Ahead of Print article · Journal article
Thermal profile detection through high-sensitivity fiber optic chirped Bragg grating on microstructured PMMA fiber
Nazarbayev University1
Sociedad Para el Fomento de la Innovacion Tecnologica S.L.2
University of Mons3
Department of Photonics Engineering, Technical University of Denmark4
Fiber Sensors & Supercontinuum, Department of Photonics Engineering, Technical University of Denmark5
Polytechnic University of Valencia6
University of Aveiro7
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2018 |
| Pages: | 4723-4729 |
| ISSN: | 15582213 and 07338724 |
| Types: | Ahead of Print article and Journal article |
| DOI: | 10.1109/JLT.2018.2864113 |
| ORCIDs: | Bang, Ole |
Chirped FBG (CFBG) Distributed temperature sensor (DTS) Fiber Bragg grating (FBG) Optical fiber sensors Polymer optical fiber sensors Thermal ablation
Bragg gratings CFBG temperature reconstruction Fiber gratings Gaussian-shaped temperature spatial profiles Gratings Optical sensors Temperature measurement Temperature sensors biomedical measurement biothermics distributed temperature sensor (DTS) fiber Bragg grating (FBG) fibre optic sensors grating length high-sensitivity fiber optic chirped Bragg grating holey fibres linearly chirped fiber Bragg grating mPOF fiber microstructured PMMA fiber microstructured polymer optical fiber minimally invasive biomedical treatments optical fiber sensors optical fibre fabrication optical polymers polymer optical fiber sensors radiofrequency heating research-grade radiofrequency ablation semidistributed temperature sensor size 10 mm spatially nonuniform temperature fields spectral reconstruction temperature profile temperature sensitivity temperature sensors thermal ablation thermal profile detection thermal treatments uniform phase mask
