Polarization maintaining optical fiber cold connection device

Abstract

The utility model discloses a polarization maintaining optical fiber cold connection device comprising an image display module which comprises a display screen and an image collector, and the display screen is electrically connected with the image collector; the optical fiber positioning and clamping module is arranged on one side of the image collector, and a first clamp is arranged at the top end of the optical fiber positioning and clamping module; the top end of the optical fiber angle adjusting module is provided with an angle adjusting mechanism, and the angle adjusting mechanism is provided with a second clamp; an angle adjusting mechanism; the first clamp and the second clamp can clamp the two ends of the polarization maintaining optical fiber respectively, and the end face of the polarization maintaining optical fiber is right opposite to the image collector. According to the utility model, the end face of the polarization maintaining optical fiber is opposite to the image collector, so that the positioning is simple, the time for adjusting the cold connection angle is saved, and the butt joint efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polarization maintaining optical fibers, in particular to a cold splicing device for polarization maintaining optical fibers. Background Art

[0002] Generally, an optical fiber is composed of a circular core region and a cladding region surrounding it. However, the end face structures of panda-type polarization maintaining optical fibers, elliptical core optical fibers, and multi-core optical fibers are more complex. The polarization maintaining optical fiber has stress regions on both sides of the core region, the multi-core optical fiber has multiple core regions in the cladding region, and the elliptical core optical fiber has an elliptical core region.

[0003] When fusing these optical fibers, the end faces of two optical fibers need to be fused at a specific angle. Therefore, the accuracy of the end face rotation angle alignment directly affects the fusion quality of these optical fibers. Thus, ensuring high-precision alignment during the polarization maintaining fusion of two optical fibers has become a key technology in practical applications.

[0004] The existing technology has the following several disadvantages in optical fiber alignment: 1. Image recognition is required. After algorithm processing, the motor of the fusion splicer is gradually adjusted to control the optical fiber angle, resulting in low efficiency; 2. Based on image alignment, recognition, and calculation of the fusion splicer, the motor is controlled to adjust the alignment angle of the polarization maintaining optical fiber and then fusion splicing is performed, resulting in high manufacturing costs; 3. High requirements are imposed on the image processing clarity and the motor control accuracy, and the process requirements are relatively complex.

[0005] Therefore, a cold splicing device for polarization maintaining optical fibers is now proposed to solve the above problems. Summary of the Invention

[0006] In order to overcome the deficiencies of the existing technology, the purpose of the utility model is to provide a cold splicing device for polarization maintaining optical fibers that can quickly adjust the angle based on the optical fiber end face image and realize the quick connection of polarization maintaining optical fibers through cold splicing.

[0007] The purpose of the utility model is realized by adopting the following technical solutions:

[0008] According to an embodiment of the present disclosure, a cold splicing device for polarization maintaining optical fibers is provided, which is characterized by comprising:

[0009] An image display module, the image display module includes a display screen and an image collector, and the display screen and the image collector are electrically connected;

[0010] An optical fiber positioning and clamping module, the optical fiber positioning and clamping module is arranged on one side of the image collector, and a first fixture is arranged at the top of the optical fiber positioning and clamping module; the optical fiber positioning and clamping module includes an optical fiber positioning block, the first fixture is arranged above the optical fiber positioning block, and a three-dimensional displacement stage is arranged below the optical fiber positioning block;

[0011] Optical fiber angle adjustment module, an angle adjustment mechanism is provided at the top of the optical fiber angle adjustment module, a second fixture is installed on the angle adjustment mechanism, and the angle adjustment mechanism can drive the second fixture to rotate; the angle adjustment mechanism includes a rotary adjustment table, the second fixture is installed above the rotary adjustment table, the rotary adjustment table is rotatably installed on a rotary adjustment base, and a three-dimensional displacement table is provided below the rotary adjustment base;

[0012] Wherein, the first fixture and the second fixture can respectively clamp both ends of the polarization-maintaining optical fiber, and the end face of the polarization-maintaining optical fiber is directly opposite to the image collector.

[0013] As a preferred solution, the three-dimensional displacement table includes:

[0014] A first sliding table, the first sliding table has a Z moving axis extending in the Z direction;

[0015] A second sliding table, the second sliding table is slidably arranged on the first sliding table through the Z moving axis, and the second sliding table has an X moving axis extending in the X direction;

[0016] A third sliding table, the third sliding table is installed on the second sliding table through the X moving axis, and the third sliding table has a Y moving axis extending in the Y direction;

[0017] Wherein, the Y direction is perpendicular to the X direction, and the Z direction is perpendicular to the X direction and the Y direction.

