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Optics Communications

Proposal for all-optical controllable switch using dipole induced transparency (DIT)

K. Eftekhari, Karim Abbasian, A. Rostami

Published Jan 20, 2010• 9 citations
Publisher
DOI
10.1016/j.optcom.2009.12.064

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In this work, we propose an all-optical controllable double state switch using the dipole induced transparency effect applied on multilevel nanocrystal doped to photonic crystal (PC) cavity. Using the proposed structure, with applying one control field the absorbing medium converted to transparent one and switching operation is obtained and then applying the second control field changes the transparent PC cavity to opaque one again. Analytical relation for the proposed switch is presented and studied by investigation of effects of parameters on switching characteristics.
The proposed 1 × 8 and 8 × 1 all-optical controllable switch arrays can switch an optical pulse from an input port to one of eight output ports or from one of the eight input ports to only one output port. Where, the switching wavelength can be controlled by control fields to use for different optical pulses. In this paper dipole induced transparency (DIT) effect is used in photonic crystal quantum electrodynamics (PC-QED) cavity doped with a type three-level nano crystal as an all-optical switch.