Open AccessQuantum noise ciphered optical stealth communication based on equivalent spectral encoding
Author(s) -
Huatao Zhu,
Zhanqi Liu,
Xiang Peng,
Shuwen Chen,
Feiyu Li,
Xiangming Xu
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.471977
Subject(s) - optical communication , computer science , encoding (memory) , noise (video) , optics , quantum channel , channel (broadcasting) , phase noise , keying , physics , telecommunications , quantum , quantum information , quantum mechanics , artificial intelligence , image (mathematics)
To provide secure and covert transmission for optical communication system at the same time, a quantum-noise stream ciphered optical stealth communication approach is proposed for the first time. In the proposed system, the optical pulses are time spread by a chromatic dispersion device and then phase modulated with optical codes at chip rate to realize an equivalent spectral encoding. Binary optical codes are converted to multiple level phase-shift keying signal according to Y-00 protocol. The encoded optical signals are attenuated to mesoscopic coherent states and sent to a public channel. The ciphered signals are stealthy transmitted under public channel noise. The availability and covertness of the optical stealth channel is verified by system simulations.