  We encapsulated a high-quality (Q) factor optical whispering gallery mode
(WGM) microtoroid resonator together with its side coupled fiber taper inside a
low refractive index polymer, achieving a final Q higher than 10^7. Packaging
provides stable resonator-fiber taper coupling, long-term maintenance of
high-Q, a protective layer against contaminants, and portability to microtoroid
resonator based devices. We tested the robustness of the packaged device under
various conditions and demonstrated its capability for thermal sensing.
