CN2550738Y - Temperature compensator for optical fiber grating wave length - Google Patents
Temperature compensator for optical fiber grating wave length Download PDFInfo
- Publication number
- CN2550738Y CN2550738Y CN 02262682 CN02262682U CN2550738Y CN 2550738 Y CN2550738 Y CN 2550738Y CN 02262682 CN02262682 CN 02262682 CN 02262682 U CN02262682 U CN 02262682U CN 2550738 Y CN2550738 Y CN 2550738Y
- Authority
- CN
- China
- Prior art keywords
- fixed
- movable base
- fiber grating
- base
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The utility model relates to an optical fiber and optical grating wave length temperature compensator, being a device which compensates the temperature in a mechanical way and can automatically attain the purpose of wave length and temperature compensation, which comprises a fixed base, a spring piece, a screw, a movable base, a guiding device, and a base plate, the lower end of the fixed base is fixed at one end of the base plate, the guiding device is fixed at the other end of the base plate, the movable base is positioned on the guiding device and can slide on the base plate, one end of the screw is perforated through the fixed base, the other end of the screw is connected with the thread of the movable base, the spring piece is in a circular arc shape, and the two ends of the spring piece are respectively fixed on the fixed base and the movable base. The screw, the fixed base and the movable base are made of same material, namely the material with consistent thermal expansion coefficient. The spring piece is made of material with low thermal expansion coefficient, and the thermal expansion coefficient of the spring piece is lower than the thermal expansion coefficient of the screw.
Description
One, technical field
The utility model is a kind of device that carries out temperature compensation with physical construction, belongs to the automatic compensatory technique field of optic fiber grating wavelength.
Two, background technology
The cloth loudspeaker lattice wave of fiber grating long (λ) is cycle (Λ) and the mean refractive index (n) that is decided by fiber grating.When temperature variation, Λ and n will change, and cause the drift of λ.
The at present existing thermal expansivity that utilizes constituent material is regulated the tension force on the optical fiber, causes the stable of optic fiber grating wavelength.For example: (1) utilizes bimetal structure; (2) utilize diamond structure to wait to regulate tension force on the optical fiber.The shortcoming of this type of mechanism structure: the tension adjustment scope is little, is difficult to after the encapsulation adjust, and volume is big.
Three, technology contents
1, goal of the invention:
Goal of the invention of the present utility model does not change with temperature with regard to providing a kind of cloth loudspeaker lattice wave length of fiber grating that makes, and can reach the temperature compensator of the optic fiber grating wavelength of wavelength/temperature compensation purpose automatically.
2, technical scheme:
The temperature compensator of optic fiber grating wavelength of the present utility model is made up of optical fiber and temperature compensation division branch.This device is made up of fixed pedestal, spring leaf, screw rod, movable base, guide piece, substrate, the lower end of fixed pedestal is fixed on the end on the substrate, the other end of substrate is fixed with guide piece, movable base is positioned on the guide piece and can slides on substrate, one end of screw rod passes fixed pedestal, and the other end of screw rod is threaded with movable base.Spring leaf is a circular arc, and its two is separately fixed on fixed pedestal and the movable base.Screw rod, fixed pedestal, movable base adopt identical materials to make, i.e. the material of thermal expansivity unanimity.Spring leaf adopts the material of low thermal coefficient of expansion to make, and its thermal expansivity is less than the thermal expansivity of screw rod.
Principle of work:
The cloth loudspeaker lattice wave of fiber grating long (λ) is cycle (Λ) and the mean refractive index (n) that is decided by fiber grating.When temperature variation, Λ and n will change, and cause the drift of λ.
On fiber grating, add a tension force in advance,, bring out the drift of λ because the elongation of fiber grating causes the variation of fiber grating Λ and n.If this tension force that adds in advance increases along with temperature and reduces, this just may compensate because the wavelength increase that temperature raises and causes because pre-tension reduce to cause reducing of wavelength.Combined mechanism of the present invention is just with this principle design.
