Polarization maintaining optical fiber alignment tool and polarization maintaining optical fiber assembly equipment

Abstract

The utility model discloses a polarization maintaining optical fiber alignment tool and polarization maintaining optical fiber assembling equipment, the polarization maintaining optical fiber alignment tool comprises a rotating rod, the rotating rod comprises a rod body, a hand-held block and a fixed block, the rod body extends along a first direction, the side wall of the rod body is provided with a positioning groove, the positioning groove extends along the first direction and penetrates through two end surfaces of the rod body along the first direction, and the hand-held block and the fixed block are arranged on the rotating rod; the handheld block is arranged on the periphery of the rod body and located at one end of the rod body in the first direction, the fixing blocks are connected to the two ends of the rod body in the first direction, and the fixing blocks are used for fixing the polarization maintaining optical fibers placed in the positioning grooves. The placing seat is provided with a rotating groove extending in the first direction, the rotating groove is opened upwards, the rotating groove penetrates through the two end faces, in the first direction, of the placing seat, and the rod body is arranged in the rotating groove and rotationally connected with the groove wall of the rotating groove; and the fixing plate is movably connected with the placing seat. The optical fiber rotating device can assist an operator in rotating an optical fiber, and the yield of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polarization maintaining optical fiber production technical field especially polarization maintaining optical fiber alignment tool and polarization maintaining optical fiber equipment. BACKGROUND

[0002] Polarization maintaining optical fiber is a kind of special optical fiber, compared with ordinary optical fiber, polarization maintaining optical fiber can effectively prevent the polarization state of light signal from changing, and has wide application in optical communication, laser, optical sensing and other fields.Currently, the existing polarization maintaining optical fiber alignment process is as follows: manually holding a single optical fiber and rotating, and then aligning through a charge coupled device (CCD), and then fixing through paraffin wax, and sequentially completing the rotation alignment of each optical fiber.However, in the actual operation process, it is difficult to hold and rotate the optical fiber due to its small diameter, and it is difficult to adjust to the required value, and the optical fiber is easily damaged by manual rotation, resulting in product scrap. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides polarization maintaining optical fiber alignment tool and polarization maintaining optical fiber equipment.

[0004] The solution of the technical problem of the utility model is as follows:

[0005] In the first aspect, a polarization maintaining optical fiber alignment tool is provided, comprising:

[0006] A rotating rod includes a rod body, a hand-held block and a fixed block, the rod body is arranged to extend along a first direction, a positioning groove is provided on the side wall of the rod body, the positioning groove is arranged to extend along the first direction and penetrate through the two end faces of the rod body along the first direction, the hand-held block is arranged on the outer periphery of the rod body and located at one end of the rod body along the first direction, the fixed block is connected to the two ends of the rod body along the first direction, the fixed block is used to fix the polarization maintaining optical fiber placed in the positioning groove, and the first direction is perpendicular to the up-down direction;

[0007] A placing seat is provided with a rotating groove extending along the first direction, the rotating groove is arranged to open upward, the rotating groove penetrates through the two end faces of the placing seat along the first direction, and the rod body is arranged in the rotating groove and rotationally connected with the groove wall of the rotating groove;

[0008] A fixed plate is movably connected with the placing seat to open or close the upwardly opened slot of the rotating groove.

[0009] The utility model discloses at least has the following beneficial effects: when adjusting polarization maintaining optical fiber angle, first, polarization maintaining optical fiber is placed into the positioning groove of rotating rod, and the two fixed blocks of rotating rod are connected with optical fiber using paraffin, and the rotation of polarization maintaining optical fiber can be realized by holding handheld block and rotating rotating rod, because the diameter of handheld block is greater than polarization maintaining optical fiber, the holding and rotation of operator are favorable, the difficulty of rotating polarization maintaining optical fiber can be greatly reduced, and because the rod body provides protection for polarization maintaining optical fiber, the damage of polarization maintaining optical fiber can be avoided, and the yield of product is improved. In addition, the placement seat can provide support for the rotating rod, when the rotating rod is placed into the rotating groove, the slot of the rotating groove can be closed by the fixed plate, and the rotating rod can be placed stably under the joint action of the placement seat and the fixed plate, which is more favorable for subsequent monitoring of the angle of polarization maintaining optical fiber by CCD, and further improves the yield of product.

