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Plastic Optical Fibre Sensors for Environmental Monitoring: Biofouling and Strain Applications
Y. M. Wong, P. J. Scully, R. J. Bartlett, K. S. C. Kuang and W. J. Cantwell
Strain: International Journal for Experimental Mechanics. 2003;Volume 39 Issue 3:115-119.
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Abstract
Two long-term environmental monitoring plastic optical fibre (POF) sensors are described, using light intensity modulation. An evanescent field biofouling sensor was developed and characterised with sensitivity ±0.007 refractive index units or 0.5% below n = 1.4 and ±0.002 refractive index units or 0.15% above n = 1.4. A tapered POF was developed and tested as a strain sensor, which demonstrated a significant proportion of excellent linearity and exhibited good agreement with measured strain values. The POF strain sensor appeared to be well-behaved in that it showed little data scatter and was able to monitor strains up to 1.4% without failure. These two applications clearly demonstrate the potential POF sensors have for cheap, on-line continuous environmental monitoring.
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- Related website http://www3.interscience.wiley.com/journal/118874667/abstract?CRETRY=1&SRETRY=0