WaterSpy: A High Sensitivity, Portable Photonic Device for Pervasive Water Quality Analysis

• DOI: 10.3390/s19010033
• Publication Date: 2018-12-21T17:14:49Z
• Authors: Nikolaos Doulamis; Athanasios Voulod...; Anastasios Doulamis; Matthaios Bimpas; Aikaterini Angeli; Nikolaos Bakalos; Alessandro Giusti; Panayiotis Philimis; Antonio Varriale; Alessio Ausili; Sabato D’Auria; George Lampropoulos; Matthias Baer; Bernhard Schmauss; Stephan Freitag; Bernhard Lendl; Krzysztof Młynarczyk; Aleksandra Sosna-...; Artur Trajnerowicz; Jarosław Pawluczyk; Mateusz Żbik; Jacek Kułakowski; Panagiotis Georgi...; Stéphane Blaser; Nicola Bazzurro
• Keywords: Modulation (music)

In this paper, we present WaterSpy, a project developing an innovative, compact, cost-effective photonic device for pervasive water quality sensing, operating in the mid-IR spectral range. The approach combines use of advanced Quantum Cascade Lasers (QCLs) employing Vernier effect, used as light source, with novel, fibre-coupled, fast and sensitive Higher Operation Temperature (HOT) photodetectors, sensors. These will be complemented by optimised laser driving detector electronics, modulation signal conditioning technologies. paper presents WaterSpy concept, requirements elicited, preliminary architecture design device, cases which it validated, while highlighting innovative technologies that contribute to advancement current state art.