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The multimode photonic crystal resonator and its application to unidirectional optical energy transfer

B. LAZAR1, P. STERIAN1,*

Affiliation

  1. Academic Center for Optical Engineering and Photonics, Faculty of Applied Sciences, University “Politehnica” of Bucharest, Romania

Abstract

The current paper analyses the behavior of a photonic crystal cavity coupled with optical guides and able to transfer electromagnetic energy only in the forward direction. This simple photonic device with potential applications in photonic crystal microcircuits, especially intersection of guides, is studied, using “coupled mode theory” which is an approximate method that allows relatively simple derivations of optimal design parameters. Cavities coupled to guides appear everywhere in optical circuits. In many cases, they induce parasitic effects like important reflections back to the source. In other situations, if they are carefully tuned, optical devices consisting of micro resonators and guides can act as filters or unidirectional optical valves. The purpose of this article is to establish a procedure for designing an efficient intersection of guides, where the energy in one optical guide does not leak into the other, using a combination of analytical formula and numerical simulations..

Keywords

Photonic crystals, Waveguides, Multimode cavities, Reflection, Transmission coefficients, Optical guides.

Submitted at: Dec. 6, 2010
Accepted at: Jan. 26, 2011

Citation

B. LAZAR, P. STERIAN, The multimode photonic crystal resonator and its application to unidirectional optical energy transfer, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 1, pp. 32-40 (2011)