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Engineering a portable quasi-distributed Fibre-Bragg-Grating temperature sensing system for clinical hyperthermia

Smith, E.D.J., Patterson, B.A., Webster, R.J., Krug, P.A., Jones, S.K. and Sampson, David (2002) Engineering a portable quasi-distributed Fibre-Bragg-Grating temperature sensing system for clinical hyperthermia

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Abstract

We have developed a quasi-distributed temperature sensor consisting of an array of fibre Bragg gratings (FBGs), illuminated by a superluminescent diode (SLD) and interrogated by a fibre Fabry-Perot (FFP) tunable filter. This sensor has been previously tested both on agar-gel tissue phantoms and in vivo on tumours, in rabbit livers that were treated by hyperthermia. The FFP filter is controlled by a piezoelectric transducer operating in an open-loop configuration, and this introduces repeatability and long-term stability issues. Here we report the further development of this system in order to account for the FFP filter issues, and we reduce the noise levels to less than 0.035°C rms and the long-term temperature drift below 0.1°C/hr.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions : Faculty of Engineering and Physical Sciences
Faculty of Health and Medical Sciences
Authors :
NameEmailORCID
Smith, E.D.J.
Patterson, B.A.
Webster, R.J.
Krug, P.A.
Jones, S.K.
Sampson, Davidd.sampson@surrey.ac.uk
Date : 2002
DOI : 10.1109/OFS.2002.1000553
Uncontrolled Keywords : Bragg gratings, Fabry-Perot interferometers, Fiber Bragg gratings, Fiber optic sensors, Fibers, Optical fibers, Long term stability, Open-loop configuration, Quasi-distributed, Superluminescent diode, Temperature drifts, Temperature sensing, Tissue phantom, Tunable filters, Temperature sensors
Depositing User : Maria Rodriguez-Marquez
Date Deposited : 12 Jun 2018 10:12
Last Modified : 19 Sep 2018 11:32
URI: http://epubs.surrey.ac.uk/id/eprint/846935

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