Polarization-maintaining optical fiber polishing and alignment equipment

Abstract

The present invention provides a polarization-maintaining optical fiber polishing and alignment device, which includes a table, a CCD detector, a grinding disc fixing assembly, and a grinding disc; the table is provided with a table through-hole running through the top and bottom, the CCD detector is adjustably mounted on the bottom of the table and arranged opposite to the table through-hole, and the grinding disc fixing assembly is mounted on the top of the table near the table through-hole; the grinding disc fixing assembly includes a tray assembly and a glass gasket, and the glass gasket is mounted on the tray assembly; the grinding disc is rotatably mounted on the tray assembly, the grinding disc is located above the glass gasket, the grinding disc and the glass gasket are parallel and coaxially arranged, and a limiting gap is formed between the two opposing sides of the grinding disc and the glass gasket. The polarization-maintaining optical fiber polishing and alignment device of the present invention can ensure that the cat's eye connection line is parallel to the edge line of the grinding disc, thereby improving the angle alignment accuracy.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber technology, and in particular to a polarization-maintaining optical fiber polishing and alignment device. Background Art

[0002] When grinding common polarization-maintaining optical fiber pigtails, it is necessary to ensure that the connection line of the pigtail cat's eye and the connection line of the high and low ends of the 8-degree surface have a specific positional relationship. Place the polarization-maintaining optical fiber and grinding disc under a microscope, place the capillary from bottom to top into the V-groove of the grinding disc used to fix the optical fiber, and gently rotate the optical fiber head with hands or tweezers under a 40X microscope so that the direction of the optical fiber cat's eye is parallel to the end face of the grinding disc side frame. Then, turn the motor screw to fix the pigtail and then grind.

[0003] However, the current microscope equipment is blurry when viewed at low magnification, and it is impossible to accurately determine whether the line connecting the pigtail cat's eye is parallel to the edge line of the grinding disk, which is not accurate enough. In addition, when the product is inserted into the grinding disk, there is no limit clamp, which makes it easy for the pigtail length to be inconsistent when loading the disk, resulting in insufficient grinding accuracy. Summary of the Invention

[0004] The main purpose of the present invention is to provide a polarization-maintaining optical fiber polishing and alignment device that ensures that the cat's eye connection line is parallel to the edge line of the polishing disk and improves the angle alignment accuracy.

[0005] In order to achieve the above-mentioned main purpose, the polarization-maintaining optical fiber polishing and alignment equipment provided by the present invention includes a table, a CCD detector, a grinding disk fixing assembly and a grinding disk; the table is provided with a table through hole running through the top and the bottom, the CCD detector can be adjusted and installed at the bottom of the table and arranged opposite to the table through hole, and the grinding disk fixing assembly is installed at the top of the table near the table through hole; the grinding disk fixing assembly includes a tray assembly and a glass gasket, and the glass gasket is installed on the tray assembly; the grinding disk can be rotatably installed on the tray assembly, the grinding disk is located above the glass gasket, the grinding disk and the glass gasket are parallel and coaxially arranged, and a limiting gap is formed between the two opposite sides of the grinding disk and the glass gasket.

[0006] As can be seen from the above scheme, the polarization-maintaining optical fiber grinding and alignment equipment of the present invention adopts the CCD detector, which can more easily observe the alignment of the optical fiber, ensure that the line connecting the cat's eye is parallel to the edge line of the grinding disk, and improve the angle alignment accuracy. At the same time, through the combination of the glass gasket set on the tray and the grinding disk, a limiting gap is formed between the two opposite sides of the grinding disk and the glass gasket, so that the glass gasket has a limiting function, ensuring the consistency of the exposed length of the grinding disk after the pigtail is installed, and the glass gasket is transparent, so the microscope can be directly observed through the glass gasket, better ensuring that the line connecting the cat's eye is parallel to the edge line of the grinding disk. In addition, the CCD detector is installed at the bottom of the table and the grinding disk is installed on the top of the table, which can facilitate the installation and adjustment of the optical fiber and save desktop work space.

[0007] In a further solution, the grinding disc includes a clamping disc and a plurality of side frames. A plurality of V-groove groups are evenly arranged around the periphery of the clamping disc, and each side frame is installed in conjunction with one V-groove group.

