Directly coupled y-waveguide polarization maintaining fiber sensing coil grinding and polishing device and method

Abstract

The application relates to a direct coupling Y waveguide polarization maintaining optical fiber sensitive ring grinding and polishing device and method, and the method comprises the following steps: obtaining a Y waveguide chip, opening an optical fiber mounting groove on the surface of the Y waveguide chip, and cutting a support block; mounting an optical fiber in the optical fiber mounting groove and curing through point gluing; coating wax on the surface of the support block with the optical fiber, fixing the support block in an optical fiber sensitive ring support block device, then measuring the height difference on both sides of a clamping plate, and adjusting the flatness of the clamping plate; mounting the optical fiber sensitive ring in an optical fiber sensitive ring fixing ring device, mounting the assembled optical fiber sensitive ring support block device and the optical fiber sensitive ring fixing ring device on a grinding and polishing clamp of a grinding and polishing machine, keeping the relative positions unchanged, starting the grinding and polishing machine, and grinding and polishing the support block. Compared with the prior art, the application has the advantages of more stable and reliable assembly grinding and polishing, and further reduced grinding and polishing vibration, grinding and polishing precision and efficiency, etc.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fiber optic sensing ring, in particular to a polishing device and method for directly coupling Y waveguide polarization maintaining fiber sensing ring. BACKGROUND

[0002] In the research and application of fiber optic sensing ring module, the polishing of the end face of the polarization maintaining fiber sensing ring directly coupled with the waveguide is a prerequisite for the direct coupling of the polarization maintaining fiber sensing ring and the Y waveguide chip.

[0003] In the research and application of fiber optic sensing ring module, the polishing of the end face of the polarization maintaining fiber sensing ring directly coupled with the waveguide is a prerequisite for the direct coupling of the polarization maintaining fiber sensing ring and the Y waveguide chip.

[0004] Then the current polishing technology of the end face of the fiber sensing ring coupled with the Y waveguide is mostly directly polished by the polishing machine, which has poor stability and low polishing precision control. SUMMARY

[0005] The present application is to overcome the defects of the prior art, that is, the direct polishing by the polishing machine, poor stability and low polishing precision control, and to provide a polishing device and method for directly coupling Y waveguide polarization maintaining fiber sensing ring.

[0006] The object of the present application can be achieved by the following technical solutions:

[0007] A polishing device and method for directly coupling Y waveguide polarization maintaining fiber sensing ring, comprising a fiber sensing ring support block device and a fiber sensing ring fixing ring device, the fiber sensing ring support block device is used to fix the support block and the fiber, the support block is made of a wafer and has a block structure, the surface of the support block is provided with a fiber mounting groove, and the fiber is mounted in the fiber mounting groove.

[0008] The fiber sensitive ring support block device comprises a support and a clamping plate, the support is a block structure, one end of the support is provided with a support block groove and a wire slot connected with each other, the support block is installed in the support block groove, the fiber is installed in the wire slot, and the clamping plate is detachably connected on both sides of the support to fix the support block and the fiber.

[0009] The fiber sensitive ring fixing ring device is used for fixing the fiber sensitive ring, and the fiber in the fiber sensitive ring is connected with the fiber sensitive ring support block device.

[0010] Further, the surface of the support block is provided with a plurality of fiber installation grooves.

[0011] Further, the support block is a cuboid structure.

[0012] Further, the fiber installation groove is a V-shaped groove.

[0013] Further, the inclination angle of the two ends of the V-shaped groove is 45 degrees.

[0014] Further, the clamping plate and the support are both provided with bolt holes, and the clamping plate is connected with the support through the bolt holes.

[0015] Further, the side of the support away from the support block groove is provided with a protruding block.

[0016] Further, the fiber sensitive ring fixing ring device comprises a base, a vertical screw rod, a ring support and a stop block, one end of the vertical screw rod is fixed on the base, the ring support and the stop block are both installed on the vertical screw rod, the number of the ring supports is multiple, the fiber sensitive ring is installed between two adjacent ring supports, and the stop block is connected with the vertical screw rod through threads and abuts against the ring support.

