Document Type
Conference Proceeding
Publisher
Society of Photo-Optical Instrumentation Engineers
Faculty
Computing, Health and Science
School
Electron Science Research Institute
RAS ID
5517
Abstract
We propose a new type of sensors suitable for water quality testing and for monitoring water contamination levels in domestic, industrial and environmental applications. The proposed sensing scheme uses Fourier transform cavity-enhanced absorption spectroscopy and novel compact sensing elements based on nanostructured photonic crystal-type optical coatings enabling the sensitive Fourier-domain processing methodology and maximising the absorption path length within the measurement system. The measurement scheme is shown to be suitable for the determination of small changes in the water absorption coefficients at a discrete set of wavelengths in the visible spectral region in response to small concentrations of pollutants with high sensitivity. The proposed sensors are expected to provide real-time information on the water contamination levels, as well as potentially the types of substances dissolved.
Comments
This article was originally published as: Vasiliev, M. , & Alameh, K. (2008). Photonic Nano-Structures For Water Quality Monitoring. Proceedings of 19th International Conference on Optical Fibre Sensors. (pp. 70045E-1 to 70045E-4). Perth, Western Australia. SPIE. Original article available here