Optical fiber side edge polishing and grinding system

Abstract

The invention provides an optical fiber side edge polishing and grinding system, which belongs to the technical field of optical fiber polishing and grinding devices, and comprises a polishing and grinding mechanism for performing side edge polishing and grinding on the radial end surface of an optical fiber to be polished and ground to form a polishing and grinding plane; the polishing and grinding mechanism is arranged on the two-dimensional moving device and drives the polishing and grinding mechanism to reciprocate in the axial direction and the radial direction of the optical fiber to be polished and ground; the polishing and grinding mechanism reciprocates in the axial direction of the optical fiber to be polished and ground to control the polishing and grinding length of the polishing and grinding plane, and reciprocates in the radial direction of the optical fiber to be polished and ground to control the polishing and grinding depth of the polishing and grinding plane. The monitoring mechanism is used for monitoring the polishing and grinding part of the optical fiber in real time, the relative position of the polishing and grinding mechanism and the optical fiber is adjusted in real time according to the state of the optical fiber, and the side edge polishing and grinding length and polishing and grinding depth of the optical fiber are adjusted; a side polishing mode is adopted, the internal structure of the optical fiber cannot be damaged, and the method can be used for manufacturing special optical fiber couplers, processing D-type optical fibers in the sensing field and the like.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber polishers, in particular to an optical fiber side polishing system. Background Art

[0002] Fiber side polishing is a processing technology required in the field of fiber optic devices, such as the production of fiber optic couplers, fiber optic sensors, etc. As an important optical passive device in optical communication systems, the production technology of fiber optic couplers has developed to a relatively mature level. Commonly used methods include polished couplers, corrosion couplers, and micro-bend couplers. At present, the commonly used production methods for this device mainly include chemical etching and fused taper. These methods have disadvantages: they will destroy the internal structure of the optical fiber, change the core size, etc., and are difficult to use for the production of special fiber optic couplers.

[0003] In the field of fiber optic sensors, some special sensor heads require precise polishing of the optical fiber, and then further processing such as coating. The polishing length and depth of the optical fiber need to be precisely controlled, especially the polishing depth has a great impact on the performance of the sensor. The current method is relatively rough in controlling the polishing accuracy, the polishing length is limited, and the polishing accuracy is insufficient.

[0004] In short, the high-precision and long-stroke optical fiber side polishing system plays an important role in the field of optical fiber device processing. Summary of the invention

[0005] The object of the present invention is to provide an optical fiber side polishing system to solve at least one technical problem existing in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention provides an optical fiber side polishing system, comprising:

[0007] A polishing mechanism, used for performing side polishing on the radial end surface of the optical fiber to be polished fixed on the fixing device to form a polishing plane;

[0008] A two-dimensional moving device, on which the polishing mechanism is arranged; the two-dimensional moving device is used to drive the polishing mechanism to reciprocate along the axial direction and radial direction of the optical fiber to be polished;

[0009] The controller is used to control the two-dimensional moving device to drive the polishing mechanism to move accordingly to polish the optical fiber to be polished according to the polishing state of the optical fiber to be polished monitored by the monitoring mechanism; wherein the two-dimensional moving device drives the polishing mechanism to move back and forth along the axial direction of the optical fiber to be polished to control the polishing length of the polishing plane; the two-dimensional moving device drives the polishing mechanism to move back and forth along the radial direction of the optical fiber to be polished to control the polishing depth of the polishing plane.

[0010] Furthermore, the polishing mechanism includes a polishing motor installed on the two-dimensional moving device, the output shaft of the polishing motor is connected to a connecting rod, and the end of the connecting rod is connected to a polishing wheel.

[0011] Furthermore, a mounting frame is provided on the two-dimensional moving device, and the polishing motor is installed on the mounting frame.

[0012] Furthermore, the fixing device comprises a slide seat; a first lifting platform is slidably provided at both ends of the slide seat; and an optical fiber fixing seat is provided on the first lifting platform.

[0013] Furthermore, a second lifting platform is slidably provided on the slide seat; the second lifting platform is located between the two first lifting platforms.

[0014] Furthermore, an optical fiber pad is provided on the second lifting platform for supporting the optical fiber to be polished.

[0015] Furthermore, the second lifting platform is provided with piezoelectric ceramics, and the optical fiber pad is arranged on the piezoelectric ceramics.

[0016] Furthermore, the optical fiber fixing seat includes a bottom plate and a pressing plate detachably connected to the bottom plate.

[0017] Furthermore, the monitoring mechanism includes a translation slide rail, a liftable frame is slidably provided on the translation slide rail, and a monitoring camera is provided on the liftable frame.

