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Proceedings Paper

Research on all-fiber Q-switched fiber laser based on the hi-bi fiber Sagnac loop filter
Author(s): Chen Yong; Xiaopeng Dong; Lin Jun
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Paper Abstract

The Sagnac loop filter composed of the highly birefringent (Hi-Bi) fiber and a 3-dB coupler has been employed in the novel structure of Q-switched fiber laser in this paper. We use square-wave-driven PZT to modulate the filter, whose period is changed according to that of the wave. Therefore, the Hi-Bi fiber Sagnac loop filter will not only fulfill the function of choosing the wavelength of the laser but also serve as a Q-switching that changes the transmission ratio of the whole resonator. In the experiment of Q-switched fiber laser based on the ring resonator, the output laser pulse remains stable at an external frequency of 3 kHz-8 kHz. When the frequency is 3.2 KHz and the pump power is 19mw, the FWHM (Full Width at Half Maximum) of the pulse is approximately 10.5μs, and the average output power is 685.3μW, and the peak power is 41.1mW. Meanwhile, another novel structure of Q-switched fiber with linear resonator has also been studied in the paper.

Paper Details

Date Published: 12 May 2004
PDF: 4 pages
Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); doi: 10.1117/12.522127
Show Author Affiliations
Chen Yong, Univ. of Xiamen (China)
Xiaopeng Dong, Univ. of Xiamen (China)
Lin Jun, Univ. of Xiamen (China)

Published in SPIE Proceedings Vol. 5280:
Materials, Active Devices, and Optical Amplifiers
Connie J. Chang-Hasnain; Dexiu Huang; Yoshiaki Nakano; Xiaomin Ren, Editor(s)

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