CN102231470B - Temperature controlling device for increasing fiber SBS (Stimulated Brillouin Scattering) threshold - Google Patents
Temperature controlling device for increasing fiber SBS (Stimulated Brillouin Scattering) threshold Download PDFInfo
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- CN102231470B CN102231470B CN2011101049365A CN201110104936A CN102231470B CN 102231470 B CN102231470 B CN 102231470B CN 2011101049365 A CN2011101049365 A CN 2011101049365A CN 201110104936 A CN201110104936 A CN 201110104936A CN 102231470 B CN102231470 B CN 102231470B
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- 239000000835 fiber Substances 0.000 title claims abstract description 32
- 239000013307 optical fiber Substances 0.000 claims abstract description 69
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 8
- 229910000639 Spring steel Inorganic materials 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 5
- 239000010451 perlite Substances 0.000 claims description 5
- 235000019362 perlite Nutrition 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 229910001188 F alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
提高光纤受激布里渊散射阈值的温度控制装置，属于高功率窄线宽光纤激光器、窄线宽光纤放大器领域。本发明所要解决的技术问题是克服现有装置工艺复杂、光纤不能再使用、光纤伸缩小等缺点。该装置的第一调节螺丝(51)、第二调节螺丝(52)分别与第一拉伸弹簧(61)、第二拉伸弹簧(62)一端连接；第一拉伸弹簧(61)另一端、第二拉伸弹簧(62)另一端分别与薄管(4)的内侧壁、外侧壁连接；温度控制器负载(32)放置在绝热盒(1)内，与温度控制器(31)连接；掺稀土光纤(7)通过设在绝热盖(2)的第一小通孔(21)进入绝热盒(1)内，螺旋粘贴在薄管(4)外侧壁后，从设在绝热盖(2)的第二小通孔(22)穿出。
The invention discloses a temperature control device for increasing the threshold value of optical fiber stimulated Brillouin scattering, belonging to the fields of high-power narrow-linewidth fiber lasers and narrow-linewidth fiber amplifiers. The technical problem to be solved by the present invention is to overcome the disadvantages of the existing device such as complex process, unusable optical fiber, small optical fiber stretching and the like. The first adjusting screw (51) and the second adjusting screw (52) of the device are respectively connected with one end of the first tension spring (61) and the second tension spring (62); the other end of the first tension spring (61) 1. The other end of the second tension spring (62) is respectively connected with the inner sidewall and the outer sidewall of the thin tube (4); the temperature controller load (32) is placed in the heat insulation box (1) and connected with the temperature controller (31) The rare-earth-doped optical fiber (7) enters the heat-insulating box (1) through the first small through-hole (21) that is located at the heat-insulating cover (2), and is pasted on the outer sidewall of the thin tube (4) by spiral, and is arranged on the heat-insulating cover ( 2) the second small through hole (22) passes through.
Description
Technical field
The present invention relates to a kind of temperature control equipment that improves the optical fiber stimulated Brillouin scattering threshold value, belong to high power narrow linewidth fiber laser, narrow linewidth fiber amplifier field.
Background technology
Stimulated Brillouin scattering is a kind of non-linear process that in optical fiber, takes place, and its needed incident power is far below the needed incident power of stimulated Raman scattering.In case reach the Brillouin scattering threshold value, stimulated Brillouin scattering will convert most input powers into reverse stokes wave [Govind P.Agrawal, Nonlinear Fiber Optics, Third Edition, San Diego, CA:Academic].Obviously, stimulated Brillouin scattering has limited the maximum power that optical fiber can transmit.In addition, if stimulated Brillouin scattering can not be suppressed fully, will cause the change at random of pump power, thereby cause corresponding signal noise, reduce quality of signals.
At present, the stimulated Brillouin scattering threshold value that improves in the optical fiber mainly contains following several kinds:
1) makes optical fiber, make in the optical fiber residual stress to suppress the stimulated Brillouin scattering in the optical fiber.When cadmium optical fiber was mixed in making, suffered stress suppressed the stimulated Brillouin scattering in the Transmission Fibers to people such as Jane Bilecky Clayton when drawing in the modulation optical fiber in U.S. Pat 005851259A.People such as Alan Frank Evans at U.S. Pat 006542683B1 when making optical fiber; Realize that through the glassy layer that alternately changes phosphorous and fluorine alloy fibre core has non-homogeneous viscosity and distributes with CTE, thus make residue in the optical fiber, forever, unequal stress; When drawing optical fiber, receive and experience big temperature gradient and cooling fast after drawing optical fibers tension force and optical fiber leave smelting furnace, thereby strengthened the excited Brillouin depression effect that unequal stress provides.This method mainly is fit to non-single-mode transmission optical fiber of mixing rare earth.
2) frequency of sound wave that changes in the optical fiber changes along with the variation of fiber lengths, realizes broadening brillouin gain bandwidth.
Change in the optical fiber frequency of sound wave can through change the sandwich layer radius with fiber lengths changes [K.Shiraki, M.Ohashi, and M.Tateda; " Suppression of stimulated Brillouin scattering in a fibre by changing the core radius, " Electron.Lett.vol.31, no.8; pp.668-669, April.1995] or change the sandwich layer doping content with fiber lengths change [K.Tsujikawa, K.Nakajima; Y.Miyajima, and M.Ohashi, " New SBS suppression fiber with uniform chromatic dispersion to enhance four-wave mixing; " IEEE photon.Technol.Lett., vol.10, no.8; Pp.1139-1141, Aug.1998] realize.Obviously, these two kinds of methods all relate to the design again to optical fiber structure, and therefore, the frequency of sound wave in can't flexible optical fiber is to improve the stimulated Brillouin scattering threshold value in the optical fiber.
The frequency of sound wave that changes in the optical fiber also can change realization with fiber lengths through changing temperature.People such as Y.Imai are at document [" Dependence of stimulated Brillouin scattering on temperature distribution in polarization-maintaining fibers; " IEEEPhoton.Technol.Lett.; Vol.5, no.11, pp.1335-1337; Nov.1993] in poor through increasing in the fiber reel difference fiber optic temperature, realize improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This method can't apply the effect of power to optical fiber, and mainly is fit to non-single-mode transmission optical fiber of mixing rare earth.
The frequency of sound wave that changes in the optical fiber also can change realization with fiber lengths through changing pressure distribution.People such as Joshua E.Rothenberg are at document [" Suppression of Stimulated Brillouin Scattering in Single-Frequency Multi-Kilowatt Fiber Amplifiers "; Proc.of SPIEVol.6873; 68730O; (2008)] and among U.S. Pat 2007/0019918 and the international monopoly WO2007/055754 optical fiber is embedded in circular or the oval-shaped rotating disk; Make the axes of inertia of optical fiber and elasticity rotating disk have skew, the elasticity rotating disk is exerted pressure, the tensile force or the compression stress that optical fiber are received be directly proportional with axes of inertia deviation post.People such as Joshua E.Rothenberg point out also and can optical fiber be embedded in the oval beam that utilization is reversed, and oval beam is applied compression stress, realize same effect.This method need be embedded into optical fiber in elasticity rotating disk or the oval beam, and optical fiber surface can not receive any pressure with the transverse cross-section parallel direction, realizes that technological requirement is high, in case and after optical fiber embeds, can not reuse, increased use cost.
One Chinese patent application number: the 201010104948.3 pairs of fiber lengths are that 50 meters monomode fiber applies negative temperature gradient and longitudinal pressure simultaneously or applies positive temperature gradient and longitudinal tension force simultaneously, realize suppressing the purpose of the stimulated Brillouin scattering in the narrow band fiber Raman amplifier; Yet do not provide concrete rational technique means in this patent application.People such as Peter Krummrich propose Transmission Fibers is divided into several sections in U.S. Pat 2001/0019642 A1 and Deutsche Bundespatent 19961514 A1, and each part is carried out mechanical connection so that the adjacent part sound wave is not coupled; Perhaps optical fiber is vertically applied heterogeneity machinery pulling force, form the different fibers grid, with the phase relation of disturbance light wave and sound wave or reverse light wave and sound wave.This method mainly is fit to Transmission Fibers, does not also provide the concrete mechanical pulling force technological means that on optical fiber, acts in the patent.
One Chinese patent application number 200910237785.3 methods through ring dish, left outer shroud dish and right outer shroud dish in the design; Solve in the U.S. Pat 2007/0019918 optical fiber surface that occurs easily and received the pressure situation with the transverse cross-section parallel direction easily, and the optical fiber problem that is difficult to reuse.Because interior ring dish outer surface is oval, on oblong surface, engraves the exigent helicla flute of precision and surface roughness, technological requirement is very high.One Chinese patent application numbers 200910238723.4 has provided a kind of multi-dimensional regulation device that is used for fiber grating or optical fiber stimulated Brillouin scattering; The inside thread processing of the spring steel screwed pipe in this device; Technological requirement is very high with patent 200910237785.3 the same requirements, and optical fiber how to be placed in the helicla flute also be the technological difficulties that realize.One Chinese patent application numbers 200920350821.2 is designed to circle with interior ring dish outer surface; Solved the difficult problem of technologic realization, its shortcoming is that adjustable range is little in the opening two ends distance of regulating the opening outer shroud; And; In the outer surface of ring be circular, the pressure in easily the opening outer shroud being acted on outside the ring is uniformly dispersed, be unfavorable for realizing optical fiber with the cross section vertical direction on big stretching or compression variation.
Summary of the invention
Technical problem to be solved by this invention be overcome that existing apparatus complex process, optical fiber can not re-use, the flexible shortcoming such as little of optical fiber, a kind of temperature control equipment that improves the optical fiber stimulated Brillouin scattering threshold value is proposed.
The objective of the invention is to realize through following technical scheme:
Improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, comprise boxes, heat-insulating cover, temperature controller, temperature controller load, light wall pipe, first set screw, second set screw, first extension spring, second extension spring; First set screw is connected with first extension spring through first screwed hole on the boxes; Second set screw is connected with second extension spring through second screwed hole, the clear opening on the light wall pipe on the boxes; The clear opening heart on the Kong Xinyu light wall pipe of the first screwed hole hole heart, second screwed hole all is positioned on the half the plane of boxes height, and these three hole hearts are positioned on the straight line, and this straight line is the diameter of light wall pipe and the diameter of boxes; First extension spring is connected with the lateral wall of light wall pipe, and second extension spring is connected with the madial wall of light wall pipe; The temperature controller load placed is connected with temperature controller in boxes;
Rare earth doped fiber gets in the boxes through first small through hole that is located at heat-insulating cover, after spiral sticks on the light wall pipe lateral wall, passes from second small through hole that is located at heat-insulating cover.
Boxes is cuboid or oval cylinder; Light wall pipe is an elliptical tube.
Light wall pipe is 1mm～3mm; The height of light wall pipe is 60%～95% of a boxes height.
Boxes and heat-insulating cover are that asbestos or expanded perlite are processed by heat-insulating material, and light wall pipe is made by spring steel.
The temperature regulating range of temperature controller is-50 ℃～150 ℃.
The temperature controller load is heater load or cooler load or heater load and cooler load.
Beneficial effect of the present invention is specific as follows: through temperature controller, temperature controller load, when reducing the temperature in the boxes, shrinkage appears in light wall pipe; At this moment; Regulate second set screw, second extension spring occur to be stretched, thereby make that stretching appears in the zone near the second extension spring tie point on the light wall pipe lateral surface; Compression appears in the zone near clear opening on the light wall pipe lateral surface, and remaining zone is indeformable; Through temperature controller, temperature controller load; When increasing the temperature in the boxes, heat expansion appears in light wall pipe, regulates first set screw this moment; Make first extension spring occur stretching; Thereby make that compression appears in the zone near the first extension spring tie point on the light wall pipe lateral surface, stretching appears in the zone near clear opening on the light wall pipe lateral surface, and remaining zone is indeformable; The optical fiber that sticks on accordingly on the light wall pipe lateral surface keeps the distortion the same with the light wall pipe lateral surface, realizes improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This device adjustable range is wide, flexible working mode.
Description of drawings
Fig. 1 is for improving the temperature control equipment sketch map of optical fiber stimulated Brillouin scattering threshold value.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one
Improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, comprise boxes 1, heat-insulating cover 2, temperature controller 31, temperature controller load 32, light wall pipe 4, first set screw 51, second set screw 52, first extension spring 61, second extension spring 62; First set screw 51 is connected with first extension spring 61 through first screwed hole on the boxes 1; Second set screw 52 is connected with second extension spring 62 through second screwed hole, the clear opening on the light wall pipe 4 on the boxes 1; The clear opening heart on the Kong Xinyu light wall pipe 4 of the first screwed hole hole heart, second screwed hole all is positioned on the half the plane of boxes 1 height, and these three hole hearts are positioned on the straight line, and this straight line is the diameter of light wall pipe 4 and the diameter of boxes 1; First extension spring 61 is connected with the lateral wall of light wall pipe 4, and second extension spring 62 is connected with the madial wall of light wall pipe 4; Temperature controller load 32 is placed in the boxes 1, is connected with temperature controller 31;
Rare earth doped fiber 7 gets in the boxes 1 through first small through hole 21 that is located at heat-insulating cover 2, after spiral sticks on light wall pipe 4 lateral walls, passes from second small through hole 22 that is located at heat-insulating cover 2.
Boxes 1 is cuboid or oval cylinder; Light wall pipe 4 is an elliptical tube.
Light wall pipe 4 is 1mm; The height of light wall pipe 4 is 60% of boxes 1 height.
Boxes 1 is that asbestos or expanded perlite are processed with heat-insulating cover 2 by heat-insulating material, and light wall pipe 4 is made by spring steel.
The temperature regulating range of temperature controller 31 is-50 ℃～150 ℃.
Temperature controller load 32 is a heater load.
Through temperature controller 31, temperature controller load 32; Temperature in the boxes 1 is when normal temperature progressively is increased to 150 ℃, and heat expansion appears in light wall pipe 4, regulates first set screw this moment; Make first extension spring occur stretching; Thereby make that compression appears in the zone near the first extension spring tie point on light wall pipe 4 lateral surfaces, stretching appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; The optical fiber that sticks on accordingly on light wall pipe 4 lateral surfaces keeps and the same distortion of light wall pipe 4 lateral surfaces, realizes improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This device adjustable range is wide, flexible working mode.
Embodiment two
Improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, comprise boxes 1, heat-insulating cover 2, temperature controller 31, temperature controller load 32, light wall pipe 4, first set screw 51, second set screw 52, first extension spring 61, second extension spring 62; First set screw 51 is connected with first extension spring 61 through first screwed hole on the boxes 1; Second set screw 52 is connected with second extension spring 62 through second screwed hole, the clear opening on the light wall pipe 4 on the boxes 1; The clear opening heart on the Kong Xinyu light wall pipe 4 of the first screwed hole hole heart, second screwed hole all is positioned on the half the plane of boxes 1 height, and these three hole hearts are positioned on the straight line, and this straight line is the diameter of light wall pipe 4 and the diameter of boxes 1; First extension spring 61 is connected with the lateral wall of light wall pipe 4, and second extension spring 62 is connected with the madial wall of light wall pipe 4; Temperature controller load 32 is placed in the boxes 1, is connected with temperature controller 31;
Rare earth doped fiber 7 gets in the boxes 1 through first small through hole 21 that is located at heat-insulating cover 2, after spiral sticks on light wall pipe 4 lateral walls, passes from second small through hole 22 that is located at heat-insulating cover 2.
Boxes 1 is cuboid or oval cylinder; Light wall pipe 4 is an elliptical tube.
Light wall pipe 4 is 3mm; The height of light wall pipe 4 is 95% of boxes 1 height.
Boxes 1 is that expanded perlite is processed with heat-insulating cover 2 by heat-insulating material, and light wall pipe 4 is made by spring steel.
The temperature regulating range of temperature controller 31 is-50 ℃～150 ℃.
Temperature controller load 32 is the cooler load.
Through temperature controller 31, temperature controller load 32, the temperature in the boxes 1 progressively is reduced to-50 ℃ from normal temperature, and shrinkage appears in light wall pipe 4; At this moment; Regulate second set screw, second extension spring occur to be stretched, thereby make that stretching appears in the zone near the second extension spring tie point on light wall pipe 4 lateral surfaces; Compression appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; The optical fiber that sticks on accordingly on light wall pipe 4 lateral surfaces keeps and the same distortion of light wall pipe 4 lateral surfaces, realizes improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This device adjustable range is wide, flexible working mode.
Embodiment three
Improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, comprise boxes 1, heat-insulating cover 2, temperature controller 31, temperature controller load 32, light wall pipe 4, first set screw 51, second set screw 52, first extension spring 61, second extension spring 62; First set screw 51 is connected with first extension spring 61 through first screwed hole on the boxes 1; Second set screw 52 is connected with second extension spring 62 through second screwed hole, the clear opening on the light wall pipe 4 on the boxes 1; The clear opening heart on the Kong Xinyu light wall pipe 4 of the first screwed hole hole heart, second screwed hole all is positioned on the half the plane of boxes 1 height, and these three hole hearts are positioned on the straight line, and this straight line is the diameter of light wall pipe 4 and the diameter of boxes 1; First extension spring 61 is connected with the lateral wall of light wall pipe 4, and second extension spring 62 is connected with the madial wall of light wall pipe 4; Temperature controller load 32 is placed in the boxes 1, is connected with temperature controller 31;
Rare earth doped fiber 7 gets in the boxes 1 through first small through hole 21 that is located at heat-insulating cover 2, after spiral sticks on light wall pipe 4 lateral walls, passes from second small through hole 22 that is located at heat-insulating cover 2.
Boxes 1 is cuboid or oval cylinder; Light wall pipe 4 is an elliptical tube.
Light wall pipe 4 is 2mm; The height of light wall pipe 4 is 80% of boxes 1 height.
Boxes 1 is that asbestos are processed with heat-insulating cover 2 by heat-insulating material, and light wall pipe 4 is made by spring steel.
The temperature regulating range of temperature controller 31 is-50 ℃～150 ℃.
Temperature controller load 32 is heater load and cooler load.
Through the cooler load in temperature controller 31, the temperature controller load 32, the temperature in the boxes 1 progressively is reduced to-50 ℃ from normal temperature, and shrinkage appears in light wall pipe 4; At this moment; Regulate second set screw, second extension spring occur to be stretched, thereby make that stretching appears in the zone near the second extension spring tie point on light wall pipe 4 lateral surfaces; Compression appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; Through the heater load in temperature controller 31, the temperature controller load 32; Temperature in the boxes 1 is when normal temperature progressively is increased to 150 ℃, and heat expansion appears in light wall pipe 4, regulates first set screw this moment; Make first extension spring occur stretching; Thereby make that compression appears in the zone near the first extension spring tie point on light wall pipe 4 lateral surfaces, stretching appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; The optical fiber that sticks on accordingly on light wall pipe 4 lateral surfaces keeps and the same distortion of light wall pipe 4 lateral surfaces, realizes improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This device adjustable range is wide, flexible working mode.
Embodiment four
Improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, comprise boxes 1, heat-insulating cover 2, temperature controller 31, temperature controller load 32, light wall pipe 4, first set screw 51, second set screw 52, first extension spring 61, second extension spring 62; First set screw 51 is connected with first extension spring 61 through first screwed hole on the boxes 1; Second set screw 52 is connected with second extension spring 62 through second screwed hole, the clear opening on the light wall pipe 4 on the boxes 1; The clear opening heart on the Kong Xinyu light wall pipe 4 of the first screwed hole hole heart, second screwed hole all is positioned on the half the plane of boxes 1 height, and these three hole hearts are positioned on the straight line, and this straight line is the diameter of light wall pipe 4 and the diameter of boxes 1; First extension spring 61 is connected with the lateral wall of light wall pipe 4, and second extension spring 62 is connected with the madial wall of light wall pipe 4;
Rare earth doped fiber 7 gets in the boxes 1 through first small through hole 21 that is located at heat-insulating cover 2, after spiral sticks on light wall pipe 4 lateral walls, passes from second small through hole 22 that is located at heat-insulating cover 2.
Boxes 1 is cuboid or oval cylinder; Light wall pipe 4 is an elliptical tube.
Light wall pipe 4 is 1mm～3mm; The height of light wall pipe 4 is 60%～95% of boxes 1 height.
Boxes 1 is that asbestos or expanded perlite are processed with heat-insulating cover 2 by heat-insulating material, and light wall pipe 4 is made by spring steel.
The temperature regulating range of temperature controller 31 is-50 ℃～150 ℃.
Temperature controller load 32 is heater load or cooler load or heater load and cooler load.
Through temperature controller 31, temperature controller load 32, when reducing the temperature in the boxes 1, shrinkage appears in light wall pipe 4; At this moment; Regulate second set screw, second extension spring occur to be stretched, thereby make that stretching appears in the zone near the second extension spring tie point on light wall pipe 4 lateral surfaces; Compression appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; Through temperature controller 31, temperature controller load 32; When increasing the temperature in the boxes 1, heat expansion appears in light wall pipe 4, regulates first set screw this moment; Make first extension spring occur stretching; Thereby make that compression appears in the zone near the first extension spring tie point on light wall pipe 4 lateral surfaces, stretching appears in the zone near clear opening on light wall pipe 4 lateral surfaces, and remaining zone is indeformable; The optical fiber that sticks on accordingly on light wall pipe 4 lateral surfaces keeps and the same distortion of light wall pipe 4 lateral surfaces, realizes improving the purpose of optical fiber stimulated Brillouin scattering threshold value.This device adjustable range is wide, flexible working mode.
Claims (6)
1. improve the temperature control equipment of optical fiber stimulated Brillouin scattering threshold value, it is characterized in that:
Comprise boxes (1), heat-insulating cover (2), temperature controller (31), temperature controller load (32), oval light wall pipe (4), first adjustment screw (51), second adjustment screw (52), first extension spring (61) and second extension spring (62);
Oval light wall pipe (4) is placed at the end in the boxes (1), and oval light wall pipe (4) and boxes (1) are concentric;
First screwed hole of first adjustment screw (51) on boxes (1) is connected with an end of first extension spring (61), and the other end of first extension spring (61) is connected with the lateral wall of the major axis of oval light wall pipe (4);
The clear opening of second adjustment screw (52) on second screwed hole on the boxes (1), light wall pipe (4) is connected with an end of second extension spring (62); The other end of second extension spring (62) is connected with the madial wall of the major axis of oval light wall pipe (4);
First screwed hole, second screwed hole are coaxial with the clear opening on the oval light wall pipe (4), all are positioned on boxes (1) height half the; First extension spring (61) and second extension spring (62) are coaxial with first adjustment screw (51) and second adjustment screw (52);
Temperature controller load (32) is placed in the boxes (1), is connected with temperature controller (31);
Rare earth doped fiber (7) gets in the boxes (1) through first small through hole (21) that is located at heat-insulating cover (2), after spiral sticks on oval light wall pipe (4) lateral wall, passes from second small through hole (22) that is located at heat-insulating cover (2).
2. the temperature control equipment of raising optical fiber stimulated Brillouin scattering threshold value according to claim 1 is characterized in that:
Described boxes (1) is cuboid or oval cylinder.
3. the temperature control equipment of raising optical fiber stimulated Brillouin scattering threshold value according to claim 1 is characterized in that:
The thickness of described oval light wall pipe (4) is 1mm～3mm; The height of oval light wall pipe (4) is 60%～95% of boxes (a 1) height.
4. the temperature control equipment of raising optical fiber stimulated Brillouin scattering threshold value according to claim 1 is characterized in that:
Described boxes (1) is that asbestos or expanded perlite are processed with heat-insulating cover (2) by heat-insulating material, and described oval light wall pipe (4) is made by spring steel.
5. the temperature control equipment of raising optical fiber stimulated Brillouin scattering threshold value according to claim 1 is characterized in that:
The temperature regulating range of described temperature controller (31) is-50 ℃～150 ℃.
6. the temperature control equipment of raising optical fiber stimulated Brillouin scattering threshold value according to claim 1 is characterized in that:
Described temperature controller load (32) is heater load or cooler load or heater load and cooler load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101049365A CN102231470B (en) | 2011-04-26 | 2011-04-26 | Temperature controlling device for increasing fiber SBS (Stimulated Brillouin Scattering) threshold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101049365A CN102231470B (en) | 2011-04-26 | 2011-04-26 | Temperature controlling device for increasing fiber SBS (Stimulated Brillouin Scattering) threshold |
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| CN102231470A CN102231470A (en) | 2011-11-02 |
| CN102231470B true CN102231470B (en) | 2012-06-13 |
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| CN2011101049365A Expired - Fee Related CN102231470B (en) | 2011-04-26 | 2011-04-26 | Temperature controlling device for increasing fiber SBS (Stimulated Brillouin Scattering) threshold |
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| CN102879093B (en) * | 2012-09-25 | 2014-10-01 | 中国科学院上海光学精密机械研究所 | Device for Measuring Stimulated Brillouin Scattering Gain Spectrum of Low Temperature Optical Fiber |
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| US7486852B2 (en) * | 2005-07-20 | 2009-02-03 | Northrop Grumman Corporation | Apparatus and method for suppression of stimulated brillouin scattering in an optical fiber |
| EP1764633A1 (en) * | 2005-09-09 | 2007-03-21 | Draka Comteq B.V. | Optical fiber with reduced stimulated brillouin scattering |
| US20080205839A1 (en) * | 2007-02-28 | 2008-08-28 | Scott Robertson Bickham | Large effective area high SBS threshold optical fiber |
| CN201616583U (en) * | 2009-12-30 | 2010-10-27 | 北京交通大学 | Apparatus for Improving Stimulated Brillouin Scattering Threshold of Optical Fiber Amplifier |
| CN101800396A (en) * | 2010-02-03 | 2010-08-11 | 中国人民解放军国防科学技术大学 | Stimulated Brillouin scattering (SBS) suppression method for narrow band fiber Raman amplifier |
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