Small-volume waveguide-section high Q microcavities in 2D photonic crystal slabs
2004 (English)In: Optics Express, ISSN 1094-4087, Vol. 12, no 17, 3988-3995 p.Article in journal (Refereed) Published
A series of microcavities in 2D hexagonal lattice photonic crystal slabs are studied in this paper. The microcavities are small sections of a photonic crystal waveguide. Finite difference time domain simulations show that these cavities preserve high Q modes with similar geometrical parameters and field profile. Effective modal volume is reduced gradually in this series of microcavity modes while maintaining high quality factor. Vertical Q value larger than 106 is obtained for one of these cavity modes with effective modal volume around 5.40 cubic half wavelengths [(lambda/2n(slab))(3)]. Another cavity mode provides even smaller modal volume around 2.30 cubic half wavelengths, with vertical Q value exceeding 10(5).
Place, publisher, year, edition, pages
2004. Vol. 12, no 17, 3988-3995 p.
Computer simulation, Crystal lattices, Finite difference method, Light reflection, Microstructure, Optical resonators, Optical waveguides, Time domain analysis, Finite difference time domain (FDTD) simulation, Microcavities, Microstructure devices, Photonic crystals (PC)
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-8017DOI: 10.1364/OPEX.12.003988ISI: 000223469000014ScopusID: 2-s2.0-4644371173OAI: oai:DiVA.org:kth-8017DiVA: diva2:13226
QC 20100922 QC 201109232008-02-222008-02-222011-09-23Bibliographically approved