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.
|Title of host publication||Microresonators As Building Blocks For VLSI Photonics|
|Subtitle of host publication||International School of Quantum Electronics, 39th Course|
|Editors||Francesco Michelotti, Alfred Driessen, Mario Bertolotti|
|Number of pages||12|
|Publication status||Published - Jun 2004|
|Name||AIP Conference Proceedings|