Whispering gallery mode resonance excitations on a partially gold coated bottle microresonator

The study on the excitations of whispering gallery mode (WGM) resonances optical bottle microresonator (BMR) partially coated with a thin gold Au metal film is presented. The BMR was fabricated through “soften-and-compress” technique on a small section of standard optical fibre. Depositing Au partic...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2021-10, Vol.2075 (1), p.12019
Main Authors: Mohd Nasir, Mohd Narizee, Murugan, G S, Zervas, M N
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The study on the excitations of whispering gallery mode (WGM) resonances optical bottle microresonator (BMR) partially coated with a thin gold Au metal film is presented. The BMR was fabricated through “soften-and-compress” technique on a small section of standard optical fibre. Depositing Au particles on the spheroidal curvature of the BMR surface yields a thin metal-film of a meniscus profile with 200 nm maximum gold thickness and tapered edges. A polarization resolved experimental setup was used to excite TE- and TM-mode resonances. Coupling strengths of the excited WGMs would vary with different coupling arrangements relative to the position of the meniscus Au film. Calculated Q -factor values of composite TE and TM mode resonances were determined to be in the range 1800 and 2700, respectively.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2075/1/012019