Polarization maintaining optical fiber collimator

Abstract

The utility model discloses a polarization-maintaining optical fiber collimator, and relates to the field of optical fiber communication devices, the polarization-maintaining optical fiber collimator comprises a protection shell, a plastic clamping seat is fixedly installed at the bottom of the inner wall of the protection shell, and a polarization-maintaining optical fiber collimator body is detachably connected to the inner wall of the plastic clamping seat; the polarization-maintaining optical fiber collimator comprises a polarization-maintaining optical fiber collimator body, the two ends of the polarization-maintaining optical fiber collimator body are detachably connected with polarization-maintaining optical fiber bodies, a sealing dustproof mechanism is arranged on the protection shell, and a temperature protection mechanism is arranged on the protection shell. According to the invention, physical protection can be carried out on the polarization-maintaining optical fiber collimator main body on the plastic clamping seat, the problems of collision and extrusion damage are avoided, meanwhile, the joint of the cover plate and the protection shell can be sealed by means of the rubber frame, and the joint of the outer wall of the polarization-maintaining optical fiber main body and the fixing ring can be sealed by means of the rubber ring. The sealing dustproof protection function on the polarization maintaining optical fiber collimator main body is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber communication devices, in particular to a polarization maintaining fiber collimator. BACKGROUND

[0002] A polarization maintaining fiber collimator is a special optical fiber device used to maintain the polarization state of optical signals, composed of a polarization maintaining fiber and a micro lens. Its core function is to convert the Gaussian mode light beam transmitted in the optical fiber into a collimated light beam, and to minimize polarization state distortion and insertion loss in free space transmission. This device is widely used in optical fiber sensing, quantum communication, laser interference and precision measurement fields, and is particularly important in scenarios requiring polarization state stability. By optimizing the beam divergence angle and mode matching, efficient and stable transmission of optical signals in complex optical systems is ensured.

[0003] The traditional polarization maintaining fiber collimator does not have a sealing and dustproof function. When installed and used, dust in the air can easily enter from the gap and then adhere to the polarization maintaining fiber collimator. The adhesion of dust can affect the quality of light transmission and the stability of the polarization maintaining fiber collimator. CONTENT OF THE INVENTION

[0004] In order to solve the problem that dust easily adheres to the polarization maintaining fiber collimator during use, affecting its stable operation, the present application provides a polarization maintaining fiber collimator.

[0005] The polarization maintaining fiber collimator provided by the present application adopts the following technical scheme:

[0006] The polarization maintaining fiber collimator comprises a protective shell, a plastic holder is fixedly installed on the bottom of the inner wall of the protective shell, a polarization maintaining fiber collimator body is detachably connected to the inner wall of the plastic holder, polarization maintaining fiber bodies are detachably connected to both ends of the polarization maintaining fiber collimator body, a sealing and dustproof mechanism is arranged on the protective shell, and a temperature protection mechanism is arranged on the protective shell. The sealing and dustproof mechanism comprises a fixed ring, the number of fixed rings is two, the two fixed rings are fixedly installed on the two sides of the protective shell, a rubber ring is fixedly connected to the side of the fixed ring away from the protective shell, and a limiting arm is fixedly installed on the side of the fixed ring away from the protective shell.

[0007] Preferably, a pressing ring is slidably connected to the outer wall of the limiting arm, a movable sleeve is fixedly connected to the side of the pressing ring away from the fixed ring, the movable sleeve is slidably connected to the outer wall of the limiting arm, a screw is threadedly connected to the outer wall of the movable sleeve, and the sealing and dustproof mechanism further comprises a support kit and a cover plate.

[0008] Preferably, the cover plate is movably inserted on the top of the protective shell, a protruding block is fixedly installed on the top of the cover plate, and a nylon belt is fixedly connected to the outer wall of the protruding block.

[0009] Preferably, a second magnetic block is fixedly installed on the inner wall of the cover plate, the bottom of the second magnetic block is magnetically connected to the top of the first magnetic block, a rubber frame is fixedly sleeved on the outer wall of the cover plate, and the outer wall of the rubber frame is movably connected to the inner wall of the protective shell.

[0010] Preferably, the temperature protection mechanism comprises a first shunt pipe and a second shunt pipe, the first shunt pipe is fixedly installed on the front face of the protective shell, the second shunt pipe is fixedly installed on the back face of the protective shell, the first shunt pipe and the second shunt pipe are fixedly connected with branch pipes on the adjacent sides, and a copper ring pipe is fixedly connected between the adjacent ends of the two groups of branch pipes.

[0011] Preferably, an internally threaded pipe opening is fixedly connected to the front face of the first shunt pipe, and a pipe opening is fixedly connected to the back face of the second shunt pipe.

