CN215181205U - Dial wheel type optical fiber rotary polarization regulator - Google Patents
Dial wheel type optical fiber rotary polarization regulator Download PDFInfo
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- CN215181205U CN215181205U CN202121724120.8U CN202121724120U CN215181205U CN 215181205 U CN215181205 U CN 215181205U CN 202121724120 U CN202121724120 U CN 202121724120U CN 215181205 U CN215181205 U CN 215181205U
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- dial wheel
- fiber fixing
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Abstract
A dial wheel type optical fiber rotation polarization regulator relates to the technical field of optical fiber regulation. A groove is formed in a rotating shaft of the device, first optical fiber fixing grooves are formed in two ends of the rotating shaft, and optical fiber pressing blocks are fixedly arranged in the groove; the shifting wheel is fixedly connected with the rotating shaft; the two ends of the rotating shaft are respectively connected with the optical fiber fixing support in a rotating mode, a second optical fiber fixing groove is formed in the optical fiber fixing support, and the notch of the second optical fiber fixing groove corresponds to the notch of the first optical fiber fixing groove in position. The device has simple structure, places the single-mode optical fiber in the regulator, and utilizes the dial wheel to drive the rotating shaft to rotate to cause the stress anisotropy distribution in the cross section of the optical fiber, thereby causing the change of the polarization state of the guided wave and realizing the control of the polarization state.
Description
Technical Field
The utility model relates to an optical fiber adjusting technical field especially relates to a dial rotatory polarization regulator of wheeled optic fibre.
Background
The asymmetry of the vibration direction of light with respect to the propagation direction is called polarization, which is the most obvious sign that a transverse wave is distinguished from other longitudinal waves, and only the transverse wave has polarization. In an optical fiber coherent communication system, expected heterodyne reception high sensitivity can be obtained only when the polarization states of a signal optical field and a local oscillator optical field are consistent. However, due to the birefringence of the single-mode fiber, the polarization state of the output light of the fiber changes with various factors such as temperature, pressure, bending and the like, which causes the polarization state mismatch between the signal light and the local oscillation light, thereby affecting the sensitivity of the receiver. In addition, in a coherent measurement system using a polarization maintaining fiber as a sensing fiber, the polarization direction of incident light is often required to coincide with one of the principal axes of birefringence of the fiber to meet the measurement requirement, such as a fiber optic gyroscope, a distributed sensing measurement using the refractive property of the fiber, and the like. Therefore, polarization control is an extremely important issue in coherent fiber optic communication systems, as well as other coherent measurement systems.
SUMMERY OF THE UTILITY MODEL
For the utility model aims to solve the technical problem that a dial wheel type rotating optical fiber polarization regulator with simple manufacture and convenient use is provided. The utility model adopts the following technical scheme:
a dial wheel type optical fiber rotary polarization regulator comprises an optical fiber fixing support, a rotating shaft, a first optical fiber pressing block and a dial wheel; a groove is formed in the rotating shaft, first optical fiber fixing grooves are formed in two ends of the rotating shaft, and the first optical fiber pressing block is fixedly installed in the groove; the shifting wheel is fixedly connected with the rotating shaft; the two ends of the rotating shaft are respectively connected with the optical fiber fixing support in a rotating mode, a second optical fiber fixing groove is formed in the optical fiber fixing support, and the notch of the second optical fiber fixing groove and the notch of the first optical fiber fixing groove are located on the same horizontal line.
Specifically, the second optical fiber fixing groove is a V-shaped groove. The V-shaped groove structure enables the optical fiber to be stably fixed in the second optical fiber fixing groove.
Specifically, optic fibre fixing support includes fixed part and rotation portion, it has the pivot chamber to open in the rotation portion, pivot fixed mounting in the pivot intracavity, the fixed part is equipped with first boss, is provided with on the first boss second optic fibre fixed slot.
Specifically, still include second optic fibre briquetting, second optic fibre briquetting fixed mounting is on first boss, be equipped with the rubber buffer in the second optic fibre briquetting, the rubber buffer bottom with second optic fibre fixed slot contact.
