TY - JOUR
T1 - Thermal profile detection through high-sensitivity fiber optic chirped Bragg grating on microstructured PMMA fiber
AU - Korganbayev, Sanzhar
AU - Rui, Min
AU - Jelbuldina, Madina
AU - Hu, Xuehao
AU - Caucheteur, Christophe
AU - Bang, Ole
AU - Ortega, Beatriz
AU - Marques, Carlos
AU - Tosi, Daniele
PY - 2018
Y1 - 2018
N2 - In this work, a linearly chirped fiber Bragg grating (CFBG) inscribed in a microstructured polymer optical fiber (mPOF) has been demonstrated for detecting temperature pro- files during thermal treatments. A CFBG of 10 mm length and 0.98 nm bandwidth has been inscribed in a mPOF fiber by means of a KrF laser and uniform phase mask. The CFBG has a high temperature sensitivity of -191.4 pm/°C). The CFBG has been used as a semi-distributed temperature sensor, capable of detecting the temperature profile along the grating length, for scenarios that account minimally invasive biomedical treatments. Two experiments have been designed to validate the CFBG tem- perature reconstruction, using a linear gradient, and a research- grade radiofrequency ablation (RFA) setup to apply Gaussian- shaped temperature spatial profiles. The result is that the higher sensitivity of the CFBG supports the detection of spatially non- uniform temperature fields by means of spectral reconstruction.
AB - In this work, a linearly chirped fiber Bragg grating (CFBG) inscribed in a microstructured polymer optical fiber (mPOF) has been demonstrated for detecting temperature pro- files during thermal treatments. A CFBG of 10 mm length and 0.98 nm bandwidth has been inscribed in a mPOF fiber by means of a KrF laser and uniform phase mask. The CFBG has a high temperature sensitivity of -191.4 pm/°C). The CFBG has been used as a semi-distributed temperature sensor, capable of detecting the temperature profile along the grating length, for scenarios that account minimally invasive biomedical treatments. Two experiments have been designed to validate the CFBG tem- perature reconstruction, using a linear gradient, and a research- grade radiofrequency ablation (RFA) setup to apply Gaussian- shaped temperature spatial profiles. The result is that the higher sensitivity of the CFBG supports the detection of spatially non- uniform temperature fields by means of spectral reconstruction.
KW - Optical fiber sensors
KW - Fiber Bragg grating (FBG)
KW - Chirped FBG (CFBG)
KW - Distributed temperature sensor (DTS)
KW - Polymer optical fiber sensors
KW - Thermal ablation
U2 - 10.1109/JLT.2018.2864113
DO - 10.1109/JLT.2018.2864113
M3 - Journal article
SN - 0733-8724
VL - 36
SP - 4723
EP - 4729
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 20
ER -