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Chinese Physics, 2005, Vol. 14(4): 779-784    DOI: 10.1088/1009-1963/14/4/024
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Switchable and spacing-tunable dual-wavelength erbium-doped fibre lasers

Feng Xin-Huan (冯新焕), Liu Yan-Ge (刘艳格), Sun Lei (孙磊), Yuan Shu-Zhong (袁树忠), Kai Gui-Yun (开桂云), Dong Xiao-Yi (董孝义)
Institute of Modern Optics, Nankai University, Tianjin 300071,China
Abstract  Two switchable and spacing-tunable dual-wavelength linear cavity erbium-doped fibre lasers are demonstrated experimentally. One of them utilizes a Bragg grating in polarization-maintained PANDA fibre and the other uses a Bragg grating in standard single mode fibre for wavelength selection. Both exploit the birefringence characteristics of the FBG induced by transverse strain. The proposed lasers can be made to operate in stable dual-wavelength or switch between two wavelengths at room temperature just by simple adjustment of a polarization controller. Transverse strain loading on the FBG allows the wavelength spacing to be controlled.
Keywords:  Erbium-doped fibre      fibre Bragg grating      fibre laser      dual-wavelength lasing      polarization- maintaining fibre  
Received:  08 June 2004      Revised:  23 November 2004      Accepted manuscript online: 
PACS:  42.81.-i (Fiber optics)  
  42.55.Wd (Fiber lasers)  
  42.60.By (Design of specific laser systems)  
  42.60.Fc (Modulation, tuning, and mode locking)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  42.79.Dj (Gratings)  
  78.20.Fm (Birefringence)  
Fund: Project supported jointly by the Tianjin Natural Science Foundation Projects (Grant No 033800211), by the State Key Development Programme for Basic Research of China (Grant No 2003CB314906) and by the National High Technology Development Programme of China (Grant No 2003AA312100).

Cite this article: 

Feng Xin-Huan (冯新焕), Liu Yan-Ge (刘艳格), Sun Lei (孙磊), Yuan Shu-Zhong (袁树忠), Kai Gui-Yun (开桂云), Dong Xiao-Yi (董孝义) Switchable and spacing-tunable dual-wavelength erbium-doped fibre lasers 2005 Chinese Physics 14 779

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