[0010] As a further improvement of the above technical solution, the outer periphery of the rod body is provided with a limiting block, the placement seat is provided with a limiting groove, the limiting groove is located at both ends of the rotating groove along the first direction, the limiting groove is matched with the limiting block, and the limiting block is rotationally connected with the groove wall of the limiting groove.

[0011] As a further improvement of the above technical solution, the polarization maintaining optical fiber alignment tool further comprises a locking bolt, the locking bolt is arranged in the fixed plate along the up-down direction and is threadedly connected with the fixed plate, and the lower end surface of the locking bolt abuts against the rod body located in the rotating groove.

[0012] As a further improvement of the above technical solution, one end of the placement seat along the second direction is provided with a locking piece, the locking piece is detachably connected with the side wall of the fixed plate, the other end of the placement seat along the second direction is hingedly connected with the fixed plate, and the second direction is perpendicular to the first direction and the up-down direction.

[0013] As a further improvement of the above technical solution, the placement seat, the fixed plate and the rotating rod jointly constitute an alignment structure, the polarization maintaining optical fiber alignment tool is provided with multiple layers of the alignment structure, the multiple layers of the alignment structure are arranged along the up-down direction, and in the two adjacent layers of the alignment structure, the placement seat of the alignment structure located in the upper layer is connected with the fixed plate of the alignment structure located in the lower layer.

[0014] As a further improvement of the above technical solution, in each layer of the alignment structure, the placement seat is provided with multiple rotating grooves, the rotating grooves located on the same placement seat are arranged along the second direction, the rotating rod is provided in one-to-one correspondence with the rotating grooves, and the second direction is perpendicular to the first direction and the up-down direction.

[0015] As a further improvement of the above technical solution, the polarization maintaining optical fiber alignment tool further comprises:

[0016] The first adjusting structure comprises a first sliding block, a first adjusting block and a first adjusting screw, the first adjusting block is provided with a first sliding groove and a first locking groove, the first sliding groove is arranged on the upper wall surface of the first adjusting block, the first sliding groove and the first locking groove are arranged in communication with each other along the second direction, the first sliding block is slidingly connected in the first sliding groove and connected with the placing seat, the first adjusting screw passes through the first locking groove and is threadedly connected with the first sliding block, the head of the first adjusting screw abuts against the side wall of the first adjusting block, and the second direction is perpendicular to the first direction and the up-down direction.

[0017] As a further improvement of the above technical solution, the polarization maintaining optical fiber alignment tool further comprises:

[0018] The second adjusting structure comprises a second sliding block, a second adjusting block and a second adjusting screw, the second adjusting block is provided with a second sliding groove and a second locking groove, the second sliding groove and the second locking groove are arranged in communication with each other along the up-down direction, the second sliding block is connected with the first adjusting block and slidingly connected in the second sliding groove, the second adjusting screw passes through the second locking groove and is threadedly connected with the second sliding block, and the head of the second adjusting screw abuts against the side wall of the second adjusting block.

[0019] As a further improvement of the above technical solution, the polarization maintaining optical fiber alignment tool further comprises:

[0020] The third adjusting structure comprises a base, a third sliding block and a third adjusting screw, the base is provided with a third sliding groove and a third locking groove, the third sliding groove and the third locking groove are arranged in communication with each other along the first direction, the third sliding block is slidingly connected in the third sliding groove, the third adjusting screw passes through the second adjusting block and the third locking groove in sequence and is threadedly connected with the third sliding block, and the head of the third adjusting screw abuts against the second adjusting block.

[0021] In the second aspect, a polarization maintaining optical fiber assembly device is provided, which comprises the polarization maintaining optical fiber alignment tool according to any one of the above technical solutions. Due to the arrangement of the polarization maintaining optical fiber alignment tool, the operator can assist in rotating the polarization maintaining relationship, solve the problem of difficult holding caused by the small diameter of the polarization maintaining optical fiber, protect the polarization maintaining optical fiber from being damaged during assembly, and improve the yield of the assembled product. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly described. Obviously, the described drawings are only a part of the embodiments of the present application, not all embodiments, and the person skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0023] Figure 1 It is the overall structure schematic diagram of the polarization maintaining optical fiber alignment tool of the embodiment of the present application.

