DocumentCode :
31755
Title :
Highly Sensitive Temperature Measurements With Liquid-Core Microbubble Resonators
Author :
Ward, Jonathan M. ; Yong Yang ; Chormaic, Site Nic
Author_Institution :
Light-Matter Interactions Unit, Okinawa Inst. of Sci. & Technol. Grad. Univ., Okinawa, Japan
Volume :
25
Issue :
23
fYear :
2013
fDate :
Dec.1, 2013
Firstpage :
2350
Lastpage :
2353
Abstract :
The thermal shifting of whispering gallery modes (WGMs) in a microbubble resonator is investigated. The thermal shift rate is determined for different modes when the core of the microbubble is filled with air, water and ethanol. Sensitivities as high as 100 GHz/K (0.2 nm/K at wavelength of 775 nm) are observed when the microbubble core is filled with ethanol. This is the largest thermal shift rate reported for a WGM resonator. We also show that thermal behavior of the WGMs in a thin-shelled, air-filled microbubble is different from a solid microsphere. The measured shifts are compared against finite element model simulations. Q-factors for the higher order modes are typically 105, equivalent to a measurement resolution of 8.5 mK.
Keywords :
Q-factor; bubbles; finite element analysis; microfluidics; temperature measurement; whispering gallery modes; Q-factor; ethanol; finite element model simulations; highly sensitive temperature measurements; liquid-core microbubble resonators; microbubble core; solid microsphere; thermal shift rate; whispering gallery modes; Glass; Optical fiber sensors; Optical fibers; Optical resonators; Solids; Temperature measurement; Temperature sensors; Microbubble resonator; microfluidics; temperature measurement; whispering gallery modes;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2013.2283732
Filename :
6615952
Link To Document :
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