A comprehensive experimental study of whispering gallery modes in a cylindrical microresonator excited by a tilted fiber taper

Kavungal, Vishnu, Farrell, Gerald, Wu, Qiang, Mallik, Arun Kumar and Semenova, Yuliya (2018) A comprehensive experimental study of whispering gallery modes in a cylindrical microresonator excited by a tilted fiber taper. Microwave and Optical Technology Letters, 60 (6). pp. 1495-1504. ISSN 0895-2477

[img]
Preview
Text
Paper_1-MOTL.pdf - Accepted Version

Download (1MB) | Preview
Official URL: https://doi.org/10.1002/mop.31186

Abstract

Whispering gallery modes (WGMs) excitation in a cylindrical microresonator formed by a section of silica optical fiber has been studied. Evanescent light coupling into the microresonator is realized using a tapered optical fiber, fabricated by a microheater brushing technique. Several types of silica fibers with different diameters are studied as microresonators, and the influence of the resonator's diameter on the excitation of WGMs is investigated. The excitation of WGMs in a cylindrical fiber resonator were studied with changes to the tilt angle between the microcylinder and the fiber taper in the range of angles from a perpendicular position (0°) to large tilt angles (24°). The evolution of the fiber taper transmission spectrum with the change of the tilt angle results in changes in the intensity, broadening of and a blue shift in the WGM resonance spectra. Overall losses in the taper transmission spectrum decrease with the increase of the taper tilt angle from its perpendicular position, followed by a complete disappearance of the WGM resonances at large tilt angles greater than 20°.

Item Type: Article
Uncontrolled Keywords: fiber optic sensors, microcavities, optical microresonators, tapered fiber, whispering gallery modes
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 18 May 2018 11:34
Last Modified: 24 Apr 2019 03:30
URI: http://nrl.northumbria.ac.uk/id/eprint/34271

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence