title: Distributed high-temperature pressure sensing using air-hole microstructural fibers.
abstract: We present spatially resolved Rayleigh scattering measurements in different polarization-maintaining (PM) fibers for high-temperature pressure sensing. The pressure-induced birefringence in the fiber cores is interrogated using polarization-resolved frequency-swept interferometry. The pressure responses of a PM photonic crystal fiber and a twin-air-hole PM fiber are investigated for a pressure range of 0 to 13.8 MPa (0-2000 psi) at room temperature and at temperatures as high as 800 °C. The proposed sensing system provides, for the first time to our knowledge, a truly distributed pressure-sensing solution for high-temperature applications.
authors.affiliation: Department of Electrical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
authors.forename: Tong
authors.initials: T
authors.lastname: Chen
authors.forename: Qingqing
authors.initials: Q
authors.lastname: Wang
authors.forename: Rongzhang
authors.initials: R
authors.lastname: Chen
authors.forename: Botao
authors.initials: B
authors.lastname: Zhang
authors.forename: Charles
authors.initials: C
authors.lastname: Jewart
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Chen
authors.forename: Mokhtar
authors.initials: M
authors.lastname: Maklad
authors.forename: Phillip R
authors.initials: PR
authors.lastname: Swinehart