Optical fiber line loss and optical fiber end surface loss detection device

Abstract

The invention belongs to the field of optical fiber line loss quality detection, and discloses an optical fiber line loss and optical fiber end face loss detection device, which comprises a detector, a cleaning box, a jumper wire and a dustproof frame, and is characterized in that the dustproof frame is connected with a dustproof plate and is provided with a positioning groove; the cleaning box is detachably connected with the detector, the cleaning box comprises a first shell and a second shell, the first shell is connected with a fixed pipe, the first shell is connected with a take-up roller and a pay-off roller, the take-up roller is connected with a fluted disc, the fluted disc is provided with ratchet teeth, the second shell is rotationally connected with a rotating shaft, the rotating shaft is connected with a rotating disc, and the rotating disc is rotationally connected with a pawl. The rotating disc is connected with a fixing plate, the fixing plate is connected with an abutting spring, the fixing pipe is slidably connected with a dustproof cover, and the dustproof cover is connected with a positioning plate. According to the technical scheme, the dust influence can be avoided through the cleaning box and the dustproof frame, the subsequent detection precision is improved, a worker is reminded to clean the external connector, and the worker is prevented from directly inserting the external connector into the optical fiber connector.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber line loss quality detection, and in particular to an optical fiber line loss and optical fiber end face loss detection device. Background Art

[0002] Optical fiber transmission has many advantages over cable transmission and wireless transmission. Optical fiber is lighter, smaller, and more flexible than cable, and in long-distance transmission, the propagation speed of optical fiber is faster than that of cable. However, there are many factors that affect the performance of optical fiber transmission. In the fiber-to-the-home project, in order to ensure that the optical fiber can play the expected role after connection, the line loss of the optical fiber and the loss at the end face and connection point are generally tested to ensure that the overall loss of the optical fiber meets the design requirements before the optical fiber can be connected to the user account; the instruments currently used for optical fiber line loss, end face loss, and connection point loss are generally handheld detection equipment such as OTDR optical time domain reflectometers. The principle of its use is to measure the transmission loss of light waves in optical fibers and the reflection and scattering time of light waves to determine the line loss of optical fibers or the loss of optical fiber end faces and optical fiber connectors and the optical fiber damage lighting data; the basic operation is to connect the optical fiber connector to the corresponding connector of the instrument, and then use the instrument's own light source or an external stable light source to detect the different losses of the optical fiber.

[0003] However, in actual use, the fixed connector of the OTDR optical time domain reflectometer is directly exposed to the outside world and is easily contaminated by dust. The optical fiber connector is also easily contaminated when exposed to the outside world. During actual installation and testing, the staff often forget to clean the optical fiber connector and directly connect it to the fixed connector of the instrument, which leads to errors in the measurement data. Since the light loss measurement must be very precise, errors in the measurement data will cause the staff to make wrong judgments, affect work efficiency, increase work costs, and greatly reduce the use effect of the detection device. Summary of the invention

[0004] The present invention is intended to provide a device for detecting optical fiber line loss and optical fiber end face loss to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A device for detecting optical fiber line loss and optical fiber end face loss comprises a detector, a cleaning box, a jumper and a dustproof frame, wherein the detector is connected to an optical fiber connector, the dustproof frame is connected to the detector, the dustproof frame is connected to a dustproof plate, the dustproof plate is connected to a reset spring, the free end of the reset spring is connected to the dustproof frame, and the dustproof frame is provided with a positioning groove; the cleaning box is detachably connected to the detector, the cleaning box comprises a first shell and a second shell, the second shell is buckled with the first shell, the first shell is connected to a fixing tube, the fixing tube is connected to a contact joint, the first shell is connected to It is connected to a take-up roller and a pay-off roller, the resistance joint is provided with a through hole, the take-up roller is connected with a toothed disk, the toothed disk is provided with ratchet teeth, the second shell is rotatably connected with a rotating shaft, the rotating shaft is connected with a rotating disk, the rotating disk is rotatably connected with a pawl, the pawl and the ratchet teeth cooperate with each other, the rotating disk is connected with a fixed plate, the fixed plate is connected with a resistance spring, the other end of the resistance spring is connected with the pawl, the fixed tube is slidably connected with a dust cover, the dust cover is connected with a positioning plate, the positioning plate is slidably connected with the positioning groove, and the positioning plate and the dust plate cooperate with each other.

