Contribution to the modeling of coupled resonator optical waveguides in photonic crystals
Abstract
In this thesis, coupled resonator optical waveguides are analyzed and a new analytical model to study their spectral properties is developed. Coupled mode theory and plane wave expansion are employed in order to study the spectral properties of CROWs and a new semianalytical model is derived. This semianalytical model is used for derivation of an analytical solution for the device’s resonant frequencies. The model not only provides a useful tool in the design of CROW based devices but also presents a useful physical insight for the device under investigation. The semianalytical model is also used in several types of coupled cavity devices, as is a SCISSOR, and is compared with other methods, such as FDTD, in order to test the validity and accuracy of the results. All approximations and assumptions that lead to a simplification of the model are being discussed. Furthermore the relation between fabrication imperfections and the performance of photonic crystal CROWs is examined based on t ...
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