High flattening C+L-band erbium-doped superfluorescent light source with three-stage two-pumping structure

JIA Zhen-an; LI Li; QIAO Xue-guang; LIU Ying-gang

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High flattening C+L-band erbium-doped superfluorescent light source with three-stage two-pumping structure

Article | 更新时间：2020-08-13

- High flattening C+L-band erbium-doped superfluorescent light source with three-stage two-pumping structure
- Optics and Precision Engineering Vol. 18, Issue 3, Pages: 558-562(2010)
- 作者机构：
  
  1. 西安石油大学光电油气测井与检测教育部重点实验室,陕西西安,710065
  2. 西北大学,陕西西安,710069
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 July 2009，
  
  Revised：05 August 2009，
  
  Published Online：22 March 2010，
  
  Published：22 March 2010
- 稿件说明：
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贾振安，李丽，乔学光,，刘颖刚. 高平坦度的三级双泵浦结构C+L波段超荧光光源[J]. 光学精密工程, 2010,18(3):558-562

JIA Zhen-an, LI Li, QIAO Xue-guang, et al. High flattening C+L-band erbium-doped superfluorescent light source with three-stage two-pumping structure[J]. Optics and precision engineering, 2010, 18(3): 558-562.
贾振安，李丽，乔学光,，刘颖刚. 高平坦度的三级双泵浦结构C+L波段超荧光光源[J]. 光学精密工程, 2010,18(3):558-562 DOI：

JIA Zhen-an, LI Li, QIAO Xue-guang, et al. High flattening C+L-band erbium-doped superfluorescent light source with three-stage two-pumping structure[J]. Optics and precision engineering, 2010, 18(3): 558-562. DOI：

摘要

为了使掺铒光纤超荧光光源C波段与L波段光谱匹配良好，实现高平坦度的C+L波段宽带光源，提出了一种三级双泵浦光源结构。首先，使用三段不同型号、不同长度的掺铒光纤，两个980 nm激光二极管，波分复用器，隔离器以及3 dB耦合器构成的光纤环形镜搭建宽带光源实验装置；然后，通过不断优化三段掺铒光纤的长度，调节两级抽运源功率获得高平坦度C+L波段光源输出;最后对其产生机理进行分析。实验结果表明，当三段掺铒光纤的长度分别为11.5 m、53 m和6.5 m，两级抽运源功率分别为65 mW和115 mW时，输出光谱的3 dB带宽为75.68 nm，在1 543~1 603 nm波段光谱的平坦度<±1.3 dB（不加任何滤波器的条件下）。获得的高平坦度C+L波段宽带光源可以更好地满足光纤传感、光纤通信系统等领域的应用要求。

Abstract

In order to realize a high flattening C+L-band fiber source by C band matching L band closely

a superfluorescent light source structure with three-stage two-pumping is presented. Firstly

the experimental equipment is composed of three erbium-doped fibers

two 980 nm LDs

a Wavelength Division Multiplexer (WDM)

an isolater（ISO）and a 3 dB coupler. Then

a high flattening C+L-band fiber source is achieved by optimizing the lengths of three erbium-doped fibers and adjusting the powers of two pumps

and the mechanism of production is also analyzed. Experimental results indicate that when the lengths of three fibers are 11.5 m

53 m

6.5 m and the powers of the two pumps are 65 mW

115 mW respectively

the light source can offer a linewidth in 75.68 nm with a power ripple of 3 dB

and the flatness of the spectra from 1 543 nm to 1 603 nm is less than ±1.3 dB without any external spectral filters. The high flattening C+L-band superfluorescent light source can satisfy the requirements of the optical fiber sensing and optical fiber communication systems.

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