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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 3 — Jan. 30, 2012
  • pp: 2255–2265

Physical-enhanced secure strategy in an OFDM-PON

Lijia Zhang, Xiangjun Xin, Bo Liu, and Jianjun Yu  »View Author Affiliations


Optics Express, Vol. 20, Issue 3, pp. 2255-2265 (2012)
http://dx.doi.org/10.1364/OE.20.002255


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Abstract

The physical layer of optical access network is vulnerable to various attacks. As the dramatic increase of users and network capacity, the issue of physical-layer security becomes more and more important. This paper proposes a physical-enhanced secure strategy for orthogonal frequency division multiplexing passive optical network (OFDM-PON) by employing frequency domain chaos scrambling. The Logistic map is adopted for the chaos mapping. The chaos scrambling strategy can dynamically allocate the scrambling matrices for different OFDM frames according to the initial condition, which enhance the confidentiality of the physical layer. A mathematical model of this secure system is derived firstly, which achieves a secure transmission at physical layer in OFDM-PON. The results from experimental implementation using Logistic mapped chaos scrambling are also given to further demonstrate the efficiency of this secure strategy. An 10.125 Gb/s 64QAM-OFDM data with Logistic mapped chaos scrambling are successfully transmitted over 25-km single mode fiber (SMF), and the experimental results show that proposed security scheme can protect the system from eavesdropper and attacker, while keep a good performance for the legal ONU.

© 2012 OSA

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 2, 2011
Revised Manuscript: January 1, 2012
Manuscript Accepted: January 7, 2012
Published: January 17, 2012

Citation
Lijia Zhang, Xiangjun Xin, Bo Liu, and Jianjun Yu, "Physical-enhanced secure strategy in an OFDM-PON," Opt. Express 20, 2255-2265 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-3-2255


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