Abstract

Chaos-based secure communication can provide a high level of privacy in data transmission. Here, we experimentally demonstrate secure signal transmission over two kinds of multimode fiber (MMF) based on electro-optic intensity chaos. High-quality synchronization is achieved in an electro-optic feedback configuration. Both $5\mathrm{Gbit}/\mathrm{s}$ carrier-less amplitude/phase (CAP-4) modulation and $10\mathrm{Gbit}/\mathrm{s}$ on–off key (OOK) signals are recovered efficiently in electro-optic chaos-based communication systems. Degradations of chaos synchronization and communication system due to mismatch of various hardware keys are also discussed.

© 2017 Optical Society of America

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