Article

Multiwavelength Raman fiber laser with a continuously-tunable spacing

School of Chemical and Biomedical Engineering, Nanyang Technological University, Tumasik, 00, Singapore
Optics Express (Impact Factor: 3.53). 05/2006; 14(8):3288-93. DOI: 10.1364/OE.14.003288
Source: PubMed

ABSTRACT A spacing-tunable multiwavelength Raman fiber laser with an independently-adjustable channel number is proposed and demonstrated. It uses a novel free-spectral-range (FSR)-tunable comb filter based on a superimposed chirped-fiber Bragg grating (CFBG) and a linear cavity formed by a bandwidth-tunable CFBG reflector, a pumped highly-nonlinear fiber for Raman gain, and an optical circulator based loop mirror. Multiwavelength laser operations with spacing tuning from 0.3 to 0.6 nm and channel number adjustment from 2 to 10 have been achieved.

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