Applications of CO2-induced long-period fiber gratings in Er-doped fiber amplifiers

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

doi:10.1117/12.445055

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17 October 2001 Applications of CO₂-induced long-period fiber gratings in Er-doped fiber amplifiers

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

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Proceedings Volume 4581, Passive Components and Transmission Systems; (2001) https://doi.org/10.1117/12.445055
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

In this paper, we describe the applications of novel long period fibre gratings written by high-frequency CO₂ laser pulses to Er-doped optical fiber amplifiers (EDFAs). Such a type of gratings has been used for both ASE (Amplified Spontaneous Emission) noise reduction and gain equalization of EDFAs for the first time to our knowledge. The ASE noise of two EDFAs used as a pre-amplifier and an in-line amplifier has been successfully reduced from 4.0dB to ~3.5dB and from ~4.8dB to ~4.3dB with a small-signal gain increase of ~7dB for the in-line amplifier, respectively. In addition, the gain profiles of other two EDFAs have been flattened to +/- 0.5dB by using the LPFGs fabricated.

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Yun-Jiang Rao, Tao Zhu, Zeng-Lin Ran, Ban-Mei Yu, and Yi-Ping Wang "Applications of CO₂-induced long-period fiber gratings in Er-doped fiber amplifiers", Proc. SPIE 4581, Passive Components and Transmission Systems, (17 October 2001); https://doi.org/10.1117/12.445055

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