A polarization maintaining optical fiber fast axis alignment clamp

Abstract

The utility model discloses a kind of polarization maintaining optical fiber fast alignment clamps, including base, the top of the base is fixedly installed with fixed seat, connector clamping structure is provided on the fixed seat, slidingly connected with movable seat on the base, the movable seat is located at the right side of fixed seat, adjusting screw rod one is rotatably connected on the base, the movable seat is screw-connected on adjusting screw rod one, polarization maintaining optical fiber clamping structure is provided on the movable seat.The utility model, by the double synchronous plate structure of adjusting screw rod two drive, cooperation adjustable pitch's screw hole design, can be flexibly adapted to a variety of models of polarization maintaining optical fiber connector, significantly improve the versatility of equipment, while using the precision cooperation of outer gear ring and transmission gear, combined with separable magnetic force locking mechanism, more fine angle adjustment can be realized, greatly improve the alignment accuracy, significantly improve the alignment accuracy and operation efficiency, especially suitable for the precision assembly scene of various polarization maintaining optical fiber devices.

Description

Technical Field

[0001] This utility model relates to the field of alignment equipment technology, and more specifically, to a polarization-maintaining fiber optic fast alignment clamp. Background Technology

[0002] Optical fiber is a communication line that uses optical transmission technology. It utilizes the principle of total internal reflection to transmit optical signals from the transmitting end to the receiving end. The core of an optical fiber is made of a high-refractive-index material, while the outer layer is clad with a low-refractive-index material. There are many types of optical fibers, among which polarization-maintaining fiber is frequently used in the development of polarization multiplexing technology and in the field of fiber optic sensing. Compared to single-mode fiber, polarization-maintaining fiber can maintain not only the power transmission incident on the fiber but also the polarization state of the light.

[0003] When connecting polarization-maintaining fiber to a connector adapter, it is necessary not only to align the fiber core coaxially with the connector adapter's ferrule, but also to precisely align the stress axis of the polarization-maintaining fiber with the key of the connector adapter. This typically involves injecting adhesive into the connector adapter's ferrule. After inserting the fiber core into the connector adapter's ferrule, the operator rubs the protective sleeve of the polarization-maintaining fiber with their fingers, rotating the fiber core and aligning it with the stress bar under an electron microscope. Quick-drying adhesive is then used to fix the orientation of the protective sleeve, locking the stress bar's direction. After the adhesive inside the connector adapter's ferrule has solidified, a blade dipped in alcohol is used to separate the fiber protective sleeve from the fixing point, and any remaining adhesive on the protective sleeve is cleaned off. This completes the alignment process.

[0004] When connecting different connectors, operators need to master the corresponding connection techniques, resulting in low connection efficiency. At the same time, because polarization-maintaining optical fibers are thin, rotating them by twisting their protective sleeves with fingers can easily cause excessive rotation, often requiring repeated twisting and adjustment, resulting in low alignment efficiency. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a fast alignment fixture for polarization-maintaining optical fibers, which aims to solve the above-mentioned background technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] A polarization-maintaining fiber quick alignment clamp includes a base, a fixed seat fixedly mounted on the top of the base, a connector clamping structure provided on the fixed seat, a movable seat slidably connected to the base, the movable seat being located to the right of the fixed seat, an adjusting screw rotatably connected to the base, the movable seat being threadedly connected to the adjusting screw rotatably, and an fiber clamping structure provided on the movable seat.

[0008] The connector clamping structure includes a through groove, which is opened on the fixed base. Two synchronous plates are slidably connected inside the through groove. An adjusting screw is rotatably connected to the inner wall of the through groove. The synchronous plates are threadedly connected to the adjusting screw. Threaded holes are opened on the synchronous plates.

[0009] The fiber optic clamping structure includes a clamping ring rotatably connected to the left side of the movable seat. An adjusting screw three is rotatably connected to the inner wall of the clamping ring, and two clamping plates are threaded onto the adjusting screw three. The clamping plates are slidably connected to the inner wall of the clamping ring. An external toothed ring is fixedly connected to the left side of the clamping ring, and a rotating shaft is fixedly installed on the right side of the movable seat. The other end of the rotating shaft passes through the movable seat and is connected to a transmission gear, which meshes with the outer side of the external toothed ring.

[0010] As a further description of the above technical solution: a magnet is connected to the right side of the movable seat, and a metal sheet is slidably connected to the rotating shaft, the metal sheet being magnetically connected to the magnet.