[0024] Figure 2 It is the structure schematic diagram of the alignment structure of the embodiment of the present application.

[0025] Figure 3 It is the structure schematic diagram of the alignment structure in another state of the embodiment of the present application.

[0026] Figure 4 It is the structure schematic diagram of the rotating rod of the embodiment of the present application.

[0027] Figure 5 It is the use schematic diagram of the rotating rod of the embodiment of the present application.

[0028] Figure 6 It is the structure schematic diagram of the placing seat of the embodiment of the present application.

[0029] Figure 7 It is the structure schematic diagram of the adjusting structure of the embodiment of the present application.

[0030] Figure 8 It is the top view of the adjusting structure of the embodiment of the present application.

[0031] Figure 9 It is Figure 8 The sectional view in A-A direction.

[0032] Figure 10 It is the overall structure schematic diagram of the polarization maintaining optical fiber assembling equipment of the embodiment of the present application.

[0033] 100, rotating rod; 110, rod body; 111, positioning groove; 120, fixed block; 130, hand-held block; 140, limiting block; 200, placing seat; 210, locking bolt; 220, rotating groove; 230, limiting groove; 300, fixed plate; 310, locking bolt; 320, locking block; 400, first adjusting structure; 410, first sliding block; 420, first adjusting block; 421, first sliding groove; 422, first locking groove; 430, first adjusting bolt; 500, second adjusting structure; 510, second sliding block; 520, second adjusting block; 521, second locking groove; 530, second adjusting bolt; 600, third adjusting structure; 610, base; 611, third locking groove; 612, third sliding groove; 620, third sliding block; 630, third adjusting bolt; 700, CCD; 800, fiber arranging assembly jig; 900, support. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0035] In the description of the present application, if the orientation description such as up, down, front, back, left, right, etc. is described, the orientation or positional relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used to distinguish the technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical solution.

[0038] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor, all belong to the protection scope of the present application. The various technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0039] In theory, optical fibers do not produce birefringence, and the polarization state of the optical fiber does not change during propagation. However, in practice, ordinary optical fibers will be affected by external forces during production, such as uneven thickness or bending of the optical fiber, which will cause birefringence. When the optical fiber is affected by any external interference factors such as wavelength, bending degree, temperature, etc., the polarization state of the light will become chaotic when transmitted in ordinary optical fibers. The application of polarization maintaining optical fiber can solve this problem of polarization state change. By designing the geometric size of the optical fiber, a stronger birefringence is generated to eliminate the influence of stress on the polarization state of the incident light.

[0040] Common polarization maintaining optical fibers are realized by adding two stress rods with improved glass components on both sides of the core. The stress type polarization maintaining optical fiber mainly relies on the difference in thermal expansion coefficient between the embedded stress rod and the core to produce thermal stress, which causes the change of the refractive index of the material, thereby producing birefringence effect.

[0041] Polarization maintaining optical fiber works by causing a difference in light speed in the two perpendicular polarizations that pass through the optical fiber. This birefringence produces two main transmission axes within the optical fiber, which are called the fast axis and the slow axis of the optical fiber. Among them, the fast axis is the direction with small refractive index, and the light transmission speed is fast, which is perpendicular to the midpoint of the center line of the two stress rods; the slow axis is a light axis passing through the center of the two stress rods, which is the direction with large refractive index, and the light transmission speed is slow.

[0042] The polarization maintaining optical fiber array (Fiber Array, FA) is a key component in optical communication, which uses a substrate with V-shaped grooves (V-grooves) to install a bundle of polarization maintaining optical fibers on the substrate according to a specified interval and form an array. When producing the polarization maintaining optical fiber array, polarization maintaining optical fiber alignment is needed, the optical fiber is rotated and the slow axis or fast axis of the optical fiber is calibrated to minimize the angle error. In the present embodiment, the angle error should be kept within the range of 0±3°.

