Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Xuelin Yang, Peng Zhou, Xiaonan Hu, Weisheng Hu

Shanghai Jiao Tong University, State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai 200240, China

Opt. Eng. 54(4), 046108 (Apr 24, 2015). doi:10.1117/1.OE.54.4.046108
History: Received November 16, 2014; Accepted April 3, 2015
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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 10Gbit/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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

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", Opt. Eng. 54(4), 046108 (Apr 24, 2015). ; http://dx.doi.org/10.1117/1.OE.54.4.046108


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