[0008] It can be seen that through multiple V-groove groups and multiple side frames, multiple groups of optical fibers can be installed for polishing, thereby improving efficiency.

[0009] In a further solution, the tray assembly includes a tray and a tray base, the first end of the tray is provided with a cylindrical groove, the first end of the tray base is provided with a cylindrical boss, and the boss is inserted into the groove.

[0010] It can be seen that the tray and the tray base are connected by the protrusions and grooves, and the tray can be rotated 360 degrees horizontally, which can improve the efficiency of viewing products.

[0011] In a further solution, a cylindrical clamping disc groove is provided at the bottom of the clamping disc, and the second end of the tray is cylindrical, and the second end of the tray is inserted into the clamping disc groove.

[0012] It can be seen that the second end of the tray is inserted into the groove of the clamping disk, which can make the rotation of the clamping disk more stable.

[0013] In a further solution, the tray is provided with a limiting portion, which is arranged around the outer peripheral wall of the tray; and the glass gasket is installed on the limiting portion.

[0014] It can be seen that the setting of the limiting portion can facilitate the installation and removal of the glass spacer, and the glass spacer can be directly mounted on the tray.

[0015] In a further solution, a first axial through hole passing through the pallet is provided at the axial position of the pallet, a second axial through hole passing through the pallet base is provided at the axial position of the pallet base, and a third axial through hole passing through the clamp disk is provided at the axial position of the clamp disk. The first axial through hole, the second axial through hole and the third axial through hole are coaxially arranged; the first axial through hole, the second axial through hole and the third axial through hole cooperate to form a through hole for accommodating a fixing bolt.

[0016] It can be seen that by setting the first axial through hole, the second axial through hole and the third axial through hole to form a through hole for accommodating the fixing bolt, the clamp disk can be ensured to rotate about the axis when rotating, thereby improving the stability of the rotation of the clamp disk and facilitating the observation of the alignment situation.

[0017] In a further solution, the grinding disc also includes a grinding disc base, which is detachably connected to the clamping disc; the grinding disc base is provided with a plurality of optical fiber through holes, and each optical fiber through hole is respectively arranged opposite to a V-groove group.

[0018] It can be seen that the grinding disc base can be provided to facilitate the movement of the grinding disc, and the plurality of optical fiber through holes can be provided to facilitate the installation of optical fibers.

[0019] In a further solution, a movable platform and a guide rail are provided on the top of the table, the guide rail is installed on the table, and the movable platform is installed on the guide rail; the movable platform is provided with a platform through hole, and the platform through hole is arranged opposite to the table through hole; the grinding disc fixing assembly is installed on the movable platform near the platform through hole.

[0020] It can be seen that by providing a movable platform and a guide rail, and installing the grinding disc fixing assembly on the movable platform, the relative position of the grinding disc and the CCD detector can be easily adjusted.

[0021] In a further solution, a three-dimensional adjustment component is provided at the bottom of the table, and the CCD detector is installed on the three-dimensional adjustment component.

[0022] In a further solution, the three-dimensional adjustment component includes a fixed frame and a three-dimensional adjustment frame. The fixed frame can be removably fixed to the bottom of the table, and the three-dimensional adjustment frame is installed on the fixed frame; the three-dimensional adjustment frame includes an up and down adjustment frame, a left and right adjustment frame and a front and back adjustment frame. The up and down adjustment frame is installed on the left and right adjustment frame, and the left and right adjustment frame is installed on the front and back adjustment frame; a CCD fixing frame is installed on the up and down adjustment frame, and the CCD detector is installed on the CCD fixing frame.

[0023] It can be seen that by setting up a three-dimensional adjustment component to install the CCD detector, the relative position of the CCD detector and the grinding disc can be adjusted in multiple dimensions to observe the alignment situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural diagram of an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0025] Figure 2 It is a structural exploded view of an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0026] Figure 3 This is a structural exploded view of the grinding disc fixing assembly in an embodiment of the polarization-maintaining optical fiber grinding and alignment equipment of the present invention.

[0027] Figure 4 This is a structural diagram of a tray in an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0028] Figure 5 It is a structural cross-sectional view of the grinding disc fixing assembly and the grinding disc in an embodiment of the polarization-maintaining optical fiber grinding and alignment equipment of the present invention.

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0030] Figure 7 This is a structural exploded view of the grinding disc in an embodiment of the polarization-maintaining optical fiber grinding and alignment equipment of the present invention.

