Silicon hybrid plasmonic submicron-donut resonator with pure dielectric access waveguides
2011 (English)In: Optics Express, ISSN 1094-4087, Vol. 19, no 24, 23671-23682 p.Article in journal (Refereed) Published
Characteristic analyses are given for a bent silicon hybrid plasmonic waveguide, which has the ability of submicron bending (e.g., R = 500nm) even when operating at the infrared wavelength range (1.2 mu m similar to 2 mu m). A silicon hybrid plasmonic submicron-donut resonator is then presented by utilizing the sharp-bending ability of the hybrid plasmonic waveguide. In order to enable long-distance optical interconnects, a pure dielectric access waveguide is introduced for the present hybrid plasmonic submicron-donut resonator by utilizing the evanescent coupling between this pure dielectric waveguide and the submicron hybrid plasmonic resonator. Since the hybrid plasmonic waveguide has a relatively low intrinsic loss, the theoretical intrinsic Q-value is up to 2000 even when the bending radius is reduced to 800nm. By using a three-dimensional finite-difference time-domain (FDTD) method, the spectral response of hybrid plasmonic submicron-donut resonators with a bending radius of 800nm is simulated. The critical coupling of the resonance at around 1423nm is achieved by choosing a 80nm-wide gap between the access waveguide and the resonator. The corresponding loaded Q-value of the submicron-donut resonator is about 220.
Place, publisher, year, edition, pages
2011. Vol. 19, no 24, 23671-23682 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-63272ISI: 000298322000006ScopusID: 2-s2.0-82055170361OAI: oai:DiVA.org:kth-63272DiVA: diva2:483390
QC 201201252012-01-252012-01-232013-11-19Bibliographically approved