A temperature sensor based on topological insulators and tapered fiber

A temperature sensor based on topological insulators and tapered fiber is proposed and experimentally investigated. The tapered fiber and topological insulators solution are encapsulated in a capillary tube using UV glue. Within a temperature range of 47–92 centigrade, one resonance dip of tapered fiber exhibits a blue shift of 10nm, which is more than 20 times of ordinary fiber Bragg grating's temperature sensitivity.