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All-fiber superfluorescent light source

A super-fluorescence and all-fiber technology, applied in the field of laser communication, can solve the problems of damaging the pump source or gain fiber, laser oscillation, and affecting the super-fluorescence output, and achieve the effects of reducing reflectivity, increasing output power level, and novel structure

Inactive Publication Date: 2013-07-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the use of an end-pumped coupler, it is necessary to cut off a part of the fiber at the end face of the gain fiber for fusion splicing, and add devices such as isolators, resulting in multiple fusion points on the gain fiber, and the reflection of the melting point is easy to cause laser vibration, thus destroying Pump source or gain fiber, which affects the output of superfluorescence

Method used

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  • All-fiber superfluorescent light source
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  • All-fiber superfluorescent light source

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This embodiment describes an all-fiber superfluorescent light source, including: a gain fiber and a pump source, the pump source fiber is connected to the side of the gain fiber; the gain fiber is a complete one.

Embodiment 2

[0027] Such as figure 1 As shown, this implementation describes a single-point side connection, single-ended output all-fiber superfluorescent light source, including: a gain fiber 1 and a pumping source 2, a gaining fiber 1 runs through to the end, and the pumping source 2 optical fibers The connection to the side of the gain fiber 1 can be fusion splicing, colloid bonding, or direct bonding. There is one connection point, that is, one pump source.

[0028] The end face of the gain fiber 1 is subjected to feedback reduction treatment, such as angle cutting, angle polishing, or immersion in a refractive index matching solution. One end is a low-reflection end 3 with a reflectivity lower than 0.001%, and the other end is a high-reflection end 4 with a reflectivity higher than 1%. Hyperfluorescence is output from the low reflection end.

[0029] Gain fiber 1 is a gain fiber that is doped with various gain particles including erbium, ytterbium, neodymium, thulium and neodymium ...

Embodiment 3

[0032] Such as figure 2 As shown, this implementation records an all-fiber superfluorescent light source with single-point side connection and double-ended output. Its structure is basically similar to that of Embodiment 2, the only difference is that both ends of the gain fiber are processed into low-reflection ends 3. Its reflectivity is lower than 0.001%, and superfluorescence is output from both ends of the gain fiber simultaneously.

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PUM

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Abstract

The invention discloses an all-fiber superfluorescent light source. The all-fiber superfluorescent light source comprises a gain fiber and a pumping source, wherein a fiber of the pumping source is connected with the side surface of the gain fiber. The gain fiber is complete. By adopting side surface connection and the complete gain fiber, a disconnection fusion point is prevented from being generated on the gain fiber, laser oscillation caused by fusion point reflection can be prevented from damaging the pumping source or the gain fiber. Multi-point side surface connection can be adopted, and therefore output power levels can be improved wholly. The all-fiber superfluorescent light source is novel in structure and outstanding in feature, and high-power superfluorescence can be obtained.

Description

technical field [0001] The invention relates to the technical field of laser communication, in particular to an all-fiber super fluorescent light source. Background technique [0002] Hyperfluorescence is a transition state between laser and fluorescence, which is amplified spontaneous emission. Compared with the traditional super-luminescent light-emitting diode light source, the super-fluorescent light source has the advantages of high output power and long service life; in addition, compared with the laser, the super-fluorescent light source has no self-pulsation, no relaxation oscillation, Outstanding advantages such as no model competition. The Optical Society of China reported an article "Hundred-Watt All-Fiber Structure Broadband Superfluorescence Source Based on Ytterbium-doped Double-clad Optical Fiber". Longitudinal mode jumps, showing extremely high time stability. However, due to the use of an end-pumped coupler, it is necessary to cut off a part of the fiber ...

Claims

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Application Information

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IPC IPC(8): H01S3/091H01S3/067
Inventor 巩马理闫平肖起榕张海涛
Owner TSINGHUA UNIV
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