[0018] Furthermore, the liftable frame includes an outer tube and an inner tube movably arranged inside the outer tube, and the outer tube is provided with a tightening knob; the top of the inner tube is provided with a U-shaped frame for connecting a monitoring camera.

[0019] The beneficial effects of the present invention are as follows: the polishing part of the optical fiber is monitored in real time by utilizing a monitoring mechanism, and the relative position of the polishing mechanism and the optical fiber is adjusted in real time according to the state of the optical fiber, so as to adjust the side polishing length and polishing depth of the optical fiber; the side polishing method is adopted without damaging the internal structure of the optical fiber, and can be used for the production of special optical fiber couplers.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a three-dimensional structural diagram of the optical fiber polishing system described in an embodiment of the present invention.

[0023] Figure 2 This is a front structural diagram of the optical fiber polishing system described in an embodiment of the present invention.

[0024] Figure 3 It is a side structural diagram of the optical fiber polishing system described in an embodiment of the present invention.

[0025] Figure 4 It is a top view of the structure of the optical fiber polishing system described in an embodiment of the present invention.

[0026] Figure 5 This is a flowchart of optical fiber polishing according to an embodiment of the present invention.

[0027] Figure 6 This is a microscope comparison diagram of a polished optical fiber and an unpolished optical fiber according to an embodiment of the present invention.

[0028] Figure 7 This is a comparison diagram of the cross sections of the optical fiber before and after polishing according to an embodiment of the present invention.

[0029] Figure 8 A comparison of optical fiber cross sections at different polishing depths according to an embodiment of the present invention.

[0030] Among them: 1-optical fiber to be polished; 2-two-dimensional moving device; 3-polishing motor; 4-connecting rod; 5-polishing wheel; 6-mounting frame; 7-sliding seat; 8-first lifting platform; 9-optical fiber fixing seat; 10-second lifting platform; 11-optical fiber pad; 12-piezoelectric ceramic; 13-bottom plate; 14-pressing plate; 15-translational slide rail; 16-lifting frame; 17-monitoring camera; 18-outer tube; 19-inner tube; 20-tightening knob; 21-U-shaped frame; 22-sliding block; 23-bolt; 24-sliding limit hole; 25-tightening bolt; 26-sliding block; 27-base. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0032] It should be understood by those skilled in the art that unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this invention belongs.

[0033] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with that in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0034] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or groups thereof.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0036] In the description of this specification, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of this specification, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present technology and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present technology.

[0038] Unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0039] To facilitate understanding of the present invention, the present invention is further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0040] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0041] like Figures 1 to 4 As shown, in this embodiment, a fiber side polishing system is provided, comprising: a polishing mechanism, for performing side polishing on the radial end face of the optical fiber 1 to be polished fixed on the fixing device to form a polishing plane; a two-dimensional moving device 2, on which the polishing mechanism is arranged; the two-dimensional moving device 2 is used to drive the polishing mechanism to reciprocate along the axial direction and radial direction of the optical fiber 1 to be polished; a controller, for controlling the two-dimensional moving device 2 to drive the polishing mechanism to perform corresponding movement to polish the optical fiber 1 to be polished according to the polishing state of the optical fiber 1 to be polished monitored by the monitoring mechanism; wherein the two-dimensional moving device 2 drives the polishing mechanism to reciprocate along the axial direction of the optical fiber 1 to be polished to control the polishing length of the polishing plane; the two-dimensional moving device 2 drives the polishing mechanism to reciprocate along the radial direction of the optical fiber 1 to be polished to control the polishing depth of the polishing plane.

[0042] The polishing mechanism includes a polishing motor 3 mounted on the two-dimensional moving device 2, the output shaft of the polishing motor 3 is connected to a connecting rod 4, and the end of the connecting rod 4 is connected to a polishing wheel 5. Specifically, a mounting frame 6 is provided on the two-dimensional moving device 2, and the polishing motor 3 is mounted on the mounting frame 6. The two-dimensional moving device 2 can drive the mounting frame 6 to move and adjust the position, and the mounting frame 6 drives the polishing motor 3 to move the position, and the rotation of the polishing motor 3 drives the connecting rod 4 to rotate, and the rotation of the connecting rod 4 drives the polishing wheel 5 to rotate, and the polishing wheel 5 rotates to perform side polishing on the optical fiber to be polished.

[0043] Wherein, the fixing device includes a slide 7; a first lifting platform 8 is slidably provided at both ends of the slide 7; and an optical fiber fixing seat 9 is provided on the first lifting platform 8. A second lifting platform 10 is also slidably provided on the slide 7; the second lifting platform 10 is located between the two first lifting platforms 8. An optical fiber pad 11 is provided on the second lifting platform 10 for supporting the optical fiber 1 to be polished. The two ends of the optical fiber to be polished are fixed on the optical fiber fixing seats 9 at both ends, and the optical fiber pad 11 on the second lifting platform 10 is used to support the part to be polished of the optical fiber to be polished. In order to be able to control the polishing depth more accurately, a piezoelectric ceramic 12 is provided on the second lifting platform 10, and the optical fiber pad 11 is arranged on the piezoelectric ceramic 12. Sliding limit holes 24 are provided on the slide 7 and the bottom edges of the first lifting platform 8 and the second lifting platform 10. After the first lifting platform 8 and the second lifting platform 10 are slid on the slide 7 along the sliding limit holes 24 to the desired positions, the lifting platforms are fixed by tightening the bolts 25 in cooperation with the sliding limit holes 24. For example, the first lifting platforms 8 at both ends are moved toward both ends to tighten the optical fiber to be polished to ensure reliable polishing.

[0044] Specifically, the optical fiber fixing seat 9 includes a bottom plate 13 and a pressing plate 14 detachably connected to the bottom plate 13. The bottom plate 13 is fixed to the top of the first lifting platform 8, and a threaded hole is provided on the bottom plate 13. The pressing plate 14 is provided with a threaded through hole corresponding to the threaded hole. The two ends of the optical fiber to be polished are placed on the bottom plates 13 at the two ends respectively, and then the bottom plate 13 and the pressing plate 14 are connected by bolts 23, and the optical fiber to be polished is pressed between the bottom plate 13 and the pressing plate 14.

[0045] The monitoring mechanism includes a translation slide rail 15, on which a lifting frame 16 is slidably provided, and a monitoring camera 17 is provided on the lifting frame 16. Specifically, the lifting frame 16 includes an outer tube 18 and an inner tube 119 movably provided in the outer tube 18; a tightening knob 20 is provided on the outer tube; and a U-shaped frame 21 for connecting the monitoring camera 17 is provided at the top of the inner tube 19. A slider 26 is provided in the slide groove of the translation slide rail 15, and the bottom end of the outer tube 18 is fixed on the slider 26.

[0046] The two-dimensional moving device adopts a two-dimensional electric translation stage of model RU150TA400H produced by Beijing Ruiyu Technology Co., Ltd. The controller model connected to the two-dimensional electric translation stage is RUMC400-200B, and the two-dimensional electric translation stage is controlled by the controller. The two-dimensional electric translation stage can drive the polishing mechanism to achieve left and right movement in the horizontal direction and lifting in the vertical direction. The lifting and lowering of the two-dimensional electric translation stage cooperates with the two first lifting platforms 8 and the second lifting platforms 10 on the slide 7 to achieve coarse adjustment of the polishing depth of the optical fiber to be polished; piezoelectric ceramics are used to finely adjust the polishing depth of the optical fiber. The two-dimensional electric translation stage drives the polishing mechanism to move left and right to achieve coarse adjustment of the side polishing length of the optical fiber.

[0047] In this embodiment, the distance that the polishing wheel moves up, down, left and right is controlled by a two-dimensional electric translation stage, and the maximum range and step size of the two-dimensional electric translation stage are directly related to the length and polishing depth of the side polishing part of the optical fiber. Therefore, the maximum range and step size of the two-dimensional electric translation stage are very important for the side polishing system. The two-dimensional electric translation stage controls the moving distance by the setting parameters of the X-axis and Y-axis on the controller, where the maximum range of left and right movement controlled by the X-axis is 400mm, and the screw lead is 5mm, and the maximum range of lifting and lowering movement controlled by the Y-axis is 20mm, and the screw lead is 2mm. Among them, the step size calculation formula of the two-dimensional electric translation stage is:

[0048]

[0049] Among them, d represents the step size of the electric displacement platform, L is the screw lead, α is the number of motor drive subdivisions, and β is the step angle of the motor. Therefore, when the step angle of the left and right displacement is 1.8° and the motor driver is 20 subdivisions, the step size of the lifting displacement is 0.5μm, and the step size of the left and right translation is 1.25μm, which can achieve micron-level control of the polishing depth (coarse adjustment). In addition, the piezoelectric ceramics set below the optical fiber to be polished can achieve nanometer-level height control, and cooperate with the electric displacement platform to further improve the control accuracy of the polishing depth (fine adjustment).

[0050] The polishing mechanism consists of a polishing motor and a polishing wheel or a polishing wheel, which can perform side grinding and polishing of the optical fiber after the coating layer is removed. To ensure the grinding accuracy, a motor with high concentricity should be selected for grinding.