[0031] Figure 8 This is a structural exploded view of the clamping plate and side frame in an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0032] Figure 9 It is a structural diagram of the three-dimensional adjustment component in an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0033] Figure 10 This is a structural diagram of a three-dimensional adjustment frame in an embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0034] Figure 11 This is a cat's eye alignment effect diagram of the polarization-maintaining optical fiber in the embodiment of the polarization-maintaining optical fiber polishing and alignment equipment of the present invention.

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0036] like Figure 1 and Figure 2 As shown, the polarization-maintaining optical fiber polishing and alignment device of this embodiment includes a table 1 , a CCD detector 2 , a polishing disk fixing assembly 3 and a polishing disk 4 .

[0037] The table 1 is provided with a table through hole 11 running through the top and the bottom. The CCD detector 2 can be adjusted and installed at the bottom of the table 1 and is arranged opposite to the table through hole 11. In this embodiment, a three-dimensional adjustment component 7 is provided at the bottom of the table 1. The CCD detector 2 is installed on the three-dimensional adjustment component 7. The three-dimensional adjustment component 7 is used to control the movement of the CCD detector 2.

[0038] The grinding disc fixing assembly 3 is installed on the top of the table 1 near the table through hole 11. Figure 3 The grinding disc fixing assembly 3 includes a tray assembly and a glass spacer 31, and the glass spacer 31 is installed on the tray assembly. The tray assembly includes a tray 32 and a tray base 33, see Figure 4 The first end 321 of the tray 32 is provided with a cylindrical groove 324, and the first end of the tray base 33 is provided with a cylindrical boss 331, which is inserted into the groove 324. The tray 32 is provided with a limit portion 322, which is arranged around the outer circumference of the tray 32, and the glass spacer 31 is mounted on the limit portion 322. The second end 323 of the tray 32 is cylindrical, and the center area of ​​the glass spacer 31 is provided with a gasket through hole 311, and the second end 323 of the tray 32 is inserted into the gasket through hole 311.

[0039] See also Figure 5 and Figure 6 The grinding disc 4 is rotatably mounted on the tray assembly. The grinding disc 4 is located above the glass gasket 31. The grinding disc 4 and the glass gasket 3 are arranged parallel and coaxially. A limiting gap 44 is formed between the two opposite sides of the grinding disc 4 and the glass gasket 3.

[0040] See also Figure 7 and Figure 8The grinding disc 4 includes a clamping disc 41, a plurality of side frames 42, and a grinding disc base 43. The grinding disc base 43 is detachably connected to the clamping disc 41. In this embodiment, the clamping disc 41 is provided with four first mounting holes 411, and the four first mounting holes 411 are arranged in a square. The grinding disc base 43 is provided with four second mounting holes 432 corresponding to the first mounting holes 411. The grinding disc base 3 and the clamping disc 1 are fixed by installing bolts (not shown) in the first mounting holes 411 and the second mounting holes 432. A plurality of V-groove groups 413 are evenly arranged around the periphery of the clamping disc 41, and each side frame 4 corresponds to a V-groove group 413 for installation. Both sides of each V-groove group 413 are provided with first side frame fixing holes 414, and each side frame 42 is provided with a corresponding number of second side frame fixing holes 421 as the first side frame fixing holes 414. The side frames 42 are mounted on the clamping disc 41 through the first side frame fixing holes 414 and the second side frame fixing holes 421. The grinding disc base 43 is provided with a plurality of fiber optic through-holes 431, each of which is positioned opposite a V-groove group 413. The number of V-groove groups 413, side frames 42, and V-groove groups 413 can be adjusted as needed. In this embodiment, there are six V-groove groups 413, side frames 42, and V-groove groups 413.

[0041] In addition, by Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 It can be seen that the axial position of the tray 32 is provided with a first axial through hole 324 passing through the tray 32, the axial position of the tray base 33 is provided with a second axial through hole 332 passing through the tray base 33, the axial position of the clamp disk 41 is provided with a third axial through hole 412 passing through the clamp disk 41, and the axial position of the grinding disk base 43 is provided with a fourth axial through hole 433 passing through the grinding disk base 43. The first axial through hole 324, the second axial through hole 332, the third axial through hole 412 and the fourth axial through hole 433 are coaxially arranged, and the first axial through hole 324, the second axial through hole 332, the third axial through hole 412 and the fourth axial through hole 433 cooperate to form a through hole for accommodating the fixing bolt 8.

