Year: 2012
Type: article
Abstract: We fabricated polygonal silica toroidal microcavities to achieve stable mechanical coupling with an evanescent coupler such as a tapered fiber. The octagonal cavity was fabricated by using a combination of isotropic etching, anisotropic etching, and laser reflow. It offers both high and low coupling efficiencies with the cavity mode even when the coupler is in contact with the cavity, which makes the device more practically because of easy alignment. A numerical simulation showed that an octagonal silica toroidal microcavity had an optical quality factor of 8.8 × 106.
Source: Applied Physics Letters
DOI: 10.1063/1.4752746
Authors: Takumi Kato, Wataru Yoshiki, Ryo Suzuki, Takasumi Tanabe
Institution: Keio University
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2019539929