Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer

H. Y. Fu, Hwa Yaw Tam, Li Yang Shao, Xinyong Dong, Ping Kong Alexander Wai, Chao Lu, Sunil K. Khijwania

Research output: Journal article publicationJournal articleAcademic researchpeer-review

265 Citations (Scopus)


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 3.42nm/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.
Original languageEnglish
Pages (from-to)2835-2839
Number of pages5
JournalApplied Optics
Issue number15
Publication statusPublished - 20 May 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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