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Proceedings Paper

ASE noise induced by parametric gain of pump in fiber Raman amplifiers
Author(s): Wenning Jiang; Jianping Chen; Tao Shang; Guiling Wu
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Paper Abstract

In long haul wavelength division multiplexing (WDM) optical transmission systems, fiber Raman amplifier will become an important subsystem because of its unique advantages. This paper is concentrated on one kind of noise in fiber Raman amplifiers—amplified spontaneous emission (ASE) noise induced by parametric gain (PG). When a strong optical wave (pump) propagates along a fiber, it creates a spectral region around it where a small optical wave (noise) may experience gain. This phenomenon is known as parametric gain (PG). Although the noise generated by PG around signal wavelength is very small, Raman effects under high pump power can amplify it to a relatively high level. It interacts with the signal and affects the system performance. In this paper, PG induced ASE noise in the optical fiber Raman amplifier is analyzed and the related expressions are present, including single pumping and WDM pumping. The ASE noise in a 5 pumps, 64 channels and gain-flattened fiber Raman amplifier systems is also calculated.

Paper Details

Date Published: 23 August 2002
PDF: 5 pages
Proc. SPIE 4906, Optical Components and Transmission Systems, (23 August 2002); doi: 10.1117/12.480538
Show Author Affiliations
Wenning Jiang, Shanghai Jiao Tong Univ. (China)
Jianping Chen, Shanghai Jiao Tong Univ. (China)
Tao Shang, Shanghai Jiao Tong Univ. (China)
Guiling Wu, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 4906:
Optical Components and Transmission Systems
WeiSheng Hu; Shoichi Sudo; Peter Kaiser, Editor(s)

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