The course of work:
(1) fiber grating is cemented on fixed pedestal (3), the movable base (6) with epoxide-resin glue;
(2) with the relative position of screw rod (5) adjusting fixed pedestal (3), movable base (6), make optical fiber be in suitable stretching state;
(3) two ends of spring leaf (4) embed in the limit groove of fixed pedestal (3), movable base (6), make the curved apex of spring leaf withstand optical fiber, produce an additional tension;
(4) when temperature increases, screw rod produces thermal expansion, causes movable base relative displacement (increase), produces tension force on fiber grating, causes that wavelength increases;
(5) because the movable base displacement increases, the elasticity of spring leaf is discharged, reduced additional tension, wavelength is reduced.Compensated the influence of temperature to wavelength;
(6) when temperature reduces, said process is opposite.
3, technique effect:
Advantage of the present utility model is pre-tension on the scalable optical fiber; Utilize spring leaf can on optical fiber, produce additional tension, increase the range of adjustment of tension force; When temperature variation, can utilize unitized construction to keep the tension force on the optical fiber constant substantially.Therefore can reach the purpose of wavelength/temperature compensation automatically.
Four, description of drawings
Fig. 1 is a general structure synoptic diagram of the present utility model.Comprising fiber grating 1, bonding agent 2, fixed pedestal 3, spring leaf 4, screw rod 5, movable base 6, guide piece 7, substrate 8.
Five, specific implementation method
The temperature compensator of optic fiber grating wavelength of the present utility model, form by optical fiber and temperature compensation division branch, this device is made up of fixed pedestal 3, spring leaf 4, screw rod 5, movable base 6, guide piece 7, substrate 8, the lower end of fixed pedestal 3 is fixed on the substrate 8, the other end of substrate 8 is fixed with guide piece 7, and movable base 6 also can orientation slide on substrate 8 between the guide piece 7.One end of screw rod 5 passes fixed pedestal 3, and the other end of screw rod 5 is threaded with movable base 6.Spring leaf 4 is a circular arc, and its two is separately fixed on fixed pedestal 3 and the movable base 6.
Specific requirement is as follows
1, screw rod a pair of pedestal adopts same material.For example aluminium, steel etc., in 0～100 ℃ of temperature range, thermal expansivity is α
1=10
-5/ number of degrees magnitude.
2, spring leaf material coefficient of thermal expansion factor alpha
2＜α
1, can adopt the invar sheet, than the little order of magnitude of above-mentioned material.
3, guarantee that movable base 6 moves flexibly, reduce friction as far as possible with substrate 8.
4, in order to guarantee moving axially of movable base 6, the both sides of movable base 6 adds guide piece 7.
5, spring leaf 4 is clamped between fixed pedestal 3, the movable base 6, must have elasticity.
Claims (3)
1, a kind of temperature compensator of optic fiber grating wavelength, form by optical fiber and temperature compensation division branch, it is characterized in that this device is by fixed pedestal (3), spring leaf (4), screw rod (5), movable base (6), guide piece (7), substrate (8) is formed, the lower end of fixed pedestal (3) is fixed on the end on the substrate (8), the other end of substrate (8) is fixed with guide piece (7), movable base (6) is positioned at guide piece (7) and goes up also and can go up slip at substrate (7), one end of screw rod (5) passes fixed pedestal (3), the other end of screw rod (5) should (6) be threaded with movable base, spring leaf (4) is a circular arc, and its two is separately fixed on fixed pedestal (1) and the movable base (6).
2, the temperature compensator of optic fiber grating wavelength according to claim 1 is characterized in that screw rod (5), fixed pedestal (3), movable base (6) adopt identical materials to make, i.e. the material of thermal expansivity unanimity.
