CN203981984U - Adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber - Google Patents
Adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber Download PDFInfo
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- CN203981984U CN203981984U CN201420452976.8U CN201420452976U CN203981984U CN 203981984 U CN203981984 U CN 203981984U CN 201420452976 U CN201420452976 U CN 201420452976U CN 203981984 U CN203981984 U CN 203981984U
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- wave plate
- optical
- optical fiber
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Abstract
The small size compact optical fiber wave plate that adopts counter-bending loss optical fiber, relates to the optical-fibre wave plate for optical communication.Be provided with platform, platform is provided with for placing the circular groove of 1/4 optical-fibre wave plate and for placing the circular groove of 1/2 optical-fibre wave plate, platform is located on support, and the tail optical fiber of the tail optical fiber of 1/4 optical-fibre wave plate and 1/2 optical-fibre wave plate passes from the both sides of support.Described platform can adopt and can carry out around platform central shaft the platform of 360 ° of rotations; Described platform can adopt screw to be fixed on support.It is the fiber optic loop of 7mm that described 1/4 optical-fibre wave plate can adopt radius; It is the fiber optic loop of 3.5mm that described 1/2 optical-fibre wave plate can adopt radius.Dwindle the size of optical-fibre wave plate, improved its temperature and wavelength stability, be conducive to use the miniaturization of equipment and the raising of performance of optical-fibre wave plate.Simple in structure, cost is low, easy to use.
Description
Technical field
The utility model relates to the optical-fibre wave plate for optical communication, especially relates to a kind of small size compact optical fiber wave plate that adopts counter-bending loss optical fiber.
Background technology
Optical-fibre wave plate is the optical device that a kind of stress birefrin that utilizes fibre-optical bending to form makes to produce between two crossed polarized lights phase differential.Optical-fibre wave plate has very important application in all-fiber current sensor and polarization state controller, and the quality of its performance can directly have influence on sensitivity and the stability of all-fiber current sensor and polarization state controller.Traditional optical-fibre wave plate is made by ordinary optic fibre, exists the problems such as oversize, temperature and wavelength stability be poor.
Traditional optical-fibre wave plate is made by ordinary optic fibre, because the bending loss of ordinary optic fibre is very large, the wave plate of therefore being made by it can only adopt the form (fiber optic coils that ordinary optic fibre 1/2 wave plate at 1550nm place is 1.69cm by radius forms around four circles) of " macrobending radius+multi-turn coil ".
Summary of the invention
The purpose of this utility model is for ubiquitous oversize, the temperature of existing optical-fibre wave plate and the problem such as wavelength stability is poor, and a kind of small size compact optical fiber wave plate that adopts counter-bending loss optical fiber is provided.
The utility model is provided with platform, and platform is provided with for placing the circular groove of 1/4 optical-fibre wave plate and for placing the circular groove of 1/2 optical-fibre wave plate, platform is located on support, and the tail optical fiber of the tail optical fiber of 1/4 optical-fibre wave plate and 1/2 optical-fibre wave plate passes from the both sides of support.
Described platform can adopt and can carry out around platform central shaft the platform of 360 ° of rotations; Described platform can adopt screw to be fixed on support.It is the fiber optic loop of 7mm that described 1/4 optical-fibre wave plate can adopt radius; It is the fiber optic loop of 3.5mm that described 1/2 optical-fibre wave plate can adopt radius.
The utility model utilizes little this feature of counter-bending loss optical fiber bending loss, adopt the form of " small-bend radius+one-turn coil " to make (the individual pen fiber optic coils that counter-bending loss optical fiber 1/2 wave plate at 1550nm place is 0.35cm by radius forms), therefore can greatly reduce the volume of wave plate, improve the structural compactedness of wave plate, improve temperature stability and the wavelength stability of optical-fibre wave plate, by theoretical analysis, can draw, when environment temperature changes, the phase alternation line degree of fitting of counter-bending loss optical fiber quarter wave plate and counter-bending loss optical fiber 1/2 wave plate is respectively 0.61 * 10
-4rad/ ℃ and 1.22 * 10
-4rad/ ℃, when input optical wavelength changes, the phase alternation line degree of fitting of counter-bending loss optical fiber quarter wave plate and counter-bending loss optical fiber 1/2 wave plate is respectively 1.05 * 10
-3rad/nm and 2.1 * 10
-3rad/nm.
The utility model utilizes counter-bending loss optical fiber to replace traditional ordinary optic fibre to carry out bending and make optical-fibre wave plate.While making quarter wave plate, counter-bending loss optical fiber is bent to the fiber optic loop that radius is 7mm, and with AB glue, intersection point is fixed; While making 1/2 wave plate, counter-bending loss optical fiber is bent to the fiber optic loop that radius is 3.5mm, and with AB glue, intersection point is fixed.Meanwhile, the rotatable platform of design can drive optical-fibre wave plate to carry out 360 ° of rotations, and is fixed in the needed angle of user.The utility model has the advantage of the size of having dwindled optical-fibre wave plate, improved its temperature and wavelength stability, be therefore conducive to use the miniaturization of equipment and the raising of performance of optical-fibre wave plate.Meanwhile, it is simple in structure, cost is low, easy to use, has higher practical value.
