CN218937733U

CN218937733U - Optical fiber bending loss detection device

Info

Publication number: CN218937733U
Application number: CN202320092392.3U
Authority: CN
Inventors: 祖先锋; 绳旺; 郝明
Original assignee: Air Force Engineering University of PLA Aircraft Maintenace Management Sergeant School
Current assignee: Air Force Engineering University of PLA Aircraft Maintenace Management Sergeant School
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-28
Anticipated expiration: 2033-01-31

Abstract

The utility model provides an optical fiber bending loss detection device, which solves the problem that the prior art cannot bend and detect optical fibers at multiple positions at the same time. Including detecting the base, it has the regulation spout to detect the top surface middle part of base and open along its length direction, it has a plurality of detection spouts respectively with the regulation spout intercommunication to detect the top surface of base, the middle part fixed mounting who adjusts the spout has the center piece, the top of center piece rotates and installs the center line loop, adjust sliding mounting in the spout and have a plurality of detection sliders, the detection line loop is all installed at the top of every detection slider, equal fixed mounting has two angle plates that are located the detection line loop front and back both sides respectively on the top surface of every detection slider, the middle part fixed mounting who detects the left and right sides face of base has clamping device, fixedly connected with passes the pending of a plurality of detection line loops and center line loop between two clamping device and examine optic fibre. The utility model can simulate the bending state of a plurality of positions possibly occurring during the installation of the optical fiber, thereby accurately detecting the optical fiber.

Description

Optical fiber bending loss detection device

Technical Field

The utility model relates to the technical field of optical fiber detection, in particular to an optical fiber bending loss detection device.

Background

Bending of an optical fiber causes bending loss of the optical fiber, particularly when the radius of curvature is relatively large after the optical fiber is bent, and when the radius of curvature is comparable to the diameter of a fiber core, transmission characteristics of the optical fiber change, a large number of conduction modes are converted into radiation modes, transmission is not continued, and the radiation modes enter a cladding and are absorbed by the cladding, so that additional loss of the optical fiber is caused. The macrobend loss of an optical fiber is an additional loss caused when the radius of curvature of the optical fiber after bending is larger than the diameter of the optical fiber.

Therefore, macrobending loss test is an important link in the optical fiber manufacturing process, and the conventional optical fiber bending loss test method is to wind the optical fiber on a columnar test wheel shaft, and detect macrobending loss of the optical fiber by comparing the change of optical characteristics when the optical fiber is in a bending state with an unbent state, however, because when the optical fiber is actually installed and routed, one optical fiber has multiple bending possibilities, and the method for winding the optical fiber on the wheel shaft one by one in a circle is not capable of well simulating the bending state when the optical fiber is actually routed.

At present, the publication number is as follows: CN209512747U discloses a device for detecting curvature of an electric optical fiber, which can fix two ends of the optical fiber, then slide in a rack plate through a supporting block to drive the middle part of the optical fiber to bend, and irradiate the optical fiber with a red light pen to detect the curvature of the optical fiber, however, the structure can detect the curvature of the optical fiber, but still can only bend a certain part of a single optical fiber, and when a wire is actually installed, the possibility of bending a plurality of parts of the optical fiber exists, and the optical fiber cannot be bent and detected at a plurality of parts.

Based on the above problems, the present utility model provides an optical fiber bending loss detection device to solve the problems.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the optical fiber bending loss detection device, which effectively solves the problems that the prior art can only carry out bending detection on a certain part of a single optical fiber and can not simultaneously carry out bending and detection on a plurality of parts of the optical fiber.

The utility model provides an optical fiber bending loss detection device, includes the detection base, it has the regulation spout to open along its length direction to detect the top surface middle part of base, it has a plurality of detection spouts that are located respectively and adjust both sides and all communicate with the regulation spout to detect the top surface of base, the middle part fixed mounting who adjusts the spout has the center piece, the top of center piece rotates installs the center wire loop, slidable mounting has a plurality of detection sliders in the regulation spout, every detect the top of slider and all install the detection wire loop, every equal fixed mounting has two angle plates that are located respectively in the front and back both sides of detection wire loop on the top surface of detection slider, the equal fixed mounting in middle part of the left and right sides face of detection base has clamping device, two fixedly connected with is passed a plurality of detection wire loops and the waiting of center wire loop in proper order between the clamping device and is examined optic fibre.

Preferably, the bottom surfaces of the adjusting chute and the detecting chutes are fixedly provided with magnet sheets, and the bottom of each detecting slide block is fixedly provided with a magnet block.

Preferably, the bottom surfaces of the adjusting chute and the detecting chutes are provided with a plurality of positioning holes penetrating through the magnet sheet, each detecting slide block is hollow, a positioning pin matched with the positioning holes is penetrated and installed between the top surface of the detecting slide block and the bottom surface of the magnet block in a sliding manner, and a reset spring is fixedly sleeved on the outer side of a part of the positioning pin positioned inside the detecting slide block.

