Polarization maintaining fiber fusion splicer

Abstract

The utility model is suitable for the technical field of optical fiber processing equipment, and provides a polarization maintaining optical fiber fusion splicer, which comprises a rack used for the installation of an adjusting device, a fusion splicing device and a cover turning device. A group of adjusting devices are arranged; the welding device is used for welding the two optical fibers, and the welding device is provided with a group of imaging devices; and the cover turning device is provided with a pressing piece and a positioning prism which are arranged on the back surface of a turning cover. According to the utility model, a group of adjusting devices in mirror symmetry are arranged to adjust the two optical fibers to be welded, and the imaging device is used for respectively acquiring the end face images of the optical fibers, so that an operator can adjust the two optical fibers to be aligned through the adjusting assembly according to the position information of the images; in the using process, the pressing piece is pressed on the two optical fibers, the positioning prism is matched with the imaging device to collect images so that the definition of the images can be improved, and after the two optical fibers are completely aligned, the two optical fibers are welded through the welding piece, and the yield of the optical fibers is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to optical fiber processing equipment technical field especially relates to a polarization maintaining optical fiber fusion splicer. BACKGROUND

[0002] Polarization maintaining optical fiber is a kind of special optical fiber, by increasing the inherent birefringence of optical fiber to overcome the influence of environmental factors on polarization state in optical fiber in transmission process, keep the polarization state of the light wave transmitted in optical fiber unchanged, widely used in aerospace, aviation, navigation, industrial manufacturing technology and communication etc. National economy in each field.

[0003] Polarization maintaining optical fiber works by causing a difference in the speed of light between the two perpendicular polarizations that pass through the fiber, this birefringence creates two main axes of transmission within the fiber, known as the fast and slow axes of the fiber: the fast axis is the direction of lower refractive index, one optical axis with faster light transmission speed, perpendicular to the midpoint of the center line of two stress regions, the slow axis is one optical axis passing through the end point of two stress regions, and the direction of high refractive index, transmission speed is slower.

[0004] In prior art, the operation step before the fusion of polarization maintaining optical fiber is: first, install optical fiber clamp to external axial recognition device, adjust and lock the polarization axis of polarization maintaining optical fiber, then transfer optical fiber clamp to ordinary single-mode optical fiber fusion splicer for fusion.The advantage of this offline method is that the axial recognition device is simple to design and implement, and there is no equipment integration problem, but the disadvantage is that manual fixture transfer operation cannot realize full-automatic polarization maintaining fusion, and cannot guarantee that the adjusted polarization axis remains unchanged after fixture transfer, which affects the yield of polarization maintaining optical fiber fusion. UTILITY MODEL CONTENTS

[0005] The utility model embodiment is to provide a kind of polarization maintaining optical fiber fusion splicer, to solve the operation step before the fusion of polarization maintaining optical fiber is: first, install optical fiber clamp to external axial recognition device, adjust and lock the polarization axis of polarization maintaining optical fiber, then transfer optical fiber clamp to ordinary single-mode optical fiber fusion splicer for fusion.The advantage of this offline method is that the axial recognition device is simple to design and implement, and there is no equipment integration problem, but the disadvantage is that manual fixture transfer operation cannot realize full-automatic polarization maintaining fusion, and cannot guarantee that the adjusted polarization axis remains unchanged after fixture transfer, which affects the yield of polarization maintaining optical fiber fusion.

[0006] The utility model embodiment is realized as follows, a polarization maintaining optical fiber fusion splicer, the polarization maintaining optical fiber fusion splicer includes:

[0007] Rack, the rack is used to adjust the installation of device, fusion device and flip device;

[0008] Adjusting device, which is arranged in mirror symmetry and installed on the frame, a group of the adjusting device is used to adjust two optical fibers to be aligned, the adjusting device is provided with adjusting assembly to align two optical fibers by moving and / or rotating;

[0009] Fusion device, which is used to fuse two optical fibers by the fusion element with current, the fusion device is provided with a group of imaging devices arranged in mirror symmetry, a group of the imaging devices is used to align the end faces of two optical fibers to facilitate the fusion element to fuse two optical fibers;

[0010] Flip device, which is provided with pressing element installed on the back of the flip and positioning prism, the pressing element is used to press two optical fibers by flipping the flip, the positioning prism is used to refract the image to facilitate the imaging device to collect the image of the end faces of two optical fibers.