[0051] The fixing device consists of two first lifting platforms, one second lifting platform, piezoelectric ceramics, an optical fiber fixing seat, and an optical fiber pad. The two first lifting platforms and the second lifting platform are placed parallel to the optical fiber to be polished, and the optical fiber fixing seats are placed on the top of the first lifting platforms on both sides to fix the optical fiber to be polished; the piezoelectric ceramics are placed on the top of the second lifting platform in the middle, and then the optical fiber pad is placed. There is a groove in the middle of the optical fiber pad to support the optical fiber to be polished. The first lifting platform and the second lifting platform can be manually adjusted to achieve the up and down movement of the optical fiber to be polished and the adjustment of the tension; with the help of piezoelectric ceramics, the polishing depth of the optical fiber can be finely adjusted. The optical fiber fixing seat and the optical fiber pad can fix multiple optical fibers, and can realize the side polishing of multiple optical fibers at the same time, greatly improving the completion efficiency of the side polishing of the optical fiber. In this embodiment, the first lifting platform and the second lifting platform are both AKV13A-60Z model lifting platforms.

[0052] The diameter of the optical fiber is very small and relatively brittle. If the position of the polishing wheel is too low, the optical fiber will break. Therefore, in the process of polishing the optical fiber, it is necessary to monitor the monitoring part of the optical fiber polishing condition in real time, and manually adjust the relative position of the polishing wheel and the optical fiber in real time according to the state of the optical fiber. Place the monitoring camera on the translation slide (AD140C-60) and fix it with the crab clamp chuck (Viltrox 55mm universal crab clamp) above the translation slide. The clamping range of the crab clamp is 0-55mm and can be rotated in all directions. During the polishing process, the monitoring camera can be aimed at the polishing part of the optical fiber by adjusting the position of the crab clamp. This microscope can be connected to the mobile phone through the network to transmit the picture of the optical fiber polishing part in real time, so as to observe the stability of the optical fiber during polishing and the degree of side polishing. By observing the picture of the microscope, the moving distance of the polishing wheel can be reasonably controlled to avoid the breakage of the optical fiber.

[0053] In this embodiment, the optical fiber side polishing system is installed as a whole on an aluminum alloy optical plate (base 27), which can ensure the stability of the system. Standard M6 screw holes are evenly distributed on the optical plate, which is convenient for installing and fixing various equipment.

[0054] In this embodiment, a four-mode step-index optical fiber is used, the diameter of the optical fiber cladding is 125 μm, the radius of the optical fiber core is 9 μm, the core refractive index is 1.4498, and the cladding refractive index is 1.444. Figure 5 As shown, the steps for making a side-polished optical fiber using the above-mentioned optical fiber side-polishing system are as follows:

[0055] (1) Build an optical fiber side polishing experimental platform and appropriately adjust the relative position of the polishing wheel and the optical fiber fixture to ensure that the polishing wheel can contact the optical fiber.

[0056] (2) Take out the optical fiber to be polished, remove the coating layer in the middle of the optical fiber, and set the length flexibly according to the needs. If it is a coupler, it is about 25mm. Put it on the optical fiber fixing seat and fix it.

[0057] (3) Turn on the control system of the two-dimensional electric displacement platform and set the moving distance and speed of the electric displacement platform. Adjust the position and magnification of the monitoring camera and other parameters so that it can clearly display the part where the optical fiber contacts the polishing wheel.

[0058] (4) Polish the side of the optical fiber. First, control the height of the high-precision electric displacement platform (two-dimensional electric displacement platform) and the first and second lifting platforms to adjust the relative position between the optical fiber to be polished and the polishing wheel to adjust the polishing length of the optical fiber and the rough adjustment of the depth of the optical fiber foam; secondly, use piezoelectric ceramics to fine-tune the depth of the optical fiber foam. During the adjustment, the polishing screen is monitored in real time through the monitoring camera to observe the polishing status of the optical fiber.

[0059] (5) After the rough grinding of the optical fiber is completed, in order to reduce the loss of optical power after polishing, it is necessary to remove the polishing wheel and replace it with a polishing wheel with abrasive paste for fine grinding to complete the polishing process of the optical fiber polishing surface.

[0060] (6) Remove the polished optical fiber and further observe the side-polished optical fiber under a biological microscope.

