Share Email Print

Proceedings Paper

Fiberoptic Temperature Sensing For Biomedical Applications
Author(s): D. A. Christensen
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Fiberoptic temperature sensors have found valuable application in several areas of research and treatment in biology and medicine. These include tissue monitoring during electromagnetic heating for cancer therapy, catheter-tip sensors as part of multi-purpose fiberoptic probes, patient monitoring during magnetic resonance imaging (MRI), and microwave biohazards studies. The advantage of fiberoptic probes compared to more conventional temperature sensors such as thermistors or thermocouples lies in the nonconductive property of the glass or plastic fibers used. This avoids shock hazard to the patient, and perturbation of the readings in electromagnetic environments. Fiberoptic temperature sensors may be classified into one of three general categories: 1) intensity, 2) wavelength, and 3) time-domain. Types of optical sensors which have been successfully employed with fibers include fluorescent materials, semiconductors, birefringent crystals, and Fabry-Perot interferometers. An example of a wavelength-based sensor is described herein; it is a new technique based upon wavelength shifts in a GaAs sensor using broadband illumination and a fast-scanning spectrometer, and appears useful over the biological temperature range of 25-50°C.

Paper Details

Date Published: 21 June 1988
PDF: 6 pages
Proc. SPIE 0906, Optical Fibers in Medicine III, (21 June 1988); doi: 10.1117/12.945263
Show Author Affiliations
D. A. Christensen, University of Utah (United States)

Published in SPIE Proceedings Vol. 0906:
Optical Fibers in Medicine III
Abraham Katzir, Editor(s)

© SPIE. Terms of Use
Back to Top