[0011] Preferably, the adjusting device is further provided with clamping element, which is used to clamp the optical fiber, one end of the clamping element is installed on the adjusting assembly to facilitate the adjusting assembly to move the optical fiber by moving and / or rotating, the other end of the clamping element is installed on the fusion device, the clamping element is provided with mounting part and pressing part, the mounting part is plate-shaped, the top surface of the mounting part is provided with first mounting groove for mounting the optical fiber, the pressing part is rotationally connected with the mounting part to facilitate the pressing part to press the optical fiber on the mounting part.

[0012] Preferably, the adjusting assembly includes rotating assembly and moving assembly, the rotating assembly is connected with the clamping element, the rotating assembly is used to rotate the clamping element and the optical fiber on the clamping element to make two optical fibers rotate and reach the position requirement of the end faces of the optical fibers required for fusion, the moving assembly is installed on the bottom of the rotating assembly through the connecting frame, the moving assembly is provided with ball sliding group to move the rotating assembly and the clamping element to realize the fusion of two optical fibers.

[0013] Preferably, the fusion device is further provided with mounting frame and positioning seat, the mounting frame is used for the installation of the imaging device, the fusion element and the positioning seat, the positioning seat is used to position the optical fiber, the positioning seat is located between the two adjusting devices, the positioning seat is made of ceramic, the base of the positioning seat is provided with first power assembly for adjusting the position of the positioning seat, the first power assembly is used to move the positioning seat to adjust the position of the optical fiber positioned on the positioning seat.

[0014] Preferably, a group of the imaging devices is used to align the end faces of the optical fibers from opposite sides respectively, the base of the imaging device is provided with second power assembly, the second power assembly is used to move the imaging device to adjust the distance between the lens in the imaging device and the optical fiber.

[0015] Preferably, the cover device is installed on the upper surface of the frame, the cover is rotationally connected with the frame through a fixed shaft, and the cover is provided with a plurality of optical fibers for covering the adjusting device on the frame and the welding device, so that the imaging device can obtain the image of the end face of the optical fiber.

[0016] Preferably, the pressing members are installed on the back of the cover through first fixing members, the pressing members are provided with a plurality of pressing members for pressing and fixing two optical fibers respectively, the positioning prism is installed on the back of the cover through second fixing members and located between the two pressing members, the second fixing members are installed on the third power assembly, and the third power assembly is used for adjusting the position of the second fixing members and the positioning prism on the second fixing members, so that the imaging of the end face of the refractive optical fiber is facilitated.

[0017] Preferably, the frame is a hollow shell, the top surface of the frame is provided with a first mounting hole and a second mounting hole, the first mounting hole is used for mounting the adjusting device, and the second mounting hole is used for mounting the cover device.

[0018] Preferably, the polarization maintaining optical fiber fusion splicer further comprises a heating device and a display device, the heating device is installed on the top surface of the frame, the heating device is provided with a placing groove for placing the optical fiber after fusion, the heating device is used for heating the optical fiber in the placing groove to make it in a suitable temperature environment, and the display device is installed on the front surface of the frame and used for displaying the image collected by the imaging device.

