We introduce a high-order time-domain discontinuous spectral element method for the study of the optical coupling by evanescent whispering gallery modes between two microcylinders, the building blocks of coupled resonator optical waveguide devices. By using the discontinuous spectral element method with a Dubiner orthogonal polynomial basis on triangles and a Legendre nodal orthogonal basis on quadrilaterals, we conduct a systematic study of the optical coupling by whispering gallery modes between two microcylinders and demonstrate the successful coupling between the microcylinders and also the dependence of such a coupling on the separation and the size variation of the microcylinders.
© 2005 Optical Society of America
Original Manuscript: July 17, 2004
Manuscript Accepted: November 5, 2004
Published: May 1, 2005
Shaozhong Deng and Wei Cai, "Discontinuous spectral element method modeling of optical coupling by whispering gallery modes between microcylinders," J. Opt. Soc. Am. A 22, 952-960 (2005)