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

Vishnu Kavungal; Gerald Farrell; Qiang Wu; Arun Kumar Mallik; Yuliya Semenova

doi:10.1364/OE.26.008431

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

Vishnu Kavungal, Gerald Farrell, Qiang Wu, Arun Kumar Mallik, Yuliya Semenova

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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.

Original language	English
Pages (from-to)	8431-8442
Journal	Optics Express
Volume	26
Issue number	7
Early online date	23 Mar 2018
DOIs	https://doi.org/10.1364/OE.26.008431
Publication status	Published - 2 Apr 2018

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

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.",

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AU - Kavungal, Vishnu

AU - Farrell, Gerald

AU - Wu, Qiang

AU - Mallik, Arun Kumar

AU - Semenova, Yuliya

PY - 2018/4/2

Y1 - 2018/4/2

N2 - 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.

AB - 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.

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EP - 8442

JO - Optics Express

JF - Optics Express

IS - 7

ER -

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

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