title: Sapphire-fiber-based distributed high-temperature sensing system.
abstract: We present, for the first time to our knowledge, a sapphire-fiber-based distributed high-temperature sensing system based on a Raman distributed sensing technique. High peak power laser pulses at 532 nm were coupled into the sapphire fiber to generate the Raman signal. The returned Raman Stokes and anti-Stokes signals were measured in the time domain to determine the temperature distribution along the fiber. The sensor was demonstrated from room temperature up to 1200°C in which the average standard deviation is about 3.7°C and a spatial resolution of about 14 cm was achieved.
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Zhihao
authors.initials: Z
authors.lastname: Yu
authors.forename: Cary
authors.initials: C
authors.lastname: Hill
authors.forename: Yujie
authors.initials: Y
authors.lastname: Cheng
authors.forename: Daniel
authors.initials: D
authors.lastname: Homa
authors.forename: Gary
authors.initials: G
authors.lastname: Pickrell
authors.forename: Anbo
authors.initials: A
authors.lastname: Wang