[0043] The existing polarization maintaining optical fiber alignment process is as follows: a single optical fiber is manually rotated by hand, and then aligned by CCD, and then fixed by paraffin, and the alignment of each channel is completed in turn. However, in the actual operation process, since the diameter of the optical fiber is small, for example, the diameter of the polarization maintaining optical fiber is 0.25mm, it is difficult to rotate by hand, it is difficult to adjust to the required value, the manual operation efficiency is low, and the rotating force is difficult to control, which can easily damage the optical fiber and cause product scrap.

[0044] The utility model discloses a polarization maintaining optical fiber alignment tool which can assist an operator to rotate the optical fiber, solve the problem of rotation difficulty caused by the small diameter of the optical fiber, protect the optical fiber, reduce the damage of the optical fiber and improve the yield of products.

[0045] For the convenience of description, the front-rear direction is taken as the first direction, the left-right direction is taken as the second direction, and the first direction and the second direction are perpendicular to each other and perpendicular to the up-down direction.

[0046] In the embodiment, with reference to Figure 1 、 Figure 2 and Figure 3 , the polarization maintaining optical fiber alignment tool comprises rotating rods 100, a placing seat 200 and a fixing plate 300. With reference to Figure 4 and Figure 5 , the rotating rod 100 comprises a rod body 110, a hand-held block 130 and a fixing block 120. The rod body 110 extends along the front-rear direction, and the side wall surface of the rod body 110 is provided with a positioning groove 111 which extends along the front-rear direction and penetrates through the front and rear end surfaces of the rod body 110. The hand-held block 130 is arranged on the outer periphery of the rod body 110 and located at the front end or the rear end of the rod body 110. Two fixing blocks 120 are arranged on each rotating rod 100, and the two fixing blocks 120 are arranged at the front and rear ends of the rod body 110 and connected with the front end surface or the rear end surface of the rod body 110.

[0047] With reference to Figure 6 , the placing seat 200 is provided with a rotating groove 220 which is used for supporting the rotating rod 100 and allowing the rotating rod 100 to be stably placed. The rotating groove 220 extends along the front-rear direction, and its slot opening is arranged to face upward. The rotating groove 220 penetrates through the front and rear end surfaces of the placing seat 200, and the rod body 110 can be arranged in the rotating groove 220 and connected with the groove wall of the rotating groove 220 in a rotatable manner.

[0048] The fixing plate 300 is movably connected with the placing seat 200 and can open or close the slot opening of the rotating groove 220. When the slot opening of the rotating groove 220 is opened, the operator can conveniently place the rotating rod 100 into the rotating groove 220; and when the slot opening of the rotating groove 220 is closed, the rotating rod 100 can be prevented from jumping out of the slot opening of the rotating groove 220 during the adjustment of the polarization maintaining optical fiber.

[0049] In the embodiment, the positioning groove 111 is a V-shaped groove for placing the polarization maintaining optical fiber, the fixing block 120 has a fixing surface for receiving the polarization maintaining optical fiber extending from the front and back ends of the positioning groove 111, and the operator can use paraffin wax to fix the polarization maintaining optical fiber on the fixing surface. In the subsequent operation process, the operator can rotate the polarization maintaining optical fiber by holding the hand-held block 130 and rotating the rotating rod 100. Since the diameter of the hand-held block 130 is larger than that of the polarization maintaining optical fiber, the operator can hold and rotate the polarization maintaining optical fiber more easily, and the difficulty of rotating the polarization maintaining optical fiber can be greatly reduced. Moreover, since the rod body 110 protects the polarization maintaining optical fiber, the polarization maintaining optical fiber can be prevented from being damaged, and the yield of the product can be improved.

