Stimulated Raman scattering for various fiber types and walk-off lengths

Abstract

Performance analysis is carried out to evaluate the bit error rate (BER) performance limitation of a WDM transmission system imposed by crosstalk due to stimulated Raman scattering. Power penalty evaluated at a BER of 10-9 shows a significant impact of Raman induced crosstalk on the number of wavelengths that can be transmitted. Penalty is higher at higher input power, higher number of channels and higher bit rates used for transmission. Various types of optical fiber have been explored in the numerical assessment and various walk off lengths have been tried.