[0007] Preferably, the jumper is connected to a positioning cylinder, the positioning cylinder is connected to a connecting joint, the detector is connected to a threaded cylinder, the positioning cylinder is slidably connected to a threaded cover, and the threaded cover is threadedly connected to the threaded cylinder.

[0008] Preferably, the fixing tube is connected with a sliding block, the dust cover is provided with a sliding groove, and the sliding block is slidably connected with the sliding groove.

[0009] Preferably, the detector is connected to a placement frame, and the cleaning box is slidably connected to the placement frame.

[0010] Preferably, the detector is connected with a positioning rod, the positioning tube is connected with a positioning frame, the positioning frame is provided with a positioning hole, and the positioning rod and the positioning hole cooperate with each other.

[0011] Preferably, the rotating shaft is rotatably connected to a toggle rod, and the second shell is connected to a limiting block.

[0012] Preferably, the first shell is connected with two groups of fixed columns, the take-up roller and the pay-off roller are slidably connected with the fixed columns respectively, the second shell is connected with a resistance column, the resistance column is in contact with the pay-off roller, and the rotating disc is in contact with the gear disc.

[0013] Preferably, the abutment joint is connected with a rubber pad.

[0014] Compared with the prior art, this technical solution produces the following beneficial effects:

[0015] (1) The technical solution provides a cleaning box and a dustproof frame. The cleaning box can be used to clean the connection joints of optical fibers or jumpers. The dustproof frame can prevent dust from entering the fixed joints, thereby improving the accuracy of subsequent inspections. The dustproof cover can be used to open both at the same time. The dustproof cover and the dustproof plate can be used together to ensure that the dustproof plate can be opened only when the dustproof cover is pulled to open the fixed tube, thereby reminding the staff to clean the external joints and preventing the staff from directly inserting the external joints into the optical fiber joints. The dustproof plate can be automatically popped up by setting a reset spring, thereby improving the operation. Convenience; at the same time, the structure of the cleaning box has been improved. The rotation of the take-up roller is completed through the cooperation of the ratchet and the pawl, which in turn drives the cleaning belt to move to complete the cleaning of the external joint. The principle of one-way limiting of the ratchet and the pawl is utilized. The rotating shaft can be reversed after each time the take-up roller is driven to rotate half a circle, so that each time cleaning only drives the take-up roller to rotate half a circle or a suitable angle, so that the length of the cleaning belt used for each cleaning is the same, which saves the use of the cleaning belt while ensuring the cleaning quality, reduces resource waste, and greatly reduces the complexity of the overall structure, facilitates production operation, reduces costs, and facilitates subsequent maintenance.

[0016] (2) The present technical solution sets up structures such as jumpers, threaded barrels, and threaded caps, so that the fixed joint can only be connected to the matching jumper joint, thereby avoiding repeated insertion of the optical fiber joint, which may cause the fixed joint to wear out and affect subsequent use. The threaded barrel, threaded cap, positioning rod, and positioning frame are set up to improve the connection stability between the connecting joint and the fixed joint, avoiding loose connection during measurement and affecting the measurement structure.

[0017] (3) The dust cover of the technical solution is connected to the fixed tube through the cooperation of the slider and the sliding groove, which improves the connection stability. A placement frame is provided, through which the cleaning box can be detachably connected to the detector. The placement frame, the positioning plate and the positioning groove can be used to limit the cleaning box in the up and down directions, so that the cleaning box is stably connected to the detector. After sliding out the dust cover, the cleaning box can be directly taken out, which is simple to operate and easy to use. The toggle rod and the limit block can accurately determine the rotation angle of the take-up roller at one time, which is convenient for operation and use. The resistance column and the rotating disk can improve the connection stability of the take-up roller and the pay-off roller. The rubber pad can improve the resistance stability between the external joint and the cleaning belt, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a partial cross-sectional view of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 A front view of a partial cross-sectional view of a jumper provided by the present invention;

[0021] Figure 4 A top view of the placement frame provided by the present invention;

[0022] Figure 5 A side partial cross-sectional view of the dustproof frame provided by the present invention;

[0023] Figure 6 A side partial cross-sectional view of the cleaning box provided by the present invention;

[0024] Figure 7 for Figure 6 An enlarged view of the interfering joint in FIG.

