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Ultra-short length erbium and ytterbium codoping high gain glass optical fiber superfluorescence light source

A high-gain fiber and glass fiber technology, applied in the field of super-fluorescence light sources, can solve the problems of low side pumping efficiency, poor mode matching, and high requirements for optical path design.

Inactive Publication Date: 2008-09-03
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the structure of the pumping method used in the above patents is relatively complex, and it has higher requirements for the design of the optical path. Compared with end pumping, side pumping has the disadvantages of low efficiency, poor mode matching, and wavelength mismatch.
[0016] Domestic research on superfluorescence started late, and there is a vacancy for ultra-short-length erbium-doped superfluorescent fiber optic light sources

Method used

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  • Ultra-short length erbium and ytterbium codoping high gain glass optical fiber superfluorescence light source
  • Ultra-short length erbium and ytterbium codoping high gain glass optical fiber superfluorescence light source
  • Ultra-short length erbium and ytterbium codoping high gain glass optical fiber superfluorescence light source

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specific Embodiment 1

[0085] An ultra-short length erbium-ytterbium co-doped high-gain glass fiber superfluorescent light source, using such as image 3 The structure of (a), including: semiconductor laser (LD) 1, coupling lens system 2, signal light total reflection mirror 5, high-gain optical fiber 6 (pumping light input end is a vertically cut end 8, and the superfluorescent output end is an oblique angle End 7) Four parts. It is characterized by:

[0086] LD1 is Apollo's high-power semiconductor laser (model: S20-976-1) with a maximum output power of 9.20W and a center wavelength of 976nm;

[0087] The coupling lens system 2 is composed of a collimating lens 3 and a focusing lens 4, which can efficiently couple the pump light into the end face of the high-gain optical fiber 6;

[0088] The reflectivity of the signal light total reflection mirror 5 to the light of 1540nm and its vicinity is greater than 99%, and the reflectivity of the light of 976nm and its vicinity is less than 6%;

[0089]...

specific Embodiment 2

[0107] An ultra-short length erbium-ytterbium co-doped high-gain glass fiber superfluorescent light source, using such as image 3 The structure of (a), including: semiconductor laser (LD) 1, coupling lens system 2, signal light total reflection mirror 5, high-gain optical fiber 6 (pumping light input end is a vertically cut end 8, and the superfluorescent output end is an oblique angle End 7) Four parts. It is characterized by:

[0108] LD1 is Apollo's high-power semiconductor laser (model: S20-976-1) with a maximum output power of 9.20W and a center wavelength of 976nm;

[0109] The coupling lens system 2 is composed of a collimating lens 3 and a focusing lens 4, which can efficiently couple the pump light into the end face of the high-gain optical fiber 6;

[0110] The reflectivity of the signal light total reflection mirror 5 to the light of 1540nm and its vicinity is greater than 99%, and the reflectivity of the light of 976nm and its vicinity is less than 6%;

[0111]...

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Abstract

The invention provides an ultra-short length erbium-ytterbium co-doped high gain glass fiber superfluorescence light source which includes: a semiconductor laser (LD) 1, a coupling lens system 2 (including a collimating lens 3 and a focusing lens 4), a signal light total reflective mirror 5, a high gain fiber 6 (a pumped light input terminal is a vertical cutting terminal 8 in figure (a) structure and is a bevel terminal 7 in figure (b) structure, a superfluorescence output terminal is the bevel terminal 7 in figure (a) and (b)). The superfluorescence light source uses basic structure, and realizes superfluorescence output with high power, wide broad-band, stabile average wavelength in the ultra-short length high gain fiber. The ultra-short length erbium-ytterbium co-doped high gain glass fiber superfluorescence light source has has great practical value for future integrated optics, new generation fiber communications technology and fiber sensor technology.

Description

【Technical field】: [0001] The invention belongs to the field of optical fiber communication technology and optical fiber sensing technology, and specifically relates to a super fluorescent light source with high output power, wide bandwidth and stable average wavelength, invented based on ultra-short length special erbium-ytterbium co-doped high-gain glass fiber. 【Background technique】: [0002] With the development of optical fiber communication technology and optical fiber sensing technology, people put forward higher requirements for broadband light source, namely: high output power, wide bandwidth, good bandwidth flatness and stable output wavelength. Traditional commercial broadband light sources, such as light-emitting diodes (LEDs) and superluminescent diodes (SLDs), although they can provide a wide output bandwidth, their output power can only reach the μW level, and the spectral stability of the output light is poor. (10 -4 / °C), so they cannot meet the above requi...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/094H01S3/0941G02B6/00H04B10/02
Inventor 宋峰程振洲邹昌光韩琳于晓晨张家祥蒋雪萍田建国
Owner NANKAI UNIV
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