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Sensing characteristics of the rocking filters in microstructured fibers optimized for hydrostatic pressure measurements

Publication date 2012
B-Phot Authors Thomas Geernaert, Francis Berghmans, Hugo Thienpont
Citation
A. Anuszkiewicz et al., “Sensing characteristics of the rocking filters in microstructured fibers optimized for hydrostatic pressure measurements,” Optics Express, vol. 20, no. 21, pp. 23320–23330, 2012.
Abstract We report on the sensing characteristics of rocking filters fabricated in two microstructured fibers with enhanced polarimetric sensitivity to hydrostatic pressure. The filter fabricated in the first fiber shows a very high sensitivity to pressure ranging from 16.2 to 43.4 nm/MPa, depending on the resonance order and features an extremely low cross-sensitivity between pressure and temperature 28 divided by 89 x 10(3) K/MPa. The filter fabricated in the second fiber has an extreme sensitivity to pressure ranging from -72.6 to -177 nm/MPa, but a less favorable cross-sensitivity between pressure and temperature of 1.05 divided by 3.50 x 10(3) K/MPa. These characteristics allow using the rocking filters for pressure measurements with mbar resolution.
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