[0025] Figure 8 A front partial cross-sectional view of the cleaning box provided by the present invention;

[0026] Fig. 9 A side partial cross-sectional view of the toothed disc provided by the present invention;

[0027] Fig.10 A side view of the cleaning box provided by the present invention;

[0028] Fig.11 A top view and a partial cross-sectional view of the positioning frame provided by the present invention;

[0029] Fig.12 A front view of a partial cross-sectional view of the connection connector provided by the present invention when connected to an optical fiber connector;

[0030] Figure numerals: detector 1, placement frame 2, cleaning box 3, first shell 4, second shell 5, fixing tube 6, dustproof plate 7, positioning rod 8, threaded tube 9, optical fiber connector 10, dustproof frame 11, dustproof cover 12, positioning groove 13, positioning plate 14, jumper 15, positioning tube 16, threaded cover 17, positioning hole 18, positioning frame 19, connecting joint 20, reset spring 21, take-up roller 22, fixed column 23, pay-off roller 24, slider 25, sliding groove 26, contact joint 27, through hole 28, rubber pad 29, contact column 30, toothed disc 31, toggle rod 32, rotating shaft 33, rotating disc 34, pawl 35, ratchet teeth 36, fixing plate 37, contact spring 38, limit block 39. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0032] like Figures 1 to 12The optical fiber line loss and optical fiber end face loss detection device shown in the figure includes a detector 1, a cleaning box 3, a jumper 15 and a dustproof frame 11. The detector 1 is connected to an optical fiber connector 10, the dustproof frame 11 is connected to the detector 1, the optical fiber connector 10 is located inside the dustproof frame 11, the dustproof frame 11 is rotatably connected to a dustproof plate 7, the dustproof plate 7 is connected to a reset spring 21, the free end of the reset spring 21 is connected to the dustproof frame 11, the reset spring 21 is arranged in several groups, and the left side wall of the dustproof frame 11 is provided with a positioning groove 13; the cleaning box 3 is detachably connected to the detector 1, the cleaning box 3 includes a first shell 4 and a second shell 5, the second shell 5 is buckled with the first shell 4, the first shell 4 and the second shell 5 are buckled by a snap-fit ​​method, the top of the first shell 4 is connected to a fixing tube 6, and the inner side of the fixing tube 6 is connected to a resistance joint 27 , the resistance joint 27 is connected to a rubber pad 29; the inner side of the first shell 4 is rotatably connected to the take-up roller 22 and the pay-off roller 24, the resistance joint 27 is provided with a through hole 28, and the through hole 28 is convenient for the cleaning belt to pass through, the take-up roller 22 is connected to a toothed disk 31, and the inner ring of the toothed disk 31 is provided with ratchet teeth 36, the second shell 5 is rotatably connected to a rotating shaft 33, the rotating shaft 33 is connected to a rotating disk 34, the rotating disk 34 is rotatably connected to a pawl 35, the pawl 35 and the ratchet teeth 36 cooperate with each other, the rotating disk 34 is connected to a fixed plate 37, the fixed plate 37 is connected to a resistance spring 38, and the other end of the resistance spring 38 is connected to the pawl 35, the fixed tube 6 is slidably connected to a dust cover 12, the dust cover 12 is connected to a positioning plate 14, the positioning plate 14 is slidably connected to the positioning groove 13, and the positioning plate 14 and the dust plate 7 cooperate with each other.

