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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 20 — Jul. 10, 2001
  • pp: 3365–3370

Two-beam coupling modules for photorefractive optical circuits

Valéria B. Damião, Danielle L. Manuzak, William S. Bickel, and Dana Z. Anderson  »View Author Affiliations


Applied Optics, Vol. 40, Issue 20, pp. 3365-3370 (2001)
http://dx.doi.org/10.1364/AO.40.003365


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Abstract

Modules that perform photorefractive two-beam coupling operations have been built, characterized, and tested. These portable modules, interconnected by fiber optics, dispense with the need for repeated alignment and greatly facilitate the prototyping of complex signal- or image-processing photorefractive circuits. To evaluate the performance of the modules in a photorefractive circuit, we interconnected them in the feature extractor configuration: a ring configuration composed of two modules that selects the strongest signal within the signals presented on its input. With two signals at the input, an output contrast ratio of 45.4 dB is obtained for an input contrast ratio of 5 dB.

© 2001 Optical Society of America

OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(070.5010) Fourier optics and signal processing : Pattern recognition
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing
(200.4740) Optics in computing : Optical processing
(230.4320) Optical devices : Nonlinear optical devices

History
Original Manuscript: December 20, 1999
Revised Manuscript: January 31, 2001
Published: July 10, 2001

Citation
Valéria B. Damião, Danielle L. Manuzak, William S. Bickel, and Dana Z. Anderson, "Two-beam coupling modules for photorefractive optical circuits," Appl. Opt. 40, 3365-3370 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-20-3365

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