Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fiber based Sagnac interferometer

Xinyong Dong; Hwa Yaw Tam; P. Shum

doi:10.1063/1.2722058

Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fiber based Sagnac interferometer

Xinyong Dong, Hwa Yaw Tam, P. Shum

Research output: Journal article publication › Journal article › Academic research › peer-review

427 Citations (Scopus)

Abstract

A fiber-optic strain sensor is demonstrated by using a short length of polarization-maintaining photonic crystal fiber (PM-PCF) as the sensing element inserted in a Sagnac loop interferometer. Spectrum shift in response of strain with a sensitivity of 0.23 pm//με is achieved, and the measurement range, by stretching the PM-PCF only, is up to 32 mε. Due to the ultralow thermal sensitivity of the PM-PCF, the proposed strain sensor is inherently insensitive to temperature, eliminating the requirement for temperature compensation.

Original language	English
Article number	151113
Journal	Applied Physics Letters
Volume	90
Issue number	15
DOIs	https://doi.org/10.1063/1.2722058
Publication status	Published - 24 Apr 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2722058

http://hdl.handle.net/10397/4345

Cite this

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abstract = "A fiber-optic strain sensor is demonstrated by using a short length of polarization-maintaining photonic crystal fiber (PM-PCF) as the sensing element inserted in a Sagnac loop interferometer. Spectrum shift in response of strain with a sensitivity of 0.23 pm//με is achieved, and the measurement range, by stretching the PM-PCF only, is up to 32 mε. Due to the ultralow thermal sensitivity of the PM-PCF, the proposed strain sensor is inherently insensitive to temperature, eliminating the requirement for temperature compensation.",

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AB - A fiber-optic strain sensor is demonstrated by using a short length of polarization-maintaining photonic crystal fiber (PM-PCF) as the sensing element inserted in a Sagnac loop interferometer. Spectrum shift in response of strain with a sensitivity of 0.23 pm//με is achieved, and the measurement range, by stretching the PM-PCF only, is up to 32 mε. Due to the ultralow thermal sensitivity of the PM-PCF, the proposed strain sensor is inherently insensitive to temperature, eliminating the requirement for temperature compensation.

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Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fiber based Sagnac interferometer

Abstract

ASJC Scopus subject areas

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