[0017] Further, the fiber sensitive ring fixing ring device comprises a lock buckle which is detachably fixed on the upper end of the vertical screw rod.

[0018] The application also provides a grinding and polishing method of the direct coupling Y waveguide polarization maintaining fiber sensitive ring grinding and polishing device, comprising the following steps:

[0019] Support block processing step: obtaining a Y waveguide chip, opening a fiber installation groove on the surface of the Y waveguide chip, and cutting the fiber installation groove into a support block;

[0020] Fiber ring axis setting step: installing the fiber in the fiber installation groove and curing through point gluing;

[0021] Support block bonding step: coating wax on the surface of the support block with the fiber installed, fixing the support block in the fiber sensitive ring support block device, then measuring the height difference on both sides of the clamping plate, and adjusting the flatness of the clamping plate;

[0022] Fiber ring assembly step: install the fiber sensitive ring on the fiber sensitive ring fixing ring device, install the assembled fiber sensitive ring support block device and the fiber sensitive ring fixing ring device on the polishing fixture of the polishing machine, and keep the relative position unchanged;

[0023] Fiber ring polishing step: start the polishing machine, so that the exposed side of the support block assembled with the fiber contacts the rotating polishing surface of the polishing machine to make periodic mechanical polishing, and sequentially complete the rough polishing, fine polishing and fine polishing processes.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] (1) In the polishing process using the above-mentioned fiber sensitive ring polishing device, the fiber sensitive ring support block device and the fiber sensitive ring fixing ring device are fixed by external equipment, and the exposed side of the support block assembled with the fiber contacts the rotating polishing surface of the polishing machine for polishing; to improve the polishing effect, the fiber sensitive ring support block device also rotates during polishing. In this fiber sensitive ring polishing device, the fiber sensitive ring is also fixed by the fiber sensitive ring fixing ring device, so that the fiber sensitive ring support block device and the fiber sensitive ring fixing ring device rotate synchronously, so that the fiber fixed on the support block and the fiber sensitive ring do not move relative to each other during rotation, meeting the rotation condition;

[0026] Overall, the technical scheme of the present application is used for directly coupling Y waveguide polarization maintaining fiber sensitive ring clamp assembly, which has the advantages of more stable and reliable polishing, thereby reducing polishing vibration, improving the polishing removal amount precision of the polarization maintaining fiber ring end face, reducing the stress area cracking of the polarization maintaining fiber sensitive ring end face after polishing, and improving the polishing efficiency.

[0027] (2) The fiber sensitive ring fixing ring device provided by the present application can set multiple ring supports on the same vertical screw rod, and the adjacent two ring supports can fix the fiber sensitive ring. The number of vertical screw rods installed on the base is also multiple, and a large number of fiber sensitive rings can be installed.

[0028] In the fiber sensitive ring support block device, the surface of the support block is provided with a plurality of V-shaped grooves, and a plurality of fibers can also be installed at the same time. The overall structure has strong loading capacity and high fixing stability. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The flowchart of the direct coupling Y waveguide polarization maintaining fiber sensitive ring polishing method provided in the embodiment of the present application is shown;

[0030] Figure 2 The structure diagram of the fiber sensitive ring support block device provided in the embodiment of the present application is shown;

[0031] Figure 3 A structure schematic view of a fiber mounting block provided in an embodiment of the present application;

[0032] Figure 4 A partial sectional schematic view of a fiber mounting groove provided in an embodiment of the present application;

[0033] Figure 5 A structure schematic view of a fiber sensitive ring support block device provided in an embodiment of the present application;

[0034] In the figure, 1, base, 2, vertical screw, 3, ring support, 4, stop block, 5, lock, 6, bracket, 7, clamping plate, 8, support block, 9, support block end face, 10, UV curing glue, 11, polarization maintaining fiber end face, 12, fiber stress area, 13, fiber mounting groove, 14, fiber. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0037] It should be noted that: similar numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] Furthermore, the terms "horizontal," "vertical," and the like are used as terms of convenience to provide reference frames for certain components. They do not imply absolute horizontal or vertical orientations. For example, "horizontal" merely means more horizontal than "vertical," and does not require that the structure be perfectly horizontal, but can be slightly tilted.

