The physical implementation of a bipolar encoding scheme suitable for fiber optic networks is reported with both experimental and theoretical results. The power spectrum of an erbium-doped superfluorescent fiber source is encoded, the bipolar correlations of the codes are verified, and rejection of multiple-access interference is demonstrated in a fiber-based testbed. Simulations of the correlation process identify key optical parameters and physical characteristics important to the design of future systems. A modification to the experimental testbed made according to the theoretical analysis results in improved correlation performance.

This work was jointly sponsored by the Texas Advanced Technology Program and the U.S. Air Force Office of Scientific Research.

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