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Technical Physics

Mirror-free optical multistability of a nonlinear semiconducting plate in the form of a crossed Fabry-Perot resonator

P. I. Khadzhi, Vladimir A. Lichman, O. F. Pasechnik

Published Aug 1, 1993• 0 citations
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A new nonlinear fiber-based Fabry-Perot resonator (FFPR) is proposed for bistable optical devices in fiber optics, The device is constructed by embedding a metal-dielectric Fabry-Perot resonator containing a thermo-optic material into a single-mode fiber. The transmission and attenuation characteristics of the linear FFPR have been analyzed under Gaussian-beam approximation by the method of plane-wave expansion. The effects of the mirror separation, the thickness of the metal mirror, the coating number of the multilayer mirror, and the spacer index have been investigated numerically. Moreover optical bistability in the nonlinear FFPR has been investigated by the graphical solution. It has been found that the input-output characteristics of the proposed FFPR are strongly affected by the angular divergence of the beam in the spacer. Optical bistability has been demonstrated experimentally at the milliwatt-power levels by using a 1.3- mu m diode laser and single-mode fibers.>

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The theory of the optical multistability by two-photon resonant interaction is investigated. The nonlinear medium inside a Fabry-Perot cavity is in two-photon resonance with the laser beam. The two-photon equation of state including dynamical Stark shift and relaxation parameters is obtained and studied under mean-field approximation. The equations for both Fabry-Perot cavity and ring cavity take basically the same form. The physics mechanisms resulting in optical multistability are also studied. It has been shown that the combined effects of Kerr switching and saturation absorption switching can lead to two-photon optical double-bistability, tristability as well as bistability. Furthermore, the criterion conditions under which double-bistability or tristability can occur are given and discussed. Finally, the phase-conjugated reflectivity by two-photon four-wave mixing is also shown to exhibit multistability as well as hysteresis.

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Shenping Li, K.T. Chan

An all-optical fiber nonlinear Fabry-Perot resonator is proposed. The steady-state model for describing this resonator is developed. The transmission and refection bistabilities are shown numerically. Our results show that the bistability in this system is similar to that in a normal nonlinear Fabry-Perot etalon, except that the characteristics of the bistability can be changed not only by the cavity length but also by the phase shifts of the fiber loop mirrors.

Fiber & Integrated Optics•Jan 1, 1997•3 citations
A new nonlinear fiber-based Fabry-Perot resonator (FFPR) is proposed for bistable optical devices in fiber optics, The device is constructed by embedding a metal-dielectric Fabry-Perot resonator containing a thermo-optic material into a single-mode fiber. The transmission and attenuation characteristics of the linear FFPR have been analyzed under Gaussian-beam approximation by the method of plane-wave expansion. The effects of the mirror separation, the thickness of the metal mirror, the coating number of the multilayer mirror, and the spacer index have been investigated numerically. Moreover optical bistability in the nonlinear FFPR has been investigated by the graphical solution. It has been found that the input-output characteristics of the proposed FFPR are strongly affected by the angular divergence of the beam in the spacer. Optical bistability has been demonstrated experimentally at the milliwatt-power levels by using a 1.3- mu m diode laser and single-mode fibers.>
The theory of the optical multistability by two-photon resonant interaction is investigated. The nonlinear medium inside a Fabry-Perot cavity is in two-photon resonance with the laser beam. The two-photon equation of state including dynamical Stark shift and relaxation parameters is obtained and studied under mean-field approximation. The equations for both Fabry-Perot cavity and ring cavity take basically the same form. The physics mechanisms resulting in optical multistability are also studied. It has been shown that the combined effects of Kerr switching and saturation absorption switching can lead to two-photon optical double-bistability, tristability as well as bistability. Furthermore, the criterion conditions under which double-bistability or tristability can occur are given and discussed. Finally, the phase-conjugated reflectivity by two-photon four-wave mixing is also shown to exhibit multistability as well as hysteresis.