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

Xinyong Dong | Zendy; HwaYaw Tam | Zendy; Perry Ping Shum | Zendy

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

Author(s) -

Xinyong Dong,

HwaYaw Tam,

Perry Ping Shum

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2722058

Subject(s) - photonic crystal fiber , materials science , interferometry , optics , fiber optic sensor , optical fiber , polarization (electrochemistry) , polarization maintaining optical fiber , optoelectronics , wavelength , physics , chemistry

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.Department of Electrical EngineeringAuthor name used in this publication: H. Y. TamAuthor name used in this publication: P. Shu

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