Low-noise Er-doped fiber amplifiers using novel CO2-induced long-period fiber gratings

Yun-Jiang Rao; Zeng-Lin Ran; Tao Zhu; Xiang Kai Zeng; Ban-Mei Yu; Yi-Ping Wang

doi:10.1117/12.446532

29 October 2001 Low-noise Er-doped fiber amplifiers using novel CO₂-induced long-period fiber gratings

Yun-Jiang Rao, Zeng-Lin Ran, Tao Zhu, Xiang Kai Zeng, Ban-Mei Yu, Yi-Ping Wang

Proceedings Volume 4594, Design, Fabrication, and Characterization of Photonic Devices II; (2001) https://doi.org/10.1117/12.446532
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

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.

Citation Download Citation

Yun-Jiang Rao, Zeng-Lin Ran, Tao Zhu, Xiang Kai Zeng, Ban-Mei Yu, and Yi-Ping Wang "Low-noise Er-doped fiber amplifiers using novel CO₂-induced long-period fiber gratings", Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); https://doi.org/10.1117/12.446532

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