[0040] Embodiment 1

[0041] The embodiment provides a direct coupling Y waveguide polarization maintaining optical fiber sensing ring grinding and polishing device, which comprises an optical fiber sensing ring support block device and an optical fiber sensing ring fixing ring device.

[0042] The optical fiber sensing ring support block device comprises a support 6 and a clamping plate 7. The support 6 is a block structure, one end of the support 6 is provided with a support block groove body and a wire groove which are connected with each other, the support block 8 is installed in the support block groove body, and the optical fiber 14 is installed in the wire groove. The clamping plate 7 is detachably connected to two sides of the support 6, and the support block 8 and the optical fiber 14 are fixed.

[0043] The optical fiber sensing ring fixing ring device is used for fixing the optical fiber sensing ring. The optical fiber 14 in the optical fiber sensing ring is connected with the optical fiber sensing ring support block device.

[0044] The wafer is a raw material of the Y waveguide, and the wafer is a Y waveguide chip after being manufactured into a product.

[0045] The optical fiber sensing ring support block device and the optical fiber sensing ring fixing ring device are fixed by external equipment, and the relative positions of the optical fiber sensing ring support block device and the optical fiber sensing ring fixing ring device remain unchanged during the grinding and polishing process.

[0046] During the grinding and polishing process by using the above optical fiber sensing ring grinding and polishing device, the optical fiber sensing ring support block device and the optical fiber sensing ring fixing ring device are fixed by external equipment, one side of the support 6 which exposes the support block 8 assembled with the optical fiber 14 contacts a rotating grinding and polishing surface of a grinding and polishing machine to perform grinding and polishing. In order to improve the grinding and polishing effect, the optical fiber sensing ring support block device also rotates during the grinding and polishing process. In the optical fiber sensing ring grinding and polishing device, the optical fiber sensing ring is also fixed by the optical fiber sensing ring fixing ring device, so that the optical fiber sensing ring support block device and the optical fiber sensing ring fixing ring device rotate synchronously. Therefore, during the rotation process, the optical fiber 14 fixed on the support block 8 and the optical fiber sensing ring do not move relative to each other, and the rotation condition is met.

[0047] Overall, the technical scheme of the application is used for direct coupling Y waveguide polarization maintaining fiber sensitive ring clamp assembly, has more stable and reliable grinding and polishing, thereby reducing grinding and polishing vibration, improving grinding and polishing removal accuracy of the polarization maintaining fiber 14 ring end face, reducing polarization maintaining fiber sensitive ring end face stress zone cracking after grinding and polishing, and improving grinding and polishing efficiency and the like advantages.

[0048] As a preferred embodiment, the surface of the support block 8 is provided with a plurality of optical fiber mounting grooves 13, and a plurality of optical fibers 14 can be installed at the same time.

[0049] As a preferred embodiment, the support block 8 is a cuboid structure, which is convenient to install and fix, and makes the subsequent polishing surface a plane.

[0050] As a preferred embodiment, the optical fiber mounting groove 13 is a V-shaped groove, preferably a V-shaped groove with an inclination angle of 45 degrees at both ends, and the optical fiber can be fixed with the support block through dispensing later, and the V-shaped groove is convenient for the distribution and fixation of the curing glue.

[0051] In this embodiment, the clamping plate 7 and the support 6 are both provided with bolt holes, and the clamping plate 7 is connected to the support 6 through the bolt holes by bolts.

