N-path fiber grating sensing light splitting coupler

Abstract

The invention discloses an N-path fiber bragg grating sensing light splitting coupler, and relates to the technical field of communication, the N-path fiber bragg grating sensing light splitting coupler comprises an optical splitter body, the optical splitter body comprises a waveguide substrate, the surface of the waveguide substrate is fixedly connected with a cover plate, the surface of the waveguide substrate is respectively provided with an N + 1 channel fiber array and an N channel fiber array, one side of the waveguide substrate is provided with a fiber bragg grating sensor, the other side of the waveguide substrate is provided with a fiber body, the N-path fiber bragg grating sensing light-splitting coupler can achieve the purpose of preventing a line at a fiber joint from bending through the cooperative use of the anti-bending unit and the pushing unit, and after the fiber line is connected with the joint, the fiber bragg grating sensing light-splitting coupler has the advantages of being simple in structure and convenient to use. According to the optical branching device, the transverse and straight state of the connecting position of the optical fiber lines can be effectively guaranteed, bending of the connecting position of the optical fiber lines is avoided, propagation of optical signals is guaranteed, interference of the optical signals is prevented, and the stability of the optical branching device in use is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, in particular to an N-channel optical fiber Bragg grating sensing splitter coupler. Background Art

[0002] Optical splitters are key passive components in fiber optic networks. Optical splitters are key passive components in fiber optic communication networks. They are mainly used to realize the branching and distribution of optical signals. They are widely used in fiber-to-the-home, data center interconnection, 5G fronthaul networks, and fiber optic sensing systems. With the acceleration of the global digitalization process and the rapid development of high-speed broadband, cloud computing, the Internet of Things, and 5G / 6G communications, higher requirements are placed on the performance, integration, reliability, and cost of optical splitters.

[0003] When existing optical splitters are used, the fiber optic lines of the splitters are easily bent at the connectors after being connected to the connectors. This can cause interference with the optical signal, affecting the propagation of the optical signal and reducing the stability of the optical signal during use, thus affecting the effectiveness of the optical splitter. To address this issue, we propose an N-channel fiber Bragg grating sensing splitter coupler.

[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing spectroscopic couplers on the market. Even if they can be solved, they need to be solved with the help of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose an N-channel fiber grating sensor spectroscopic coupler. Summary of the Invention

[0005] The object of the present invention is to provide an N-channel fiber Bragg grating sensing splitter coupler to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an N-channel fiber Bragg grating (FBG) sensing splitter coupler, comprising an optical splitter body, the optical splitter body comprising a waveguide substrate, a cover plate fixedly connected to the surface of the waveguide substrate, an N+1 channel fiber array and an N channel fiber array respectively disposed on the surface of the waveguide substrate, a fiber Bragg grating sensor disposed on one side of the waveguide substrate, an optical fiber body disposed on the other side of the waveguide substrate, a PD connector fixedly connected to one end of the optical fiber body, a stabilizing mechanism disposed on the surface of the PD connector, and a COM waveguide, a 2×1Y bifurcated waveguide, and a waveguide optical path disposed within the waveguide substrate;

[0007] The stabilizing mechanism includes an anti-bending unit, and the anti-bending unit is arranged on the surface of the PD connector;

[0008] The stabilizing mechanism further includes a pushing unit, which is arranged on one side of the anti-bending unit and is used in conjunction with the anti-bending unit;

[0009] A limiting mechanism is provided on one side of the anti-bending unit.

[0010] Preferably, the anti-bending unit includes two shells, which are arranged on the surface of the PD connector and are clamped between the two shells. The inner cavity of one of the shells is fixedly connected to two telescopic rods, and the surfaces of the telescopic rods are respectively fixedly sleeved with a circular plate and a second N-pole magnet. The telescopic end of the telescopic rod is fixedly connected to the first N-pole magnet, and the surface of the circular plate is fixedly connected to four groups of S-pole magnets, and one side of the first N-pole magnet is fixedly connected to an anti-bending plate.

