix the optical fiber 100 in the first positioning groove 21 and the second positioning groove 31 to prevent the optical fiber 100 from shifting, falling off, etc.

[0029] The optical fiber 100 is provided with a coating layer, that is, the side of the optical fiber 100 is coated with an anti-reflection film, also known as an anti-reflection film, which is a high-transmittance optical film that allows light energy to pass more completely. Its main function is to reduce or eliminate reflected light on the surface of optical components, thereby increasing the light transmittance of these optical components and reducing or eliminating stray light in the system.

[0030] During the collimation process, the laser beam enters the optical fiber 100 from one side through the coating layer, and after being collimated by the optical fiber 100, it is emitted from the other side of the optical fiber 100 through the coating layer. The coating layer can increase the transmittance of the optical fiber 100 and reduce the loss of the laser beam.

[0031] When the optical fiber 100 is coated with an anti-reflection film, the optical fiber 100 is laid flat, and the relevant coating equipment is limited by structure and cost, and usually the upper and lower sides of the optical fiber 100 are coated, while the front and back sides are not coated, that is, the coating layer does not cover the entire side of the optical fiber 100. During alignment, it is necessary to ensure that the laser beam is aligned with the side where the coating layer is located.

[0032] In the present application, when the optical fiber 100 is placed in the first positioning groove 21 and the second positioning groove 31, the coating layer of the optical fiber 100 can be aligned with the first positioning groove 21 and the second positioning groove 31 by machine or manually, and then the optical fiber 100 is fixed in the first positioning groove 21 and the second positioning groove 31 by adhesive. At this time, the setting direction of the coating layer is the same as the opening direction of the first positioning groove 21 and the second positioning groove 31, so as to determine the position of the coating layer of the optical fiber 100 by the first positioning groove 21 and the second positioning groove 31.

[0033] When the optical fiber 100 is fixed in the first positioning groove 21 and the second positioning groove 31, since the first fixing member 20 and the second fixing member 30 are arranged on the mounting base 10 at intervals, the mounting base 10 can be set at a suitable position so that the laser beam generated by the laser chip passes through the portion of the optical fiber 100 between the first fixing member 20 and the second fixing member 30, and then enters the semiconductor material for excitation, thereby achieving the purpose of optical pumping.

[0034] Therefore, the optical fiber 100 is positioned by the first positioning groove 21 and the second positioning groove 31, and then the optical fiber 100 is fixed in the first positioning groove 21 and the second positioning groove 31 by an adhesive. Even if the size of the optical fiber 100 is very small, for example, the diameter is a few millimeters or a few hundred microns, the optical fiber 100 will not shift or fall off. In addition, the optical fiber clamp has a simple structure and low cost, and is suitable for large-scale optical pumping test links.

[0035] In some embodiments, the first fixing member 20 and the second fixing member 30 are both strip-shaped or column-shaped, which can make the first fixing member 20 and the second fixing member 30 extend outward from the mounting seat 10 in a smaller volume, ensuring that the optical fiber 100 is separated from the mounting seat 10 by a certain distance to avoid laser interference.

[0036] Furthermore, the first positioning groove 21 can be disposed at a position close to the end of the first fixing member 20, i.e., away from the mounting seat 10, and the second positioning groove 31 can also be disposed at a position close to the end of the second fixing member 30, i.e., away from the mounting seat 10, so as to further increase the spacing distance between the optical fiber 100 and the mounting seat 10.

[0037] For example, the first fixing member 20 and the second fixing member 30 are two slender fixing columns, respectively, the first positioning groove 21 and the second positioning groove 31 are thin grooves opened at the ends of the two fixing columns, and the two fixing columns are spaced a certain distance apart, so that the laser passes through the optical fiber between the two fixing columns.

[0038] The first positioning groove 21 and the second positioning groove 31 may adopt various groove structures such as straight grooves, arc grooves, etc. Moreover, in some embodiments, the first positioning groove 21 and the second positioning groove 31 are both V-shaped grooves.

[0039] The two groove walls of the V-shaped groove form a taper angle. When the cylindrical optical fiber 100 is placed in the V-shaped groove, the two groove walls of the V-shaped groove fit the optical fiber 100 well, and the position of the optical fiber 100 can be accurately located.

[0040] In the actual positioning process, when placing the optical fiber 100 , the opening of the V-shaped groove may be directed upwards, and the cylindrical optical fiber 100 may be placed in the V-shaped groove from above, and the optical fiber 100 may be automatically positioned by gravity.

[0041] In some embodiments, the optical fiber clamp further includes a connector 40 , which is connected to the mounting base 10 , and the connector 40 is also used to connect to the driving end of the driving assembly.

[0042] When the connector 40 is connected to the driving end of the driving assembly, the driving assembly can drive the optical fiber clamp and the optical fiber 100 to move, so that the optical fiber 100 is in a suitable position, so that the laser beam can accurately pass through the optical fiber 100 and achieve the collimation of the laser beam.

[0043] Furthermore, the opening directions of the first positioning groove 21 and the second positioning groove 31 can be made parallel to the bottom surface of the connector 40, thereby determining the relative position and relative angle relationship between the optical fiber 100 and the connector 40, so as to facilitate the driving component to accurately adjust the position of the optical fiber 100.