[0052] As a preferred embodiment, the side of the support 6 away from the support block groove body is provided with a protruding block, which is a cuboid structure, used for guiding the optical fiber 14 and clamping and fixing the support 6 by external equipment; in this embodiment, the number of protruding blocks is two, respectively located at both ends of the support, and the shape of the protruding block is a cuboid.

[0053] The preferred embodiments of the optical fiber sensitive ring fixing ring device are combined to obtain a corresponding optimal embodiment, and the structure and assembly process are described as follows:

[0054] As shown in Figures 2-4 The optical fiber sensitive ring fixing ring device includes a support 6, clamping plates 7 arranged on both sides of the support 6 to position the support block 8, a support block groove body and a wire slot are formed in the middle of the support 6, through fixing holes are arranged at both ends of the clamping plate 7 to fix the support 6 and the clamping plate 7 to clamp the support block 8, the optical fiber 14 is installed on the support block 8, and then the optical fiber 14 is fixed by dispensing, then the support block 8 is installed on the support 6 to be fixed by wax coating, and after the wax coating is warmed and bonded and solidified, the height difference on the upper surface of the support block is measured to ensure that the flatness is ± 15 um.

[0055] As a preferred embodiment, the optical fiber sensitive ring fixing ring device includes a base 1, a vertical screw rod 2, a ring support 3 and a stop block 4, one end of the vertical screw rod 2 is fixed on the base 1, the ring support 3 and the stop block 4 are both installed on the vertical screw rod 2, the number of ring supports 3 is multiple, the optical fiber sensitive ring is installed between two adjacent ring supports 3, and the stop block 4 is connected to the vertical screw rod 2 by screw threads and abuts against the ring support 3.

[0056] The same vertical screw rod can be provided with multiple ring holders, and the adjacent two ring holders can be fixed with the fiber sensitive ring. The number of vertical screw rods installed on the base is also multiple, and a large number of fiber sensitive rings can be installed.

[0057] As a preferred embodiment, the fiber sensitive ring fixing ring device comprises a lock 5 which is detachably fixed on the upper end of the vertical screw rod 2, and the lock prevents the stopper from popping out.

[0058] The preferred embodiment of the fiber sensitive ring fixing ring device is combined below to obtain a corresponding optimal embodiment, and the structure and assembly process are described as follows:

[0059] As shown in Figure 5 , the fiber sensitive ring fixing ring device comprises a base 1, a vertical screw rod 2 fixed on the base 1, a ring holder 3 connected and assembled on the vertical screw rod 2, a fiber sensitive ring clamped between the ring holders, a stopper 4 threadedly connected on the ring holder 3, and a lock 5 connected on the upper end of the stopper 4 to prevent the stopper from popping out. During assembly, the fiber sensitive ring is placed between the ring holders 3, and the connection between the fiber sensitive ring and the ring holder 3 is transitioned by the stopper 4, which is fixed by the lock 5. During polishing, the fiber sensitive ring is subjected to a vertical downward force by periodic mechanical motion of gravity cooperation rotation under the action of abrasive.

[0060] The end view of the fiber sensitive ring after polishing is shown in Figure 4 , the end surface of the support block 9, the UV curing glue 10, the end surface of the polarization maintaining optical fiber 11, and the end surface of the fiber stress area 12 are flat and smooth, and the fiber stress area has no cracking.

[0061] The embodiment also provides a polishing method for a direct coupling Y waveguide polarization maintaining optical fiber sensitive ring polishing device, which comprises the following steps:

[0062] Support block processing step: obtain a Y waveguide chip, open a fiber mounting groove (13) on the surface of the Y waveguide chip, and cut it into a support block (8);

[0063] Fiber ring axis setting step: install the optical fiber in the fiber mounting groove (13) and solidify it by dispensing;

[0064] Support block bonding step: apply wax to the surface of the support block (8) with the optical fiber installed, fix it in the fiber sensitive ring support block device, then measure the height difference between the two sides of the clamping plate (7), and adjust the flatness of the clamping plate (7);

