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Optics Communications

Saturable optical resonators with distributed Bragg-reflectors

Masahiro Okuda, Masafumi Toyota, Kiyoshi Onaka

Published Oct 1, 1976• 16 citations
Publisher
DOI
10.1016/0030-4018(76)90405-3

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Transient Behavior of a Saturable Optical Resonator with Distributed Bragg-Reflectors

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Transient behaviors of a saturable optical resonator with distributed Bragg-reflectors are analyzed in the scheme of time-dependent coupled wave equations. The up and down switching times of the saturable optical resonators are calculated for various values of the optical intensity, the width of incident pulse, and the relaxation time and the length of the saturable absorber. It is shown that the switching time of a saturable resonator has an optimum value for the optical intensity and the width of the incident pulse. Also, the switching time becomes shorter, as increasing the normalized length of the saturable absorber. However, even if the optimum values of the optical intensity and the width of the incident pulse are employed, the switching time is much larger than the transit time in the saturable resonator, because the transmission pulse is constructed by multiple reflections in the reflector.

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Bistability of Optical Resonator with Distributed Bragg-Reflectors by Using the Kerr Effect

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Bistability of an optical resonator with distributed Bragg-reflectors is analyzed by using the coupled-mode theory. Hysteresis and nonlinear properties are given as a function of the quantities characterizing the Kerr medium (the quadratic electrooptic coefficient n 2 and the length of the Kerr medium l ) and the propagation characteristics of the corrugated waveguide (the coupling coefficient k and the optical loss in the corrugated waveguide Γ). We show that the optical resonator with distributed Bragg-reflectors has a multi-valued transmission characteristic by the Kerr effect. From the numerical calculations, the up-switching and down-switching power intensities of bistable operation are estimated.

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Effect of Bleaching Property and Optical Loss on Bistability of Saturable Optical Resonators with Distributed Bragg-Reflectors

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The effect of the bleaching property of a saturable absorber and the optical loss in a corrugated waveguide on bistability is analyzed by using the coupled-mode theory. Hysteresis and nonlinear properties are given as a function of the quantities characterizing the saturable absorber (the absorption coefficient Γ 0 , and the length of saturable absorber l ) and the propagation characteristics of the corrugated waveguide (the coupling coefficient k and the optical loss in waveguide Γ). It is clear, by selecting the optimum values of these parameters., that the saturable optical resonator has a bistable property which is useful as an optical gate, an optical amplifier, and an optical memory in integrated optical circuits.

Japanese Journal of Applied Physics•Feb 1, 1977•10 citations

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Springer eBooks•Jan 1, 2014•3 citations
Transient behaviors of a saturable optical resonator with distributed Bragg-reflectors are analyzed in the scheme of time-dependent coupled wave equations. The up and down switching times of the saturable optical resonators are calculated for various values of the optical intensity, the width of incident pulse, and the relaxation time and the length of the saturable absorber. It is shown that the switching time of a saturable resonator has an optimum value for the optical intensity and the width of the incident pulse. Also, the switching time becomes shorter, as increasing the normalized length of the saturable absorber. However, even if the optimum values of the optical intensity and the width of the incident pulse are employed, the switching time is much larger than the transit time in the saturable resonator, because the transmission pulse is constructed by multiple reflections in the reflector.
Bistability of an optical resonator with distributed Bragg-reflectors is analyzed by using the coupled-mode theory. Hysteresis and nonlinear properties are given as a function of the quantities characterizing the Kerr medium (the quadratic electrooptic coefficient n 2 and the length of the Kerr medium l ) and the propagation characteristics of the corrugated waveguide (the coupling coefficient k and the optical loss in the corrugated waveguide Γ). We show that the optical resonator with distributed Bragg-reflectors has a multi-valued transmission characteristic by the Kerr effect. From the numerical calculations, the up-switching and down-switching power intensities of bistable operation are estimated.
The effect of the bleaching property of a saturable absorber and the optical loss in a corrugated waveguide on bistability is analyzed by using the coupled-mode theory. Hysteresis and nonlinear properties are given as a function of the quantities characterizing the saturable absorber (the absorption coefficient Γ 0 , and the length of saturable absorber l ) and the propagation characteristics of the corrugated waveguide (the coupling coefficient k and the optical loss in waveguide Γ). It is clear, by selecting the optimum values of these parameters., that the saturable optical resonator has a bistable property which is useful as an optical gate, an optical amplifier, and an optical memory in integrated optical circuits.