Accompanying drawing explanation
Fig. 1 is the structural representation of wave plate rotating mechanism in the utility model.
Embodiment
As shown in Figure 1, the utility model embodiment is provided with platform 2, platform 2 is provided with for placing the circular groove 31 of 1/4 optical-fibre wave plate and for placing the circular groove 32 of 1/2 optical-fibre wave plate, platform 2 is located on metal support 1, and the tail optical fiber of the tail optical fiber of 1/4 optical-fibre wave plate and 1/2 optical-fibre wave plate passes from the both sides of metal support 1.
Described platform 2 can adopt and can carry out around platform central shaft the platform of 360 ° of rotations; Described platform 2 can adopt screw to be fixed on metal support 1.It is the fiber optic loop of 7mm that described 1/4 optical-fibre wave plate can adopt radius; It is the fiber optic loop of 3.5mm that described 1/2 optical-fibre wave plate can adopt radius.
When unclamping screw, platform can carry out 360 ° of rotations around central shaft, and wave plate also rotates thereupon, and then plays the effect of adjusting angle between the fast and slow axis of wave plate and the polarization direction of incident light.After adjusting to suitable angle, by screw-driving.Counter-bending loss optical fiber is bent to respectively to the fiber optic loop that radius is 7mm and 3.5mm, and with AB glue, intersection point is fixed, just made quarter wave plate and 1/2 wave plate.
The utility model has solved the oversize problem of existing optical-fibre wave plate, adopting counter-bending loss optical fiber to substitute traditional ordinary optic fibre makes, according to needed additive phase extent (pi/2 or π), counter-bending loss optical fiber is bent to the fiber optic loop with certain radius, and with AB glue, intersection point is fixed, whole fiber optic loop is embedded on a platform that can rotate around central shaft, platform is installed on a support, and tail optical fiber passes from the two ends of support.Because counter-bending loss optical fiber has good bending loss characteristics, can be so that the bending radius of wave plate be accomplished very little, and then the structural compactedness of raising wave plate, improve temperature characterisitic and the wavelength characteristic of wave plate, in the optical devices such as all-fiber current sensor, optical fiber polarisation state controller, there is higher practical value.
Claims (5)
1. adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber, it is characterized in that being provided with platform, platform is provided with for placing the circular groove of 1/4 optical-fibre wave plate and for placing the circular groove of 1/2 optical-fibre wave plate, platform is located on support, and the tail optical fiber of the tail optical fiber of 1/4 optical-fibre wave plate and 1/2 optical-fibre wave plate passes from the both sides of support.
2. adopt as claimed in claim 1 the small size compact optical fiber wave plate of counter-bending loss optical fiber, it is characterized in that the platform of described platform for carrying out 360 ° of rotations around platform central shaft.
3. adopt as claimed in claim 1 the small size compact optical fiber wave plate of counter-bending loss optical fiber, it is characterized in that described platform adopts screw to be fixed on support.
4. adopt as claimed in claim 1 the small size compact optical fiber wave plate of counter-bending loss optical fiber, it is characterized in that described 1/4 optical-fibre wave plate adopts the fiber optic loop that radius is 7mm.
5. adopt as claimed in claim 1 the small size compact optical fiber wave plate of counter-bending loss optical fiber, it is characterized in that described 1/2 optical-fibre wave plate adopts the fiber optic loop that radius is 3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452976.8U CN203981984U (en) | 2014-08-12 | 2014-08-12 | Adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452976.8U CN203981984U (en) | 2014-08-12 | 2014-08-12 | Adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981984U true CN203981984U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420452976.8U Expired - Fee Related CN203981984U (en) | 2014-08-12 | 2014-08-12 | Adopt the small size compact optical fiber wave plate of counter-bending loss optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203981984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633241A (en) * | 2018-12-30 | 2019-04-16 | 广州申畅沃光电科技有限公司 | A kind of novel portable flexible optical fibre current measurement analyzer |
| CN109752579A (en) * | 2017-11-07 | 2019-05-14 | 许继集团有限公司 | A kind of novel all-fiber electronic current transformer and a kind of optical-fibre wave plate |
-
2014
- 2014-08-12 CN CN201420452976.8U patent/CN203981984U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752579A (en) * | 2017-11-07 | 2019-05-14 | 许继集团有限公司 | A kind of novel all-fiber electronic current transformer and a kind of optical-fibre wave plate |
| CN109633241A (en) * | 2018-12-30 | 2019-04-16 | 广州申畅沃光电科技有限公司 | A kind of novel portable flexible optical fibre current measurement analyzer |
| CN109633241B (en) * | 2018-12-30 | 2020-10-23 | 广州申畅沃光电科技有限公司 | Portable flexible optical fiber current measurement analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20210812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |