Chromatic Dispersion Monitoring Method Based on Semiconductor Optical Amplifier Spectral Shift in 40 Gbit/s Optical Communication Systems

Abstract

A remnant chromatic dispersion monitoring method based on spectral shift of a semiconductor optical amplifier is proposed for a high speed optical communication system with carrier suppressed return to zero format and single-channel speed of 40 Gbits. The monitoring performance can be optimized by carefully selecting the bandwidth and center wavelength of the optical filter. The dynamical monitoring range is ±60 psnm and the monitoring precision is about 5 psnm. This method is suitable for application in dynamical chromatic dispersion compensation of high speed optical communication systems. © 2007 Society of Photo-Optical Instrumentation Engineers.