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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 4 — Feb. 14, 2011
  • pp: 3503–3512

Bit-by-bit optical code scrambling technique for secure optical communication

Xu Wang, Zhensen Gao, Xuhua Wang, Nobuyuki Kataoka, and Naoya Wada  »View Author Affiliations

Optics Express, Vol. 19, Issue 4, pp. 3503-3512 (2011)

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We propose and demonstrate a novel bit-by-bit code scrambling technique based on time domain spectral phase encoding/decoding (SPE/SPD) scheme using only a single phase modulator to simultaneously generate and decode the code hopping sequence and DPSK data for secure optical communication application. In the experiment, 2.5-Gb/s DPSK data has been generated, decoded and securely transmitted over 34km by scrambling five 8-chip, 20-Gchip/s Gold codes with prime-hop patterns. The proposed scheme can rapidly reconfigure the optical code hopping sequence bit-by-bit with the DPSK data, and thus it is very robust to conventional data rate energy detection and DPSK demodulation attack, exhibiting the potential to provide unconditional transmission security and realize even one-time pad.

© 2011 OSA

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 29, 2010
Revised Manuscript: January 30, 2011
Manuscript Accepted: January 30, 2011
Published: February 8, 2011

Xu Wang, Zhensen Gao, Xuhua Wang, Nobuyuki Kataoka, and Naoya Wada, "Bit-by-bit optical code scrambling technique for secure optical communication," Opt. Express 19, 3503-3512 (2011)

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