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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Languages: English
Types: Part of book or chapter of book
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arxiv: Physics::Optics
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.
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    • A. M.A.Davis, “Fiber bragg grating sensors for infrastructure sensing,” OFC 97, pp. 177-178, (Dallas), 1997.
    • J. Ctyroky, W. Ecke, K. Schroeder, and R. Slavik, “Separation of refractive index and temperature measurements using surface plasmon-coupled fiber grating,” OFS 16, pp. 322-325, 2003.
    • K. Usbeck, W. Ecke, V. Hagemann, R. Mueller, and R. Willsch, “Temperature referenced fibre bragg grating refractometer sensor for on-line quality control of petrol products,” OFS 13, pp. 163-166, 2000.
    • K.Zhou, X.Chen and I.Bennion, “High-sensitivity optical chemsensor based on etched d-fibre bragg gratings,” Electron. Lett. 40, pp.232-234, 2004.
    • S. A.Ezbri and V.A.Handerek, “High resolution instrumentation system for fiber-bragg grating aerospace sensors,” Optics Communication 150, pp. 43-48, 1998.
    • R.C.Weast, Handbook of Chemistry and Physics, CRC,Boca Raton,Fla., 1981.
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