TY - GEN
T1 - Subgridding scheme for FDTD in cylindrical coordinates
AU - Mock, Adam
PY - 2011
Y1 - 2011
N2 - A grid resolution compensation scheme based on subgridding is proposed and evaluated for improving the performance of the finite-difference time-domain method implemented in cylindrical coordinates. The scheme introduces subgrids into the domain with smaller azimuthal grid spacings. This work investigates interpolation methods used for estimating unknown but required field values at the interface between grids with different azimuthal grid spacings. It is found that cubic, cubic spline and trigonometric interpolation cause less than 1% error in estimating the frequencies of the propagating modes of a microstructured optical fiber. Multiple subgrids have the potential for significant domain size reduction and minimum time step enlargement.
AB - A grid resolution compensation scheme based on subgridding is proposed and evaluated for improving the performance of the finite-difference time-domain method implemented in cylindrical coordinates. The scheme introduces subgrids into the domain with smaller azimuthal grid spacings. This work investigates interpolation methods used for estimating unknown but required field values at the interface between grids with different azimuthal grid spacings. It is found that cubic, cubic spline and trigonometric interpolation cause less than 1% error in estimating the frequencies of the propagating modes of a microstructured optical fiber. Multiple subgrids have the potential for significant domain size reduction and minimum time step enlargement.
UR - http://www.scopus.com/inward/record.url?scp=84858130492&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84858130492
SN - 9781934142189
T3 - Progress in Electromagnetics Research Symposium
SP - 1053
EP - 1057
BT - PIERS 2011 Suzhou - Progress in Electromagnetics Research Symposium, Proceedings
T2 - Progress in Electromagnetics Research Symposium, PIERS 2011 Suzhou
Y2 - 12 September 2011 through 16 September 2011
ER -