Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler
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 –...
Saved in:
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/89022 http://hdl.handle.net/10220/47003 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| id |
sg-ntu-dr.10356-89022 |
|---|---|
| record_format |
dspace |
| spelling |
sg-ntu-dr.10356-890222020-03-07T13:24:46Z Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler Zhou, Y. Gu, B. Yu, X. Luan, F. Kudryashov, Alexis V. Paxton, Alan H. Ilchenko, Vladimir S. Aschke, Lutz Washio, Kunihiko School of Electrical and Electronic Engineering Proceedings of SPIE - Laser Resonators, Microresonators, and Beam Control XVII Power Coupling Microresonators DRNTU::Engineering::Electrical and electronic engineering 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. Published version 2018-12-17T06:50:00Z 2019-12-06T17:16:07Z 2018-12-17T06:50:00Z 2019-12-06T17:16:07Z 2015 Conference Paper 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 https://hdl.handle.net/10356/89022 http://hdl.handle.net/10220/47003 10.1117/12.2079102 en © 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. 6 p. application/pdf |
| institution |
Nanyang Technological University |
| building |
NTU Library |
| country |
Singapore |
| collection |
DR-NTU |
| language |
English |
| topic |
Power Coupling Microresonators DRNTU::Engineering::Electrical and electronic engineering |
| spellingShingle |
Power Coupling Microresonators DRNTU::Engineering::Electrical and electronic engineering Zhou, Y. Gu, B. Yu, X. Luan, F. Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| description |
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. |
| author2 |
Kudryashov, Alexis V. |
| author_facet |
Kudryashov, Alexis V. Zhou, Y. Gu, B. Yu, X. Luan, F. |
| format |
Conference or Workshop Item |
| author |
Zhou, Y. Gu, B. Yu, X. Luan, F. |
| author_sort |
Zhou, Y. |
| title |
Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| title_short |
Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| title_full |
Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| title_fullStr |
Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| title_full_unstemmed |
Optimal coupling to high-Q whispering gallery modes with a sub-wavelength metallic grating coupler |
| title_sort |
optimal coupling to high-q whispering gallery modes with a sub-wavelength metallic grating coupler |
| publishDate |
2018 |
| url |
https://hdl.handle.net/10356/89022 http://hdl.handle.net/10220/47003 |
| _version_ |
1681045607301513216 |