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Proceedings Paper

Low-noise Er-doped fiber amplifiers using novel CO2-induced long-period fiber gratings
Author(s): Yun-Jiang Rao; Zeng-Lin Ran; Tao Zhu; Xiang Kai Zeng; Ban-Mei Yu; Yi-Ping Wang
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Paper Abstract

In this paper, we describe low-noise Er-doped optical fiber amplifiers (EDFAs) achieved by exploring novel long period fiber gratings (LPFG) fabrication technique is based on the thermal shock effect of high-frequency CO2 laser pulses at several kHz. By inserting such a LPFG in the Er-doped fiber, the ASE noise of the EDFA has been reduced considerably. Two low-noise EDFAs have been constructed and demonstrated. The ASE noise of the two EDFAs used as a pre- amplifier and an in-line amplifier has been successfully reduced from 4.0dB to approximately 3.5dB and from approximately 4.8dB to approximately 4.3dB with a small- signal gain increase of approximately 7dB for the in-line amplifier, respectively.

Paper Details

Date Published: 29 October 2001
PDF: 8 pages
Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); doi: 10.1117/12.446532
Show Author Affiliations
Yun-Jiang Rao, Chongqing Univ. (China)
Zeng-Lin Ran, Chongqing Univ. (China)
Tao Zhu, Chongqing Univ. (China)
Xiang Kai Zeng, Chongqing Univ. (China)
Ban-Mei Yu, Chongqing Univ. (China)
Yi-Ping Wang, Chongqing Univ. (China)


Published in SPIE Proceedings Vol. 4594:
Design, Fabrication, and Characterization of Photonic Devices II

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