[0065] Fiber ring assembly step: install the fiber sensitive ring on the fiber sensitive ring fixing ring device, and install the assembled fiber sensitive ring support block device and the fiber sensitive ring fixing ring device on the polishing fixture of the polishing machine, and keep the relative positions unchanged;

[0066] Fiber ring polishing step: start the polishing machine, so that the support (6) exposed to the assembly of the fiber (14) bearing block (8) a side contact with the rotating polishing surface of the polishing machine to rotate the periodic mechanical polishing, in turn, complete the rough grinding, fine grinding and fine polishing process.

[0067] As Figure 1 shown, the specific implementation process of the method is as follows:

[0068] (1) Bearing block processing: use a precision cutting machine to open a 45-degree V-shaped groove on the wafer surface with a groove width of 140x70um, and then cut the wafer into a bearing block with a length of 26x2.4mm and a width of 26x2.4mm. The edge collapse size control precision is ≤0.1mm;

[0069] (2) Fiber ring axis setting: clean the bearing block, and adjust the two fibers of the polarization maintaining fiber sensitive ring in the bearing block groove according to the axial direction. Apply UV curing glue, and the whole process requires uniform glue application and no pollution to avoid affecting the adhesive strength of the adhesive surface due to empty glue;

[0070] (3) Bearing block bonding: bond the bearing block with the polarization maintaining fiber sensitive ring after setting the axis, and press the tablet and solidify. Measure the height difference, and the flatness is required to be ±15um;

[0071] (4) Fiber ring assembly: clean the end face of the bonded fiber ring bearing block and the surface, and then assemble it on the polishing fixture. The fiber sensitive ring is fixed in the fiber sensitive ring fixing ring device, and the relative position of the fiber sensitive ring bearing block device is kept unchanged. Then, grind and polish;

[0072] (5) Fiber ring polishing: on the polishing machine, through the action of abrasive and polyurethane disc, periodic mechanical polishing is performed by gravity and rotation. First, rough grinding, then fine grinding, and finally fine polishing. Control the polishing removal amount during polishing, and check the polishing quality of the end face. The polished end face is required to be flat and smooth, and the fiber stress area should not be cracked.

[0073] In step (3), bonding is achieved through the fiber sensitive ring bearing block device. As shown in Figures 2-4 , the fiber sensitive ring bearing block device includes a support 6 and clamping plates 7 arranged on both sides of the support 6 to position the bearing block 8. The support 6 has a bearing block groove and a wire groove in the middle, and the clamping plates 7 have through fixing holes at both ends to fix the support 6 and the clamping plates 7 to clamp the bearing block 8. After waxing and warm bonding and solidification, measure the height difference on the upper surface of the bearing block to ensure that the flatness is ±15um.

[0074] In step (4), fiber sensitive ring polishing is achieved through the fiber sensitive ring fixing ring device. As shown in Figure 5As shown, including a base 1, set in the base 1 fixed with vertical screw 2, vertical screw 2 on the assembly with ring holder 3, between the ring holder clamping fiber sensitive ring, on the ring holder 3 with stop block 4, the upper end of the stop block 4 is connected with the lock 5, in the lock 5 prevent stop block pop out; Assembly, fiber sensitive ring between the ring holder 3 and ring holder 3, and keep the fiber sensitive ring and ring holder 3 by the transition of stop block 4, through the lock 5 fixed, through the effect of abrasive material under the gravity of the rotation of the periodic mechanical movement of the fiber sensitive ring exerted vertical downward force.

[0075] In step (5), the end face figure of the fiber sensitive ring after polishing and grinding is as shown in Figure 4 The end face 9 of the support block, the UV curing glue 10, the end face 11 of the polarization maintaining optical fiber and the end face of the fiber stress area 12 are flat and smooth, and the fiber stress area has no cracking.

