Photonic nano-structures for water quality monitoring

Mikhail Vasiliev; Kamal Alameh

doi:10.1117/12.786319

16 May 2008 Photonic nano-structures for water quality monitoring

Mikhail Vasiliev, Kamal Alameh

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70045E (2008) https://doi.org/10.1117/12.786319
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

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.

Citation Download Citation

Mikhail Vasiliev and Kamal Alameh "Photonic nano-structures for water quality monitoring", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70045E (16 May 2008); https://doi.org/10.1117/12.786319

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