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Proceedings Article

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

[+] Author Affiliations
Bo Dai, Zhensen Gao, Xu Wang

Heriot-Watt Univ. (United Kingdom)

Nobuyuki Kataoka, Naoya Wada

National Institute of Information and Communications Technology (Japan)

Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79880M (February 18, 2011); doi:10.1117/12.887713
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From Conference Volume 7988

  • Optical Transmission Systems, Switching, and Subsystems VIII
  • Yikai Su; Ernesto Ciaramella; Xiang Liu; Naoya Wada
  • Shanghai, China | December 08, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Bo Dai ; Zhensen Gao ; Xu Wang ; Nobuyuki Kataoka and Naoya Wada
"Experimental investigation on security of temporal phase coding OCDMA system with code-shift keying and differential phase-shift keying", Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79880M (February 18, 2011); doi:10.1117/12.887713; http://dx.doi.org/10.1117/12.887713


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