Experimental Demonstration of Temperature Sensing with Packaged Glass Bottle Microresonators.

Whispering gallery mode (WGM) glass bottle microresonators are potential highly sensitive structures for a variety of physical and bio-chemical sensing applications. In this paper, we experimentally demonstrate the practical use of glass bottle resonators as temperature sensors. The basic parameters, such as WGM resonance wavelengths, free spectral ranges, and factors, have been investigated by coupling light from a tapered fiber to the bottle structure.