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Soviet Journal of Quantum Electronics

Nonlinear Fabry-Perot interferometer as an optical medium for waves traveling parallel to reflecting planes

Yu. I. Balkareǐ, V. B. Sandomirskiǐ

Published Sep 30, 1986• 0 citations
Publisher

Abstract

An analysis is made of the propagation of an optical wave parallel to reflecting planes in an extended nonlinear Fabry-Perot interferometer pumped by a strong wave of the same intensity. It is shown that the nonlinear-optics self-interaction of the first wave changes drastically near certain parts of the main experimental characteristic of the interferometer, which is the dependence of the intensity of the transmitted light on the intensity of the pump wave. The acoustooptic interaction can change similarly in this interferometer.

DOI
10.1070/qe1986v016n09abeh007481

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An analysis is made of the propagation of an optical wave parallel to reflecting planes in an extended nonlinear Fabry-Perot interferometer pumped by a strong wave of the same intensity. It is shown that the nonlinear-optics self-interaction of the first wave changes drastically near certain parts of the main experimental characteristic of the interferometer, which is the dependence of the intensity of the transmitted light on the intensity of the pump wave. The acoustooptic interaction can change similarly in this interferometer.
In this paper we consider the nonlinear Fabry-Perot and its applications to optical signal and image processing. This paper addresses the signal processing aspects of a nonlinear Fabry-Perot interferometer with emphasis on image processing. The device geometry is shown in Figure 1. A thin nonlinear medium, whose refractive index is a function of the light intensity inside the Fabry-Perot is sandwiched between two plane parallel mirrors. The output as a function of input is shown in Fig. 2, for two different values of the difference between the Fabry-Perot low intensity resonance and the incident wavelength. The bistable curve in 2a is the origin of the term optical bistability and makes possible an optical memory, in which the output is a function of the history of the device. The Figure 2b represents a typical nonlinear transfer curve which may be used for signal processing. It can be seen that small changes in the input intensity Ic make large changes in the output intensity.
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