Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/89022
Title: Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler
Authors: Zhou, Y.
Gu, B.
Yu, X.
Luan, F.
Keywords: Power Coupling
Microresonators
DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2015
Source: Zhou, Y., Gu, B., Yu, X., & Luan, F. (2015). Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler. Proceedings of SPIE - Laser Resonators, Microresonators, and Beam Control XVII, 9343, 934315-. doi:10.1117/12.2079102
Abstract: Gold grating patterned on the end facet of an optical fiber is able to excite whispering gallery mode (WGM) in a silica microsphere. With a direct pathway of the metal reflection, the coupled WGM is able to superimpose and create an asymmetric Fano resonance. Since multiple resonances are present – the WGM, grating reflection, and a weak Fabry-Perot resonance along the diameter of the sphere – it is difficult to evaluate the power efficiency directly from the measured spectrum. Using temporal coupled-mode theory, a general model is constructed for the end-fire coupling from a grating to a WGM resonator.
URI: https://hdl.handle.net/10356/89022
http://hdl.handle.net/10220/47003
DOI: http://dx.doi.org/10.1117/12.2079102
Rights: © 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - Laser Resonators, Microresonators, and Beam Control XVII and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2079102]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.