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Opt Lett. 2006 Sep 1;31(17):2568-70.

Minimizing finite-size effects in artificial resonance tunneling structures.

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  • 1Department of Physics and Institute for Optical Sciences, University of Toronto, Toronto, Canada.


We consider finite-size effects in coupled cavity structures. Starting with microring resonator structures well described by transfer matrices, we obtain conditions that lead to the minimization of finite-size effects. Our approach does not require numerical optimization and requires only slight modification of design parameters guided by closed-form analytical expressions. Using a Breit-Wigner scattering formalism, we demonstrate that the scheme can be used to minimize finite-size effects in a general class of coupled cavity structures. The strength of the present technique lies in its simplicity and its applicability to a wide variety of structures described by tight-binding formalisms.

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