Optical encryption of parallel quadrature phase shift keying signals based on nondegenerate four-wave mixing in highly nonlinear fiber

Yue Cui; Min Zhang; Yueying Zhan; Danshi Wang; Shanguo Huang

doi:10.1117/1.OE.55.8.086101

1 August 2016 Optical encryption of parallel quadrature phase shift keying signals based on nondegenerate four-wave mixing in highly nonlinear fiber

Yue Cui, Min Zhang, Yueying Zhan, Danshi Wang, Shanguo Huang

Author Affiliations +

Funded by: NSFC, Natural Science Foundation of China

Optical Engineering, Vol. 55, Issue 8, 086101 (August 2016). https://doi.org/10.1117/1.OE.55.8.086101

Abstract

A scheme for optical parallel encryption/decryption of quadrature phase shift keying (QPSK) signals is proposed, in which three QPSK signals at 10 Gb/s are encrypted and decrypted simultaneously in the optical domain through nondegenerate four-wave mixing in a highly nonlinear fiber. The results of theoretical analysis and simulations show that the scheme can perform high-speed wiretapping against the encryption of parallel signals and receiver sensitivities of encrypted signal and the decrypted signal are −25.9 and −23.8 dBm, respectively, at the forward error correction threshold. The results are useful for designing high-speed encryption/decryption of advanced modulated signals and thus enhancing the physical layer security of optical networks.

Citation Download Citation

Yue Cui, Min Zhang, Yueying Zhan, Danshi Wang, and Shanguo Huang "Optical encryption of parallel quadrature phase shift keying signals based on nondegenerate four-wave mixing in highly nonlinear fiber," Optical Engineering 55(8), 086101 (1 August 2016). https://doi.org/10.1117/1.OE.55.8.086101

Published: 1 August 2016

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