期刊
BIOMEDICAL OPTICS EXPRESS
卷 10, 期 3, 页码 1282-1296出版社
OPTICAL SOC AMER
DOI: 10.1364/BOE.10.001282
关键词
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资金
- ORAU program at Nazarbayev University (grant LIFESTART 2017-2019)
- ORAU program at Nazarbayev University (grant FOSTHER2018-2020)
- ANR project Nice-DREAM [ANR-14-CE07-0016-03]
- Spanish Ministry of Economy and Competitiveness [DIMENSION TEC2017 88029-R]
- SIRASI project - Sistema Robotico a supporto della Riabilitazione di Arto Superiore e Inferiore [Bando INTESE - CUP: F86D15000050002]
We propose a setup for multiplexed distributed optical fiber sensors capable of resolving temperature distribution in thermo-therapies, with a spatial resolution of 2.5 mm over multiple fibers interrogated simultaneously. The setup is based on optical backscatter reflectometry (OBR) applied to optical fibers having backscattered power significantly larger than standard fibers (36.5 dB), obtained through MgO doping. The setup is based on a scattering-level multiplexing, which allows interrogating all the sensing fibers simultaneously, thanks to the fact that the backscattered power can be unambiguously associated to each fiber. The setup has been validated for the planar measurement of temperature profiles in ex vivo radiofrequency ablation, obtaining the measurement of temperature over a surface of 96 total points (4 fibers, 8 sensing points per cu). The spatial resolution obtained for the planar measurement allows extending distributed sensing to surface, or even three-dimensional, geometries performing temperature sensing in the tissue with millimeter resolution in multiple dimensions. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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