Preferably, the clamping device comprises clamping seats fixedly mounted on the left side surface and the right side surface of the detection base, clamping rods are respectively and slidably mounted between the top surfaces and the bottom surfaces of the front end and the rear end of each clamping seat, clamping plates are fixedly mounted at one ends of the clamping rods above the clamping seats, and clamping springs are fixedly connected between the bottom ends of the clamping rods and the bottom surfaces of the clamping seats.

Preferably, the top surface of the clamping seat and the bottom surface of the clamping plate are both provided with anti-slip pads.

According to the utility model, the two ends of the optical fiber can be fixed through the two clamping devices, the optical fiber passes through the plurality of detection wire loops, the detection sliding blocks are moved in the plurality of detection sliding grooves, so that the optical fiber is bent at a plurality of positions, the angle of each bent position can be reflected through the angle plate on each detection sliding block, and the bending angle can be adjusted through sliding adjustment of the plurality of detection sliding blocks, so that the optical fiber can simulate the bending state at a plurality of positions possibly occurring in the actual installation process, and the accurate detection is performed.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic top view of the present utility model.

Fig. 3 is a schematic left-hand view of the present utility model.

Fig. 4 is a schematic perspective view of the present utility model.

Fig. 5 is a schematic perspective view of a detecting slider according to the present utility model.

Detailed Description

The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of embodiments of the present utility model when taken in conjunction with the accompanying drawings, wherein like reference characters refer to the same parts throughout the different views.

Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

The first embodiment of the utility model is an optical fiber bending loss detection device, which comprises a detection base 1, wherein the detection base 1 can be placed on a tabletop for use, the detection base 1 is rectangular, the middle of the top surface of the detection base 1 is provided with an adjusting chute 2 along the length direction of the detection base 1, the top surface of the detection base 1 is provided with a plurality of detection chute 3 which are respectively positioned at the front side and the rear side of the adjusting chute 2 and are communicated with the adjusting chute 2, the middle part of the adjusting chute 2 is fixedly provided with a center block 4, the top of the center block 4 is rotatably provided with a center wire loop 5, the center wire loop 5 can rotate at the top of the center block 4, a plurality of detection sliders 6 are slidably arranged in the adjusting chute 2, the detection sliders 6 can slide left and right in the adjusting chute 2 and can slide into one of the detection chutes 3 from the adjusting chute 2, the number of the detection sliders 6 can be increased or decreased as required, the top of each detection slider 6 is provided with a detection wire loop 7, the axis of the detection wire loop 7 is in the left and right directions, the top surface of each detection slider 6 is fixedly provided with two wire loops 7 respectively positioned at the front side and rear side of the detection plate 8, the two detection plate 7 are fixedly arranged at the top surface of the detection slider 6, the two detection sliders are fixedly provided with a plurality of wire loops 9 which are fixedly arranged at the left and right side and right sides of the detection base 9, and the optical fiber clamping device is fixedly connected with the center 10 and the optical fiber clamping device is arranged between the two sides and the center device to the center 10;

when the optical fiber detection device is used, firstly, the plurality of detection sliding blocks 6 are all positioned in the adjusting sliding groove 2, one end of the optical fiber 10 to be detected is fixed on one clamping device 9, the other end of the optical fiber 10 to be detected sequentially passes through the plurality of detection wire rings 7 and the central wire ring 5, then the plurality of detection sliding blocks 6 can slide into each detection sliding groove 3 from the adjusting sliding groove 2, at the moment, the optical fiber 10 to be detected is bent, each detection position is a bending point, the angle plate 8 can reflect the bending angle of the optical fiber, so that the optical fiber 10 to be detected can simultaneously generate a plurality of bending points, the position of the detection sliding blocks 6 can be changed through sliding, the bending degree of the optical fiber 10 to be detected can be changed, the other end of the optical fiber 10 to be detected can be fixed on the other clamping device 9 after the bending degree is adjusted, and the optical fiber 10 to be detected through a detection instrument, and different bending degrees can be detected.

On the basis of the first embodiment, the bottom surfaces of the adjusting chute 2 and the detecting chute 3 are fixedly provided with the magnet pieces 11, the bottom of each detecting slide block 6 is fixedly provided with the magnet piece 12, the detecting slide blocks 6 can be adsorbed on the magnet pieces 11 through the magnet pieces 12, the detecting slide blocks 6 can be detached and slid in the adjusting chute 2 and the detecting chute 3, and when the number of bending points of the optical fibers 10 to be detected is increased, the spare detecting slide blocks 6 can be directly arranged in the adjusting chute 2 or the detecting chute 3 to be adsorbed and mounted, and can be slid for adjustment.

