Spectral characteristics of tapered LPG device as a sensing element for refractive index and temperature

Allsop, Thomas D.P., Floreani, Filip, Jedrzejewski, K.P., Marques, P.V.S., Romero, R., Webb, David J. and Bennion, Ian (2006). Spectral characteristics of tapered LPG device as a sensing element for refractive index and temperature. Journal of lightwave technology, 24 (2), pp. 870-878.

Abstract

The fabrication and characterization of long-period gratings (LPGs) in fiber tapers is presented alongside supporting theory. The devices possess a high sensitivity to the index of aqueous solutions due to an observed spectral bifurcation effect, yielding a limiting index resolution of ±8.5×10-5 for solutions with an index in the range 1.330-1.335.

Uncontrolled Keywords: bifurcation, diffraction gratings, fibre optic sensors, optical fibre fabrication, optical fibre testing, refractive index measurement, temperature measurement, temperature sensors, fiber tapers, long-period gratings, spectral bifurcation effect, tapered LPG, long-period fiber gratings, optical fiber devices, optical fiber tapers
Published Date: 2006-02

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