title: Self-referenced point temperature sensor based on a fluorescence intensity ratio in Yb(3+)-doped silica fiber.
abstract: An optical fiber temperature sensor, based on the fluorescence intensity ratio from the (2)F (5/2)(a) and (2)F(5/2)(b) Stark sublevels in ytterbium-doped silica fiber, has been investigated. Results of a sensor prototype demonstrate an accuracy near 1 degrees C in a 600 degrees C temperature range. Changes in the fluorescence intensity ratio because of variation in pump power, pump wavelength, and induced fiber bending loss are demonstrated to be small, supporting development of a practical sensor based on the technique described.
authors.forename: E
authors.initials: E
authors.lastname: Maurice
authors.forename: S A
authors.initials: SA
authors.lastname: Wade
authors.forename: S F
authors.initials: SF
authors.lastname: Collins
authors.forename: G
authors.initials: G
authors.lastname: Monnom
authors.forename: G W
authors.initials: GW
authors.lastname: Baxter