Specifically, the rotating part is provided with a second boss, the top surface of the second boss is provided with a through groove, and the through groove is in through connection with the rotating shaft cavity. The through groove is in through connection with the rotating shaft cavity, so that the optical fiber can be conveniently and directly placed in the optical fiber fixing support through the through groove.
Specifically, the optical fiber fixing support is provided with a rotating shaft hole fixing hole in the side wall, and is provided with a hand screw which is fixedly arranged in the rotating shaft hole fixing hole. The position of the rotating shaft can be manually fixed by the hand-screwed screw, so that the operation is convenient.
Specifically, a clamping groove is formed in the shifting wheel, the top surface of the first optical fiber pressing block is fixedly connected with the clamping groove, the bottom surface of the optical fiber pressing block is fixedly connected with the groove, and a rubber plug is arranged in the optical fiber pressing block. Because first optic fibre briquetting is used for fixed optic fibre in the pivot, uses the rubber buffer can avoid first optic fibre briquetting to contact with the recess bottom surface excessively and leads to the condition that optic fibre was crushed.
Specifically, fixed mounting has the gag lever post on the optic fibre fixing support lateral wall, the gag lever post set up in under the pivot. The rotating amplitude of the rotating shaft can be effectively controlled through the limiting rod, and the optical fiber is prevented from being damaged by the rotating shaft.
To sum up, the utility model discloses the device has following advantage:
1) the device has a simple structure, the single-mode optical fiber is arranged in the regulator, the rotating shaft is driven by the dial wheel to rotate to cause the stress anisotropy distribution in the cross section of the optical fiber, and the refractive index distribution of the optical fiber material is changed due to the photoelastic effect, so that additional stress birefringence is generated, the change of the polarization state of guided waves is caused, and the control of the polarization state is realized.
2) The device has a simple structure, is different from the rotation mode of the existing optical fiber polarization regulator, adopts the dial wheel type, is convenient to operate, can be applied to systems which need light polarization, such as optical fiber coherent communication, coherent measurement and the like, and can realize real-time debugging because the polarized light is transmitted in the optical fiber without space coupling.
Drawings
FIG. 1 is a schematic diagram of a dial wheel type optical fiber rotary polarization regulator;
FIG. 2 is a schematic diagram of a second optical fiber press block in the dial wheel type optical fiber rotary polarization regulator;
FIG. 3 is a schematic diagram of a partial structure of a dial wheel type optical fiber rotary polarization regulator 2;
FIG. 4 is a schematic structural diagram of an optical fiber fixing support in a dial wheel type optical fiber rotary polarization regulator;
FIG. 5 is a schematic structural diagram of a rotating shaft in a dial wheel type optical fiber rotary polarization regulator;
reference numerals: 1, a screw; 2 second optical fiber pressing block; 3, fixing the optical fiber support; 4, pressing a screw by using an optical fiber; 5, a thumb wheel screw; 6, a thumb wheel; 7, a first optical fiber pressing block; 8, a rotating shaft; 9, screwing a screw by hand; 10, limiting rods; 11 a through groove; 12V-shaped grooves; 13 rubber plug; 14 grooves; 15 a first fiber-securing slot; 16 a shaft cavity; 17 groove screw holes; 18 a second fiber press block screw hole; 19 plugging holes with rubber; 20 card slots; 21 a first boss; 22 second boss.
Detailed Description
The present invention will be further described with reference to fig. 1 to 5.