[0018] As a preferred solution, a Z moving groove corresponding to the Z moving axis is opened on the second sliding table; an X moving groove corresponding to the X moving axis is opened on the third sliding table.

[0019] As a preferred solution, the rotary adjustment base is L-shaped, the horizontal part of the rotary adjustment base is installed on the third sliding table through the Y moving axis, the vertical part of the rotary adjustment base rotatably installs a turntable, and the lower part of the turntable is connected to the rotary adjustment table.

[0020] As a preferred solution, a Y moving groove corresponding to the Y moving axis is opened on the horizontal part of the rotary adjustment base.

[0021] As a preferred solution, a circular groove is opened on one side of the turntable close to the vertical part of the rotary adjustment base, a circular rod is installed in the circular groove, and the end of the circular rod penetrates through the vertical part of the rotary adjustment base and extends outside the rotary adjustment base; wherein, internal gear teeth are arranged circumferentially on the inner side of the circular groove, external gear teeth are arranged circumferentially on the outer side of the circular rod, and the rotation of the circular rod can drive the turntable to rotate through the meshing transmission of the external gear teeth and the internal gear teeth.

[0022] As a preferred solution, a Y moving groove corresponding to the Y moving axis is opened on the optical fiber positioning block.

[0023] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0024] 1. The positioning method based on the reference line adjustment of the display screen in this application saves the time for adjusting the cold splicing angle;

[0025] 2. This application does not require image processing and then controlling the motor to adjust the angle through an algorithm for re-splicing, which greatly reduces the equipment cost and at the same time greatly improves the docking efficiency;

[0026] 3. By setting up a three-dimensional displacement stage, the rotary adjustment seat can move along the X direction, Y direction, and Z direction respectively without conflict. After adjusting the angle by rotating the round rod, it is convenient to realize the length positioning during cold splicing of optical fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall schematic diagram of the polarization-maintaining optical fiber cold splicing device of the utility model;

[0028] Figure 2 is the schematic diagram of the optical fiber positioning and clamping module of the utility model;

[0029] Figure 3 is the schematic diagram of the optical fiber angle adjustment module of the utility model;

[0030] Figure 4 is the side view of the three-dimensional displacement stage of the utility model;

[0031] The corresponding component names represented by the numbers and letters in the figure:

[0032] 110. Image display module; 111. Display screen; 112. Image collector;

[0033] 120. Optical fiber positioning and clamping module; 121. First fixture; 122. Optical fiber positioning block;

[0034] 130. Optical fiber angle adjustment module; 131. Angle adjustment mechanism; 132. Second fixture; 133. Rotary adjustment stage; 134. Rotary adjustment seat; 135. Turntable; 136. Round rod;

[0035] 140. Three-dimensional displacement stage; 141. First slide; 1411. Z movement axis; 142. Second slide; 1421. X movement axis; 143. Third slide; 1431. Y movement axis;

[0036] 150. Polarization-maintaining optical fiber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment: As Figures 1 to 4 shown, a polarization-maintaining optical fiber cold splicing device, characterized in that it includes:

[0039] An image display module 110, the image display module 110 includes a display screen 111 and an image collector 112, and the display screen 111 and the image collector 112 are electrically connected;

[0040] An optical fiber positioning and clamping module 120, the optical fiber positioning and clamping module 120 is arranged on one side of the image collector 112, and a first clamp 121 is arranged at the top of the optical fiber positioning and clamping module 120; the optical fiber positioning and clamping module 120 includes an optical fiber positioning block 122, the first clamp 121 is arranged above the optical fiber positioning block 122, and a three-dimensional displacement stage 140 is arranged below the optical fiber positioning block 122;

[0041] An optical fiber angle adjustment module 130, the top of the optical fiber angle adjustment module 130 is provided with an angle adjustment mechanism 131, a second clamp 132 is installed on the angle adjustment mechanism 131, and the angle adjustment mechanism 131 can drive the second clamp 132 to rotate; the angle adjustment mechanism 131 includes a rotation adjustment stage 133 and a rotation adjustment seat 134, the second clamp 132 is installed above the rotation adjustment stage 133, the rotation adjustment stage 133 is rotatably installed on the rotation adjustment seat 134, and a three-dimensional displacement stage 140 is arranged below the rotation adjustment seat 134;

[0042] Wherein, the first clamp 121 and the second clamp 132 can respectively clamp both ends of the polarization-maintaining optical fiber 150, and the end face of the polarization-maintaining optical fiber 150 is directly opposite to the image collector 112.