[0019] The polarization maintaining optical fiber fusion splicer provided by the embodiment of the utility model, the frame is provided for installing the adjusting device, the welding device and the cover device, a group of mirror image symmetry adjusting devices are arranged to facilitate the adjustment of two optical fibers to be fused, the adjusting assembly of the adjusting device is used to drive the movement and / or rotation of the optical fiber, so that the two optical fibers are coaxially aligned to facilitate the fusion of the two optical fibers by the fusion member in the welding device, a group of mirror image symmetry imaging devices are arranged on the welding device, the imaging devices are used to collect the images of the end faces of the two optical fibers respectively, so that the operator can adjust the two optical fibers to be aligned according to the position information of the images through the adjusting assembly, the pressing members on the back of the cover device are pressed on the two optical fibers during use, and the positioning prism cooperates with the imaging device to collect the images, so that the clarity of the images is improved, and the two optical fibers are completely aligned and then fused by the fusion member, so that the yield of the optical fiber is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A perspective view of the polarization maintaining optical fiber fusion splicer provided by the embodiment of the utility model is shown in the figure;

[0021] Figure 2 A perspective view of the polarization maintaining optical fiber fusion splicer provided by the embodiment of the utility model is shown in the figure; A perspective view of the polarization maintaining optical fiber fusion splicer provided by the embodiment of the utility model is shown in the figure;

[0022] Figure 3 A structure schematic view of the adjusting device and the fusion device in the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model;

[0023] Figure 4 A structure schematic view of the adjusting device in the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model;

[0024] Figure 5 A structure schematic view of the fusion device in the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model;

[0025] Figure 6 A sectional view of the fusion device in the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model;

[0026] Figure 7 A structure schematic view of the flip device in the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model.

[0027] In the drawing: 1, rack; 2, adjusting device; 21, adjusting assembly; 211, rotating assembly; 212, moving assembly; 213, ball slide group; 22, clamping part; 221, mounting portion; 222, pressing portion; 3, fusion device; 31, imaging device; 311, second power assembly; 32, fusion part; 33, positioning seat; 331, first power assembly; 4, flip device; 41, fixed shaft; 42, pressing part; 43, positioning prism; 5, heating device; 6, display device; 7, optical fiber. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0029] The specific implementation of the utility model is described in detail below in combination with specific embodiments.

[0030] As Figures 1-2 shown, a structure diagram of the polarization maintaining optical fiber fusion splicer is provided for the embodiment of the utility model, comprising: a rack 1, the rack 1 is used for the installation of adjusting device 2, fusion device 3 and flip device 4;

[0031] Adjusting device 2, the adjusting device 2 is set up a group and is installed on the rack 1 and presents mirror image symmetry, a group of the adjusting device 2 is used for adjusting two optical fibers to make them align, the adjusting device 2 is provided with adjusting assembly 21 that makes two optical fibers align through moving and / or rotating;

[0032] The melting device 3 melts two optical fibers by the melting piece 32 with electricity, and a set of imaging devices 31 arranged in mirror symmetry are arranged on the melting device 3, and the set of imaging devices 31 are aligned with the end faces of the two optical fibers so as to melt the two optical fibers by the melting piece 32.

[0033] The flip device 4 is provided with a pressing piece 42 mounted on the back of the flip and a positioning prism, the pressing piece 42 presses the two optical fibers by turning the flip, and the positioning prism is used for refraction imaging so as to collect the image of the end face of the two optical fibers by the imaging device 31.

