CN101718904A - Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber - Google Patents
Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber Download PDFInfo
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- CN101718904A CN101718904A CN200910238723A CN200910238723A CN101718904A CN 101718904 A CN101718904 A CN 101718904A CN 200910238723 A CN200910238723 A CN 200910238723A CN 200910238723 A CN200910238723 A CN 200910238723A CN 101718904 A CN101718904 A CN 101718904A
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Abstract
The invention relates to a multidimensional adjusting device for stimulated Brillouin scattering of a fiber grating or a fiber, belonging to the technical fields of fiber lasers, fiber amplifiers and fiber gratings. The multidimensional adjusting device comprises an open box 1, a spring steel threaded pipe 2 and 2-50 adjusting screws, wherein the fiber grating or the fiber is arranged in a spiral groove on an inner lateral surface of the spring steel threaded pipe 2, one end of the spring steel threaded pipe 2 is arranged on a bottom surface in the open box 1, and the outer lateral surface of the spring steel threaded pipe is tangential and in movable fit with the inner wall of the open box 1; 2-50 adjusting screws are connected in 2-50 threaded holes on the wall of the open box 1; and part or all of the 2-50 adjusting screws are adjusted to apply force to the outer lateral surface of the spring steel threaded pipe 2 to realize the purpose of multidimensional adjustment of the stimulated Brillouin scattering of the fiber grating or the fiber. The device does not damage the fiber or the grating, cools the fiber grating or the fiber when water is filled in the open box, and has the advantage of multidimensional adjustment.
Description
Technical field
The present invention relates to be used for the multi-dimensional regulation device of fiber grating or optical fiber stimulated Brillouin scattering, belong to fiber laser, fiber amplifier, Fiber Bragg Grating technology field.
Background technology
Under the light laser irradiation in blue light or ultraviolet spectrum district, nonvolatil change can take place in the optical characteristics of silica fibre.The cyclical variation that utilizes this light sensitive effect can produce longitudinal refractive index along optical fiber, thus fiber grating formed.
Add suitable light feedback mechanism in the fiber amplifier chamber after, any image intensifer can be converted into laser instrument, and this laser instrument claims fiber laser.Adopt the fiber laser of fiber grating, be called fiber-grating laser as the light feedback mechanism.
Though IPG company has released 3 kilowatts of broadbands near diffraction limited commercial style single mode fiber laser, yet, need relevant synthetic realization of arrowband single frequency optical fiber laser in order to obtain the laser of MW magnitude good quality.Therefore, improve the output power of single single frequency optical fiber laser, realize the relevant synthetic key of arrowband single frequency optical fiber laser exactly.Usually, adopt the single frequency optical fiber laser seed source and the fiber amplifier of big sandwich layer area to constitute, this structure is called single-frequency main oscillations fiber amplifier.The principal element of restriction single-frequency main oscillations output power for fibre amplifier is the stimulated Brillouin scattering of big sandwich layer area fiber.
By regulating the reflection wavelength of fiber grating, realize the adjusting of the excitation wavelength of fiber laser, in many documents, report is arranged.Usually, this regulating device need be enclosed in fiber grating in the device, and the device more complicated need be embedded into fiber grating in the flexible foundation, can only regulate by one dimension.
Change the diffusing bandwidth of the effective excited Brillouin that comes broadening optical fiber by temperature and pressure,, in pertinent literature, be confirmed to obtain the raising of optical fiber stimulated Brillouin scattering threshold value.Adopt the device of pressure in the existing document, optical fiber need be embedded in the flexible foundation, though obtained reasonable effect, in a single day optical fiber embed, and will be difficult to reuse, and adjusting also is that one dimension is regulated.
Summary of the invention
In order to overcome existing regulating device complexity, and optical fiber can not use again, and is adjusted to the shortcoming that one dimension is regulated, and the invention provides a kind of multi-dimensional regulation device that is used to regulate the stimulated Brillouin scattering of fiber grating or optical fiber.
The objective of the invention is to be achieved through the following technical solutions:
The multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering, this device comprises: opening box, spring steel threaded line pipe, 2～50 adjusting screw; Fiber grating or optical fiber are positioned in the helicla flute on the spring steel threaded line pipe medial surface, and spring steel threaded line pipe one end is placed on the bottom surface in the opening box, and the lateral surface of spring steel threaded line pipe and the inwall of opening box are tangent, and for movingly; 2～50 adjusting screw are connected in 2～50 threaded holes on the opening box wall; Regulate part or all in 2～50 adjusting screw, make it spring steel threaded line pipe lateral surface is applied power, realize the purpose that the stimulated Brillouin scattering multidimensional of fiber grating or optical fiber is regulated.
