Optical fiber Fabry-Perot interferometer with pH sensitive hydrogel film for hazardous gases sensing

• Main Authors: Zheng, Yangzi, Chen, Li Han, Chan, Chi Chiu, Dong, Xinyong, Yang, Jingyi, Tou, Zhi Qiang, So, Ping Lam
• Other Authors: Kalinowski, Hypolito J.
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Optical Fiber; Polyvinyl Alcohol; DRNTU::Engineering::Chemical engineering
• Online Access: https://hdl.handle.net/10356/88902; http://hdl.handle.net/10220/47001
• Institution: Nanyang Technological University

An optical fiber Fabry-Perot interferometer (FPI) coated with polyvinyl alcohol/poly-acrylic acid (PVA/PAA) hydrogel film for toxic gases measurement has been developed. Splicing a short section of hollow core fiber between two single mode fibers forms the FPI. Dip-coated pH-sensitive PVA/PAA hydrog...