4.6 Article

Microstructured-core photonic-crystal fiber for ultra-sensitive refractive index sensing

Journal

OPTICS EXPRESS
Volume 19, Issue 5, Pages 4091-4100

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.19.004091

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Funding

  1. National Natural Science Foundation of China (NNSFC) [10904051]
  2. National Basic Research Program of China [2010CB327801]
  3. China Postdoctoral Science Foundation [20080441070, 200902505]

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We propose a novel photonic crystal fiber refractive index sensor which is based on the selectively resonant coupling between a conventional solid core and a microstructured core. The introduced microstructured core is realized by filling the air-holes in the core with low index analyte. We show that a detection limit (DL) of 2.02 x 10(-6) refractive index unit (RIU) and a sensitivity of 8500 nm/RIU can be achieved for analyte with refractive index of 1.33. (C) 2011 Optical Society of America

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