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- W2004772783 abstract "Abstract An intensity curvature sensor using a Photonic Crystal Fiber (PCF) with three coupled cores is proposed. The three cores were aligned and there was an air hole between each two consecutive cores. The fiber had a low air filling fraction, which means that the cores remain coupled in the wavelength region studied. Due to this coupling, interference is obtained in the fiber output even if just a single core is illuminated. A configuration using reflection interrogation, which used a section fiber with 0.13 m as the sensing head, was characterized for curvature sensing. When the fiber is bended along the plane of the cores, one of the lateral cores will be stretched and the other compressed. This changes the coupling coefficient between the three cores, changing the output optical power intensity. The sensitivity of the sensing head was strongly dependent on the direction of bending, having its maximum when the bending direction was along the plane of the cores. A maximum curvature sensitivity of 2.0 dB/m −1 was demonstrated between 0 m and 2.8 m." @default.
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- W2004772783 date "2012-11-01" @default.
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- W2004772783 title "Intensity curvature sensor based on photonic crystal fiber with three coupled cores" @default.
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- W2004772783 doi "https://doi.org/10.1016/j.optcom.2012.07.074" @default.
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