3, the temperature compensator of optic fiber grating wavelength according to claim 1 and 2 it is characterized in that spring leaf (4) adopts the material of low thermal coefficient of expansion to make, and its thermal expansivity is less than the thermal expansivity of screw rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262682 CN2550738Y (en) | 2002-06-25 | 2002-06-25 | Temperature compensator for optical fiber grating wave length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262682 CN2550738Y (en) | 2002-06-25 | 2002-06-25 | Temperature compensator for optical fiber grating wave length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2550738Y true CN2550738Y (en) | 2003-05-14 |
Family
ID=33729197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262682 Expired - Fee Related CN2550738Y (en) | 2002-06-25 | 2002-06-25 | Temperature compensator for optical fiber grating wave length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2550738Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950053A (en) * | 2010-09-10 | 2011-01-19 | 中航光电科技股份有限公司 | Optical fiber connector |
| CN101855528B (en) * | 2007-11-09 | 2012-11-21 | 萨索特兰公司 | Surface temperature sensing system |
| WO2013091401A1 (en) * | 2011-12-20 | 2013-06-27 | 武汉光迅科技股份有限公司 | Method for compensating for wavelength shift in wavelength selective switch, and device therefor |
| CN103615449A (en) * | 2013-11-25 | 2014-03-05 | 中国科学院长春光学精密机械与物理研究所 | Compressing device in solidification process of glue for main grating glass ruler and ruler shell of grating ruler |
| CN104295578A (en) * | 2014-10-24 | 2015-01-21 | 中国科学院上海光学精密机械研究所 | Grating ruler mounting tool capable being elongated |
| CN106094116A (en) * | 2015-04-30 | 2016-11-09 | 晋禾企业股份有限公司 | Temperature compensated fiber Bragg grating filter device |
| CN107086698B (en) * | 2017-06-21 | 2023-12-15 | 中原内配（上海）电子科技有限公司 | Electric control actuator and motor fixing structure for vehicle |
-
2002
- 2002-06-25 CN CN 02262682 patent/CN2550738Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855528B (en) * | 2007-11-09 | 2012-11-21 | 萨索特兰公司 | Surface temperature sensing system |
| CN101950053A (en) * | 2010-09-10 | 2011-01-19 | 中航光电科技股份有限公司 | Optical fiber connector |
| CN101950053B (en) * | 2010-09-10 | 2012-10-03 | 中航光电科技股份有限公司 | Optical fiber connector |
| WO2013091401A1 (en) * | 2011-12-20 | 2013-06-27 | 武汉光迅科技股份有限公司 | Method for compensating for wavelength shift in wavelength selective switch, and device therefor |
| US9766421B2 (en) | 2011-12-20 | 2017-09-19 | Accelink Technologies Co., Ltd. | Method for compensating for wavelength shift in wavelength selective switch, and device therefor |
| CN103615449A (en) * | 2013-11-25 | 2014-03-05 | 中国科学院长春光学精密机械与物理研究所 | Compressing device in solidification process of glue for main grating glass ruler and ruler shell of grating ruler |
| CN103615449B (en) * | 2013-11-25 | 2015-06-10 | 中国科学院长春光学精密机械与物理研究所 | Compressing device in solidification process of glue for main grating glass ruler and ruler shell of grating ruler |
| CN104295578A (en) * | 2014-10-24 | 2015-01-21 | 中国科学院上海光学精密机械研究所 | Grating ruler mounting tool capable being elongated |
| CN104295578B (en) * | 2014-10-24 | 2016-06-08 | 中国科学院上海光学精密机械研究所 | Long grating chi setting tool can be connect |
| CN106094116A (en) * | 2015-04-30 | 2016-11-09 | 晋禾企业股份有限公司 | Temperature compensated fiber Bragg grating filter device |
| CN106094116B (en) * | 2015-04-30 | 2019-11-08 | 晋禾企业股份有限公司 | Temperature compensated fiber Bragg grating filter device |
| CN107086698B (en) * | 2017-06-21 | 2023-12-15 | 中原内配（上海）电子科技有限公司 | Electric control actuator and motor fixing structure for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |