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Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold

A fiber amplifier, stimulated Brillouin technology, applied in the direction of laser scattering effect, laser, laser parts, etc., can solve the problems of small fiber expansion, complicated device process, and fiber can no longer be used, and achieves the improvement of the scattering threshold, The effect of simple process and wide selection of materials

Inactive Publication Date: 2012-05-30
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the problems of complex technology of the existing device, unusable optical fiber, and small optical fiber stretching, and propose a double-greenhouse device with increased stimulated Brillouin scattering threshold of the single-frequency optical fiber amplifier

Method used

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  • Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold
  • Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold
  • Double greenhouse apparatus of single frequency fiber amplifier for raising stimulated Brillouin scattering threshold

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Experimental program
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Effect test

Embodiment approach 1

[0028] Dual-greenhouse setup with enhanced stimulated Brillouin scattering threshold for single-frequency fiber amplifiers, as Figure 1 to Figure 5As shown, the device includes a first heat insulation box 1, a second heat insulation box 2, a first heat conduction cover 13, a second heat conduction cover 23, a first temperature controller 16, a first temperature controller load 17, a second temperature controller 26. The second temperature controller load 27, the first thin elliptical half pipe 4, and the second thin elliptical half pipe 5.

[0029] The openings of the minor axes of the first thin ellipse half-pipe 4 and the second thin ellipse half-pipe 5 are parallel to each other, and are respectively placed in the first heat-insulating box 1 and the second heat-insulating box 2; the first thin ellipse half-pipe 4 and the second thin ellipse half-pipe The distance between the end surface of the axial opening of the half pipe 5 and the first heat conduction cover 13 and the ...

Embodiment approach 2

[0040] The difference between Embodiment 2 and Embodiment 1:

[0041] The distance between the end faces of the axial openings of the first thin elliptical half-pipe 4 and the second thin elliptical half-pipe 5 and the first heat-conducting cover 13 and the second heat-conducting cover 23 is 5 mm, respectively.

[0042] N=2, the first through-holes 31 in the first row, the second through-holes 32 in the first row, the first through-holes 41 in the second row, and the second through-holes in the second row are distributed on the first heat conduction cover 13 42.

[0043] A third row of first through holes 51 , a third row of second through holes 52 , a fourth row of first through holes 61 , and a fourth row of second through holes 62 are distributed on the second heat conduction cover 23 . The rare-earth-doped optical fiber 8 enters the first heat-insulating box 1 through the first through-hole 31 in the first row, is screw-bonded on the outer wall of the first thin elliptica...

Embodiment approach 3

[0048] The difference between the third embodiment and the first embodiment

[0049] The distance between the end faces of the axial openings of the first thin elliptical half-pipe 4 and the second thin elliptical half-pipe 5 and the first heat-conducting cover 13 and the second heat-conducting cover 23 is 15 mm, respectively.

[0050] N=100, the first through-hole 31 in the first row, the second through-hole 32 in the first row... the 100th through-hole 3100 in the first row and the second through-hole in the first row are distributed on the first heat conduction cover 13 The first through hole 41 of the second row, the second through hole 42 of the second row...the 100th through hole 4100 of the second row.

[0051] The second heat conduction cover 23 is distributed with the first through hole 51 of the third row, the second through hole 52 of the third row...the 100th through hole 5100 of the third row and the first through hole of the fourth row. hole 61 , the second thro...

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Abstract

The invention provides a double greenhouse apparatus of a single frequency fiber amplifier for raising stimulated Brillouin scattering threshold, belonging to the high rating narrow linewidth fiber laser and fiber amplifier field. According to the invention, the problems of complex technology, unable reuse of a fiber and small expansion of a fiber in present apparatus are solved. In the apparatus, the opening of the short shaft of a first thin elliptical half pipe (4) and the opening of the short shaft of a second thin elliptical half pipe (5) are positioned in a parallel way, and the first thin elliptical half pipe (4) and the second thin elliptical half pipe (5) are respectively arranged in a first heat insulation box (1) and a second heat insulation box (2). A first temperature controller load (17) and a second controller load (27) are respectively arranged in the first heat insulation box and the second heat insulation box, connecting a first temperature controller (16) and a second temperature controller (26) respectively. A rare earth doped fiber (8) enters the first heat insulation box, sticks the lateral wall of the first thin elliptical half pipe in a spiral way, goes through the first heat insulation and enters into the second heat insulation box, and sticks the lateral wall of the second thin elliptical half pipe in a spiral way. The rare earth doped fiber (8) enters the first heat insulation box again, sticks the lateral wall of the first thin elliptical half pipe in a spiral way, goes through the first heat insulation and enters the second heat insulation box,sticks the lateral wall of the second thin elliptical half pipe in a spiral way and goes out of the second box to complete the cycle.

Description

technical field [0001] The invention relates to a double-greenhouse device with improved stimulated Brillouin scattering threshold of a high-power single-frequency optical fiber amplifier, belonging to the fields of high-power narrow-linewidth optical fiber lasers and narrow-linewidth optical fiber amplifiers. Background technique [0002] Stimulated Brillouin scattering is a nonlinear process that occurs in an optical fiber, and its required incident power is much lower than that required by stimulated Raman scattering. Once the Brillouin scattering threshold is reached, stimulated Brillouin scattering will convert the vast majority of the input power into reverse Stokes waves [Govind P. Agrawal, Nonlinear Fiber Optics, Third Edition, San Diego, CA: Academic]. Clearly, stimulated Brillouin scattering limits the maximum power that can be transmitted by an optical fiber. In addition, if the stimulated Brillouin scattering cannot be completely suppressed, it will lead to rand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/30H01S3/042
Inventor 胡旭东宁提纲裴丽李晶温晓东郑晶晶冯素春王春灿邴亮
Owner BEIJING JIAOTONG UNIV
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