A dial wheel type optical fiber rotation polarization regulator comprises an optical fiber fixing support 3, a rotating shaft 8, a first optical fiber pressing block 7 and a dial wheel 6. Set up the recess in the middle of the pivot 8 and the first optic fibre fixed slot has been seted up at 8 both ends of pivot, seted up fixed screw hole on the first optic fibre briquetting 7, and correspond in the recess bottom and be provided with fixed screw hole, pass fixed screw hole through the screw and with first optic fibre briquetting 7 fixed mounting on the recess. In order to avoid that the first optical fiber pressing block 7 is excessively contacted with the bottom surface of the groove to cause the optical fiber to be crushed, a rubber plug 13 buffer device is arranged between the groove and the first optical fiber pressing block 7 to reduce the condition of crushing damage to the optical fiber. A rubber plug fixing hole is formed in the first optical fiber pressing block 7, the rubber plug 13 is fixedly installed in the rubber plug fixing hole, and the bottom of the rubber plug abuts against the bottom surface of the groove. A rectangular clamping groove is formed in the thumb wheel, and the first optical fiber pressing block 7 is fixedly connected with the clamping groove through an optical fiber pressing block screw 4. Two ends of the rotating shaft 8 are respectively connected with the optical fiber fixing support 3 in a rotating way. Wherein, optic fibre fixing support 3 includes fixed part and rotation portion, has seted up the pivot chamber in the rotation portion, and pivot 8 is installed in the pivot intracavity, and the fixed part is equipped with first boss, has seted up the second optic fibre fixed slot on the first boss, and second optic fibre fixed slot and pivot chamber intercommunication, in order to make that optic fibre can stabilize at second optic fibre fixed slot internal fixation, so the second optic fibre fixed slot sets up to V type groove 12 structure. When the rotating shaft 8 is connected with the optical fiber fixing support 3, the notch of the second optical fiber fixing groove of the first boss corresponds to the notch of the first optical fiber fixing groove of the rotating shaft 8. Fixedly mounted has second optic fibre briquetting 2 on the first boss, in order to avoid second optic fibre briquetting 2 excessively to contact with the mesa of first boss, leads to optic fibre to be crushed, so through set up rubber buffer between the mesa of first boss and second optic fibre briquetting 2, reduce the condition of crushing damage to optic fibre. Set up the rubber buffer fixed orifices in second optic fibre briquetting 2, rubber buffer fixed mounting is in the rubber buffer fixed orifices, and the rubber buffer bottom supports second optic fibre fixed slot top surface. The rotating part is provided with a second boss, and a through groove 11 is formed in the second boss for placing the optical fiber in the optical fiber fixing support 3 conveniently. The through groove 11 is communicated with the rotating shaft cavity. In order to fix the position of the rotating shaft 8, a rotating shaft hole fixing hole is formed in the side wall of the optical fiber fixing support 3, and a hand screw is configured on the optical fiber fixing support 3 and fixedly installed in the rotating shaft hole fixing hole. After the rotating shaft 8 of the dial wheel 6 is shifted to adjust the position of the rotating shaft 8, the hand-screwed screw is screwed down, so that the hand-screwed screw abuts against the rotating shaft 8, and the rotating shaft 8 is fixed. In order to prevent the optical fiber from being twisted and damaged due to over-rotation of the rotating shaft 8, a limiting rod 10 is fixedly mounted on the side wall of the optical fiber fixing support 3, and the limiting rod 10 is arranged right below the rotating shaft 8. When the thumb wheel 6 rotates to the limit position, the first optical fiber pressing block 7 is abutted by the limit rod 10 and cannot rotate.
When the device is used, the screw 1 is loosened by using an inner hexagonal wrench, the second optical fiber pressing block 2 fixed on the supports 3 at two sides can be taken down, the optical fiber pressing block screw 4 is loosened, the first optical fiber pressing block 7 fixed on the rotating shaft 8 can be taken down, bare fibers or optical fibers with 900 mu m sleeves are placed in a second optical fiber fixing groove below the support 3 through a notch of the support 3, then the screw 1 and the optical fiber pressing block screw 4 are screwed down, the second optical fiber pressing block 2 and the first optical fiber pressing block 7 are fixed, then the thumb wheel 6 can be pulled by fingers to adjust the rotating angle of the optical fibers until the required polarization state is reached, and at the moment, the hand screw 9 can be screwed down to fix the position of the rotating shaft 8.
