Linearly chirped fiber-optic Bragg grating as distributed temperature sensor for laser ablation

Sanzhar Korganbayev, Nurlan Zhakin, Daniele Tosi, Riccardo Gassino, Alberto Vallan, Guido Perrone, Flavia Napoleoni, Emiliano Schena, Paola Saccomandi, M. Caponero

2016

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DOI 10.1109/icsens.2016.7808610

Data confidence 85 high

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Abstract

We report a novel technique for estimating spatially distributed temperature profile, with a linearly chirped fiber Bragg grating (LCFBG) fiber-optic sensor, and its application in laser ablation of tissue. Our algorithm determines the temperature profile from LCFBG optical spectrum with sub-0.1mm resolution; a spectral flattening filter compensates for LCFBG spectral ripples, allowing operation with commercial gratings. A preliminary experimental analysis on LCFBG monitoring laser ablation of porcine liver has been carried out.