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Sensors 2017, 17(9), 2110;

An Optical-Fiber-Based Airborne Particle Sensor

Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
Author to whom correspondence should be addressed.
Received: 1 July 2017 / Revised: 26 August 2017 / Accepted: 6 September 2017 / Published: 14 September 2017
(This article belongs to the Special Issue Air Pollution Sensors: A New Class of Tools to Measure Air Quality)
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A new optical-fiber-based airborne particle counter is reported. Unlike traditional light-scatter-based techniques, the particle is detected through the drop in optical fiber coupling efficiency as the particle disrupts the electromagnetic mode of the optical beam. The system is simple, substantially smaller than traditional systems, and does not require high power laser input. This makes it attractive for wearable air quality monitors where size is a premium. There is close agreement between theoretical model and experimental results for solid and liquid particles in the 1 to 10 µm range. View Full-Text
Keywords: particle sensor; fiber optic sensor; aerosol detection; scattering measurements particle sensor; fiber optic sensor; aerosol detection; scattering measurements

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Wang, Y.; Muth, J.F. An Optical-Fiber-Based Airborne Particle Sensor. Sensors 2017, 17, 2110.

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