title: Performance of a fiber-optic temperature sensor from -200 to 1050 degrees C.
abstract: A reflectively monitored Fabry-Perot temperature sensor is characterized over a 1250 degrees C temperature range. Dielectric mirrors for the interferometer are incorporated into a continuous length of single-mode fiber by a fusionsplicing technique. The change in optical phase per unit temperature is nearly constant above room temperature but decreases at lower temperatures. Phase-shift data for the germania-doped silica fiber used in these experiments are compared with calculations based on previously reported information on the temperature dependence of refractive index and length in bulk fused silica.
authors.forename: C E
authors.initials: CE
authors.lastname: Lee
authors.forename: R A
authors.initials: RA
authors.lastname: Atkins
authors.forename: H F
authors.initials: HF
authors.lastname: Taylor