24 April 2015 All-optical encryption/decryption for nonreturn-to-zero differential phase-shift keying signals using four-wave mixing in semiconductor optical amplifier
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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.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xuelin Yang, Xuelin Yang, Peng Zhou, Peng Zhou, Xiaonan Hu, Xiaonan Hu, Weisheng Hu, 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 . Submission:
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