Ultrasensitive Thermal Sensors Based on Whispering Gallery Modes in a Polymer Core Optical Ring Resonator
This study proposes a thermal sensor based on whispering gallery modes (WGMs) in a polymer core optical ring resonator (PCORR). The thermal sensitivity and detection limit (i.e., the temperature resolution) for WGMs of various orders and polarizations are theoretically studied as a function of the ring wall thickness. The results show that the temperature detection limits can be as low as 4 × 10ˉ⁵ and 6 × 10ˉ⁶ K for laser linewidths of 2 and 0.3 MHz, respectively. The ultrahigh temperature resolution makes the PCORR a very promising platform for temperature measurement. The analysis also shows that the WGM of a lower order has better thermal sensing performance and a thinner optimal thickness of the ring resonator. © 2011 Optical Society of America.
N. Lin et al., "Ultrasensitive Thermal Sensors Based on Whispering Gallery Modes in a Polymer Core Optical Ring Resonator," Applied Optics, Optical Society of America, Jan 2011.
The definitive version is available at http://dx.doi.org/10.1364/AO.50.006254
Mechanical and Aerospace Engineering
Electrical and Computer Engineering
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© 2011 Optical Society of America, All rights reserved.