Chinese Optics Letters, 2012, 10 (s2): S21415, Published Online: Dec. 18, 2012
A method of narrow the optical line-width of the f iber laser 
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Abstract
A method with a simple configuration is demonstrated to narrow the spectrum line-width of the fiber lasers. The configuration consists of one coupler and four fiber Bragg gratings (FBGs). The number of longitudinal modes is decreased significantly using multi-cavities by comparing multi-cavities configuration with single-cavity configuration. The spectrum line-width is effectively narrowed. The whole system is simple in technology and low in cost.
Xiaodong Wen, Tigang Ning, Li Pei, Jing Li, Xudong Hu, Haidong You, Ting Feng. A method of narrow the optical line-width of the f iber laser[J]. Chinese Optics Letters, 2012, 10(s2): S21415.
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