The band-pass characteristic of fiber grating Michelson interferometer is analyzed, which acts as both band-pass filter and Q-switch. An erbium-doped fiber ring laser based on fiber grating Michelson interferometer is implemented for producing single longitudinal mode CW operation with 5 MHz spectral linewidth and up to 6 mW output power. In Q-switched operation, stable fiber laser output pulses with repetition rate of 800 Hz, pulse width of 0.6 ?s, average power of 1.8 mW and peak power of 3.4 W are demonstrated. The peak power and average power of the Q-switched pulses are varied with the repetitionrate.
© 2005 Chinese Optics Letters
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3570) Lasers and laser optics : Lasers, single-mode
Anting Wang, Hai Ming, Jianping Xie, Lixin Xu, Wencai Huang, Liang Lv, Xiyao Chen, Feng Li, Yunxia Wu, and Meishu Xing, "Erbium-doped CW and Q-switched fiber ring laser with fiber grating Michelson interferometer," Chin. Opt. Lett. 1, 28-30 (2003)