title: Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer.
abstract: A novel intrinsic fiber optic pressure sensor realized with a polarization-maintaining photonic crystal fiber (PM-PCF) based Sagnac interferometer is proposed and demonstrated experimentally. A large wavelength-pressure coefficient of 3.42 nm/MPa was measured using a 58.4 cm long PM-PCF as the sensing element. Owing to the inherently low bending loss and thermal dependence of the PM-PCF, the proposed pressure sensor is very compact and exhibits low temperature sensitivity.
authors.affiliation: Photonics Research Centre, Department of Electrical Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. freddy.fu@polyu.edu.hk
authors.forename: H Y
authors.initials: HY
authors.lastname: Fu
authors.forename: H Y
authors.initials: HY
authors.lastname: Tam
authors.forename: Li-Yang
authors.initials: LY
authors.lastname: Shao
authors.forename: Xinyong
authors.initials: X
authors.lastname: Dong
authors.forename: P K A
authors.initials: PK
authors.lastname: Wai
authors.forename: C
authors.initials: C
authors.lastname: Lu
authors.forename: Sunil K
authors.initials: SK
authors.lastname: Khijwania