All-optical encryption/decryption for nonreturn-to-zero differential phase-shift keying signals using four-wave mixing in semiconductor optical amplifier

Xuelin Yang; Peng Zhou; Xiaonan Hu; Weisheng Hu

doi:10.1117/1.OE.54.4.046108

24 April 2015 All-optical encryption/decryption for nonreturn-to-zero differential phase-shift keying signals using four-wave mixing in semiconductor optical amplifier

Xuelin Yang, Peng Zhou, Xiaonan Hu, Weisheng Hu

Author Affiliations +

Funded by: National Science Fund of China, National Nature Science Foundation of China, National Nature Science Fund of China, Natural Science Foundation of China, Programs of Natural Science Foundation of China, National Science Foundation of China

Optical Engineering, Vol. 54, Issue 4, 046108 (April 2015). https://doi.org/10.1117/1.OE.54.4.046108

Abstract

By experiment we demonstrate an all-optical encryption/decryption scheme for nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) signals at 10 Gbit/s using all-optical exclusive-OR (XOR) logic. The key bit stream is performed by a pseudorandom bit stream. The all-optical XOR logic is achieved by nondegenerate four-wave mixing (FWM) in a semiconductor optical amplifier (SOA), which allows high data rate operation and asymmetric optical powers of the two input bit streams. The gain dynamics and pattern effect associated with the SOA carrier lifetime are alleviated due to the constant envelope of the NRZ-DPSK signals.

Citation Download Citation

Xuelin Yang, Peng Zhou, Xiaonan Hu, and Weisheng Hu "All-optical encryption/decryption for nonreturn-to-zero differential phase-shift keying signals using four-wave mixing in semiconductor optical amplifier," Optical Engineering 54(4), 046108 (24 April 2015). https://doi.org/10.1117/1.OE.54.4.046108

Published: 24 April 2015

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