[0034] In the embodiment of the utility model, preferably, the polarization maintaining optical fiber melting machine is mainly used for melting two optical fibers together, can ensure that the polarization state of optical signal remains unchanged in the transmission process, is realized by accurately aligning the fast axis and the slow axis of the optical fiber in the melting process, the polarization maintaining optical fiber melting machine mainly consists of rack 1, adjusting device 2, melting device 3 and flip device 4, a set of adjusting device 2 is arranged on the top surface of rack 1 in parallel and the melting device 3 is located between the two adjusting device 2 so as to melt two optical fibers together by the melting piece 32, the flip of flip device 4 is rotatably installed on rack 1 so that the pressing piece 42 on the back of the flip is pressed on the two optical fibers, and the end face of the optical fiber is refracted by the positioning prism so as to collect the image by the imaging device 31, the position of the two optical fibers is adjusted according to the collected image by the user, and the two optical fibers are aligned by the moving and / or rotating action of the adjusting assembly 21, after the two optical fibers are aligned, the melting piece 32 in the melting device 3 melts them together, the polarization axis of the melted optical fiber remains unchanged, and the clear end face image is refracted to the imaging device 31 by the positioning prism, so that the user can adjust the two optical fibers to more accurate alignment according to the image and by using the adjusting assembly 21 of the adjusting device 2, the speed and accuracy of the axis are improved, the problem that the good product rate of polarization maintaining optical fiber melting is affected due to the operation of manual transfer clamp, full-automatic polarization maintaining melting cannot be realized, and the polarization axis adjusted after the transfer of the clamp cannot be ensured to remain unchanged is solved.

[0035] In one example of the utility model, the utility model sets up rack 1 for installing adjusting device 2, welding device 3 and flip device 4, sets up a group of mirror image symmetry's adjusting device 2 to adjust two optical fibers to be fused, the adjusting assembly 21 of adjusting device 2 is used to drive optical fiber movement and / or rotation to make two optical fibers aligning to the axis to make the fusion piece 32 in welding device 3 fuse two optical fibers, a group of mirror image symmetry installation imaging device 31 is set up on welding device 3, and imaging device 31 is used to collect the image of the end face of two optical fibers respectively to make the operator adjust two optical fibers to make them aligning according to the position information of image by adjusting assembly 21, and the compacting piece 42 on the back of flip device 4 is compacted on two optical fibers during use and cooperates with imaging device 31 to collect image to improve the definition of image, so that two optical fibers are completely aligned and are fused by fusion piece 32 to improve the yield of optical fiber.

[0036] As Figures 1-4 The adjusting device 2 is further provided with a clamping piece 22, the clamping piece 22 is used for clamping the optical fiber, one end of the clamping piece 22 is installed on the adjusting assembly 21 so that the adjusting assembly 21 drives the optical fiber to move and / or rotate, and the other end of the clamping piece 22 is installed on the welding device 3, the clamping piece 22 is provided with a mounting portion 221 and a compacting portion 222, the mounting portion 221 is plate-shaped, a first mounting groove for mounting the optical fiber is arranged on the top surface of the mounting portion 221, and the compacting portion 222 is rotationally connected with the mounting portion 221 so as to compact the optical fiber on the mounting portion 221.

[0037] In the embodiment of the utility model, preferably, the adjusting device 2 can be further provided with a clamping piece 22 for clamping the optical fiber, the optical fiber is placed on the first mounting groove of the mounting portion 221 of the clamping piece 22, the compacting portion 222 is pressed on the mounting portion 221 by being rotationally connected with the mounting portion 221 so as to fix the optical fiber completely on the clamping piece 22, one end of the mounting portion 221 of the clamping piece 22 is connected with the adjusting assembly 21 so that the optical fiber on the clamping piece 22 and the clamping piece 22 can be aligned by moving and / or rotating the clamping piece 22.

[0038] As Figures 1-4 The adjusting assembly 21 comprises a rotating assembly and a moving assembly 212, the rotating assembly is connected with the clamping piece 22, the rotating assembly is used for driving the clamping piece 22 and the optical fiber on the clamping piece 22 to rotate so that the two optical fibers rotate and reach the position requirement of the optical fiber end face required for fusion, the moving assembly 212 is installed at the bottom of the rotating assembly through a connecting frame, the moving assembly 212 is provided with a ball sliding group 213 for driving the rotating assembly and the clamping piece 22 to move to realize the fusion of the two optical fibers.

