Kuizhi Huanga, Binbin Yana, Xiao Chenb, Gengxiang Chenc, Qi Aib, Kuiru Wanga,
Yiquan Wangb, Ying Zhangb, Feijun Songa, b, Qiang Wud, and Xinzhu Sanga, *
a State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts
and Telecommunications), P.O. Box72 (BUPT), Beijing 100876, China
b College of Science, Minzu University of China, Beijing 100081, China
c School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
d Photonics Research Centre, Dublin Institute of Technology, Dublin 8, Ireland
*e-mail: xzsang@bupt.edu.cn
Received May 18, 2012
Abstract—A high stable wavelength-tunable fiber laser is experimentally demonstrated by using a digital-micro-
mirror-device (DMD) processor and a polarization-maintaining erbium-doped fiber amplifier (EDFA).The elec-
tronic-addressed DMD processor is able to select and couple a waveband from of the polarization-maintaining
EDFA back into the fiber ring to generate a narrow line-width laser output. The tunable fiber laser shows a line-
width of 0.02 nm, a tuning step of 0.08 nm over the c-band and a side mode suppression ratio (SMSR) greater than
50 dB. The output power uniformity of 0.01 mW is achieved by using the automatic power control (APC) system
under room temperature. The center wavelength fluctuation during 1 h is below 0.01 nm.
DOI: 10.1134/S1054660X12120146
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