[0043] It should be noted that the optical fiber in this embodiment is a panda-type polarization-maintaining single-mode optical fiber.

[0044] It should be noted that the image collector can be any existing device on the market that can display a clear image of the end face of the polarization-maintaining optical fiber, which is not the content to be protected by this application, and its structural principle will not be elaborated here.

[0045] It should be noted that the three-dimensional displacement stage below the optical fiber positioning block 122 and the three-dimensional displacement stage below the rotation adjustment seat 134 are not the same component, but the structures of the two three-dimensional displacement stages are the same.

[0046] Specifically, the three-dimensional displacement stage 140 includes:

[0047] A first sliding stage 141 having a Z motion axis 1411 extending in the Z direction;

[0048] A second sliding stage 142 slidably disposed on the first sliding stage 141 through the Z motion axis 1411, and the second sliding stage 142 has an X motion axis 1421 extending in the X direction;

[0049] A third sliding stage 143 mounted on the second sliding stage 142 through the X motion axis 1421, and the third sliding stage 143 has a Y motion axis 1431 extending in the Y direction;

[0050] Wherein, the Y direction is perpendicular to the X direction, and the Z direction is perpendicular to the X direction and the Y direction.

[0051] Specifically, a Z motion groove corresponding to the Z motion axis 1411 is provided on the second sliding stage 142. Through the sliding fit between the Z motion groove and the Z motion axis, the second sliding stage 142 can move in the Z direction relative to the first sliding stage 141; an X motion groove corresponding to the X motion axis is provided on the third sliding stage 143. Through the sliding fit between the X motion groove and the X motion axis, the third sliding stage 143 can move in the X direction relative to the second sliding stage 142.

[0052] Specifically, the rotation adjustment base 134 is L-shaped. The horizontal part of the rotation adjustment base 134 is mounted on the third sliding stage 143 through the Y motion axis 1431, and a turntable 135 is rotatably mounted on the vertical part of the rotation adjustment base 134. The lower part of the turntable 135 is connected to the rotation adjustment stage 133.

[0053] Specifically, a Y motion groove corresponding to the Y motion axis 1431 is provided on the horizontal part of the rotation adjustment base 134. Through the sliding fit between the Y motion groove and the Y motion axis 1431, the rotation adjustment base 134 can move in the Y direction relative to the third sliding stage 143.

[0054] In this application, by providing the three-dimensional displacement stage, the rotation adjustment base can move in the X direction, Y direction, and Z direction respectively without conflict. Specifically, the position of the angle adjustment mechanism is adjusted by the three-dimensional displacement stage, and then after clamping with the first fixture, cutting is performed using a cutting tool. The position of the entire optical fiber positioning and clamping module is moved so that the optical fiber positioning and clamping module can adapt to the adjusted optical fiber to clamp the optical fiber, facilitating cold splicing.

[0055] Specifically, a circular groove is formed on one side of the turntable 135 close to the vertical portion of the rotation adjustment base 134. A round rod 136 is installed in the circular groove, and the end of the round rod 136 penetrates through the vertical portion of the rotation adjustment base 134 and extends outside the rotation adjustment base 134. Among them, internal gear teeth (not shown) are circumferentially arranged on the inner side of the circular groove, and external gear teeth (not shown) are circumferentially arranged on the outer side of the round rod 136 near one end of the circular groove. The rotation of the round rod 136 can drive the rotation of the turntable 135 through the meshing transmission between the external gear teeth and the internal gear teeth.

[0056] In this way, by rotating the round rod, the turntable can be driven to rotate, changing the position of the rotation adjustment table, so as to adjust the position of the panda eyes on the optical fiber clamped by the second clamp.

[0057] Specifically, the optical fiber positioning block 122 is provided with a Y movement groove corresponding to the Y movement axis 1431.

[0058] When using the polarization-maintaining optical fiber cold splicing device of the present application for cold splicing, the following steps are carried out:

[0059] A. Fiber stripping and cutting: Strip the coating layers at both ends of the polarization-maintaining optical fiber to be connected, clamp them onto the first clamp, and then use an optical fiber cutting knife to cut the optical fiber.

[0060] B. Obtain the optical fiber end face image by using the optical fiber end face image display module, and then adjust the position of the panda eyes of the polarization-maintaining optical fiber through the optical fiber angle adjustment module, so that the panda eyes are adjusted to be parallel to the positioning line based on the positioning line on the display screen of the display module.