[0039] In the embodiment of the utility model, preferably, the adjusting assembly 21 is mainly provided with a rotating assembly for driving the clamping piece 22 to rotate, the rotating assembly can rotate by gears to finely adjust the optical fiber to improve the alignment accuracy, the rotating assembly is installed on the side of the clamping piece 22 to facilitate the rotating assembly to drive the clamping piece 22 and the optical fiber to rotate, and according to the image collected by the imaging device 31, the two optical fibers are adjusted and accurately aligned, the moving assembly 212 is installed below the rotating assembly and drives the rotating assembly and the clamping piece 22 to move through the gear transmission mode, so that the two optical fibers move towards each other to facilitate the fusion member 32 to fuse the two optical fibers together, the ball slide 213 is used on the moving assembly 212 to guide the movement of the clamping piece 22, the ball slide 213 can select IKO ball slide 213, the high-precision linear motion of the ball slide 213 is used to guide the movement of the optical fiber on the clamping piece 22 to ensure the alignment accuracy between the two optical fibers and ensure the fusion accuracy, and a reset device can also be arranged, after the optical fiber is fused, the clamping piece 22 can be reset to facilitate the next fusion.

[0040] As Figures 1-6 As shown in the heating device, as a preferred embodiment of the utility model, the fusion device 3 is further provided with a mounting bracket and a positioning seat 33, the mounting bracket is used for mounting the imaging device 31, the fusion member 32 and the positioning seat 33, the positioning seat 33 is used for positioning the optical fiber, the positioning seat 33 is located between the two adjusting devices 2, the positioning seat 33 is made of ceramic, and the base of the positioning seat 33 is provided with a first power assembly 331 for adjusting the position of the positioning seat 33.

[0041] In the embodiment of the utility model, preferably, the fusion device 3 is further provided with a mounting bracket installed between the two adjusting devices 2 to facilitate the installation of the imaging device 31, the fusion member 32 and the positioning seat 33, the positioning seat 33 made of ceramic is used to position the optical fiber to be fused at the end of the optical fiber to facilitate the fusion of the two optical fibers by the fusion member 32 after high-voltage power-on, and the first power assembly 331 for adjusting the position of the positioning seat 33 can also be arranged on the positioning seat 33, so that the position of the positioning seat 33 is adjusted after the optical fiber is adjusted and aligned, the positioning seat 33 positions the optical fiber to make the optical fiber positioning completely.

[0042] As Figures 1-6 As shown in the heating device, as a preferred embodiment of the utility model, a group of the imaging device 31 aligns the optical fiber end face from the opposite two sides, the base of the imaging device 31 is provided with a second power assembly 311, and the second power assembly 311 is used to drive the imaging device 31 to move to adjust the distance between the lens and the optical fiber in the imaging device 31.

[0043] In the embodiment of the utility model, preferably, a set of imaging devices 31 can be aligned with the corresponding fiber end faces from the oblique lower front and back respectively, at this time the lengths of the two optical fibers are respectively located on the clamping pieces 22 on the left and right sides, the fiber ends are positioned by the positioning seat 33, the fusion piece 32 is located on the same height position of the fiber end face, and the imaging device 31 can be moved under the power provided by the second power assembly 311 at the end of the imaging device 31 so that the position of the imaging device 31 can be adjusted so that the imaging device 31 can adjust the spacing with the fiber end face to obtain a clearer image on the fiber end face to ensure the accuracy of the axis.

[0044] As Figure 7 As shown in the display device, as a preferred embodiment of the utility model, the flip cover device 4 is installed on the upper surface of the rack 1, the flip cover is rotationally connected with the rack 1 through the fixed shaft 41, and the flip cover is provided with the optical fiber on the adjustment device 2 and the fusion device 3 on the rack 1 for covering so as to provide a clear environment for the welding of the optical fiber to realize that the imaging device 31 obtains the fiber end face image.

