National Technical University of Athens (NTUA), 15773 Athens, Greece.
University of West Attica, Athens 12243, Greece.
Sensors (Basel). 2018 Dec 21;19(1):33. doi: 10.3390/s19010033.
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 the use of advanced Quantum Cascade Lasers (QCLs) employing the Vernier effect, used as light source, with novel, fibre-coupled, fast and sensitive Higher Operation Temperature (HOT) photodetectors, used as sensors. These will be complemented by optimised laser driving and detector electronics, laser modulation and signal conditioning technologies. The paper presents the WaterSpy concept, the requirements elicited, the preliminary architecture design of the device, the use cases in which it will be validated, while highlighting the innovative technologies that contribute to the advancement of the current state of the art.
在本文中,我们介绍了 WaterSpy 项目,该项目正在开发一种创新的、紧凑的、具有成本效益的中红外光谱范围内的普及水质感应用光子设备。该方法结合了使用先进的量子级联激光器(QCL)利用游标效应作为光源,以及新型的光纤耦合、快速和敏感的高温(HOT)光电探测器作为传感器。这些将辅以优化的激光驱动和探测器电子设备、激光调制和信号调理技术。本文介绍了 WaterSpy 的概念、提出的要求、设备的初步架构设计、将对其进行验证的用例,同时强调了有助于推动当前技术水平的创新技术。