Optical implementation of bipolar codes

摘要

The physical implementation of a bipolar encoding scheme suitablenfor WDM fiber-optic networks is reported with both experimental andntheoretical results. The power spectrum of an erbium-dopednsuperfluorescent fiber source is encoded, the bipolar correlations ofnthe codes are verified, and rejection of multiple-access interference isndemonstrated in a fiber-based testbed. Simulations of the correlationnprocess identify key optical parameters and physical characteristicsnimportant to the design of future systems. A modification to thenexperimental testbed, made according to the theoretical analysis,nresults in improved correlation performance