[0033] The jumper 15 is connected to a positioning tube 16, the positioning tube 16 is connected to a connecting joint 20, the detector 1 is connected to a threaded tube 9, the optical fiber joint 10 is located on the inner side of the threaded tube 9, the positioning tube 16 is slidably connected to a threaded cover 17, and the threaded cover 17 is threadedly connected to the threaded tube 9; the detector 1 is connected to a positioning rod 8, the positioning tube 16 is connected to a positioning frame 19, the positioning frame 19 is provided with a positioning hole 18, the positioning rod 8 and the positioning hole 18 cooperate with each other; the positioning rod 8 can pass through the positioning hole 18.

[0034] The detector 1 is connected to a placement frame 2, and the cleaning box 3 is slidably connected to the placement frame 2; the fixed tube 6 is connected to a slider 25, and the dust cover 12 is provided with a sliding groove 26, and the slider 25 is slidably connected to the sliding groove; the rotating shaft 33 is rotatably connected to the toggle rod 32, and the second shell 5 is connected to a limit block 39, and the limit block 39 is provided with two groups, and the two groups of limit blocks 39 are respectively located on the left and right sides of the toggle rod 32, and the first shell 4 is connected to two groups of fixed columns 23, and the take-up roller 22 and the pay-off roller 24 are respectively slidably connected to the fixed columns 23, and the second shell 5 is connected to a resistance column 30, and the resistance column 30 is in contact with the pay-off roller 24, and the rotating disk 34 is in contact with the toothed disk 31.

[0035] When the cleaning box 3 is used, the unused cleaning tape is wound on the pay-off roller 24, and the free end of the cleaning tape passes through the through holes 28 on the right and left sides of the abutment joint 27 in turn, and then connected to the take-up roller 22, and at the same time abuts against the rubber pad 29, such as Figure 6 and Figure 7 The rotating shaft 33 can drive the rotating disc 34 to rotate, which can then drive the pawl 35 to rotate, the pawl 35 is rotatably connected to the rotating disc 34, and the pawl 35 cooperates with the ratchet ruler, such as Fig. 9 As shown, due to the provision of a resistance spring 38, under the action of the resistance spring 38, the pawl 35 cannot easily fall out of the ratchet teeth 36. Due to the transmission relationship between the ratchet teeth 36 and the pawl 35, when the rotating disk 34 rotates clockwise, the pawl 35 will rotate clockwise along the ratchet teeth 36. At this time, the pawl 35 cannot drive the toothed disk 31 to rotate. When the rotating disk 34 rotates counterclockwise, the pawl 35 will generate a force on the ratchet ruler, thereby driving the toothed disk 31 to rotate with the rotating disk 34, thereby driving the take-up roller 22 to rotate. The take-up roller 22 reels the cleaning belt, and the pay-off roller 24 pays out the cleaning belt. The cleaning belt will slide relative to the rubber pad 29. When in use, the point to be cleaned will contact the cleaning belt on the rubber pad 29, and the cleaning belt can be moved to complete the cleaning; the rotating disk 34 can be driven to rotate by the rotating rod, and the toggle rod 32 can rotate relative to the rotating shaft 33, so that the toggle rod 32 can be rotated to a state perpendicular to the rotating shaft 33, such as Fig.10 As shown, when the toggle lever 32 is rotated to a state perpendicular to the rotating shaft 33, it will be limited by the resistance block, thereby limiting the rotation angle of the rotating shaft 33, thereby completing the control of the rotation angle of the rotating disk 34, and then completing the control of the rotation angle of the take-up roller 22; Fig.10 As shown, when the toggle rod 32 conflicts with the left limit rod, the toggle rod 32 is rotated clockwise to make it conflict with the right limit block 39. At this time, the toggle rod 32 rotates 180 degrees, and the toggle rod 32 drives the rotating shaft 33 to rotate 180 degrees clockwise, thereby driving the rotating disk 34 to rotate clockwise. The clockwise rotation of the rotating disk 34 will not drive the toothed disk 31 to rotate. When the joint needs to be cleaned, the toggle rod 32 that conflicts with the right limit block 39 is rotated 180 degrees counterclockwise to conflict with the left limit block 39. Similarly, the rotating disk 34 is driven to rotate counterclockwise. At this time, the pawl 35 will drive the toothed disk 31 and the take-up roller 22 to rotate 180 degrees through the cooperation with the ratchet teeth 36, thereby completing the winding of the cleaning belt and completing the cleaning. Repeating the above actions can complete multiple cleanings.