[0011] As a further description of the above technical solution: each of the two clamping plates has an arc-shaped groove on its opposite side, and a soft pad is connected to the inner wall of the arc-shaped groove.

[0012] As a further description of the above technical solution: the right side of the fixing seat is provided with equally spaced scale lines, which are located on the side of the through groove.

[0013] As a further description of the above technical solution: the right side of the fixing seat is provided with equally spaced scale lines, which are located on the side of the through groove.

[0014] As a further description of the above technical solution: two limiting grooves are provided on the top of the base, and the movable seat is slidably connected to the inner wall of the limiting groove.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] In this invention, the dual synchronous plate structure driven by the adjustable lead screw, combined with the adjustable spacing threaded hole design, can flexibly adapt to various types of fiber optic connectors, significantly improving the versatility of the equipment. At the same time, the precise cooperation between the external gear ring and the transmission gear, combined with the separable magnetic locking mechanism, enables more precise angle adjustment, greatly improving the alignment accuracy and operating efficiency. It is particularly suitable for precision assembly scenarios of various polarization-maintaining fiber optic devices. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a side view of the connector clamping structure of this utility model;

[0020] Figure 4 This is a side view of the optical fiber clamping structure of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Base; 2. Fixed base; 3. Connector clamping structure; 301. Through groove; 302. Synchronization plate; 303. Adjusting screw two; 304. Threaded hole; 4. Movable seat; 5. Adjusting screw one; 6. Fiber optic clamping structure; 601. Clamping ring; 602. Adjusting screw three; 603. Clamping plate; 604. External gear ring; 7. Rotating shaft; 8. Transmission gear; 9. Magnet piece; 10. Metal sheet; 11. Arc groove; 12. Soft pad; 13. Scale mark; 14. Limit groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0024] Please see Figure 1-4 In this utility model, a polarization-maintaining fiber optic quick alignment clamp includes a base 1, a fixed seat 2 fixedly installed on the top of the base 1, a connector clamping structure 3 provided on the fixed seat 2, a movable seat 4 slidably connected to the base 1, the movable seat 4 being located on the right side of the fixed seat 2, an adjusting screw 5 rotatably connected to the base 1, the movable seat 4 being threadedly connected to the adjusting screw 5, a fiber clamping structure 6 provided on the movable seat 4, a magnet 9 connected to the right side of the movable seat 4, and a metal sheet 10 slidably connected to a rotating shaft 7, the metal sheet 10 being magnetically connected to the magnet 9.

[0025] The connector clamping structure 3 includes a through groove 301, which is opened on the fixed base 2. Two synchronous plates 302 are slidably connected inside the through groove 301. An adjusting screw 303 is rotatably connected to the inner wall of the through groove 301. The synchronous plates 302 are threadedly connected to the adjusting screw 303. Threaded holes 304 are opened on the synchronous plates 302.

[0026] The fiber optic clamping structure 6 includes a clamping ring 601, which is rotatably connected to the left side of the movable seat 4. An adjusting screw 602 is rotatably connected to the inner wall of the clamping ring 601. Two clamping plates 603 are threaded onto the adjusting screw 602. The clamping plates 603 are slidably connected to the inner wall of the clamping ring 601. An arc-shaped groove 11 is opened on the opposite side of the two clamping plates 603. A soft pad 12 is connected to the inner wall of the arc-shaped groove 11. An external toothed ring 604 is fixedly connected to the left side of the clamping ring 601. A rotating shaft 7 is fixedly installed on the right side of the movable seat 4. The other end of the rotating shaft 7 passes through the movable seat 4 and is connected to a transmission gear 8. The transmission gear 8 meshes with the outer side of the external toothed ring 604. The diameter of the external toothed ring 604 is larger than the diameter of the transmission gear 8.

[0027] Two limiting grooves 14 are provided on the top of the base 1, and the movable seat 4 is slidably connected to the inner wall of the limiting groove 14.

[0028] When polarization-maintaining fiber optic cable needs to be connected to the axis, the operator first rotates the adjusting screw 303 to drive the two synchronous plates 302 to move towards each other in the through slot 301, and then adjusts the spacing of the threaded holes 304 to adapt to different specifications of fiber optic connectors.

[0029] After the connector is positioned and installed, insert the polarization-maintaining fiber into the clamping ring 601 from the right side. Manually rotate the adjusting screw 602 to make the two clamping plates 603 with soft pads 12 clamp the fiber along the arc groove 11. At this time, the fiber end face should protrude from the left end face of the clamping ring 601. Then, inject curing glue into the connector core. By precisely rotating the adjusting screw 5, push the movable seat 4 to slide to the left along the limiting groove 14 to make the fiber accurately inserted into the connector.

