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Proceedings Paper

Experimental investigation on security of temporal phase coding OCDMA system with code-shift keying and differential phase-shift keying
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Paper Abstract

We experimentally demonstrate the security vulnerability in the temporal phase coding single-user differential phase-shift keying (DPSK) and code-shift keying (CSK) OCDMA systems with a DPSK demodulator. In the experiment, we build up the 2.5Gbit/s DPSK- and CSK-OCDMA systems. In the systems, we use two 31-chip 640 Gchip/s superstructured fiber Bragg grating encoders for the signal encoding. In the receiving side, we remove the decoders and utilize the DPSK demodulator to detect the encoded signals directly. We successfully achieve the error-free BER performance and obtaine the clear open eye diagrams using the detection without the proper decoding. It indicates the existence of the eavesdropping vulnerability in the both systems. Furthermore, we also discuss the principle of DPSK demodulation attack.

Paper Details

Date Published: 18 February 2011
PDF: 6 pages
Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79880M (18 February 2011); doi: 10.1117/12.887713
Show Author Affiliations
Bo Dai, Heriot-Watt Univ. (United Kingdom)
Zhensen Gao, Heriot-Watt Univ. (United Kingdom)
Xu Wang, Heriot-Watt Univ. (United Kingdom)
Nobuyuki Kataoka, National Institute of Information and Communications Technology (Japan)
Naoya Wada, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 7988:
Optical Transmission Systems, Switching, and Subsystems VIII
Yikai Su; Ernesto Ciaramella; Xiang Liu; Naoya Wada, Editor(s)

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