[0036] The specific implementation process is as follows:

[0037] like Figure 1 , Figure 2 and Figure 5As shown, when the dust cover 12 is located on the upper side of the fixed tube 6, the positioning plate 14 is inserted into the positioning groove 13. At this time, the dust cover 12 plays a role of sealing and dustproofing the fixed tube 6. Through the cooperation of the positioning plate 14 and the positioning groove 13 and the cooperation of the placement frame 2, the cleaning box 3 can be stably placed on the left side of the detector 1. After the right end of the positioning plate 14 is inserted into the positioning groove 13, it passes through the positioning groove 13 and conflicts with the top of the dust cover 7. At this time, the dust cover 7 cannot be turned upward, so as to realize dustproof protection of the optical fiber connector 10. It is necessary to use the detector. When the measuring instrument 1 is used, the dust cover 12 slides out to the left, and the dust cover 12 opens the fixed tube 6. As the dust cover 12 slides to the left, the positioning plate 14 also slides to the left away from the upper side of the dust plate 7. The positioning plate 14 no longer limits the dust plate 7. Under the action of the return spring 21, the dust plate 7 rotates upward, and then the dust frame 11 is opened. At this time, the connecting joint 20 can be connected to the fixed joint, that is, the connection of the optical fiber connector 10 cannot be achieved without opening the dust cover 12, reminding the staff not to forget to clean the connecting joint 20.

[0038] After opening the fixed tube 6 and the dustproof frame 11 according to the above operation, insert the connecting joint 20 into the fixed tube 6, and the line connection point contacts the cleaning tape at the rubber pad 29. At this time, rotating the toggle lever 32 can drive the take-up roller 22 to take up the line, and at the same time the pay-off roller 24 pays out the line, thereby moving the cleaning tape to complete the wiping and cleaning of the connection point. The used cleaning tape is wound on the take-up roller 22. After cleaning, take the connecting joint 20 out of the fixed tube 6, align the connecting joint 20 with the optical fiber connector 10, align the positioning hole 18 with the positioning rod 8, and rub the connecting joint 20 into the optical fiber connector 10. At this time, the positioning rod 8 is also inserted into the positioning hole 18. The connecting joint 20 cannot be rotated or moved horizontally relative to the optical fiber connector 10 through the positioning rod 8 and the positioning hole 18. Then screw the threaded cover 17 to align the threaded cover 17 with the screw The grooved cylinder 9 is threadedly connected. After the threaded rod and the threaded cylinder 9 are threadedly connected, the inner side of the top of the threaded cover 17 just contacts the top of the connecting joint 20, so that the connecting joint 20 cannot move up and down relative to the optical fiber connector 10, and the stable connection between the jumper 15 and the optical fiber connector 10 is completed. The other end of the jumper 15 is connected to a connector connected to the optical fiber to be tested. Before the connection, the corresponding connector is cleaned in the same way. The connector is connected to the connector of the optical fiber to be tested, and the loss of the optical fiber can be detected by the detector 1; multiple groups of optical fibers to be tested can be repeatedly plugged and unplugged from the jumper 15 connector, which greatly reduces the wear of the optical fiber connector 10; after the detection is completed, the connecting joint 20 is removed from the optical fiber connector 10, the dustproof plate 7 is rotated to close the dustproof frame 11, and then the sliding groove 26 is aligned with the slider 25, and the positioning cover is slid to the upper side of the fixed tube 6 again.

