Abstract
We present an algorithm based on the finite-difference time-domain method for local refinement of a three-dimensional computational grid in space and time. The method has second-order accuracy in space and time as verified in the numerical examples. A number of test cases with material traverse normal to the grid interfaces were used to assess the long integration time stability of the algorithm. Resulting improvements in the computation time are discussed for a photonic crystal microcavity design that exhibits a sensitive dependence of the quality factor on subwavelength geometrical features.
Original language | English (US) |
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Pages (from-to) | 1237-1239 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 18 |
Issue number | 11 |
DOIs | |
State | Published - Jun 1 2006 |
Keywords
- Finite-difference time-domain (FDTD)
- Grid refinement
- Numerical simulations
- Photonic crystal microcavity
- Subgridding
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering