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Integrated Photonics Research

All-Optical Switching in waveguides using Spatial EIT Concepts

Pavel Ginzburg, Meir Orenstein

Published Jan 1, 2006• 0 citations
Publisher

Abstract

3 variations of all-optical waveguide switches are presented, all based on spatial arrangements inspired by EIT concepts. By employing only linear effects, control of an optical signal is achieved with indefinitely weak optical gate.
DOI
10.1364/ipra.2006.imc3

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The optical solitons (temporal and spatial) are very promising for all-optical switching and logic gates due to stability and uniform phase along the pulse. Various schemes have been demonstrated (see, for instance, [1-4]), however in all those schemes the power of the control wave was more or comparable with the power of the signal wave. We propose a scheme where the control wave power is approximately 2-4% of the signal wave power. This scheme is based on the control of the bright spatial soliton interaction.
Optical waveguide switches based on spatial arrangements inspired by electromagnetic induced transparency (EIT) concepts are presented. Interferometric control of optical signal by an optical gate is accomplished in three configurations. The first is employing a direct spatial version of EIT, the second is exploiting space reciprocity to accomplish performance not achievable in the time domain EIT and finally a novel version of EIT, using tunneling, is transformed into the spatial domain. For all configurations - closed form analysis as well as actual device simulation are presented.