publication . Part of book or chapter of book . 2004

Temperature-referenced high-sensitivity point-probe optical fiber chem-sensors based on cladding etched fiber Bragg gratings

Zhou, Kaiming; Chen, Xianfeng F.; Zhang, Lin; Bennion, Ian;
Open Access English
  • Published: 01 Sep 2004
  • Publisher: SPIE
Point-probe optical fiber chem-sensors have been implemented using cladding etched fiber Bragg gratings. The sensors possess refractive index sensing capability that can be utilized to measure chemical concentrations. The Bragg wavelength shift reaches 8 nm when the index of surrounding medium changes from 1.33 to 1.44, giving maximum sensitivity more than 10 times higher than that of previously reported devices. More importantly, the dual-grating configuration of the point-probe sensors offers a temperature reference function, permitting accurate measurement of refractive index encoded chemical concentrations.
arxiv: Physics::Optics
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Part of book or chapter of book . 2004

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