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Generation of orthogonal codes with chaotic optical systems

D. Rontani, A. Locquet, M. Sciamanna, D. S. Citrin, and A. Uchida

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Abstract

We propose to use an electro-optic oscillator based on two Mach–Zehnder modulators in two different delayed feedback loops to generate two orthogonal chaotic spreading sequences (codes). We numerically demonstrate, for such codes, spectrally efficient multiplexing and demultiplexing of two digital data streams at multi-Gb/s rates using chaos synchronization and covariance-based detection.

© 2011 Optical Society of America

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