As can be seen from the above description, the device has the following advantages:
1. the device has a simple structure, the single-mode optical fiber is arranged in the regulator, the rotating shaft is driven by the dial wheel to rotate to cause the stress anisotropy distribution in the cross section of the optical fiber, and the refractive index distribution of the optical fiber material is changed due to the photoelastic effect, so that additional stress birefringence is generated, the change of the polarization state of guided waves is caused, and the control of the polarization state is realized.
2. The device has a simple structure, is different from the rotation mode of the existing optical fiber polarization regulator, adopts the dial wheel type, is convenient to operate, can be applied to systems which need light polarization, such as optical fiber coherent communication, coherent measurement and the like, and can realize real-time debugging because the polarized light is transmitted in the optical fiber without space coupling.
It should be understood that the above detailed description of the present invention is only for illustrative purposes and is not limited to the technical solutions described in the embodiments of the present invention. It will be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (8)
1. A dial wheel type optical fiber rotary polarization regulator is characterized by comprising an optical fiber fixing support, a rotating shaft, a first optical fiber pressing block and a dial wheel; a groove is formed in the rotating shaft, first optical fiber fixing grooves are formed in two ends of the rotating shaft, and the first optical fiber pressing block is fixedly installed in the groove; the shifting wheel is fixedly connected with the rotating shaft; the two ends of the rotating shaft are respectively connected with the optical fiber fixing support in a rotating mode, a second optical fiber fixing groove is formed in the optical fiber fixing support, and the notch of the second optical fiber fixing groove and the notch of the first optical fiber fixing groove are located on the same horizontal line.
2. The dial wheel type optical fiber rotary polarization adjustor according to claim 1, wherein the second optical fiber fixing groove is a V-groove.
3. The dial wheel type optical fiber rotary polarization regulator according to claim 1, wherein the optical fiber fixing support comprises a fixing portion and a rotating portion, a rotating shaft cavity is formed in the rotating portion, the rotating shaft is fixedly installed in the rotating shaft cavity, the fixing portion is provided with a first boss, and the first boss is provided with the second optical fiber fixing groove.
4. The rotating polarization regulator of dial wheel type optical fiber according to claim 3, further comprising a second optical fiber pressing block, wherein the second optical fiber pressing block is fixedly installed on the first boss, a rubber plug is arranged in the second optical fiber pressing block, and the bottom of the rubber plug is in contact with the second optical fiber fixing groove.
5. The dial wheel type optical fiber rotary polarization regulator according to claim 3, wherein the rotating portion is provided with a second boss, a through groove is formed in a top surface of the second boss, and the through groove is in through connection with the rotating shaft cavity.
6. The dial wheel type optical fiber rotary polarization regulator according to claim 1, wherein a rotary shaft hole fixing hole is formed in a side wall of the optical fiber fixing support, and a hand screw is configured on the optical fiber fixing support and is fixedly installed in the rotary shaft hole fixing hole.
7. The dial wheel type optical fiber rotary polarization regulator according to claim 1, wherein the dial wheel is provided with a clamping groove, the top surface of the first optical fiber pressing block is fixedly connected with the clamping groove, the bottom surface of the optical fiber pressing block is fixedly connected with the groove, and a rubber plug is arranged in the optical fiber pressing block.
8. The dial wheel type optical fiber rotary polarization regulator according to claim 1, wherein a limiting rod is fixedly mounted on a side wall of the optical fiber fixing support, and the limiting rod is arranged right below the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121724120.8U CN215181205U (en) | 2021-07-27 | 2021-07-27 | Dial wheel type optical fiber rotary polarization regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121724120.8U CN215181205U (en) | 2021-07-27 | 2021-07-27 | Dial wheel type optical fiber rotary polarization regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215181205U true CN215181205U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121724120.8U Active CN215181205U (en) | 2021-07-27 | 2021-07-27 | Dial wheel type optical fiber rotary polarization regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215181205U (en) |
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2021
- 2021-07-27 CN CN202121724120.8U patent/CN215181205U/en active Active
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