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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 14, Iss. 17 — Sep. 1, 1989
  • pp: 925–927

Pattern recognition with a bidirectionally coupled nonlinear-optical-element system

Kenju Otsuka  »View Author Affiliations


Optics Letters, Vol. 14, Issue 17, pp. 925-927 (1989)
http://dx.doi.org/10.1364/OL.14.000925


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Abstract

A parallel pattern-recognition system composed of coupled-element tristable optical components is proposed. Each elemental component is an optical ring resonator in which three cells of nonlinear refractive-index material are placed between mirrors. The basic idea is derived from the symmetry-breaking instability caused by the unbalance between counterpropagating input light fields that excite the nonlinear refractive-index material (the cell) bidirectionally. Input spatial patterns composed of the arbitrary combinations of [0, 0, 0], [1, 1, 0], [0, 1, 1], and [1, 0, 1] are found to be recognized at once, yielding the capacity of ⅔ bit/cell.

© 1989 Optical Society of America

History
Original Manuscript: December 29, 1988
Manuscript Accepted: June 7, 1989
Published: September 1, 1989

Citation
Kenju Otsuka, "Pattern recognition with a bidirectionally coupled nonlinear-optical-element system," Opt. Lett. 14, 925-927 (1989)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-14-17-925

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