[0050] In some embodiments, the outer periphery of the rod body 110 is provided with a limiting block 140, the placement seat 200 is provided with a limiting groove 230 located at the front and back ends of the rotating groove 220, and the limiting groove 230 and the limiting block 140 are matched with each other. When the rod body 110 is placed in the rotating groove 220, the limiting block 140 is located in the limiting groove 230. Since the diameter of the limiting block 140 is larger than that of the rod body 110, the limiting block 140 and the groove wall of the limiting groove 230 are limited with each other, which can prevent the rotating rod 100 from moving in the front and back directions, further ensure the accuracy of the polarization maintaining optical fiber alignment, and further improve the yield of the product.

[0051] In some embodiments, the polarization maintaining optical fiber alignment tool further comprises a locking bolt 310 extending in the up and down directions, the locking bolt 310 is provided through the fixing plate 300 and connected with the fixing plate 300 through threads, and the lower end surface of the locking bolt 310 abuts against the rod body 110 located in the rotating groove 220.

[0052] It can be understood that when the operator rotates the rotating rod 100 with the polarization maintaining optical fiber placed therein to the required angle, the lower end surface of the locking bolt 310 can be abutted against the rod body 110 of the rotating rod 100 by rotating the locking bolt 310, so as to lock the angle of the rotating rod 100, avoid the rotation of the rotating rod 100 which has been adjusted in the subsequent operation process, and affect the angle of the polarization maintaining optical fiber, and further improve the yield of the product.

[0053] In some embodiments, one end of the placement seat 200 along the left and right directions is provided with a locking piece, the locking piece is detachably connected with the side wall surface of the fixing plate 300, the other end of the placement seat 200 along the left and right directions is hingedly connected with the fixing plate 300, and the fixing plate 300 can be upwardly opened around the hinge joint with the placement seat 200 to realize the opening of the rotating groove 220. When the locking piece is connected with the side wall surface of the fixing plate 300, the fixing plate 300 and the placement seat 200 are locked with each other, and the fixing plate 300 cannot be automatically opened.

[0054] It can be understood that the locking member can be a screw, a buckle, etc. In the embodiment, the locking bolt 210 is used as the locking member, and the fixing plate 300 is provided with a downwardly extending locking block 320 extending to the side surface of the placement seat 200. The locking block 320 is provided with a downwardly opening socket, the locking bolt 210 is arranged in the socket and is threadedly connected with the side surface of the placement seat 200. The locking bolt 210 is rotated until the head of the locking bolt 210 abuts against the side wall of the locking block 320 to lock the locking block 320.

[0055] In some embodiments, the head of the locking bolt 210 is provided with an anti-skid groove, which can increase the friction between the head surface of the locking bolt 210 and the hand of the operator, so as to facilitate the operator to hold the head of the locking bolt 210 to rotate the locking bolt 210.

[0056] In some embodiments, the polarization maintaining optical fiber alignment tool is provided with a plurality of layers of alignment structures, each layer of alignment structure comprising a placement seat 200, a fixing plate 300 and a rotating rod 100. The plurality of layers of alignment structures are arranged in the up-down direction. In the two adjacent layers of alignment structures, the placement seat 200 of the alignment structure in the upper layer is connected with the fixing plate 300 of the alignment structure in the lower layer.

[0057] It can be understood that the arrangement of the alignment structure in layers is more conducive to the adjustment and alignment of the array of the plurality of layers of polarization maintaining optical fibers.

[0058] In the embodiment, in the two adjacent layers of alignment structures, the placement seat 200 of the alignment structure in the upper layer is detachably connected with the fixing plate 300 of the alignment structure in the lower layer by a screw, that is, the two layers of alignment structures can be separated from each other.

[0059] In some embodiments, the polarization maintaining optical fiber alignment tool is provided with a locking bolt 310. In the case of arranging a plurality of layers of alignment structures, the bolt hole corresponding to the locking bolt 310 of the alignment structure in the lower layer is arranged to penetrate the fixing plate 300 and the placement seat 200 of the alignment structure in the upper layer. Without disassembling the alignment structure in the upper layer, the locking of the locking bolt 310 in the lower layer can be achieved by using a tool.

