Chinese Journal of Lasers, Volume. 36, Issue 5, 1047(2009)
Experiment Study on a Tunable Fiber Laser Using Optical Circulator and Tunable Fiber Bragg Gratings
A simple and effective tunable fiber laser is presented. The linear-cavity laser consists of a three-port optical circulator (OC), a tunable fiber Bragg grating (TFBG), a segment of high-concentration erbium doped fiber (EDF), and a wavelength division multiplexing (WDM) coupler. By using an OC as the total-reflection mirror and a strain-induced uniform FBG as a partial-reflection mirror and a wavelength selector, a tunable wavelength is obtained. With single TFBG, a single wavelength lasing with a maximum wavelength tuning range of 6.00 nm, from 1543.50 to 1549.50 nm, is achieved experimentally. Within this tuning range, the full-width at half maximum (FWHM) of the laser output is smaller than 0.01 nm and the side mode suppression ratio (SMSR) is better than 50 dB.
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Li Jian, Liu Peng, Wang Jing, Zheng Jingjing, Jiang Weiwei, Ning Tigang, Jian Shuisheng. Experiment Study on a Tunable Fiber Laser Using Optical Circulator and Tunable Fiber Bragg Gratings[J]. Chinese Journal of Lasers, 2009, 36(5): 1047