[0061] C. Clamping: Place the cut optical fiber line together with the first clamp on the optical fiber positioning and clamping module. First, close the second clamp of the optical fiber angle adjustment module, and then open the first clamp of the optical fiber positioning and clamping module.

[0062] D. Angle adjustment: Adjust the panda eyes on the optical fiber end face to be parallel to the screen marking reference according to the display screen, and control the error within <3°.

[0063] E. Place on the cold splicer: Close the first clamp of the optical fiber positioning and clamping module, then open the second clamp of the optical fiber angle adjustment module, and place the first clamp holding the optical fiber on one end of the cold splicer.

[0064] F. Cold splicing: Repeat steps A - E, adjust the angle of the other optical fiber, and place it on the other end of the cold splicer. Cold splice the two optical fibers through the cold splicer to complete the cold splicing of the polarization-maintaining optical fiber.

[0065] It should be noted that the cold splicer can be any existing cold splicing device on the market, which is not the content to be protected by the present application, and its structural principle will not be elaborated here.

[0066] The above embodiments only illustrate several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can be made. These are all equivalent modifications and evolutions made to the above embodiments based on the substantial technology of the present utility model, and all of these fall within the protection scope of the present utility model.

Claims

1. A polarization-maintaining optical fiber cold connection device, characterized in that: include: An image display module, wherein the image display module comprises a display screen and an image collector, and the display screen and the image collector are electrically connected; An optical fiber positioning and clamping module, wherein the optical fiber positioning and clamping module is arranged on one side of the image collector, and a first clamp is arranged on the top of the optical fiber positioning and clamping module; the optical fiber positioning and clamping module comprises an optical fiber positioning block, the first clamp is arranged above the optical fiber positioning block, and a three-dimensional displacement stage is arranged below the optical fiber positioning block; An optical fiber angle adjustment module, wherein an angle adjustment mechanism is provided at the top of the optical fiber angle adjustment module, a second clamp is installed on the angle adjustment mechanism, and the angle adjustment mechanism can drive the second clamp to rotate; the angle adjustment mechanism comprises a rotating adjustment platform, the second clamp is installed above the rotating adjustment platform, the rotating adjustment platform is rotatably installed on the rotating adjustment seat, and a three-dimensional displacement platform is provided below the rotating adjustment seat; The first clamp and the second clamp can respectively clamp the two ends of the polarization-maintaining optical fiber, and the end face of the polarization-maintaining optical fiber is directly opposite to the image collector.

2. The polarization-maintaining optical fiber cold connection device according to claim 1, characterized in that: The three-dimensional translation stage comprises: A first slide having a Z motion axis extending along a Z direction; a second slide, the second slide being slidably disposed on the first slide via a Z motion axis, the second slide having an X motion axis extending along an X direction; A third slide, the third slide is mounted on the second slide via an X motion axis, and the third slide has a Y motion axis along the Y direction; The Y direction is perpendicular to the X direction, and the Z direction is perpendicular to the X direction and the Y direction.

3. The polarization-maintaining optical fiber cold connection device according to claim 2, characterized in that: The second slide is provided with a Z motion groove corresponding to the Z motion axis; the third slide is provided with an X motion groove corresponding to the X motion axis.

4. The polarization-maintaining optical fiber cold connection device according to claim 2, characterized in that: The rotary adjustment seat is L-shaped, the horizontal part of the rotary adjustment seat is installed on the third slide through the Y motion axis, and the vertical part of the rotary adjustment seat is rotatably installed with a turntable, and the lower part of the turntable is connected to the rotary adjustment platform.

5. The polarization-maintaining optical fiber cold connection device according to claim 4, characterized in that: The horizontal part of the rotation adjustment seat is provided with a Y motion groove corresponding to the Y motion axis.

6. The polarization-maintaining optical fiber cold connection device according to claim 4, characterized in that: The turntable is provided with a circular groove on one side of the vertical part close to the rotation adjustment seat, and a round rod is installed in the circular groove, and the end of the round rod passes through the vertical part of the rotation adjustment seat and extends to the outside of the rotation adjustment seat; wherein, the inner side of the circular groove is provided with inner gear teeth along the circumferential direction, and the outer side of the round rod is provided with outer gear teeth along the circumferential direction, and the rotation of the round rod can drive the turntable to rotate through the meshing transmission of the outer gear teeth and the inner gear teeth.

7. The polarization-maintaining optical fiber cold connection device according to claim 4, characterized in that: The optical fiber positioning block is provided with a Y motion groove corresponding to the Y motion axis.

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