Abstract
Liquid water unwillingly forms in electric device and machinery, and often deteriorate their performance, leading to the motivation to develop the measurement tool for liquid water. We thought up a new sensor to measure water droplet distribution by using single optical fiber. The principle in this sensor based on OCDR (Optical Coherence Domain Reflectometry) so-called; wiring single fiber in target domain and measuring reflect light in the fiber works as sensor to measure water-droplet distribution. We fabricated two gaps in a single fiber, which perform as the detector of single droplet. We verified its performance with forcedly putting water droplet on/off. We found that the two gaps well worked as sensor independently, and that each sensor caught the water adhesion events and their location.