[0042] Depend on Figure 1 and Figure 2 As can be seen, the top of table 1 is also provided with a movable platform 5 and a guide rail 6. Guide rail 6 is mounted on table 1. The movable platform 5 is mounted on guide rail 6 via a slider 51, allowing the movable platform 5 to move along the guide rail 6. The movable platform 5 is provided with a platform through-hole 52, which is arranged opposite to the table through-hole 11. The grinding disc fixing assembly 3 is mounted on the movable platform 5 near the platform through-hole 52.

[0043] Depend on Figure 1 and Figure 2It can also be seen that the CCD detector 2 is installed on the three-dimensional adjustment component 7. In this embodiment, see Figure 9 The three-dimensional adjustment component 7 includes a fixing frame 71 and a three-dimensional adjustment frame 72. The fixing frame 71 is detachably fixed to the bottom of the table 1, and the three-dimensional adjustment frame 72 is mounted on the fixing frame 71. The three-dimensional adjustment frame 72 can adopt a well-known adjustment frame. In this embodiment, see Figure 10 The three-dimensional adjustment frame 72 includes an up-down adjustment frame 721, a left-right adjustment frame 722, and a front-back adjustment frame 723. The up-down adjustment frame 721 is mounted on the left-right adjustment frame 722, and the left-right adjustment frame 722 is mounted on the front-back adjustment frame 723. A CCD fixing frame 724 is mounted on the up-down adjustment frame 721, and the CCD detector 2 is mounted on the CCD fixing frame 724. The up-down adjustment frame 721 adjusts the CCD fixing frame 724 to move upward or downward, the left-right adjustment frame 722 adjusts the up-down adjustment frame 721 to move leftward or rightward, and the front-back adjustment frame 723 adjusts the front-back adjustment frame 723 to move forward or backward, thereby achieving position adjustment of the CCD detector 2. It should be noted that those skilled in the art should be aware that the installation relationship between the up-down adjustment frame 721, the left-right adjustment frame 722, and the front-back adjustment frame 723 can be interchanged.

[0044] When the polarization-maintaining optical fiber polishing and alignment device of the present invention performs an optical fiber alignment operation, the optical fiber is inserted from top to bottom into the V-groove of the V-groove group 413 of the polishing disk 4, so that the polished surface of the optical fiber contacts the glass gasket 3. The distance between the lens of the CCD detector 2 and the polished surface of the optical fiber on the glass gasket 3 is adjusted to calibrate the cat's eye image of the polished surface of the optical fiber on the display screen. The magnification of the CCD detector 2 is adjustable. In this embodiment, the CCD detector 2 uses a 400X magnification to magnify and display the cat's eye of the polarization-maintaining optical fiber. After a clear cat's eye image is displayed, manually rotate the optical fiber to rotate it in the V-groove, so that the cat's eye direction of the polished surface of the optical fiber reaches the predicted position. In this embodiment, see Figure 11 , adjust the cat's eye on the polished surface of the optical fiber to be parallel to the parallel line of the side frame on the display screen 9. Next, twist the rubber-capped screws (not shown) in the grinding disc 4 that secure the side frame 42, causing them to press against the side frame 42, thereby compressing the optical fiber and confirming the cat's eye orientation, thus completing the optical fiber alignment operation. With the optical fiber in the adjusted cat's eye orientation, the grinding disc 4 can be moved as a whole to the grinding process for polishing.

[0045] As can be seen from the above, the polarization-maintaining optical fiber grinding and alignment equipment of the present invention adopts a CCD detector, which can more easily observe the alignment of the optical fiber, ensure that the line connecting the cat's eye is parallel to the edge line of the grinding disk, and improve the angle alignment accuracy. At the same time, through the combination of the glass gasket set on the tray and the grinding disk, a limiting gap is formed between the two opposite sides of the grinding disk and the glass gasket, so that the glass gasket has a limiting function, ensuring the consistency of the exposed length of the grinding disk after the pigtail is installed, and the glass gasket is transparent, so the microscope can be directly observed through the glass gasket, better ensuring that the line connecting the cat's eye is parallel to the edge line of the grinding disk. In addition, the CCD detector is installed at the bottom of the table and the grinding disk is installed on the top of the table, which can facilitate the installation and adjustment of the optical fiber and save desktop work space.