[0060] For example, in the embodiment, the alignment structure is provided with two layers. The bolt hole corresponding to the locking bolt 310 of the alignment structure in the lower layer penetrates the placement seat 200 and the fixing plate 300 of the alignment structure in the upper layer. Moreover, the rotating grooves 220 arranged on the placement seats 200 of the alignment structures in the upper and lower layers are arranged staggered. The locking bolt 310 installed in the lower layer can be directly inserted into the fixing plate 300 in the lower layer through the bolt hole penetrating the fixing plate 300 and the placement seat 200 of the alignment structure in the upper layer, and abuts against the rotating rod 100 of the alignment structure in the lower layer to lock the rotating rod 100 of the alignment structure in the lower layer.

[0061] In the embodiment, the head of the locking bolt 310 is provided with an internal hexagonal hole, and the rotation of the locking bolt 310 can be realized by using a hexagonal wrench, so as to realize the locking of the rotating rod 100.

[0062] In some embodiments, the placing seat 200 in each layer of the alignment structure is respectively provided with a plurality of rotating grooves 220, the rotating grooves 220 on the same placing seat 200 are arranged along the left-right direction, and the rotating rod 100 is arranged in one-to-one correspondence with the rotating grooves 220. In this way, the alignment and production and processing of the polarization maintaining fiber array are more conducive.

[0063] In some embodiments, the polarization maintaining fiber alignment tool further comprises an adjusting structure, which can adjust the position of the alignment structure along the front-rear direction, the left-right direction and the up-down direction, as described in Figure 7 , Figure 8 and Figure 9 .

[0064] In the embodiment, the adjusting structure comprises a first adjusting structure 400, which is used to adjust the position of the alignment structure along the left-right direction, so that the alignment structure is consistent with the center line of other jigs as much as possible. The first adjusting structure 400 comprises a first sliding block 410, a first adjusting block 420 and a first adjusting bolt 430. The first adjusting block 420 is provided with a first sliding groove 421 and a first locking groove 422. The first sliding groove 421 is arranged on the upper wall surface of the first adjusting block 420. The first sliding groove 421 and the first locking groove 422 are respectively arranged along the left-right direction and are arranged in communication with each other. In the embodiment, the first adjusting groove is arranged on the front wall surface of the first adjusting block 420. The first sliding block 410 is slidingly connected in the first sliding groove 421 and is connected with the placing seat 200. The first adjusting bolt 430 passes through the first locking groove 422 and is connected with the first sliding block 410 through threads. The head of the first adjusting bolt 430 abuts against the front side wall of the first adjusting block 420.

[0065] It can be understood that after the first sliding block 410 is moved to the appropriate position of the first sliding groove 421 and the alignment structure is consistent with the center line of other jigs, the first adjusting bolt 430 is rotated, and the position between the first adjusting block 420 and the first sliding block 410 can be locked through the abutting action of the first adjusting bolt 430 and the first adjusting block 420.

[0066] In the embodiment, the front side of the polarization maintaining optical fiber alignment tool is provided with the support 900 for supporting the product joint, and the rear side of the polarization maintaining optical fiber alignment tool is provided with the fiber arranging assembly jig 800 for arranging the fibers, and the substrate and the polarization maintaining optical fibers of the FA are bonded in the fiber arranging assembly jig 800. The left and right positions of the alignment structure are adjusted by the first adjusting structure 400, so that the alignment structure is consistent with the center line of the fiber arranging assembly jig 800 and the center line of the support 900 as much as possible, which is more conducive to the assembly of the product.

[0067] In some embodiments, the adjusting structure further comprises a second adjusting structure 500 for adjusting the height of the alignment structure to adapt to the height of the support 900 and the fiber arranging assembly jig 800.

[0068] The second adjusting structure 500 comprises a second sliding block 510, a second adjusting block 520 and a second adjusting bolt 530. The second adjusting block 520 is provided with a second sliding groove and a second locking groove 521, which are respectively arranged in the up-down direction and are in communication with each other. In the embodiment, the alignment structure is arranged on the left side of the second adjusting block 520, the second sliding groove is arranged on the left side wall of the second adjusting block 520, and the second locking groove 521 is arranged on the right side wall of the second adjusting block 520. The second sliding block 510 is connected with the first adjusting block 420 and inserted into the second locking groove 521, and the second sliding block 510 can slide along the extension direction of the second locking groove 521 to adjust the height of the first adjusting block 420, thereby adjusting the height of the alignment structure. The second adjusting bolt 530 passes through the second locking groove 521 and is threadedly connected with the second sliding block 510. The second adjusting bolt 530 is arranged in the left-right direction, and the head thereof is arranged at the right end. The left side wall of the head of the second adjusting bolt 530 abuts against the right side wall of the second adjusting block 520.