[0012] Preferably, a fixed block is fixedly installed on the back face of the pipe opening, a rubber plate is fixedly connected to the bottom of the fixed block, and the front face of the rubber plate is movably connected to the back face of the pipe opening.

[0013] To sum up, the present application has at least one of the following beneficial technical effects:

[0014] Through the design of the sealing and dustproof mechanism, the polarization maintaining fiber collimator body on the plastic card seat can be physically protected by the cooperation of the protective shell and the cover plate, avoiding collision and extrusion damage. Meanwhile, the connection between the cover plate and the protective shell can be sealed by the rubber frame, and the connection between the outer wall of the polarization maintaining fiber body and the fixing ring can be sealed by the rubber ring, thereby realizing the function of sealing and dustproof protection of the polarization maintaining fiber collimator body, avoiding the problem that dust in the air adheres to the polarization maintaining fiber collimator body, maintaining the quality of light transmission, and ensuring the stability of the polarization maintaining fiber collimator body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the polarization maintaining fiber collimator of the embodiment of the present application.

[0016] Fig. 2 It is a schematic view mainly embodying the cover plate structure of the embodiment of the present application.

[0017] Fig. 3 It is a schematic view mainly embodying the fixing ring structure of the embodiment of the present application.

[0018] Fig. 4A schematic view mainly embodying a temperature protection mechanism structure of the embodiment of the present application;

[0019] Fig. 5 A schematic view mainly embodying a copper ring pipe structure of the embodiment of the present application;

[0020] Fig. 6 A schematic view mainly embodying a pipe opening structure of the embodiment of the present application.

[0021] The figure mark: 1, the protection shell; 11, plastic card seat; 12, polarization maintaining optical fiber collimator main body; 13, polarization maintaining optical fiber main body; 2, sealing dustproof mechanism; 21, support set; 22, No. 1 magnetic block; 23, cover plate; 231, No. 2 magnetic block; 232, rubber frame; 24, convex block; 25, nylon belt; 26, fixed ring; 261, rubber ring; 262, limiting arm; 263, pressing ring; 264, movable sleeve; 265, bolt; 3, temperature protection mechanism; 31, No. 1 shunt pipe; 32, branch pipe; 33, copper ring pipe; 331, heat exchange fin; 34, No. 2 shunt pipe; 35, inner threaded pipe opening; 36, pipe opening; 361, fixed block; 362, rubber plate. DETAILED DESCRIPTION

[0022] The following will be combined with the Figs. 1-6 The present application is further described in detail.

[0023] The embodiment of the present application discloses a polarization maintaining optical fiber collimator.

[0024] Embodiment 1

[0025] Referring to Figs. 1-6 , the polarization maintaining optical fiber collimator comprises a protection shell 1, a plastic card seat 11 is fixedly installed on the bottom of the inner wall of the protection shell 1, a polarization maintaining optical fiber collimator main body 12 is detachably connected on the inner wall of the plastic card seat 11, polarization maintaining optical fiber main bodies 13 are detachably connected at both ends of the polarization maintaining optical fiber collimator main body 12, a sealing dustproof mechanism 2 is arranged on the protection shell 1, and a temperature protection mechanism 3 is arranged on the protection shell 1.

[0026] Referring to Figs. 1-3The sealing and dustproof mechanism 2 comprises two fixed rings 26, which are fixedly installed on the two sides of the protective shell 1 respectively, the side of the fixed ring 26 away from the protective shell 1 is fixedly connected with a rubber ring 261, the side of the fixed ring 26 away from the protective shell 1 is fixedly installed with a limiting arm 262, the outer wall of the limiting arm 262 is slidably connected with a pressing ring 263, the side of the pressing ring 263 away from the fixed ring 26 is fixedly connected with a movable sleeve 264, the movable sleeve 264 is slidably connected on the outer wall of the limiting arm 262, the outer wall of the movable sleeve 264 is threadedly connected with a bolt 265, the sealing and dustproof mechanism 2 further comprises a support set 21 and a cover plate 23, the support set 21 is fixedly installed on the inner wall of the protective shell 1, the inner wall of the support set 21 is fixedly installed with a first magnetic block 22, the cover plate 23 is movably inserted on the top of the protective shell 1, the top of the cover plate 23 is fixedly installed with a protruding block 24, the outer wall of the protruding block 24 is fixedly connected with a nylon belt 25, the inner wall of the cover plate 23 is fixedly installed with a second magnetic block 231, the bottom of the second magnetic block 231 is magnetically connected with the top of the first magnetic block 22, the outer wall of the cover plate 23 is fixedly sleeved with a rubber frame 232, the outer wall of the rubber frame 232 is movably connected with the inner wall of the protective shell 1, in the installation and use, first, the polarization maintaining optical fiber collimator body 12 is inserted into the inner wall of the plastic card seat 11, then the polarization maintaining optical fiber body 13 is introduced into the inside of the protective shell 1 through the fixed ring 26, and then the polarization maintaining optical fiber body 13 is inserted into the end of the polarization maintaining optical fiber collimator body 12, then the cover plate 23 is inserted on the top of the protective shell 1, after the cover plate 23 is inserted on the top of the protective shell 1, the first magnetic block 22 magnetically attracts the second magnetic block 231 to lock the position of the cover plate 23, at this time, the connection between the cover plate 23 and the protective shell 1 can be sealed by the rubber frame 232, after the polarization maintaining optical fiber body 13 passes through the fixed ring 26, the pressing ring 263 is pushed on the outer wall of the limiting arm 262 towards the fixed ring 26, and the rubber ring 261 is extruded at the same time, so that the inner wall of the rubber ring 261 is tightly attached to the outer wall of the polarization maintaining optical fiber body 13, then the bolt 265 is tightened to position the movable sleeve 264 on the outer wall of the limiting arm 262, and the connection between the polarization maintaining optical fiber body 13 and the fixed ring 26 is sealed by the rubber ring 261, thereby realizing the function of sealing and dustproof protection of the polarization maintaining optical fiber collimator body 12, and the polarization maintaining optical fiber collimator body 12 on the plastic card seat 11 can be physically protected from collision and extrusion damage, and the cover plate 23 on the top of the protective shell 1 can be easily pulled out by the nylon belt 25.

[0027] Referring to Figs. 4-6The temperature protection mechanism 3 comprises a first shunt pipe 31 and a second shunt pipe 34, the first shunt pipe 31 is fixedly installed on the front face of the protection shell 1, the second shunt pipe 34 is fixedly installed on the back face of the protection shell 1, the adjacent side of the first shunt pipe 31 and the second shunt pipe 34 is fixedly connected with a branch pipe 32, the adjacent end of the two groups of branch pipes 32 is fixedly connected with a copper ring pipe 33, the inner surface of the copper ring pipe 33 is fixedly connected with a heat exchange fin 331, the front face of the first shunt pipe 31 is fixedly connected with an internally threaded pipe mouth 35, the back face of the second shunt pipe 34 is fixedly connected with a pipe mouth 36, the back face of the pipe mouth 36 is fixedly installed with a fixed block 361, the bottom of the fixed block 361 is fixedly connected with a rubber plate 362, the front face of the rubber plate 362 is movably connected with the back face of the pipe mouth 36, the application equipment of the polarization maintaining optical fiber collimator body 12 is usually equipped with a cooling fan, for example, a fiber laser, the cooling fan is an important part of the fiber laser cooling system, which helps the laser to dissipate heat through air cooling, when the structure is used, a branch of the cooling fan outlet pipe is connected at the internally threaded pipe mouth 35 in advance, and the cooling air is introduced into the inner cavity of the first shunt pipe 31, the air passes through the inner cavity of the copper ring pipe 33 and then is discharged from the pipe mouth 36, in the process of collimating the light beam by the polarization maintaining optical fiber collimator body 12, heat is generated due to the transmission and conversion of light, and the air exchanges heat with the heat emitted by the polarization maintaining optical fiber collimator body 12 through the copper ring pipe 33, so as to realize the function of dust-free heat dissipation of the polarization maintaining optical fiber collimator body 12, prolong the service life of the polarization maintaining optical fiber collimator body 12, through the design of the heat exchange fin 331, the overall heat exchange effect of the copper ring pipe 33 can be improved, when the air is discharged from the pipe mouth 36, the air thrust can push the rubber plate 362 to produce elastic deformation, so as to promote the back face opening of the pipe mouth 36 to discharge air, when there is no air, the thrust disappears, and the rubber plate 362 resets to promote the back face of the pipe mouth 36 to close, avoiding the problem that dust in the air easily enters the inside of the pipe mouth 36 during the idle process.

