A Fibre Optic Sensor For The Detection Of
Hydrocarbon Fuel Spills
Author(s)
A. MacLean, C. Moran, W. Johnstone, B Culshaw,
D. Marsh, V. Watson, G. Andrews
Abstract
We present a fibre-optic sensor for the detection and location of hydrocarbon
fuel spills to a precision of ± 2 m over a total length that may realistically
extend to 10 km. The sensor is non-electrical, requires only a low-power laser
source and is therefore intrinsically safe. It has been designed such that liquid-
swellable polymers transduce their swelling into a force on an optical fibre
when activated. Interrogation of the sensor using standard Optical Time
Domain Reflectometry (OTDR) techniques provides the possibility of detecting
and locating target hydrocarbon fuels and chemicals at multiple positions along
the sensor length. Sensor response time after exposure to the hydrocarbon fuel is
typ
Keywords
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