[0069] After the second sliding block 510 is moved to the appropriate position of the second sliding groove and the height of the alignment structure matches that of other jigs, the second adjusting bolt 530 is rotated, and the abutment of the second adjusting bolt 530 and the second adjusting block 520 can realize the position locking between the second adjusting block 520 and the second sliding block 510.

[0070] In some embodiments, the adjusting structure further comprises a third adjusting structure 600 for adjusting the position of the alignment structure in the front-rear direction to adapt to the front-rear position of other jigs. The third adjusting structure 600 comprises a base 610, a third sliding block 620, and a third adjusting screw 630. The base 610 is provided with a third sliding groove 612 and a third locking groove 611, which extend in the front-rear direction and communicate with each other. In this embodiment, the third sliding groove 612 is open downward, and the third locking groove 611 is open upward. The third sliding block 620 is slidingly connected in the third sliding groove 612. The third adjusting screw 630 passes through the second adjusting block 520 and the third locking groove 611 from top to bottom and is threadedly connected with the third sliding block 620. The head of the third adjusting screw 630 abuts against the second adjusting block 520.

[0071] After the second adjusting block 520 is moved to the appropriate position, the third adjusting screw 630 is rotated. Through the abutting action of the head lower wall surface of the third adjusting screw 630 against the second adjusting block 520, the head of the third adjusting screw 630 and the third sliding block 620 can provide clamping force for the second adjusting block 520 and the base 610, so as to realize the position locking between the second adjusting block 520 and the base 610.

[0072] In a second aspect, referring to Figure 10 The polarization maintaining optical fiber assembling equipment disclosed in the embodiments of the utility model can assist the operator in rotating the polarization maintaining relationship, solve the problem of difficult holding caused by the small diameter of the polarization maintaining optical fiber, protect the polarization maintaining optical fiber from being damaged during the assembling process, and improve the yield of the assembled product.

[0073] In this embodiment, the polarization maintaining optical fiber assembling equipment further comprises a bracket 900 for placing a product joint, a fiber arranging and assembling jig 800 for bonding the FA substrate and the polarization maintaining optical fiber, a CCD 700, and a mounting plate. The mounting plate is provided with a plurality of mounting holes. The bracket 900, the fiber arranging and assembling jig 800, the CCD 700, and the polarization maintaining optical fiber alignment tool are fixed on the mounting plate through screws and the mounting holes, and the positions of the components can be flexibly adjusted.

[0074] After the polarization maintaining optical fiber assembly equipment is installed, the polarization maintaining optical fibers are orderly arranged and fixed on the rotating rod 100 by using paraffin, an operator holds the rotating rod 100 and rotates the rotating rod 100 to realize rotation of the polarization maintaining optical fibers, the rotation angle of the polarization maintaining optical fibers is precisely controlled, and whether the polarization maintaining optical fibers meet the angle requirement is determined by the CCD 700, after each polarization maintaining optical fiber is rotated to the required angle, the polarization maintaining optical fibers are fixed with the FA substrate by using glue, the assembly of the polarization maintaining optical fiber array product is realized, and the product yield is high.

[0075] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. The equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A polarization-maintaining fiber alignment fixture, characterized in that, include: A rotating rod includes a rod body, a handheld block, and a fixing block. The rod body extends along a first direction, and a positioning groove is provided on the side wall of the rod body. The positioning groove extends along the first direction and passes through both ends of the rod body along the first direction. The handheld block is located on the outer periphery of the rod body and at one end of the rod body along the first direction. The fixing block is connected to both ends of the rod body along the first direction. The fixing block is used to fix the polarization-maintaining optical fiber placed in the positioning groove. The first direction is perpendicular to the up and down direction. The placement base is provided with a rotating groove extending along a first direction. The rotating groove is open upward and passes through both ends of the placement base along the first direction. The rod is disposed in the rotating groove and is rotatably connected to the groove wall. A fixing plate is movably connected to the placement seat to open or close the upward-opening slot of the rotating groove.