[0011] Preferably, one of the inner cavities of the outer shell is rotatably connected to two winding rods, and the surface of the winding rod is fixedly sleeved with two winding wheels, and the surface of the winding wheel is wrapped with a pull rope, one end of the pull rope is fixedly connected to the surface of the winding wheel, and the other end of the pull rope is fixedly connected to a short plate, and one end of the short plate is fixedly connected to one side of the anti-bending plate, and one of the inner cavities of the outer shell is fixedly connected to four connecting rods, and the rotating sleeve of the connecting rod is provided with a fixed pulley, and the fixed pulley is used in conjunction with the pull rope.

[0012] Preferably, one end of the winding rod passes through one side of one of the outer shells, the surface of the winding rod is provided with a rotating sleeve, the surface of the winding rod is provided with a stabilizing groove for cooperating with the rotating sleeve, the surface of the rotating sleeve is provided with a limiting ring, one side of the limiting ring is fixedly connected to the surface of one of the outer shells, and the inner cavity of the limiting ring is provided with a limiting groove for cooperating with the rotating sleeve.

[0013] Preferably, the pushing unit includes two U-shaped rods, one side of the U-shaped rod is fixedly connected to the inner cavity of one of the outer shells, one end of the U-shaped rod is fixedly connected to two L-shaped limit frames, and the surface of the winding rod is fixedly sleeved with two gears, and the surface of the gear is meshed with a tooth plate.

[0014] Preferably, a T-shaped guide rod is fixedly connected to one side of the tooth plate, and one end of the T-shaped guide rod passes through one side of the L-shaped limit frame and is slidably connected to the inner cavity of the L-shaped limit frame.

[0015] Preferably, a short rod is fixedly connected to the surface of the L-shaped limit frame, and a first spring is movably sleeved on the surface of the short rod. The two ends of the first spring are respectively fixedly connected to the surfaces of the L-shaped limit frame and the tooth plate, and a circular hole is opened inside the tooth plate for use with the short rod.

[0016] Preferably, the limiting mechanism includes two radian limiting plates, the radian limiting plates are arranged on one side of the anti-bending plate, and a mounting groove is provided on one side of the anti-bending plate.

[0017] Preferably, a second spring is fixedly connected to the inner cavity of the mounting groove, one end of the second spring is fixedly connected to a movable plate, and one end of the movable plate is fixedly connected to one side of the arc limiting plate.

[0018] Preferably, the other end of the movable plate is slidably connected to the inner cavity of the mounting groove, a semicircular block is fixedly connected to one side of the movable plate, and an extrusion block is fixedly connected to the surface of the winding rod, and the extrusion block is used in conjunction with the semicircular block.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention can achieve the purpose of preventing the line from bending at the optical fiber connector by setting up an anti-bending unit and a pushing unit for use. After the optical fiber line is connected to the connector, the horizontal and vertical state of the optical fiber line connection can be effectively ensured, thereby avoiding bending at the optical fiber line connection, thereby ensuring the propagation of the optical signal and preventing interference with the optical signal, thereby ensuring the stability of the optical splitter during use.

[0021] 2. The present invention can further prevent the optical fiber line connection from bending by setting a limiting mechanism. After the optical fiber line is connected to the connector, it can effectively contact both sides of the multiple lines at the optical fiber connection, limit the multiple lines at the optical fiber line connection, effectively prevent the lateral bending of the multiple lines at the optical fiber connection, and ensure that the optical fiber line connection is always in a straight state, so that it can better transmit the optical signal and improve the effect of optical signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall perspective structure of the present invention from a top view;

[0024] Figure 3 It is a front view structural schematic diagram of the present invention as a whole;

[0025] Figure 4 Schematic diagram of the local structure of the optical fiber of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the housing of the present invention;

[0027] Figure 6 It is a schematic diagram of the local structure of the stabilizing mechanism of the present invention;

[0028] Figure 7Schematic diagram of the structure of the connecting rod of the present invention;

[0029] Figure 8 Schematic diagram of the structure of the PD connector of the present invention;

[0030] Figure 9 This is a schematic diagram of a partial bottom view of the anti-bending unit of the present invention;

[0031] Figure 10 Schematic diagram of the structure of the first N-pole magnet of the present invention;

