Analytical analysis on OSNR and transmission distance improvement in systems incorporating distributed Raman fiber amplifiers

Sihai Wang; Chongcheng Fan

doi:10.1117/12.445042

17 October 2001 Analytical analysis on OSNR and transmission distance improvement in systems incorporating distributed Raman fiber amplifiers

Sihai Wang, Chongcheng Fan

Author Affiliations +

Proceedings Volume 4581, Passive Components and Transmission Systems; (2001) https://doi.org/10.1117/12.445042
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

Analytical expressions of equivalent noise figure and other noise characteristics of distributed fiber Raman amplifier (DFRA) are derived, for the first time to the knowledge of the authors, including difference in polarization state and attenuation coefficients between pump and signal light(s) as well as multiple-wavelength pumping. Accordingly, their impact on DFRA performance and optical signal-to-noise ratio improvement ((Delta) OSNR) of a cascaded DFRA+EDFA is investigated. With increasing DFRA on-off gain, (Delta) OSNR increases first linearly and then logarithmically, leading to saturation. Results of this work agree well with existing work. Based on these results, some guidelines on DFRA design is proposed.

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Sihai Wang and Chongcheng Fan "Analytical analysis on OSNR and transmission distance improvement in systems incorporating distributed Raman fiber amplifiers", Proc. SPIE 4581, Passive Components and Transmission Systems, (17 October 2001); https://doi.org/10.1117/12.445042

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