Opening box is made by iron, aluminium or copper product; The spring steel threaded line pipe is made by spring steel.
2～50 threaded holes on the opening box wall are distributed in the optional position on the opening box wall.
During water filling, water level is lower than the lower limb position of the nethermost threaded hole on the opening box wall in the opening box.
Beneficial effect of the present invention is specific as follows: the multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering, realize that by the screw of regulating diverse location the fiber grating of expectation or the pressure in the optical fiber change, do not need fiber grating or optical fiber are carried out any processing, do not destroy fiber grating or optical fiber, the fiber grating or the optical fiber that can adapt to different length deftly, during water filling,, has the advantage that multidimensional is regulated in the opening box to fiber grating or optical fiber cooling.
Description of drawings
Fig. 1 is the multi-dimensional regulation device vertical view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Fig. 2 is the multi-dimensional regulation device A-A view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Fig. 3 is the helicla flute stretch-out view on the spring steel threaded line pipe medial surface.
Fig. 4 is the multi-dimensional regulation device front view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Fig. 5 is the multi-dimensional regulation device left view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Fig. 6 is the multi-dimensional regulation device rear view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Fig. 7 is the multi-dimensional regulation device right view that is used for fiber grating or optical fiber stimulated Brillouin scattering.
Embodiment
Among the following embodiment, do not do specified otherwise, the unit of size is millimeter.
Embodiment one
Shown in Fig. 1 and 2, be used for the multi-dimensional regulation device of fiber grating or optical fiber stimulated Brillouin scattering, this regulating device comprises opening box 1,2,6 adjusting screw of spring steel threaded line pipe.Fiber grating or optical fiber are positioned in the helicla flute on spring steel threaded line pipe 2 medial surfaces, and spring steel threaded line pipe 2 one ends are placed on the bottom surface in the opening box 1, and the inwall of the lateral surface of spring steel threaded line pipe 2 and opening box 1 is tangent, and for movingly; 6 adjusting screw are connected in 6 threaded holes on opening box 1 wall; Regulate part or all in 6 adjusting screw, make it spring steel threaded line pipe 2 lateral surfaces are applied power, realize the purpose that the stimulated Brillouin scattering multidimensional of fiber grating or optical fiber is regulated.
The layout of 6 threaded holes on opening box 1 wall: the both sides of height center line on the wall of opening box 1 front, each threaded hole that distributes, adjusting screw 7 is connected with it with 8, as shown in Figure 4.On the wall on opening box 1 left side, the threaded hole that on the height center line, distributes, adjusting screw 12 is connected with it, as shown in Figure 5.On the wall of opening box 1 back, on the height center line, two threaded holes that distribute, adjusting screw 10 is connected with it with 11, as shown in Figure 6.On the wall on opening box 1 right side, the threaded hole that on the height center line, distributes, adjusting screw 9 is connected with it, as shown in Figure 7.
Spring steel threaded line pipe 2 is an elliptical tube, highly be 70, wall thickness is 1, and outside long axis of ellipse length is 80, and minor axis length is 70, be carved with helicla flute on the medial surface, the helicla flute shape is that radius is 0.35 semicircle at the bottom of the spiral fluted xsect as shown in Figure 3, and the width of mouth is 0.7, length is 0.25 rectangle, and spiral fluted pitch is 2.Spring steel threaded line pipe 2 is made by spring steel.
When being used for the multidimensional adjusting of optical fiber stimulated Brillouin scattering, water filling in opening box 1, water level is lower than the lower limb position of the threaded hole of adjusting screw 8 connections, realizes the cooling to optical fiber.
Leave through hole 3,4,5,6 on the opening box 1, see Fig. 1, be used for fixedlying connected of this device and stationary platform.
Embodiment two
The multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering, this regulating device comprise opening box 1,2,6 adjusting screw of spring steel threaded line pipe.Fiber grating or optical fiber are positioned in the helicla flute on spring steel threaded line pipe 2 medial surfaces, and spring steel threaded line pipe 2 one ends are placed on the bottom surface in the opening box 1, and the inwall of spring steel threaded line pipe 2 lateral surfaces and opening box 1 is tangent, and for movingly; 50 adjusting screw are connected in 50 threaded holes on opening box 1 wall; Regulate part or all in 50 adjusting screw, make it spring steel threaded line pipe 2 lateral surfaces are applied power, realize the purpose that the stimulated Brillouin scattering multidimensional of fiber grating or optical fiber is regulated.
The layout of 50 threaded holes on opening box 1 wall is distributed in the optional position on the opening box wall.
Spring steel threaded line pipe 2 is an elliptical tube, highly be 80, wall thickness is 1.5, the outside diameter of spring steel threaded line pipe 2 is 100, carves helicla flute on the medial surface, and the helicla flute shape as shown in Figure 3, be that radius is 0.35 semicircle at the bottom of the spiral fluted xsect, the width of mouth is 0.7, and length is 0.25 rectangle, and spiral fluted pitch is 2.Spring steel threaded line pipe 2 is made by spring steel.
When being used for the multidimensional adjusting of optical fiber stimulated Brillouin scattering, water filling in opening box 1, water level is lower than the lower limb position of the nethermost threaded hole on the wall.Realization is to the cooling of optical fiber.
Claims (4)
1. be used for the multi-dimensional regulation device of fiber grating or optical fiber stimulated Brillouin scattering, it is characterized by: this multi-dimensional regulation device comprises opening box (1), spring steel threaded line pipe (2), 2～50 adjusting screw; Fiber grating or optical fiber are positioned in the helicla flute on spring steel threaded line pipe (2) medial surface, spring steel threaded line pipe (2) one ends are placed on the interior bottom surface of opening box (1), the inwall of the lateral surface of spring steel threaded line pipe (2) and opening box (1) is tangent, and for movingly; 2～50 adjusting screw are connected in 2～50 threaded holes on opening box (1) wall; Regulate part or all in 2～50 adjusting screw, make it spring steel threaded line pipe (2) lateral surface is applied power, realize the stimulated Brillouin scattering multidimensional of fiber grating or optical fiber is regulated.
2. the multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering according to claim 1 is characterized by: opening box (1) is made by iron, aluminium or copper product; Spring steel threaded line pipe (2) is made by spring steel.
3. the multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering according to claim 1 is characterized by: 2～50 threaded holes on opening box (1) wall are distributed in the optional position on opening box (1) wall.
4. the multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering according to claim 1 is characterized by: during the interior water filling of opening box (1), water level is lower than the lower limb position of the nethermost threaded hole on opening box (1) wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102387234A CN101718904B (en) | 2009-11-23 | 2009-11-23 | Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102387234A CN101718904B (en) | 2009-11-23 | 2009-11-23 | Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber |
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| Publication Number | Publication Date |
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| CN101718904A true CN101718904A (en) | 2010-06-02 |
| CN101718904B CN101718904B (en) | 2011-08-31 |
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| CN2009102387234A Expired - Fee Related CN101718904B (en) | 2009-11-23 | 2009-11-23 | Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916025A (en) * | 2010-07-23 | 2010-12-15 | 中国科学院上海光学精密机械研究所 | Device for restraining stimulated Brillouin scattering of optical fibers |
| CN102208750A (en) * | 2011-04-26 | 2011-10-05 | 北京交通大学 | Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold |
| CN103901696A (en) * | 2012-12-26 | 2014-07-02 | 中国兵器装备研究院 | Nonlinear-effect restraining optical fiber containing plate |
| CN105322431A (en) * | 2015-11-30 | 2016-02-10 | 华南理工大学 | Device for inhibiting stimulated brillouin scattering in high-power single-frequency optical fiber laser |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5469520A (en) * | 1994-09-30 | 1995-11-21 | United Technologies Corporation | Compression-tuned fiber grating |
| CN2303309Y (en) * | 1997-08-20 | 1999-01-06 | 中国科学院安徽光学精密机械研究所 | Simple type three-D optical fiber regulation frame |
| TW476013B (en) * | 2000-08-07 | 2002-02-11 | Ind Tech Res Inst | Electric fiber grating filter with switchable central wavelength |
| US6757113B1 (en) * | 2003-03-18 | 2004-06-29 | Lucent Technologies Inc. | Optical grating mount |
| CN1270161C (en) * | 2004-06-30 | 2006-08-16 | 南京大学 | Optical fiber strain three-dimensional simulation experimental bench |
-
2009
- 2009-11-23 CN CN2009102387234A patent/CN101718904B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916025A (en) * | 2010-07-23 | 2010-12-15 | 中国科学院上海光学精密机械研究所 | Device for restraining stimulated Brillouin scattering of optical fibers |
| CN102208750A (en) * | 2011-04-26 | 2011-10-05 | 北京交通大学 | Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold |
| CN103901696A (en) * | 2012-12-26 | 2014-07-02 | 中国兵器装备研究院 | Nonlinear-effect restraining optical fiber containing plate |
| CN105322431A (en) * | 2015-11-30 | 2016-02-10 | 华南理工大学 | Device for inhibiting stimulated brillouin scattering in high-power single-frequency optical fiber laser |
| CN105322431B (en) * | 2015-11-30 | 2018-09-14 | 华南理工大学 | A kind of device inhibiting stimulated Brillouin scattering in high-power single frequency optical fiber laser |
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| CN101718904B (en) | 2011-08-31 |
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