[0032] Figure 11 For the present invention Figure 10 A magnified view of middle A;

[0033] Figure 12 Schematic diagram of the structure of the S-pole magnet of the present invention;

[0034] Figure 13 This is a schematic diagram of the top view of the anti-bending plate of the present invention;

[0035] Figure 14 This is a schematic diagram of the partial explosion structure of the present invention;

[0036] Figure 15 For the present invention Figure 14 Enlarged view of middle B;

[0037] Figure 16 For the present invention Figure 14 Enlarged view of middle C;

[0038] Figure 17 It is a schematic diagram of the cross-sectional structure of the tooth plate of the present invention.

[0039] Figure: 1. Optical splitter body; 101. Waveguide substrate; 102. Cover plate; 103. Optical fiber body; 104. N+1 channel optical fiber array; 105. N channel optical fiber array; 106. Fiber Bragg grating sensor; 107. PD connector; 108. COM waveguide; 109. 2×1Y bifurcated waveguide; 110. Waveguide optical path; 2. Stabilizing mechanism; 21. Anti-bending unit; 2101. Rotating sleeve; 2102. Circular plate; 2103. Anti-bending plate; 2104. Short plate; 2105. Pull rope; 2106. Connecting rod; 2107. Fixed pulley; 2108. Housing; 2109. Telescopic rod; 2110 , first N-pole magnet; 2111, winding rod; 2112, winding wheel; 2113, S-pole magnet; 2114, second N-pole magnet; 2115, stabilizing groove; 2116, limiting ring; 2117, limiting groove; 22, pushing unit; 2201, gear; 2202, tooth plate; 2203, first spring; 2204, L-shaped limiting frame; 2205, short rod; 2206, T-shaped guide rod; 2207, round hole; 2208, U-shaped rod; 3, limiting mechanism; 301, arc limiting plate; 302, semicircular block; 303, second spring; 304, mounting groove; 305, moving plate; 306, extrusion block. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figures 1-17The present invention provides a technical solution: an N-channel fiber Bragg grating sensor splitter coupler, comprising an optical splitter body 1, the optical splitter body 1 comprising a waveguide substrate 101, a cover plate 102 fixedly connected to the surface of the waveguide substrate 101, an N+1 channel fiber array 104 and an N channel fiber array 105 respectively arranged on the surface of the waveguide substrate 101, a fiber Bragg grating sensor 106 arranged on one side of the waveguide substrate 101, an optical fiber body 103 arranged on the other side of the waveguide substrate 101, one end of the optical fiber body 103 fixedly connected to a PD connector 107, a stabilizing mechanism 2 arranged on the surface of the PD connector 107, and a waveguide substrate 101. The COM waveguide 108, 2×1 Y-forked waveguide 109, and waveguide optical path 110 are provided inside. By providing the 2×1 Y-forked waveguide 109 and utilizing the Y-forked waveguide cascade, the optical signal transmission and reception are integrated. By limiting the waveguide crossing angle and optimizing crosstalk, it is beneficial to reduce the device size, facilitate the winding of optical fibers, and improve the integration of optical components. At the same time, through the optical waveguide integration technology, not only can the optical signal transmission and reception be integrated, but also the mutual interference of optical signals can be reduced. By providing the N+1 channel optical fiber array 104, the optical signal can be multi-path propagated and transmitted to the PD connector 107, thereby effectively realizing multi-path sensing.

[0042] The stabilizing mechanism 2 includes an anti-bending unit 21 , which is disposed on the surface of the PD connector 107 ;

[0043] The stabilizing mechanism 2 further includes a pushing unit 22 . The pushing unit 22 is disposed on one side of the anti-bending unit 21 , and the pushing unit 22 cooperates with the anti-bending unit 21 for use.

[0044] As a further definition of the present invention, the anti-bending unit 21 includes two shells 2108, which are arranged on the surface of the PD connector 107. The two shells 2108 are clamped together, and the inner cavity of one of the shells 2108 is fixedly connected to two telescopic rods 2109. The surfaces of the telescopic rods 2109 are respectively fixedly sleeved with a circular plate 2102 and a second N-pole magnet 2114. The telescopic end of the telescopic rod 2109 is fixedly connected to a first N-pole magnet 2110, and the surface of the circular plate 2102 is fixedly connected to four groups of S-pole magnets 2113. One side of the first N-pole magnet 2110 is fixedly connected to an anti-bending plate 2103. By setting the anti-bending plate 2103, it can contact multiple lines of the optical fiber body 103, thereby limiting the multiple lines of the optical fiber body 103, ensuring that the multiple lines at the connection of the optical fiber body 103 are in a straight state, effectively preventing the bending of the lines at the connection of the optical fiber body 103, ensuring the efficiency of optical signal transmission, and improving the stability of optical signal transmission.

[0045] The inner cavity of one of the outer shells 2108 is rotatably connected to two winding rods 2111, and the surface of the winding rod 2111 is fixedly sleeved with two winding wheels 2112, and the surface of the winding wheel 2112 is wrapped with a pull rope 2105, one end of the pull rope 2105 is fixedly connected to the surface of the winding wheel 2112, and the other end of the pull rope 2105 is fixedly connected to a short plate 2104, and one end of the short plate 2104 is fixedly connected to one side of the anti-bending plate 2103. The inner cavity of one of the outer shells 2108 is fixedly connected to four connecting rods 2106, and the rotating sleeve of the connecting rod 2106 is provided with a fixed pulley 2107, which is used in conjunction with the pull rope 2105.

[0046] One end of the winding rod 2111 passes through one side of one of the outer shells 2108, and the surface of the winding rod 2111 is movably sleeved with a rotating sleeve 2101, and the surface of the winding rod 2111 is provided with a stabilizing groove 2115 for cooperating with the rotating sleeve 2101, and the surface of the rotating sleeve 2101 is movably sleeved with a limiting ring 2116, one side of the limiting ring 2116 is fixedly connected to the surface of one of the outer shells 2108, and the inner cavity of the limiting ring 2116 is provided with a limiting groove 2117 for cooperating with the rotating sleeve 2101.

[0047] The pushing unit 22 includes two U-shaped rods 2208, one side of the U-shaped rod 2208 is fixedly connected to the inner cavity of one of the shells 2108, and one end of the U-shaped rod 2208 is fixedly connected to two L-shaped limit frames 2204. The surface of the winding rod 2111 is fixedly sleeved with two gears 2201, and the surface of the gear 2201 is engaged with a tooth plate 2202. By setting the tooth plate 2202, after the multiple lines of the optical fiber body 103 are connected to the PD connector 107, the optical fiber body 103 can be contacted and a slight thrust can be applied to the optical fiber body 103, thereby ensuring that the connection between the multiple lines of the optical fiber body 103 and the PD connector 107 can effectively maintain a straight line state, prevent the bending of the optical fiber body 103, and improve the effect of optical signal propagation.

[0048] A T-shaped guide rod 2206 is fixedly connected to one side of the tooth plate 2202 . One end of the T-shaped guide rod 2206 passes through one side of the L-shaped limit frame 2204 and is slidably connected to the inner cavity of the L-shaped limit frame 2204 .

[0049] The surface of the L-shaped limit frame 2204 is fixedly connected to a short rod 2205, and the surface of the short rod 2205 is movably sleeved with a first spring 2203. The two ends of the first spring 2203 are respectively fixedly connected to the surfaces of the L-shaped limit frame 2204 and the tooth plate 2202. The interior of the tooth plate 2202 is provided with a circular hole 2207 for cooperating with the short rod 2205. By providing the L-shaped limit frame 2204, the tooth plate 2202 can be supported, thereby ensuring the stability of the tooth plate 2202, so that the tooth plate 2202 can apply thrust to the optical fiber body 103 more stably, ensuring the straightening effect of the optical fiber body 103, thereby ensuring the effect of the optical fiber body 103 on the propagation of optical signals and improving the stability during use.

[0050] By setting up the anti-bending unit 21 and the pushing unit 22 for use in conjunction, the purpose of preventing the line from bending at the optical fiber connector can be achieved. After the optical fiber line is connected to the connector, the horizontal and vertical state of the optical fiber line connection can be effectively guaranteed, avoiding bending at the optical fiber line connection, thereby ensuring the propagation of the optical signal and preventing interference with the optical signal, thereby ensuring the stability of the optical splitter during use.

[0051] The specific implementation of this embodiment is as follows: when connecting the optical fiber body 103 line with the PD connector 107, one of the shells 2108 is put on the PD connector 107, and the rotating sleeve 2101 is pulled to move it out of the limiting ring 2116, so that the rotating sleeve 2101 can rotate, and the rotating sleeve 2101 drives the winding rod 2111 to rotate, so that the winding wheel 2112 on the winding rod 2111 can reel the pull rope 2105. At the same time, under the action of the fixed pulley 2107, the pull rope 2105 can stably pull the short plate 2104, so that the anti-bending plate 2103 can move, and the first N-pole magnet 2110 can move to push the telescopic rod 2109, so that the telescopic rod 2109 can be shortened. When the take-up rod 2111 rotates, the gear 2201 rotates to drive the tooth plate 2202 to move, so that the tooth plate 2202 is close to the anti-bending plate 2103 and moves in the L-shaped limit frame 2204 through the T-shaped guide rod 2206, thereby ensuring the stability of the movement of the tooth plate 2202. When the tooth plate 2202 moves, the first spring 2203 is squeezed to make it shrink. At the same time, the short rod 2205 is inserted into the circular hole 2207. After the rotation is completed, the rotating sleeve 2101 is pushed to move it into the limit ring 2116 again. The rotating sleeve 2101 is limited by the limit groove 2117, thereby preventing the take-up rod 2111 from rotating, and multiple optical fiber bodies 103 are moved. After the line is connected to the PD connector 107, the rotating sleeve 2101 is pulled out to release the limit on the winding rod 2111. Under the mutual repulsion between the second N-pole magnet 2114 and the first N-pole magnet 2110, the first N-pole magnet 2110 can be moved away from the second N-pole magnet 2114, thereby driving the telescopic rod 2109 to extend, so that the anti-bending plate 2103 is close to the multiple lines of the optical fiber body 103 and contacts them. At the same time, under the action of the S-pole magnet 2113, the first N-pole magnet 2110 can be attracted. The attraction between the S-pole magnet 2113 and the first N-pole magnet 2110 is smaller than the repulsion between the first N-pole magnet 2110 and the second N-pole magnet 2114, so it will not affect the movement of the first N-pole magnet 2110. After the N-pole magnet 2110 moves to a certain position, the first N-pole magnet 2110 will not move further due to the attraction of the S-pole magnet 2113, thereby maintaining a suspended state, allowing the anti-bending plate 2103 to be in a suspended state, thereby supporting and limiting the multiple lines of the optical fiber body 103, thereby ensuring the suspension of the lines of the optical fiber body 103, preventing the multiple lines of the optical fiber body 103 from bending, ensuring the horizontal and vertical state of the optical fiber body 103, and improving the effect of optical signal transmission. At the same time, under the action of the first spring 2203, the tooth plate 2202 can be pushed to reset the tooth plate 2202, so that the tooth plate 2202 contacts one side of the optical fiber body 103, applying a slight thrust, so that the multiple lines of the optical fiber body 103 can be straightened.This further ensures the straightness of the optical fiber body 103, ensures the propagation of the optical signal, prevents interference with the optical signal, ensures stability during use, and improves integration.

[0052] Example 2: Please refer to Figures 1-17 The present invention provides a technical solution: an N-channel fiber Bragg grating sensing splitter coupler. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0053] As a further limitation of the present invention, a limiting mechanism 3 is provided on one side of the anti-bending unit 21;

[0054] The limiting mechanism 3 includes two arc limit plates 301, and the arc limit plates 301 are arranged on one side of the anti-bending plate 2103. An installation groove 304 is opened on one side of the anti-bending plate 2103. By setting the arc limit plates 301, multiple lines of the optical fiber body 103 can be contacted, thereby limiting the multiple lines of the optical fiber body 103, effectively preventing the optical fiber from bending, thereby ensuring the efficiency of the optical fiber body 103 in transmitting optical signals, preventing interference with optical signals, and ensuring stability during use.

[0055] The inner cavity of the mounting groove 304 is fixedly connected to the second spring 303 , one end of the second spring 303 is fixedly connected to the moving plate 305 , and one end of the moving plate 305 is fixedly connected to one side of the arc limiting plate 301 .

[0056] The other end of the movable plate 305 is slidably connected to the inner cavity of the mounting groove 304 , and a semicircular block 302 is fixedly connected to one side of the movable plate 305 , and an extrusion block 306 is fixedly connected to the surface of the winding rod 2111 , and the extrusion block 306 is used in conjunction with the semicircular block 302 .

[0057] By setting up the limiting mechanism 3, the purpose of further ensuring that the optical fiber line connection is prevented from bending can be achieved. After the optical fiber line is connected to the connector, it can effectively contact both sides of the multiple lines at the optical fiber connection, limit the multiple lines at the optical fiber line connection, and effectively prevent the lateral bending of the multiple lines at the optical fiber connection, ensuring that the optical fiber line connection is always in a straight line state, so that it can better transmit the optical signal, thereby improving the effect of optical signal transmission.

[0058] The specific implementation of this embodiment is as follows: when the reeling rod 2111 rotates to move the two anti-bending plates 2103 away from each other, the squeezing block 306 rotates along with the reeling rod 2111, thereby moving away from the semicircular block 302, so that it does not apply squeezing force to the semicircular block 302. Under the action of the second spring 303, the movable plate 305 can be pushed, so that the movable plate 305 drives the arc limit plate 301 to move, so that the two arc limit plates 301 move away from each other. After the optical fiber body 103 is connected to the PD connector 107, when the reeling rod 2111 rotates, the squeezing block 306 Move back, so that the semicircular block 302 can be squeezed, allowing the movable plate 305 to move, thereby driving the arc limit plate 301 to move, allowing the arc limit plates 301 to approach each other, so that the arc limit plates 301 are in contact with multiple lines at the connection of the optical fiber body 103, thereby limiting the multiple lines of the optical fiber body 103, effectively preventing the multiple lines of the optical fiber body 103 from lateral bending, ensuring the horizontal verticality of the optical fiber body 103, thereby ensuring the propagation of the optical signal, effectively preventing interference with the optical signal, and improving the stability of the optical signal during use.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An N-way fiber Bragg grating sensing splitter coupler, comprising an optical splitter body (1), characterized in that: The optical splitter body (1) comprises a waveguide substrate (101), a cover plate (102) is fixedly connected to the surface of the waveguide substrate (101), an N+1 channel optical fiber array (104) and an N channel optical fiber array (105) are respectively provided on the surface of the waveguide substrate (101), a fiber grating sensor (106) is provided on one side of the waveguide substrate (101), an optical fiber body (103) is provided on the other side of the waveguide substrate (101), one end of the optical fiber body (103) is fixedly connected to a PD connector (107), a stabilizing mechanism (2) is provided on the surface of the PD connector (107), and a COM waveguide (108), a 2×1Y bifurcated waveguide (109) and a waveguide optical path (110) are respectively provided inside the waveguide substrate (101); The stabilizing mechanism (2) comprises an anti-bending unit (21), and the anti-bending unit (21) is arranged on the surface of the PD connector (107); The stabilizing mechanism (2) further comprises a pushing unit (22), wherein the pushing unit (22) is arranged on one side of the anti-bending unit (21), and the pushing unit (22) is used in conjunction with the anti-bending unit (21); A limiting mechanism (3) is provided on one side of the anti-bending unit (21).

2. The N-channel fiber Bragg grating sensing splitter coupler according to claim 1, characterized in that: The anti-bending unit (21) comprises two shells (2108), the shells (2108) being arranged on the surface of the PD connector (107), and the two shells (2108) being clamped together, wherein the inner cavity of one of the shells (2108) is fixedly connected to two telescopic rods (2109), the surfaces of the telescopic rods (2109) being fixedly sleeved with a circular plate (2102) and a second N-pole magnet (2114), the telescopic ends of the telescopic rods (2109) being fixedly connected to a first N-pole magnet (2110), the surface of the circular plate (2102) being fixedly connected to four groups of S-pole magnets (2113), and one side of the first N-pole magnet (2110) being fixedly connected to an anti-bending plate (2103).

