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

Bo Dai, Zhensen Gao, Xu Wang, Nobuyuki Kataoka, Naoya Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publicationOptical Transmission Systems, Switching, and Subsystems VIII
Volume7988
DOIs
Publication statusPublished - 2011
EventOptical Transmission Systems, Switching, and Subsystems VIII - Shanghai, China
Duration: 8 Dec 201012 Dec 2010

Conference

ConferenceOptical Transmission Systems, Switching, and Subsystems VIII
CountryChina
CityShanghai
Period8/12/1012/12/10

Keywords

  • Modulation format
  • Optical code division multiple access
  • Optical security and encryption

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