Rigorous Assessment of Small Signal RIN Analysis for Single Mode Fiber with Higher Order Dispersion

摘要

In this paper relative intensity noise (RIN) in optical communication systems with fiber non-linearities due to Optical Kerr effects and higher order dispersion has been investigated. The impact of modulation frequencies, launch power and laser bias current on RIN has been illustrated. It is shown that RIN increases with modulating frequencies up to the resonance frequency, launch power, and decrease in the laser bias current. It is also shown that higher order dispersion term has no impact on the RIN but with first order dispersion compensation, the higher order dispersion terms have significant impact at high modulating frequencies. The RIN with and without fiber nonlinearities is further investigated. It has been shown that the RIN with fiber non- linearity is more than the RIN without nonlinearity and the effect of nonlinearity appears at higher modulation frequencies only.