In the third embodiment, on the basis of the second embodiment, the bottom surfaces of the adjusting chute 2 and the detecting chute 3 are respectively provided with a plurality of positioning holes 13 penetrating through the magnet sheet 11, each detecting slide block 6 is hollow, a positioning pin 14 matched with the positioning holes 13 is respectively penetrated and slidably installed between the top surface of each detecting slide block 6 and the bottom surface of the corresponding magnet block 12, the detecting wire loop 7 is fixedly installed at the top end of the positioning pin 14, a reset spring 15 is fixedly sleeved on the outer side of a part of the positioning pin 14 positioned inside the detecting slide block 6, the detecting slide block 6 can be fixed at a certain position in the adjusting chute 2 or the detecting chute 3 through the positioning pin 14, so that the bending degree of the optical fiber 10 to be detected is not changed, the detecting wire loop 7 can be lifted upwards to drive the positioning pin 14 to move upwards and compress the reset spring 15, the detecting slide block 6 can be adjusted after the positioning pin 14 is separated from the corresponding positioning hole 13, and the positioning pin 14 is released from the corresponding positioning hole 13 to be inserted into the corresponding positioning hole 13 under the elasticity of the reset spring 15 to fix.

In a fourth embodiment, on the basis of the first embodiment, the clamping device 9 includes clamping holders 16 fixedly mounted on the left and right sides of the detection base 1, each clamping holder 16 has a clamping rod 17 penetrating and slidably mounted between the top surface and the bottom surface of the front and rear ends of the clamping holder 16, one end of each clamping rod 17 above the clamping holder 16 is fixedly mounted with a clamping plate 18, two clamping springs 19 are fixedly connected between the bottom ends of the clamping rods 17 and the bottom surface of the clamping holder 16, when the optical fiber 10 to be detected is clamped, the clamping plates 18 can be lifted upwards, and simultaneously the two clamping rods 17 move upwards and compress the two clamping springs 19, after one end of the optical fiber 10 to be detected is placed between the clamping holder 16 and the clamping plates 18, the clamping plates 18 are released, and the clamping rods 17 and the clamping plates 18 are driven to move downwards by the reset springs 19, so that the clamping holders 16 and the clamping plates 18 are fixed, and when the detection base 1 needs to be moved, the two clamping holders 16 can also be lifted and moved.

In the fifth embodiment, on the basis of the first embodiment, the top surface of the clamping seat 16 and the bottom surface of the clamping plate 18 are both provided with anti-slip pads, which can prevent the optical fiber 10 to be inspected from loosening between the clamping seat 16 and the clamping plate 18 when the optical fiber 10 to be inspected is pulled.

Claims

1. The utility model provides an optical fiber bending loss detection device, includes detects base (1), its characterized in that, it has regulation spout (2) to detect the top surface middle part of base (1) along its length direction, it has a plurality of detection spouts (3) that are located respectively and adjust spout (2) front and back both sides and all communicate with regulation spout (2) to detect the top surface of base (1), the middle part fixed mounting who adjusts spout (2) has center piece (4), center piece (4) top rotation installs center wire loop (5), install a plurality of detection sliders (6) in regulation spout (2), every detect the top of slider (6) and all install detection wire loop (7), every detect equal fixed mounting on the top surface of slider (6) have two angle plates (8) that are located respectively and detect wire loop (7) front and back both sides, the middle part of the both sides face of detection base (1) all fixed mounting have clamping device (9), two fixedly connected with between clamping device (9) and wait that a plurality of detection wire loops (7) and center optical fiber (10) examine in proper order.

2. The optical fiber bending loss detection device according to claim 1, wherein the bottom surfaces of the adjusting chute (2) and the plurality of detecting chutes (3) are fixedly provided with magnet pieces (11), and the bottom of each detecting slide block (6) is fixedly provided with a magnet block (12).

3. The optical fiber bending loss detection device according to claim 2, wherein a plurality of positioning holes (13) penetrating through the magnet sheet (11) are formed in the bottom surfaces of the adjusting chute (2) and the detecting chute (3), the inside of each detecting sliding block (6) is hollow, a positioning pin (14) matched with the positioning holes (13) is penetrated and slidably installed between the top surface of each detecting sliding block (6) and the bottom surface of the magnet block (12), the detecting wire loop (7) is fixedly installed at the top end of the positioning pin (14), and a reset spring (15) is fixedly sleeved on the outer side of a part of the positioning pin (14) positioned inside the detecting sliding block (6).

4. The optical fiber bending loss detection device according to claim 1, wherein the clamping device (9) comprises clamping seats (16) fixedly installed on the left side surface and the right side surface of the detection base (1), clamping rods (17) are installed between the top surface and the bottom surface of the front end and the rear end of each clamping seat (16) in a penetrating and sliding mode, clamping plates (18) are fixedly installed at one ends, located above the clamping seats (16), of each two clamping rods (17), and clamping springs (19) are fixedly connected between the bottom ends of the two clamping rods (17) and the bottom surface of the clamping seat (16).

5. The optical fiber bending loss detection apparatus according to claim 4, wherein the top surface of the holder (16) and the bottom surface of the holder plate (18) are each provided with a non-slip mat.