Functionalized fiber-optic long-period grating with reduced cladding size for humidity sensing

• Main Authors: Wei, Heming, Tan, Chee Leong, Amrithanath, Abhishek K., Krishnaswamy, Sridhar
• Format: Article
• Published: Society of Photo-Optical Instrumentation Engineers (SPIE) 2019
• Subjects: QC Physics; TJ Mechanical engineering and machinery
• Online Access: http://eprints.um.edu.my/23176/; https://doi.org/10.1117/1.OE.58.3.037105

Relative humidity (RH) is an important factor in the field of structural health monitoring, especially during the early stage of corrosion. Many methods have been proposed for humidity sensing, and one of the attractive sensors is fiber-optic long-period grating (LPG) sensors. Unfortunately, the cur...