Performance estimation of WDM radio-over-fiber links under the influence of SRS induced crosstalk

Abstract

Stimulated Raman Scattering-(SRS) induced crosstalk is one of the sources of attenuation in optical fiber link. This paper focuses on the impact of modulation index on the SRS-induced crosstalk. The SRS-induced crosstalk has been reported against modulation frequency, optical power, and transmission length at varied modulation indexes. It is observed that there is significant effect of modulation index on the SRS-induced crosstalk. As the modulation index is increased from 0.3 to 0.9, the crosstalk levels are enhanced by 5 dB approx. It is also revealed that, when modulation frequency is increased, the crosstalk is decreased. Crosstalk increases with increasing optical power and minor increase in the crosstalk levels with increasing transmission length.