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Silica bottle resonator sensor for refractive index and temperature measurements

Galina Nemova and Raman Kashyap

Article (2016)

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Cite this document: Nemova, G. & Kashyap, R. (2016). Silica bottle resonator sensor for refractive index and temperature measurements. Sensors, 16(1), p. 1-9. doi:10.3390/s16010087
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Abstract

We propose and theoretically demonstrate a bottle resonator sensor with a nanoscale altitude and with alength several of hundreds of microns made on the top of the fiber with a radius of tens microns for refractive index and temperature sensor applications. The whispering gallery modes (WGMs) in the resonators can be excited with a taper fiber placed on the top of the resonator. These sensors can be considered as an alternative to fiber Bragg grating (FBG) sensors.The sensitivity of TM-polarized modes is higher than the sensitivity of the TE-polarized modes, but these values are comparable and both polarizations are suitable for sensor applications. The sensitivity similar to 150 (nm/RIU) can be reached with abottle resonator on the fiber with the radius 10 m. It can be improved with theuse of a fiber with a smaller radius. The temperature sensitivity is found to be similar to 10 pm/K. The temperature sensitivity can decrease similar to 10% for a fiber with a radius r(co) = 10 m instead of a fiber with a radius r(co) = 100 m. These sensors have sensitivities comparable to FBG sensors. A bottle resonator sensor with a nanoscale altitude made on the top of the fiber can be easily integrated in any fiber scheme.

Uncontrolled Keywords

bottle resonator; refractive index sensor; temperature sensor

Open Access document in PolyPublie
Subjects: 2500 Génie électrique et électronique > 2500 Génie électrique et électronique
3100 Physique > 3100 Physique
3100 Physique > 3111 Laser
3100 Physique > 3112 Photonique
Department: Département de génie électrique
Département de génie physique
Research Center: Non applicable
Funders: CRSNG/NSERC, Chaires de recherche du Canada
Date Deposited: 06 Dec 2018 13:09
Last Modified: 07 Dec 2018 01:20
PolyPublie URL: https://publications.polymtl.ca/3524/
Document issued by the official publisher
Journal Title: Sensors (vol. 16, no. 1)
Publisher: MDPI
Official URL: https://doi.org/10.3390/s16010087

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