Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Yue Cui, Min Zhang, Yueying Zhan, Danshi Wang, Shanguo Huang

Beijing University of Posts & Telecommunication, State Key Laboratory of Information Photonics and Optical Communication, Beijing 100876, China

Opt. Eng. 55(8), 086101 (Aug 01, 2016). doi:10.1117/1.OE.55.8.086101
History: Received April 18, 2016; Accepted July 11, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

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", Opt. Eng. 55(8), 086101 (Aug 01, 2016). ; http://dx.doi.org/10.1117/1.OE.55.8.086101


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