Comparison of coupled mode theory and FDTD simulations of coupling between bent and straight optical waveguides


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Stoffer, R. and Hiremath, K.R. and Hammer, M. (2004) Comparison of coupled mode theory and FDTD simulations of coupling between bent and straight optical waveguides. In: Microresonators as Building Blocks for VLSI Photonics, 18-25 October 2003, Erice, Italy.

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Abstract:Analysis of integrated optical cylindrical microresonators involves the coupling between a straight waveguide and a bent waveguide. Our (2D) variant of coupled mode theory is based on analytically represented mode profiles. With the bend modes expressed in Cartesian coordinates, coupled mode equations can be derived in a classical way and solved by numerical integration. Proper manipulation of the propagation matrix leads to stable results even in parameter domains of compact and/or radiative structures, which seemed unsuitable for a perturbational approach due to oscillations of the matrix elements along the propagation. Comparisons with FDTD calculations show convincing agreement.
Item Type:Conference or Workshop Item
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/65078
Official URL:http://dx.doi.org/10.1063/1.1764029
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