[0030] After initial curing, the horizontally sliding metal sheet 10 releases the magnetic lock with the magnet 9, at which point the rotating shaft 7 enters the operable state. Since the transmission gear 8 and the external gear ring 604 have different diameters, this speed reduction transmission mechanism can improve accuracy. The metal sheet 10 is relocked to maintain the position of the clamping ring 601. After the colloid is completely cured, the precise axial connection of the polarization-maintaining fiber is completed. During this process, the limiting groove 14 ensures the linearity of axial movement, the soft pad 12 avoids damage to the fiber surface, and the design of the large-diameter external gear ring 604 makes the micro-angle adjustment have a mechanical amplification effect.

[0031] In this invention, the dual synchronous plate 302 structure driven by the adjusting lead screw 2 303, combined with the adjustable spacing threaded hole 304 design, can flexibly adapt to various types of fiber optic connectors, significantly improving the versatility of the equipment. At the same time, the precise cooperation between the external gear ring 604 and the transmission gear 8, combined with the separable magnetic locking mechanism, enables more precise angle adjustment, greatly improving the alignment accuracy and operating efficiency. It is particularly suitable for precision assembly scenarios of various polarization-maintaining fiber optic devices.

[0032] Please see Figure 1 and 4 The fixed base 2 has equidistant scale lines 13 on its right side, and the scale lines 13 are located on the side of the through groove 301.

[0033] In this invention, when the user adjusts the position of the synchronization plate 302, the position of the synchronization plate 302 can be determined by the scale marks 13, thereby improving the adjustment accuracy.

[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A polarization-maintaining fiber optic quick-alignment clamp, comprising a base (1), characterized in that: A fixed seat (2) is fixedly installed on the top of the base (1). A connector clamping structure (3) is provided on the fixed seat (2). A movable seat (4) is slidably connected to the base (1). The movable seat (4) is located on the right side of the fixed seat (2). An adjusting screw (5) is rotatably connected to the base (1). The movable seat (4) is threadedly connected to the adjusting screw (5). An optical fiber clamping structure (6) is provided on the movable seat (4). The connector clamping structure (3) includes a through groove (301), which is opened on the fixed base (2). Two synchronous plates (302) are slidably connected inside the through groove (301). An adjusting screw (303) is rotatably connected to the inner wall of the through groove (301). The synchronous plate (302) is threadedly connected to the adjusting screw (303). A threaded hole (304) is opened on the synchronous plate (302). The fiber clamping structure (6) includes a clamping ring (601), which is rotatably connected to the left side of the movable seat (4). An adjusting screw three (602) is rotatably connected to the inner wall of the clamping ring (601). Two clamping plates (603) are threaded onto the adjusting screw three (602). The clamping plates (603) are slidably connected to the inner wall of the clamping ring (601). An external toothed ring (604) is fixedly connected to the left side of the clamping ring (601). A rotating shaft (7) is fixedly installed on the right side of the movable seat (4). The other end of the rotating shaft (7) passes through the movable seat (4) and is connected to a transmission gear (8). The transmission gear (8) meshes with the outer side of the external toothed ring (604).

2. The polarization-maintaining fiber quick-alignment clamp according to claim 1, characterized in that: A magnet (9) is connected to the right side of the movable seat (4), and a metal iron sheet (10) is slidably connected to the rotating shaft (7). The metal iron sheet (10) is magnetically connected to the magnet (9).

3. The polarization-maintaining fiber quick-alignment clamp according to claim 1, characterized in that: Each of the two clamping plates (603) has an arc-shaped groove (11) on one side opposite to the other, and a soft pad (12) is connected to the inner wall of the arc-shaped groove (11).

4. The polarization-maintaining fiber quick-alignment clamp according to claim 1, characterized in that: The right side of the fixed base (2) is provided with equally spaced scale lines (13), which are located on the side of the through groove (301).

5. A polarization-maintaining fiber quick-alignment clamp according to claim 1, characterized in that: The diameter of the external gear ring (604) is larger than the diameter of the transmission gear (8).

6. The polarization-maintaining fiber quick-alignment clamp according to claim 1, characterized in that: The base (1) has two limiting grooves (14) on its top, and the movable seat (4) is slidably connected to the inner wall of the limiting groove (14).

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