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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 12248–12260

Performance comparison of 0/π- and ± π/2-phase-shifted superstructured Fiber Bragg grating en/decoder

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

Optics Express, Vol. 19, Issue 13, pp. 12248-12260 (2011)

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We compare the performances of the 0/π-phase-shifted SSFBG (0/π-SSFBG) and the ± π/2-phase-shifted SSFBG (± π/2-SSFBG) en/decoders in the three aspects: the security, coding and system performances. In terms of the security performance, we evaluate the security performance by the investigation on the encoded waveform of both encoders. We also propose and demonstrate the code extraction technique for the ± π/2-SSFBG encoder when input pulse has large pulse width. Then, we analyze the coding performance of these two kinds of en/decoders by the calculation of autocorrelation and cross-correlation with sets of 31-chip, 63-chip and 127-chip Gold codes. Furthermore, we propose and demonstrate the hybrid use of both en/decoders. To demonstrate the performance of both en/decoders and the hybrid use in the different systems, we employ four 31-chip 640 Gchip/s 0/π-SSFBG and ± π/2-SSFBG en/decoders in the 4-user 10 Gbps/user on-off keying and differential phase-shift keying OCDMA systems.

© 2011 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(060.4785) Fiber optics and optical communications : Optical security and encryption

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 23, 2011
Revised Manuscript: May 27, 2011
Manuscript Accepted: June 1, 2011
Published: June 9, 2011

Bo Dai, Zhensen Gao, Xu Wang, Nobuyuki Kataoka, and Naoya Wada, "Performance comparison of 0/π- and ± π/2-phase-shifted superstructured Fiber Bragg grating en/decoder," Opt. Express 19, 12248-12260 (2011)

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