Thermo-optic tuning of a packaged whispering gallery mode resonator filled with nematic liquid crystal

Kavungal, Vishnu, Farrell, Gerald, Wu, Qiang, Mallik, Arun Kumar and Semenova, Yuliya (2018) Thermo-optic tuning of a packaged whispering gallery mode resonator filled with nematic liquid crystal. Optics Express, 26 (7). pp. 8431-8442. ISSN 1094-4087

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Official URL: http://dx.doi.org/10.1364/OE.26.008431

Abstract

Thermo-optic tuning of whispering gallery modes (WGMs) in a nematic liquid crystal-filled thin-walled capillary tube resonator is reported. WGMs were excited by the evanescent field from a tapered optical fiber. Tapered optical fiber fabrication and reduction of wall thickness of the capillary tube was carried out by a ceramic micro-heater brushing technique. A simple and robust packaging technique is demonstrated to ensure stable and repeatable operation of the device. Tunability of WGMs with temperature was demonstrated with a sensitivity of 267.5 ± 2.5 pm/°C. The demonstrated thermo-optic method for WGMs tuning is potentially useful for many tunable photonic devices and sensors.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 18 May 2018 10:29
Last Modified: 20 May 2018 18:45
URI: http://nrl.northumbria.ac.uk/id/eprint/34268

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