STUDY OF FIBER NONLINEARITIES IN COMMUNICATION SYSTEMS USING A VOLTERRA SERIES TRANSFER FUNCTION APPROACH

摘要

This paper uses a Volterra series transfer function to study the effects of linear dispersion and fiber nonlineari-ties on the reliability of information in optical fiber communication systems that use direct-detection. The output waveforms obtained using the Volterra series transfer function are compared with those obtained with the split-step Fourier method. We show the effect of the peak pulse power on the pulse shape and output RMS pulse-width in a simple system consisting of a single stretch of fiber. We present the effect of symbol period and peak pulse power on the signal-to-interference ratio at the detector. This analysis provides the basis for optimizing the design of more complex future systems and design optical equalizers to compensate for the fiber nonlinearities and inter-channel interference in already installed multi-user systems like wavelength-division multiple-access, time-division multiple-access, or code-division multiple-access systems.