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We propose and experimentally demonstrate an optical fiber sensor for a simultaneous measurement of strain and temperature with high sensing accuracy by combining a long-period fiber grating pair with a polarization-maintaining fiber loop mirror.
We will propose and experimentally demonstrate optical fiber sensor for simultaneous measurement of temperature and strain with long-period fiber grating inscribed in photonic crystal fiber combined with Sagnac loop mirror based on polarization-maintaining side-hole fiber.
A feedback polarization maintaining fiber loop mirror is newly proposed. Narrowband transmission peaks with large effective free spectral range are achieved by intrinsic vernier effect between the traveling orthogonally polarized lights along two primary axes in the polarization maintaining fiber. The properties facilitate its application in single frequency fiber lasers.
A fiber sensor configuration capable of simultaneous measurement of temperature and strain is newly presented and investigated. Two different types of high-birefringence fibers (HBFs) spliced together are inserted in a Sagnac loop mirror to act as the sensing head for temperature and strain discrimination. Unlike an individual HBF, the two wavelength dips used as detected parameters in the transmission...
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