[0044] The present application also provides a collimation device, including an optical fiber 100 and the above-mentioned optical fiber clamp, the optical fiber 100 is provided with a coating layer, and the optical fiber 100 is simultaneously arranged in the first positioning groove 21 and the second positioning groove 31, and the coating layer on the optical fiber 100 is oriented and aligned with the first positioning groove 21 and the second positioning groove 31.

[0045] When the collimation device is working, the optical fiber 100 is set at a suitable position through the optical fiber clamp, so that the laser beam can enter the optical fiber 100 through the coating layer from one side of the optical fiber 100, and after being collimated by the optical fiber 100, it is emitted from the other side of the optical fiber 100 through the coating layer.

[0046] In some embodiments, an adhesive layer is disposed between the optical fiber 100 and the first fixing member, and between the optical fiber 100 and the second fixing member.

[0047] The adhesive layer is located at the first positioning groove 21 and the second positioning groove 31, and its function is to connect the first fixing member and the optical fiber 100, and to connect the second fixing member and the optical fiber 100, so as to fix the optical fiber 100 in the first positioning groove 21 and the second positioning groove 31 to prevent the optical fiber 100 from shifting, falling off, etc.

[0048] The adhesive layer can be optionally a UV-curing adhesive layer. After the optical fiber 100 is set in the first positioning groove 21 and the second positioning groove 31, UV-curing adhesive is brushed on the corresponding position and irradiated with a UV lamp to quickly cure the UV-curing adhesive to form a UV-curing adhesive layer, thereby efficiently completing the fixation of the optical fiber 100.

[0049] In some embodiments, the collimation device further includes a driving assembly, and the optical fiber clamp is disposed at a driving end of the driving assembly.

[0050] The optical fiber clamp can be connected to the driving end of the driving assembly through the connector 40, and the driving assembly drives the optical fiber clamp and the optical fiber 100 to move, so that the optical fiber 100 is in a suitable position, so that the laser beam can accurately pass through the optical fiber 100 and achieve the collimation of the laser beam.

[0051] The opening directions of the first positioning groove 21 and the second positioning groove 31 can be made parallel to the bottom surface of the connector 40, thereby determining the relative position and relative angle relationship between the optical fiber 100 and the connector 40, so as to facilitate the driving component to accurately adjust the position of the optical fiber 100.

[0052] The drive assembly can be driven by a motor, a cylinder or other drive elements, and can be composed of single-axis, dual-axis, tri-axis or other drive modes. In some embodiments, the drive assembly is a six-axis drive assembly, that is, it includes three moving axes and three rotating axes, so that the optical fiber clamp can be moved to any position within the driving space and adjusted to any angle, ensuring that the laser beam passes through the optical fiber 100 from an accurate position to achieve collimation of the laser beam.

[0053] The collimation device provided in the present application can be applied to large-scale optical pumping test links, that is, multiple collimation devices are set up to correspond to the laser beams emitted by multiple laser chips, which effectively reduces the setting cost and improves the test efficiency.

[0054] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and application concept of the present application, and all these changes or substitutions should fall within the protection scope of the claims attached to the present application.

Claims

1. An optical fiber clamp, characterized in that: include: Mounting seat; A first fixing member, wherein a first positioning groove is formed on the first fixing member; as well as The second fixing member is arranged on the mounting seat at a distance from the first fixing member. The second fixing member is provided with a second positioning groove. The opening directions of the first positioning groove and the second positioning groove are the same, and the first positioning groove and the second positioning groove are located on the same straight line to accommodate an optical fiber together.

2. The optical fiber clamp according to claim 1, characterized in that: The first positioning groove and the second positioning groove are both V-shaped grooves.

3. The optical fiber clamp according to claim 1, characterized in that: The first fixing member and the second fixing member are both strip-shaped members or column-shaped members.

4. The optical fiber clamp according to claim 1, characterized in that: It also includes a connecting piece, the mounting seat is connected to the connecting piece, and the connecting piece is also used to connect the driving component.

5. The optical fiber clamp according to claim 4, characterized in that: The bottom surface of the connecting member is parallel to the opening direction of the first positioning groove and the opening direction of the second positioning groove.

6. A collimation device, characterized in that: It comprises an optical fiber and an optical fiber clamp as described in any one of claims 1 to 5, wherein a coating layer is provided on a side of the optical fiber, the optical fiber is arranged in the first positioning groove and the second positioning groove, and the coating layer faces the first positioning groove and the second positioning groove.

7. The collimation device according to claim 6, characterized in that: It also includes an adhesive layer, which is arranged between the optical fiber and the first fixing member, and between the optical fiber and the second fixing member.

8. The collimation device according to claim 7, characterized in that: The adhesive layer is an ultraviolet light curing adhesive layer.

9. The collimation device according to claim 6, characterized in that: It also includes a driving component, and the optical fiber clamp is arranged at the driving end of the driving component.

10. The collimation device according to claim 9, characterized in that: The driving assembly is a six-axis driving assembly.