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Proceedings Paper

Low noise fiber laser based on gain feedback in a rare-earth doped fiber amplifier chain
Author(s): Hongdan Wan; Yue Gong; Xianqin Li; Jinlong Chen; Peichun Wu; Xiaohan Sun
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Paper Abstract

We demonstrate a low noise fiber laser (LN-FL) based on gain feedback controlled high efficiency fiber amplifier chain (FAC) which connect with other optical devices in a circle manner. The FAC contains two cascaded fiber amplifiers with core pumped and double-clad pumped Erbium and Erbium-Ytterbium co-doped fibers. Gain saturation effect and amplified spontaneous emission noise in the FAC is analyzed and suppressed through gain control method. Lasing mode in the LN-FL is stabilized with fiber pigtails setting in special orbits and ensuring fiber device splicing loss low without any filters. For continuous wave operation, mode-hopping free laser spectrum with output power of 2W and SNR of 50dB is achieved. The narrowest bandwidths are about 0.2nm and 0.01nm for lasing cavity without and with filters, respectively. Lasing wavelength can be tuned in a wavelength span of 7nm by adjusting of a fiber pigtailed polarization controller. Pulsed operation of the laser under different pump seeds injection is experimental investigated and analyzed.

Paper Details

Date Published: 15 February 2012
PDF: 7 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823721 (15 February 2012); doi: 10.1117/12.903943
Show Author Affiliations
Hongdan Wan, Southeast Univ. (China)
Yue Gong, Wuxi Zhongxing Optoelectronics Technologies Co., Ltd. (China)
Xianqin Li, Wuxi Zhongxing Optoelectronics Technologies Co., Ltd. (China)
Jinlong Chen, Wuxi Zhongxing Optoelectronics Technologies Co., Ltd. (China)
Peichun Wu, Wuxi Zhongxing Optoelectronics Technologies Co., Ltd. (China)
Xiaohan Sun, Southeast Univ. (China)


Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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