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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 7 — Jul. 1, 1982
  • pp: 835–838

Tunable nonlinear directional coupler

Dror Sarid and Murray Sargent III  »View Author Affiliations


JOSA, Vol. 72, Issue 7, pp. 835-838 (1982)
http://dx.doi.org/10.1364/JOSA.72.000835


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Abstract

We analyze the operation of a tunable device that is composed of two channel waveguides that are fabricated on a nonlinear substrate and of two adjacent electrodes, where the evanescent fields of the two guided modes overlap. The optical power-dependent propagation constant of the guided modes is modified locally as the power leaks from one channel waveguide to the other, resulting in a continuous change in the local phase matching. We present a general expression for the operation of the device together with a numerical example that demonstrates that the device acts as an all-optical gate, discriminator, and limiter, having a speed that is limited only by the transit time along the channels and the response time of the material.

© 1982 Optical Society of America

Citation
Dror Sarid and Murray Sargent III, "Tunable nonlinear directional coupler," J. Opt. Soc. Am. 72, 835-838 (1982)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-72-7-835

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