[0076] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A direct coupling Y waveguide polarization maintaining fiber sensing ring grinding and polishing device, characterized in that, The application relates to a fiber sensitive ring support block device and a fiber sensitive ring fixing ring device, wherein the fiber sensitive ring support block device is used for fixing a support block (8) and a fiber (14), the support block (8) is made of a wafer and has a block structure, the surface of the support block (8) is provided with a fiber mounting groove (13), and the fiber (14) is mounted in the fiber mounting groove (13). The fiber sensitive ring support block device comprises a support frame (6) and a clamping plate (7), the support frame (6) has a block structure, one end of the support frame (6) is provided with a support block groove body and a wire groove which are connected with each other, the support block (8) is mounted in the support block groove body, the fiber (14) is mounted in the wire groove, and the clamping plate (7) is detachably connected to the two sides of the support frame (6) and is used for fixing the support block (8) and the fiber (14). The fiber sensitive ring fixing ring device is used for fixing a fiber sensitive ring, the fiber (14) in the fiber sensitive ring is connected with the fiber sensitive ring support block device. The fiber sensitive ring fixing ring device comprises a base (1), a vertical screw rod (2), a ring support (3) and a stopper (4), one end of the vertical screw rod (2) is fixed on the base (1), the ring support (3) and the stopper (4) are both mounted on the vertical screw rod (2), the number of the ring supports (3) is plural, the fiber sensitive ring is mounted between two adjacent ring supports (3), the stopper (4) is connected with the vertical screw rod (2) through screw threads and abuts against the ring support (3). The support block (8) has a cuboid structure.

2. The direct coupling Y waveguide polarization maintaining fiber sensing ring grinding and polishing device according to claim 1, characterized in that, The surface of the support block (8) is provided with a plurality of fiber mounting grooves (13).

3. The device according to claim 1, wherein, The fiber mounting groove (13) is a V-shaped groove.

4. The device according to claim 3, wherein, The inclination angle of the two ends of the V-shaped groove is 45 degrees.

5. The device according to claim 1, wherein, Bolt holes are formed in the clamping plate (7) and the support frame (6), and the clamping plate (7) is connected with the support frame (6) through the bolt holes.

6. The direct coupling Y-waveguide polarization maintaining fiber sensing ring polishing device according to claim 1, wherein, A protruding block is arranged on the side of the support frame (6) which is far away from the support block groove body.

7. The device according to claim 1, wherein, The fiber sensitive ring fixing ring device further comprises a lock buckle (5) which is detachably fixed on the upper end of the vertical screw rod (2).

8. A polishing method using the polishing apparatus for a directly coupled Y-waveguide polarization maintaining optical fiber sensitive ring according to claim 1, characterized by, The application further discloses a fiber sensitive ring processing method comprising the following steps: A support block processing step: a Y waveguide chip is obtained, a fiber mounting groove (13) is formed on the surface of the Y waveguide chip, and the Y waveguide chip is cut into a support block (8); A fiber ring axis fixing step: a fiber is mounted in the fiber mounting groove (13) and is fixed through point gluing; A support block bonding step: the surface of the support block (8) on which the fiber is mounted is coated with wax, the support block (8) is fixed in the fiber sensitive ring support block device, then the height difference between the two sides of the clamping plate (7) is measured, and the flatness of the clamping plate (7) is adjusted; A fiber ring assembling step: the fiber sensitive ring is mounted on the fiber sensitive ring fixing ring device, the assembled fiber sensitive ring support block device and the fiber sensitive ring fixing ring device are mounted on a grinding and polishing clamp of a grinding and polishing machine, and the relative positions are kept unchanged; A fiber ring grinding and polishing step: the grinding and polishing machine is started, one side of the support frame (6) which exposes the support block (8) assembled with the fiber (14) contacts a rotating grinding and polishing surface of the grinding and polishing machine to rotate and periodically mechanically grind and polish, and rough grinding, fine grinding and fine polishing processes are sequentially completed.

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