2. The polarization-maintaining fiber alignment fixture according to claim 1, characterized in that, The rod body is provided with a limiting block on its outer periphery, and the placement seat is provided with a limiting groove. The limiting groove is located at both ends of the rotating groove along the first direction. The limiting groove matches the limiting block, and the limiting block is rotatably connected to the groove wall of the limiting groove.

3. The polarization-maintaining fiber alignment fixture according to claim 1, characterized in that, The polarization-maintaining fiber alignment fixture also includes a locking bolt, which passes through the fixing plate in the vertical direction and is threadedly connected to the fixing plate. The lower end face of the locking bolt abuts against the rod located in the rotating groove.

4. The polarization-maintaining fiber alignment fixture according to claim 1, characterized in that, The placement seat is provided with a locking member at one end along the second direction, and the locking member is detachably connected to the side wall of the fixing plate. The other end of the placement seat along the second direction is hinged to the fixing plate. The second direction is perpendicular to the first direction and the up and down direction.

5. The polarization-maintaining fiber alignment fixture according to claim 1, characterized in that, The placement seat, the fixing plate, and the rotating rod together form an alignment structure. The polarization-maintaining fiber alignment fixture has multiple layers of the alignment structure, which are arranged in a vertical direction. In two adjacent alignment structures, the placement seat of the upper alignment structure is connected to the fixing plate of the lower alignment structure.

6. The polarization-maintaining fiber alignment fixture according to claim 5, characterized in that, In each layer of the alignment structure, the placement seat is provided with multiple rotating slots. The rotating slots located on the same placement seat are arranged along the second direction. The rotating rod is provided in a one-to-one correspondence with the rotating slot. The second direction is perpendicular to the first direction and the up-down direction.

7. The polarization-maintaining fiber alignment fixture according to claim 1, characterized in that, The polarization-maintaining fiber alignment fixture also includes: The first adjustment structure includes a first slider, a first adjustment block, and a first adjustment bolt. The first adjustment block is provided with a first sliding groove and a first locking groove. The first sliding groove is provided on the upper wall surface of the first adjustment block. The first sliding groove and the first locking groove extend along a second direction and are interconnected. The first slider is slidably connected in the first sliding groove and connected to the placement seat. The first adjustment bolt passes through the first locking groove and is threadedly connected to the first slider. The head of the first adjustment bolt abuts against the side wall of the first adjustment block. The second direction is perpendicular to the first direction and the up and down direction.

8. The polarization-maintaining fiber alignment fixture according to claim 7, characterized in that, The polarization-maintaining fiber alignment fixture also includes: The second adjustment structure includes a second slider, a second adjustment block, and a second adjustment bolt. The second adjustment block is provided with a second sliding groove and a second locking groove. The second sliding groove and the second locking groove extend in the vertical direction and are connected to each other. The second slider is connected to the first adjustment block and is slidably connected in the second sliding groove. The second adjustment bolt passes through the second locking groove and is threadedly connected to the second slider. The head of the second adjustment bolt abuts against the side wall of the second adjustment block.

9. The polarization-maintaining fiber alignment fixture according to claim 8, characterized in that, The polarization-maintaining fiber alignment fixture also includes: The third adjustment structure includes a base, a third slider, and a third adjustment bolt. The base is provided with a third sliding groove and a third locking groove. The third sliding groove and the third locking groove extend along a first direction and are interconnected. The third slider is slidably connected in the third sliding groove. The third adjustment bolt passes through the second adjustment block and the third locking groove in sequence and is threadedly connected to the third slider. The head of the third adjustment bolt abuts against the second adjustment block.

10. A polarization-maintaining fiber assembly device, characterized in that, Includes the polarization-maintaining fiber alignment fixture as described in any one of claims 1 to 9.

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