Dingkang Tanga, b, *, Jian-Guo Zhanga, c, and Yuanshan Liua
a State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics,
Chinese Academy of Sciences, Xi’an 710119, China
b Graduate School of Chinese Academy of Sciences, Beijing 100039, China
c Department of Engineering and Design, London South Bank University, 103 Borough Road, London SE1 0AA, UK
*e-mail: tangdingkang@opt.ac.cn
Received April 24, 2012; in final form, May 21, 2012; published online September 3, 2012
Abstract—We present the design of highly stable, passively mode-locked fiber lasers which are based on a sim-
ple configuration and require a low pump power for the generation of optical pulses with subpicosecond pulse-
width. Our designed fiber laser uses a semiconductor saturable absorber mirror to realize the self-starting, pas-
sive mode locking at a low pump power of 29 mW, with which a stable optical pulse train is obtained at the
fundamental repetition rate of 52.5 MHz and the central wavelength of 1557 nm. The output mode-locked opti-
cal pulses have a pulsewidth of 881 fs and an average output power of 1.78 mW, respectively.
DOI: 10.1134/S1054660X12100052
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