[0028] The implementation principle of the polarization maintaining optical fiber collimator is as follows: when being installed and used, the protective shell 1 is installed on the equipment to be used, the cover plate 23 is pulled out from the top of the protective shell 1, the polarization maintaining optical fiber collimator body 12 is first inserted into the inner wall of the plastic card seat 11, the polarization maintaining optical fiber collimator body 12 is adjusted to the middle of the copper ring tube 33, then the polarization maintaining optical fiber body 13 is introduced into the inside of the protective shell 1 through the fixing ring 26, the polarization maintaining optical fiber body 13 is inserted into the end of the polarization maintaining optical fiber collimator body 12, then the cover plate 23 is inserted into the top of the protective shell 1, after the cover plate 23 is inserted into the top of the protective shell 1, the first magnetic block 22 magnetically attracts the second magnetic block 231 to lock the position of the cover plate 23, at this time, the rubber frame 232 can be used to seal the connection between the cover plate 23 and the protective shell 1, after the polarization maintaining optical fiber body 13 passes through the fixing ring 26, the pressing ring 263 is pushed to the fixing ring 26 on the outer wall of the limiting arm 262, the rubber ring 261 is extruded at the same time, the inner wall of the rubber ring 261 is tightly attached to the outer wall of the polarization maintaining optical fiber body 13, then the bolt 265 is tightened, the movable sleeve 264 is positioned on the outer wall of the limiting arm 262, the rubber ring 261 is used to seal the connection between the outer wall of the polarization maintaining optical fiber body 13 and the fixing ring 26, the function of sealing and dustproof protection of the polarization maintaining optical fiber collimator body 12 is realized, the polarization maintaining optical fiber collimator body 12 can then work normally to convert the optical signal in the optical fiber into parallel light beams.

[0029] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A polarization maintaining fiber collimator characterized by: The application relates to a protective shell (1), a plastic card seat (11) is fixedly arranged on the bottom of the inner wall of the protective shell (1), a polarization maintaining fiber collimator body (12) is detachably connected to the inner wall of the plastic card seat (11), polarization maintaining fiber bodies (13) are detachably connected to the two ends of the polarization maintaining fiber collimator body (12), a sealing dustproof mechanism (2) is arranged on the protective shell (1), a temperature protection mechanism (3) is arranged on the protective shell (1), the sealing dustproof mechanism (2) comprises fixing rings (26), the number of the fixing rings (26) is two, the two fixing rings (26) are fixedly arranged on the two sides of the protective shell (1) respectively, rubber rings (261) are fixedly connected to the sides, away from the protective shell (1), of the fixing rings (26), and limiting arms (262) are fixedly arranged on the sides, away from the protective shell (1), of the fixing rings (26).

2. The polarization-maintaining fiber collimator according to claim 1, characterized in that: A pressing ring (263) is slidably connected to the outer wall of the limiting arm (262), a movable sleeve (264) is fixedly connected to the side, away from the fixing ring (26), of the pressing ring (263), the movable sleeve (264) is slidably connected to the outer wall of the limiting arm (262), a bolt (265) is threadedly connected to the outer wall of the movable sleeve (264), the sealing dustproof mechanism (2) further comprises a supporting sleeve (21) and a cover plate (23), the supporting sleeve (21) is fixedly arranged on the inner wall of the protective shell (1), and a first magnetic block (22) is fixedly arranged on the inner wall of the supporting sleeve (21).

3. The polarization-maintaining fiber collimator according to claim 2, characterized in that: The cover plate (23) is movably inserted into the top of the protective shell (1), a convex block (24) is fixedly arranged on the top of the cover plate (23), and a nylon belt (25) is fixedly connected to the outer wall of the convex block (24).

4. The polarization-maintaining fiber collimator according to claim 3, characterized in that: A second magnetic block (231) is fixedly arranged on the inner wall of the cover plate (23), the bottom of the second magnetic block (231) is magnetically connected to the top of the first magnetic block (22), a rubber frame (232) is fixedly sleeved on the outer wall of the cover plate (23), and the outer wall of the rubber frame (232) is movably connected to the inner wall of the protective shell (1).

5. The polarization-maintaining fiber collimator according to claim 1, characterized in that: The temperature protection mechanism (3) comprises a first shunt pipe (31) and a second shunt pipe (34), the first shunt pipe (31) is fixedly arranged on the front face of the protective shell (1), the second shunt pipe (34) is fixedly arranged on the back face of the protective shell (1), shunt pipes (32) are fixedly connected to the adjacent sides of the first shunt pipe (31) and the second shunt pipe (34), a copper ring pipe (33) is fixedly connected between the adjacent ends of the two groups of shunt pipes (32), and heat exchange fins (331) are fixedly arranged on the inner surface of the copper ring pipe (33).

6. The polarization-maintaining fiber collimator according to claim 5, characterized in that: An internally-threaded pipe mouth (35) is fixedly connected to the front face of the first shunt pipe (31), and a pipe mouth (36) is fixedly connected to the back face of the second shunt pipe (34).

7. The polarization-maintaining fiber collimator according to claim 6, characterized in that: The back of the pipe orifice (36) is fixedly provided with a fixed block (361), and the bottom of the fixed block (361) is fixedly connected with a rubber plate (362), and the front surface of the rubber plate (362) is movably connected with the back of the pipe orifice (36).

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