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Tunable and programmable fiber ring laser based on digital-controlled chirped fiber Bragg grating |
Huiqi LIAO, Ming TANG(), Hailiang ZHANG, Yiwei XIE |
National Engineering Laboratory of Next Generation Internet Access Networks (NGIA), School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract This paper proposed and experimentally demonstrated an all-fiber tunable and programmable bandpass filter using a linearly chirped fiber Bragg grating (CFBG). The center wavelength and spacing of the transmission peaks could be independently tuned via computer. The tunable range is about 18 nm. With this filter we demonstrated a tunable fiber ring laser which has an output power of about -7 dBm, full-width at half-maximum linewidth of ~0.017 nm which is limited by the resolution of the optical spectrum analyzer (OSA). Furthermore, a spacing tunable dual-wavelength fiber laser was achieved with the same setup. This all-fiber laser features advantages like simple structure, low cost, flexible and digital tuning capability.
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Keywords
chirped fiber Bragg grating (CFBG)
tunable filter
fiber ring laser
phase shift
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Corresponding Author(s):
TANG Ming,Email:tangming@mail.hust.edu.cn
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Issue Date: 05 December 2013
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