[0046] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept also fall within the scope of protection of the present invention.

Claims

1. A polarization-maintaining optical fiber polishing and alignment device, characterized by: Includes table, CCD detector, grinding disc fixing assembly and grinding disc; The table is provided with a table through-hole running through the top and bottom, the CCD detector is adjustably mounted on the bottom of the table and arranged opposite to the table through-hole, and the grinding disc fixing assembly is mounted on the top of the table near the table through-hole; The grinding disc fixing assembly includes a tray assembly and a glass spacer, and the glass spacer is mounted on the tray assembly; The grinding disc is rotatably mounted on the tray assembly, the grinding disc is located above the glass spacer, the grinding disc and the glass spacer are arranged parallel and coaxially, and a limiting gap is formed between the two opposite sides of the grinding disc and the glass spacer; The grinding disc includes a fixture disc and a plurality of side frames. A plurality of V-groove groups are evenly arranged on the periphery of the fixture disc, and each of the side frames corresponds to and is installed in conjunction with one of the V-groove groups. The top of the table is further provided with a movable platform and a guide rail, the guide rail is mounted on the table, and the movable platform is mounted on the guide rail; The movable platform is provided with a platform through hole, and the platform through hole is arranged opposite to the table through hole; The grinding disc fixing assembly is installed on the movable platform at a position close to the platform through hole; A three-dimensional adjustment component is provided at the bottom of the table, and the CCD detector is installed on the three-dimensional adjustment component; When performing the optical fiber alignment operation, the optical fiber is inserted from top to bottom into the V-groove of the V-groove group so that the polished surface of the optical fiber contacts the glass gasket. After adjusting the CCD detector to display a clear cat's eye image, the optical fiber is rotated so that the optical fiber rotates within the V-groove, thereby making the cat's eye direction of the polished surface of the optical fiber reach a predetermined position.

2. The polarization-maintaining optical fiber polishing and alignment device according to claim 1, characterized in that: The tray assembly includes a tray and a tray base. The first end of the tray is provided with a cylindrical groove. The first end of the tray base is provided with a cylindrical boss. The boss is inserted into the groove.

3. The polarization-maintaining optical fiber polishing and alignment device according to claim 2, characterized in that: A cylindrical clamping disc groove is provided at the bottom of the clamping disc, and the second end of the tray is cylindrical, and the second end of the tray is inserted into the clamping disc groove.

4. The polarization-maintaining optical fiber polishing and alignment device according to claim 3, characterized in that: The tray is provided with a limiting portion, and the limiting portion is arranged around the outer peripheral wall of the tray; The glass spacer is mounted on the limiting portion.

5. The polarization-maintaining optical fiber polishing and alignment device according to claim 4, characterized in that: The tray is provided with a first axial through hole passing through the tray at an axial center position, the tray base is provided with a second axial through hole passing through the tray base at an axial center position, and the fixture disk is provided with a third axial through hole passing through the fixture disk at an axial center position, and the first axial through hole, the second axial through hole and the third axial through hole are coaxially arranged; The first axial through hole, the second axial through hole and the third axial through hole cooperate to form a through hole for accommodating a fixing bolt.

6. The polarization-maintaining optical fiber polishing and alignment device according to claim 1, characterized in that: The grinding disc further comprises a grinding disc base, and the grinding disc base is detachably connected to the clamping disc; The grinding disc base is provided with a plurality of optical fiber through holes, and each of the optical fiber through holes is respectively arranged opposite to one of the V-groove groups.

7. The polarization-maintaining optical fiber polishing and alignment device according to any one of claims 1 to 6, characterized in that: The three-dimensional adjustment assembly includes a fixing frame and a three-dimensional adjustment frame, the fixing frame is detachably fixed to the bottom of the table, and the three-dimensional adjustment frame is installed on the fixing frame; The three-dimensional adjustment frame includes an up-down adjustment frame, a left-right adjustment frame, and a front-back adjustment frame, wherein the up-down adjustment frame is mounted on the left-right adjustment frame, and the left-right adjustment frame is mounted on the front-back adjustment frame; A CCD fixing frame is installed on the upper and lower adjustment frames, and the CCD detector is installed on the CCD fixing frame.

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