[0045] In the embodiment of the utility model, preferably, the flip cover device 4 can make the optical fiber welding play a certain dustproof and lightproof role to avoid external factors affecting the optical fiber alignment accuracy and the yield of optical fiber welding by using the flip cover, the flip cover is rotationally connected with the rack 1, the pressing piece 42 and the positioning prism are arranged on the back surface of the flip cover, the positioning of the optical fiber can be assisted by the positioning seat 33, and the positioning prism can make the imaging device 31 collect a clearer fiber end face image through refraction of the positioning prism to improve the yield of optical fiber welding.

[0046] As Figure 7 As shown in the display device, as a preferred embodiment of the utility model, the pressing piece 42 is installed on the back surface of the flip cover through the first fixing piece, the pressing piece 42 is provided with a set of pressing pieces 42 for pressing and fixing the two optical fibers respectively, the positioning prism is installed on the back surface of the flip cover through the second fixing piece and is located between the two pressing pieces 42, the second fixing piece is installed on the third power assembly, and the third power assembly is used for adjusting the position of the second fixing piece and the positioning prism on the second fixing piece to realize the imaging of the refracted fiber end face and facilitate the collection of the imaging device 31.

[0047] In the embodiment of the utility model, preferably, the pressing piece 42 can be installed on the back surface of the flip cover through the first fixing piece, a set of pressing pieces 42 are installed on the two sides of the positioning prism respectively, the pressing piece 42 and the positioning prism are perpendicular to the back surface of the flip cover respectively so as to vertically press the pressing piece 42 and the positioning prism after the flip cover is rotated to facilitate the positioning of the optical fiber, and the third power assembly is arranged on the second fixing piece for fixing the positioning prism to adjust the position of the positioning prism so that the picture refracted by the positioning prism can be adjusted according to the position of the optical fiber to facilitate the imaging device 31 to collect the fiber end face image.

[0048] As Figures 1-2 shown, as a preferred embodiment of the utility model, the rack 1 is hollow shell, the rack 1 top surface sets up first mounting hole and second mounting hole, the first mounting hole is used to install adjustment device 2, the second mounting hole is used to install flip device 4.

[0049] In the utility model embodiment, preferably, the rack 1 is provided with the first mounting hole for installing the adjustment device 2 on the top surface thereof, and is provided with the second mounting hole for installing the flip device 4, so that the adjustment device 2, the flip device 4 and the fusion device 3 can be supported by the rack 1.

[0050] As Figures 1-2 shown, as a preferred embodiment of the utility model, the polarization maintaining optical fiber fusion machine further comprises a heating device and a display device, the heating device is installed on the top surface of the rack 1, the heating device is provided with a placing groove for placing the fused optical fiber, the heating device is used to heat the optical fiber in the placing groove to keep it in a suitable temperature environment, and the display device is installed on the front face of the rack 1, and the display device is used to display the image collected by the imaging device 31.

[0051] In the utility model embodiment, preferably, the polarization maintaining optical fiber fusion machine can further be provided with a heating device installed on the top surface of the rack 1, the optical fiber fused by high-voltage power supply can be placed by using the heating device, so that the polarization performance of the fused optical fiber and the yield of fusion can be avoided to be affected by the temperature of the external environment, and the display device can be installed on the front face of the rack 1 to display the image collected by the imaging device 31, so that the user can adjust the position of the optical fiber on the image to accurately align the two optical fibers, thereby improving the yield of fusion.

[0052] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A polarization maintaining fiber fusion splicer, characterized by, The polarization maintaining optical fiber fusion splicer comprises: a rack for mounting the adjusting device, the fusion device and the flip device; a set of adjusting devices symmetrically arranged on the rack, the adjusting devices being used to adjust two optical fibers to be aligned, and each of the adjusting devices being provided with an adjusting assembly for moving and / or rotating the two optical fibers to be aligned; a fusion device for fusing the two optical fibers by a fusion element with electricity, the fusion device being provided with a set of imaging devices symmetrically arranged, each of the imaging devices being used to align the end faces of the two optical fibers to facilitate the fusion element to fuse the two optical fibers; a flip device provided with a pressing element mounted on the back of the flip and a positioning prism, the pressing element being used to press the two optical fibers by turning the flip, and the positioning prism being used to refract the image to facilitate the imaging device to capture the image of the end faces of the two optical fibers.