[0061] The monitoring camera captures the image during the polishing process. Figure 6 As shown, the upper part of the figure is the polished optical fiber, and the lower part of the figure is the polishing wheel. Figure 6 (a) shows an unpolished optical fiber. It can be found that the optical fiber is still cylindrical and just contacts the polishing wheel. Figure 6 (b) represents the optical fiber after polishing. The figure shows that two optical fibers are polished at the same time. It can be seen from the figure that the optical fiber after polishing has obvious arc-shaped transition area and flat area, and is not the original cylindrical shape.

[0062] Comparison of the cross-section of the optical fiber before and after polishing Figure 7 As shown. Figure 7 (a) is the cross section of the optical fiber before polishing. From the figure, it can be seen that the cross section of the optical fiber that has not been polished on the side is a complete circle. Figure 7 (b) is the cross section of the optical fiber after polishing. It can be seen from the figure that the cross section of the optical fiber after side polishing is D-shaped. After the side polishing is completed, the polished part of the optical fiber needs to be polished to reduce the loss of the optical fiber. There are two ways to polish. One is to apply abrasive paste on the grinding wheel and polish the polished part of the optical fiber. The other is to polish the polished part of the optical fiber with a higher mesh grinding paper.

[0063] The side polishing length of the optical fiber is related to the maximum range of the electric translation stage. When the translation stage moves at a low speed, stable polishing of the optical fiber can be achieved, and the side polishing length can reach the maximum range of 400mm. Figure 8 The cross-sections of optical fibers with different polishing degrees are compared under a microscope. In the figure, D represents the thickness of the polished side. Figure 8 D in (a) is 37.5 μm, Figure 8 In (b), D is 14.6 μm.

[0064] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative labor on the basis of the technical solution disclosed in the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical fiber side polishing system, characterized in that: include: A polishing mechanism, used for performing side polishing on the radial end surface of the optical fiber (1) to be polished, which is fixed on the fixing device, to form a polishing plane; A two-dimensional moving device (2), the polishing mechanism being arranged on the two-dimensional moving device; the two-dimensional moving device (2) is used to drive the polishing mechanism to move back and forth along the axial direction and radial direction of the optical fiber (1) to be polished; The controller is used for controlling the two-dimensional moving device (2) to drive the polishing mechanism to move accordingly to polish the optical fiber (1) to be polished according to the polishing state of the optical fiber (1) to be polished monitored by the monitoring mechanism; wherein the two-dimensional moving device (2) drives the polishing mechanism to move back and forth along the axial direction of the optical fiber (1) to be polished to control the polishing length of the polishing plane; and the two-dimensional moving device (2) drives the polishing mechanism to move back and forth along the radial direction of the optical fiber (1) to be polished to control the polishing depth of the polishing plane.

2. The optical fiber side polishing system according to claim 1, characterized in that: The polishing mechanism comprises a polishing motor (3) mounted on the two-dimensional moving device (2); the output shaft of the polishing motor (3) is connected to a connecting rod (4); the end of the connecting rod (4) is connected to a polishing wheel (5).

3. The optical fiber side polishing system according to claim 2, characterized in that: The two-dimensional moving device (2) is provided with a mounting frame (6), and the polishing motor (3) is mounted on the mounting frame (6).

4. The optical fiber side polishing system according to claim 1, characterized in that: The fixing device comprises a sliding seat (7); a first lifting platform (8) is slidably provided at both ends of the sliding seat (7); and an optical fiber fixing seat (9) is provided on the first lifting platform (8).

5. The optical fiber side polishing system according to claim 4, characterized in that: A second lifting platform (10) is also slidably provided on the slide seat (7); the second lifting platform (10) is located between the two first lifting platforms (8).

6. The optical fiber side polishing system according to claim 5, characterized in that: The second lifting platform (10) is provided with an optical fiber cushion block (11) for supporting the optical fiber (1) to be polished.

7. The optical fiber side polishing system according to claim 6, characterized in that: The second lifting platform (10) is provided with a piezoelectric ceramic (12), and the optical fiber pad (11) is arranged on the piezoelectric ceramic (12).

8. The optical fiber side polishing system according to claim 4, characterized in that: The optical fiber fixing seat (9) comprises a bottom plate (13) and a pressing plate (14) detachably connected to the bottom plate (13).

9. The optical fiber side polishing system according to claim 1, characterized in that: The monitoring mechanism comprises a translation slide rail (15), a liftable frame (16) is slidably provided on the translation slide rail (15), and a monitoring camera (17) is provided on the liftable frame (16).

10. The optical fiber side polishing system according to claim 9, characterized in that: The liftable frame (16) comprises an outer tube (18) and an inner tube (19) movably arranged in the outer tube (18); a tightening knob (20) is arranged on the outer tube; and a U-shaped frame (21) for connecting a monitoring camera (17) is arranged at the top of the inner tube (19).

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