Open AccessTopology-optimized multiple-disk resonators obtained using level set expression incorporating surface effects
Author(s) -
Garuda Fujii,
Tsuyoshi Ueta,
Mamoru Mizuno,
Masayuki Nakamura
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.011312
Subject(s) - resonator , topology (electrical circuits) , optics , electric field , dielectric , topology optimization , intensity (physics) , wavelength , physics , optoelectronics , finite element method , mathematics , combinatorics , quantum mechanics , thermodynamics
Topology-optimized designs of multiple-disk resonators are presented using level-set expression that incorporates surface effects. Effects from total internal reflection at the surfaces of the dielectric disks are precisely simulated by modeling clearly defined dielectric boundaries during topology optimization. The electric field intensity in optimal resonators increases to more than four and a half times the initial intensity in a resonant state, whereas in some cases the Q factor increases by three and a half times that for the initial state. Wavelength-scale link structures between neighboring disks improve the performance of the multiple-disk resonators.