Share Email Print
cover

Proceedings Paper • new

High-speed secure optical communication with physical random temporal encryption
Author(s): Ning Jiang; Anke Zhao; Yiqun Zhang; Shiqin Liu; Kun Qiu
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In conventional optical communication systems, the transmission signals are regular digital signals. Due to the openness of optical fiber networks, it is rather easy for eavesdroppers to obtain the transmission signals from the public fiber-link and then intercept the message directly. To address this crucial security challenge, in this work we propose a high-speed secure optical communication system in virtue of physical random temporal encryption based on private physical random phase modulation and phase-to-intensity conversion. The proposed physical random temporal encryption is performed by a module composed of a phase modulator (PM) and a chirped fiber Bragg grating (CFBG), and the corresponding decryption is achieved with a similar module composed of an inverse-phase driven PM and an oppositedispersion CFBG. By distributing a constant-amplitude random-phase signal to the local semiconductor lasers deployed in the encryption module and decryption module, a pair of synchronized physical random PM driving signals that are not exchanged on public link can be independently generated, which guarantees the receiver end can correctly decrypt the original transmission message. Our numerical results demonstrate that with the proposed encryption scheme, the regular transmission signal is encrypted as a noise-like signal that can greatly enhance the security of message, and moreover, based on the private synchronized physical random phase modulation, the privacy of encryption and decryption are guaranteed, which prevents the eavesdroppers from intercepting transmission message. This work provides a promising strategy for the implement of high-speed high-security physical-layer optical communication.

Paper Details

Date Published: 20 November 2019
PDF: 5 pages
Proc. SPIE 11192, Real-time Photonic Measurements, Data Management, and Processing IV, 1119204 (20 November 2019); doi: 10.1117/12.2538009
Show Author Affiliations
Ning Jiang, Univ. of Electronic Science and Technology of China (China)
Anke Zhao, Univ. of Electronic Science and Technology of China (China)
Yiqun Zhang, Univ. of Electronic Science and Technology of China (China)
Shiqin Liu, Univ. of Electronic Science and Technology of China (China)
Kun Qiu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11192:
Real-time Photonic Measurements, Data Management, and Processing IV
Ming Li; Bahram Jalali; Mohammad Hossein Asghari, Editor(s)

© SPIE. Terms of Use
Back to Top