[0039] The following describes the disassembly and installation of the cleaning box 3. Figure 6As shown, at this time, the second shell 5 is buckled with the first shell 4. When buckled, the abutting column 30 abuts against the pay-off roller 24, and the rotating disk 34 abuts against the take-up roller 22, but it will not affect the rotation of the pay-off roller 24 and the take-up roller 22. The take-up roller 22 and the pay-off roller 24 are slidably connected with the corresponding fixed column 23 respectively. Since the abutting column 30 abuts against the pay-off roller 24, the rotating disk 34 abuts against the take-up roller 22, and the friction between the pay-off roller 24 and the take-up roller 22 and the fixed column 23 can be controlled, the pay-off roller 24 and the take-up roller 22 will not rotate easily, ensuring that the cleaning tape will not be scattered at will. When disassembly is required, the second shell 5 is removed, and the rotating disk 34 and the ratchet pawl 35 are also taken out, and then the cleaning tape is cut off, and then the pay-off roller 24 and the take-up roller 22 can be removed from the fixed column 23, and the new pay-off roller 24 and the take-up roller 22 are replaced, the new cleaning tape is installed, and then the second shell 5 is buckled for use again.

[0040] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for detecting optical fiber line loss and optical fiber end face loss, characterized in that: The invention comprises a detector (1), a cleaning box (3), a jumper (15) and a dustproof frame (11), wherein the detector (1) is connected to an optical fiber connector (10), the dustproof frame (11) is connected to the detector (1), the dustproof frame (11) is connected to a dustproof plate (7), the dustproof plate (7) is connected to a reset spring (21), the free end of the reset spring (21) is connected to the dustproof frame (11), and the dustproof frame (11) is provided with a positioning groove (13); the cleaning box (3) is detachably connected to the detector (1), the cleaning box (3) comprises a first shell (4) and a second shell (5), the second shell (5) is buckled with the first shell (4), the first shell (4) is connected to a fixing tube (6), the fixing tube (6) is connected to a contact joint (27), the first shell (4) is connected to a take-up roller (22) and a pay-off roller (24), the contact joint (27) is connected to the first shell (4), The contact head (27) is provided with a through hole (28); the take-up roller (22) is connected with a toothed disc (31); the toothed disc (31) is provided with ratchet teeth (36); the second housing (5) is rotatably connected with a rotating shaft (33); the rotating shaft (33) is connected with a rotating disc (34); the rotating disc (34) is rotatably connected with a pawl (35); the pawl (35) and the ratchet teeth (36) cooperate with each other; the rotating disc (34) is connected with a fixing plate (37); the fixing plate (37) is connected with a resisting spring (38); the other end of the resisting spring (38) is connected with the pawl (35); the fixing tube (6) is slidably connected with a dust cover (12); the dust cover (12) is connected with a positioning plate (14); the positioning plate (14) is slidably connected with the positioning groove (13); the positioning plate (14) and the dust cover (7) cooperate with each other.

2. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The jumper (15) is connected to a positioning cylinder (16), the positioning cylinder (16) is connected to a connecting joint (20), the detector (1) is connected to a threaded cylinder (9), the positioning cylinder (16) is slidably connected to a threaded cover (17), and the threaded cover (17) is threadedly connected to the threaded cylinder (9).

3. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The fixed tube (6) is connected with a sliding block (25), the dust cover (12) is provided with a sliding groove (26), and the sliding block (25) is slidably connected with the sliding groove (26).

4. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The detector (1) is connected to a placement frame (2), and the cleaning box (3) is slidably connected to the placement frame (2).

5. The optical fiber line loss and optical fiber end face loss detection device according to claim 2, characterized in that: The detector (1) is connected to a positioning rod (8), the positioning tube (16) is connected to a positioning frame (19), the positioning frame (19) is provided with a positioning hole (18), and the positioning rod (8) and the positioning hole (18) cooperate with each other.

6. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The rotating shaft (33) is rotatably connected to a toggle rod (32), and the second housing (5) is connected to a limiting block (39).

7. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The first shell (4) is connected to two groups of fixed columns (23), the take-up roller (22) and the pay-off roller (24) are respectively slidably connected to the fixed columns (23), the second shell (5) is connected to a resistance column (30), the resistance column (30) is in resistance with the pay-off roller (24), and the rotating disc (34) is in resistance with the toothed disc (31).

8. The optical fiber line loss and optical fiber end face loss detection device according to claim 1, characterized in that: The abutment joint (27) is connected with a rubber pad (29).

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