A single-frequency <i>Q</i>-switched erbium-doped fiber ring laser is implemented for producing a single frequency with 25-Mhz laser linewidth, <i>Q</i>-switched pulses with a high peak power at 1557.5 nm. The single longitudinal mode is selected by a distributed Bragg reflector fiber laser, and a fiber-optic Mach-Zehnder interferometer acts as a <i>Q</i>-switch. The peak power and the average power of the <i>Q</i>-switched pulses vary with the repetition rate.
© 2003 Optical Society of America
(060.2410) Fiber optics and optical communications : Fibers, erbium
(140.0140) Lasers and laser optics : Lasers and laser optics
(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
Anting Wang, Hai Ming, Jianping Xie, Xiyao Chen, Liang Lv, Wencai Huang, and Lixin Xu, "Single-Frequency Q-Switched Erbium-Doped Fiber Ring Laser by Combination of a Distributed Bragg Reflector Laser and a Mach-Zender Interferometer," Appl. Opt. 42, 3528-3530 (2003)