2. The polarization maintaining fiber fusion splicer of claim 1, wherein, The adjusting device is further provided with a clamping element for clamping the optical fibers, one end of the clamping element being mounted on the adjusting assembly to facilitate the adjusting assembly to move and / or rotate the optical fibers, and the other end of the clamping element being mounted on the fusion device, the clamping element being provided with a mounting portion and a pressing portion, the mounting portion being plate-shaped, the top surface of the mounting portion being provided with a first mounting groove for mounting the optical fibers, and the pressing portion being rotatably connected with the mounting portion to facilitate the pressing portion to press the optical fibers on the mounting portion.

3. The polarization maintaining fiber fusion splicer of claim 2, wherein, The adjusting assembly comprises a rotating assembly and a moving assembly, the rotating assembly being connected with the clamping element, the rotating assembly being used to rotate the clamping element and the optical fibers on the clamping element to rotate the two optical fibers and to reach the position requirement of the end faces of the optical fibers for fusion, and the moving assembly being mounted on the bottom of the rotating assembly through a connecting frame, the moving assembly being provided with a ball sliding group for moving the rotating assembly and the clamping element to realize the fusion of the two optical fibers.

4. The polarization maintaining fiber fusion splicer of claim 1, wherein, The fusion device is further provided with a mounting frame and a positioning seat, the mounting frame being used to mount the imaging devices, the fusion element and the positioning seat, the positioning seat being used to position the optical fibers, the positioning seat being located between the two adjusting devices, the positioning seat being made of ceramic, the base of the positioning seat being provided with a first power assembly for adjusting the position of the positioning seat, the first power assembly being used to move the positioning seat to adjust the position of the optical fibers positioned on the positioning seat.

5. The polarization maintaining fiber fusion splicer of claim 1, wherein, Each of the imaging devices is used to align the end faces of the optical fibers from the opposite sides, the base of the imaging device being provided with a second power assembly, the second power assembly being used to move the imaging device to adjust the distance between the lens of the imaging device and the optical fibers.

6. The polarization maintaining fiber fusion splicer of claim 1, wherein, The flip device is mounted on the upper surface of the rack, the flip being rotatably connected with the rack through a fixing shaft, the flip being provided with a cover for covering the optical fibers on the adjusting devices and the fusion device on the rack to provide a clear environment for the welding of the optical fibers and to realize the imaging device to capture the image of the end faces of the optical fibers.

7. The polarization maintaining fiber fusion splicer of claim 1, wherein, The pressing member is installed on the back of the flip cover through a first fixing member, the pressing member is provided with a set of pressing members for pressing and fixing two optical fibers respectively, the positioning prism is installed on the back of the flip cover through a second fixing member and is located between the two pressing members, the second fixing member is installed on a third power assembly, and the third power assembly is used for adjusting the position of the second fixing member and the positioning prism on the second fixing member to realize imaging of the end face of the refractive optical fiber and facilitate image acquisition of the imaging device.

8. The polarization maintaining fiber fusion splicer of claim 1, wherein, The rack is a hollow shell, the top surface of the rack is provided with a first mounting hole and a second mounting hole, the first mounting hole is used for mounting an adjusting device, and the second mounting hole is used for mounting a flip cover device.

9. The polarization maintaining fiber fusion splicer of claim 1, wherein, The polarization maintaining optical fiber fusion splicer further comprises a heating device and a display device, the heating device is installed on the top surface of the rack, the heating device is provided with a placing groove for placing the optical fiber after fusion, the heating device is used for heating the optical fiber in the placing groove to make it in a suitable temperature environment, and the display device is installed on the front surface of the rack and is used for displaying the image collected by the imaging device.

Images