3. The N-channel fiber Bragg grating sensing splitter coupler according to claim 2, characterized in that: The inner cavity of one of the shells (2108) is rotatably connected to two winding rods (2111), the surface of the winding rod (2111) is fixedly sleeved with two winding wheels (2112), the surface of the winding wheel (2112) is wound with a pull rope (2105), one end of the pull rope (2105) is fixedly connected to the surface of the winding wheel (2112), the other end of the pull rope (2105) is fixedly connected to a short plate (2104), one end of the short plate (2104) is fixedly connected to one side of the anti-bending plate (2103), the inner cavity of one of the shells (2108) is fixedly connected to four connecting rods (2106), the rotating sleeve of the connecting rod (2106) is provided with a fixed pulley (2107), and the fixed pulley (2107) is used in conjunction with the pull rope (2105).

4. The N-channel fiber Bragg grating sensing splitter coupler according to claim 3, characterized in that: One end of the winding rod (2111) passes through one side of one of the outer shells (2108), and the surface of the winding rod (2111) is provided with a rotating sleeve (2101), and the surface of the winding rod (2111) is provided with a stabilizing groove (2115) used in conjunction with the rotating sleeve (2101), and the surface of the rotating sleeve (2101) is provided with a limiting ring (2116), and one side of the limiting ring (2116) is fixedly connected to the surface of one of the outer shells (2108), and the inner cavity of the limiting ring (2116) is provided with a limiting groove (2117) used in conjunction with the rotating sleeve (2101).

5. The N-channel fiber Bragg grating sensing splitter coupler according to claim 3, characterized in that: The pushing unit (22) comprises two U-shaped rods (2208), one side of the U-shaped rod (2208) is fixedly connected to the inner cavity of one of the outer shells (2108), one end of the U-shaped rod (2208) is fixedly connected to two L-shaped limit frames (2204), and the surface of the winding rod (2111) is fixedly sleeved with two gears (2201), and the surface of the gear (2201) is meshed with a tooth plate (2202).

6. The N-channel fiber Bragg grating sensing splitter coupler according to claim 5, characterized in that: A T-shaped guide rod (2206) is fixedly connected to one side of the tooth plate (2202), and one end of the T-shaped guide rod (2206) passes through one side of the L-shaped limit frame (2204) and is slidably connected to the inner cavity of the L-shaped limit frame (2204).

7. The N-channel fiber Bragg grating sensing splitter coupler according to claim 6, characterized in that: A short rod (2205) is fixedly connected to the surface of the L-shaped limit frame (2204), and a first spring (2203) is movably sleeved on the surface of the short rod (2205). The two ends of the first spring (2203) are respectively fixedly connected to the surfaces of the L-shaped limit frame (2204) and the tooth plate (2202). A circular hole (2207) for cooperating with the short rod (2205) is provided inside the tooth plate (2202).

8. The N-channel fiber Bragg grating sensing splitter coupler according to claim 3, characterized in that: The limiting mechanism (3) comprises two arc limiting plates (301), wherein the arc limiting plates (301) are arranged on one side of the anti-bending plate (2103), and a mounting groove (304) is provided on one side of the anti-bending plate (2103).

9. The N-channel fiber Bragg grating sensing splitter coupler according to claim 8, characterized in that: A second spring (303) is fixedly connected to the inner cavity of the mounting groove (304), one end of the second spring (303) is fixedly connected to a movable plate (305), and one end of the movable plate (305) is fixedly connected to one side of the arc limiting plate (301).

10. The N-channel fiber Bragg grating sensing splitter coupler according to claim 9, characterized in that: The other end of the movable plate (305) is slidably connected to the inner cavity of the mounting groove (304), and a semicircular block (302) is fixedly connected to one side of the movable plate (305). An extrusion block (306) is fixedly connected to the surface of the winding rod (2111), and the extrusion block (306) is used in conjunction with the semicircular block (302).

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