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Nuevos dispositivos fotónicos basados en la EIT

José Luis Arce Diego, Félix Fanjul-Vélez, Noé Ortega-Quijano, David Pereda Cubián

Published Sep 1, 2006• 0 citations
OpenAlex

Abstract

All optical devices are very important for developing new optical communications systems and in photonic processing. Electromagnetic Induced Transparency (EIT) is a new optical effect and makes it possible new non linear effects in materials with interactions between three or more atomic levels. In this work, a study of this new kind of interaction in three level system media is presented. Its potential applications in devices like optical wavelength converters, optical switchers, optical memories, optical routers and optical filters, that can be implemented by means of different optical structures and materials, are also presented. These photonic devices could use low level power pumping.

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All optical devices are very important for developing new optical communications systems and in photonic processing. Electromagnetic Induced Transparency (EIT) is a new optical effect and makes it possible new non linear effects in materials with interactions between three or more atomic levels. In this work, a study of this new kind of interaction in three level system media is presented. Its potential applications in devices like optical wavelength converters, optical switchers, optical memories, optical routers and optical filters, that can be implemented by means of different optical structures and materials, are also presented. These photonic devices could use low level power pumping.
All optical devices based on nonlinear effects that use low-level power pumping acquire a great importance in optical communications systems and photonic processing. These optical devices can be implemented by means of different structures and materials. For instance, Fabry-Perot vertical microcavities, whispering gallery based microcavities or hybrid system of photonic crystal microcavities can improve their performance and so make possible a real implementation. In this research work we review the properties of optical media with three-level systems in which electromagnetically induced transparency has been induced. We analyse the effect of including such kind of material in an optical microcavity of the order of wavelenghts. Transmission properties like as the quality factor, the peak of transmission, the power of the coupling field in these microcavities with very small volume and very high non-linear Kerr coefficients will be analysed. Their application for developing new all-optical photonic devices for the next generation of all-optical networks, optical packets switching networks, and quantum information processing will be presented.
We describe some interesting linear and nonlinear optical properties of three-level electromagnetically induced transparency (EIT) systems, such as absorption reduction, sharp dispersion change, and enhanced Kerr nonlinearity. These novel optical properties are very useful in enhancing efficient nonlinear optical processes, which can find applications in optoelectronic devices. We present some experiments done in our group in the past few years with three-level atomic systems, especially more recent experiments with EIT medium inside an optical cavity.
Electromagnetic induced transparency (EIT) [1] is a technique that offers a possibility to dynamically engineer the susceptibilities of materials, potentially allowing for large increases in the density of photonic components, as well as the development of functions of impossible implementation with existing integrated optical technologies. The increase in density is due to the order of magnitude decrease in interaction lengths and the potential ultra-low power dissipation in adiabatic structures. In this work we show a possible application of EIT in producing an extremely selective wavelength coupler filter. We next study the performance and limitations of the device with respect to the physical parameters involved.
Using detailed numerical simulations, and analytical theory, we study properties of micro-cavities which incorporate materials that exhibit Electro-magnetically Induced Transparency (EIT) or Ultra Slow Light (USL). We find that such systems, while being miniature in size (order wavelength), and integrable, can have some outstanding properties. In particular, they could have lifetimes orders of magnitude longer than other existing systems, and could exhibit non-linear all-optical switching at single photon power levels. Potential applications include miniature atomic clocks, and all-optical quantum information processing.