Abstract
This paper addresses the relation between fabrication imperfections and
the performance of a photonic crystal Coupled Resonator Optical Waveguide
(CROW). A semi-analytical model is presented, which calculates the
perturbation of the coupling coefficients through their derivatives with
respect to geometric characteristics of the rods of the photonic crystal
lattice. Once these derivatives are calculated, it becomes possible to
estimate the transfer functions of a large number of randomly perturbed
devices at a small additional computational cost. This enables the
statistical study of many performance issues of CROWs, such as the amplitude
and position of the device's resonances. The model can be used to study the
influence of imperfections of different strengths and types on CROWs of
various lengths.
© 2009 IEEE
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