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Optical Engineering

Optical encryption of parallel quadrature phase shift keying signals based on nondegenerate four-wave mixing in highly nonlinear fiber
Author(s): Yue Cui; Min Zhang; Yueying Zhan; Danshi Wang; Shanguo Huang
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Paper 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.

Paper Details

Date Published: 1 August 2016
PDF: 7 pages
Opt. Eng. 55(8) 086101 doi: 10.1117/1.OE.55.8.086101
Published in: Optical Engineering Volume 55, Issue 8
Show Author Affiliations
Yue Cui, Beijing Univ. of Posts and Telecommunications (China)
Min Zhang, Beijing Univ. of Posts and Telecommunications (China)
Yueying Zhan, Beijing Univ. of Posts and Telecommunications (China)
Danshi Wang, Beijing University of Posts & Telecommunication (China)
Shanguo Huang, Beijing Univ. of Posts and Telecommunications (China)


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