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23 August 2002 ASE noise induced by parametric gain of pump in fiber Raman amplifiers
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Proceedings Volume 4906, Optical Components and Transmission Systems; (2002)
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China
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.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wenning Jiang, Jianping Chen, Tao Shang, and Guiling Wu "ASE noise induced by parametric gain of pump in fiber Raman amplifiers", Proc. SPIE 4906, Optical Components and Transmission Systems, (23 August 2002);

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