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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 36, Iss. 21 — Nov. 1, 2011
  • pp: 4290–4292

Reconfigurable optical differential phase- shift-keying pattern recognition based on incoherent photonic processing

Antonio Malacarne, Reza Ashrafi, Yongwoo Park, and José Azaña  »View Author Affiliations


Optics Letters, Vol. 36, Issue 21, pp. 4290-4292 (2011)
http://dx.doi.org/10.1364/OL.36.004290


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Abstract

We propose and experimentally demonstrate asynchronous optical differential phase-shift-keying (DPSK) pattern recognition using a fully reconfigurable technique. The proposed method uses optical phase-to-bipolar intensity conversion through all-optical differentiation in conjunction with an incoherent time-spectrum convolution system where the pattern to be recognized is implemented directly in the spectral domain through optical amplitude-only linear filtering. Full reconfigurability in terms of bit rate, pattern sequence, and pattern length is achieved using electronically programmable optical filters. We demonstrate dynamically switching recognition of different 64 bit patterns in a continuous 12 Gb / s DPSK pseudorandom optical bit stream with contrast ratio up to 3.8 dB .

© 2011 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.5010) Fourier optics and signal processing : Pattern recognition
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(320.7085) Ultrafast optics : Ultrafast information processing

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: May 31, 2011
Revised Manuscript: October 1, 2011
Manuscript Accepted: October 2, 2011
Published: November 1, 2011

Citation
Antonio Malacarne, Reza Ashrafi, Yongwoo Park, and José Azaña, "Reconfigurable optical differential phase-shift-keying pattern recognition based on incoherent photonic processing," Opt. Lett. 36, 4290-4292 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-21-4290


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