WANG Yifei, WANG Mengmeng, WEN Feng, et al. Research progress of fiber-optic humidity sensor based on Mach-Zehnder interference[J]. 2021, (7): 1-4+8. DOI: 10.13873/J.1000-9787(2021)07-0001-04.
Relative humidity detection is widely used in industry and agriculture.The latest research progress of optical fiber humidity sensor based on Mach-Zehnder interferometer(MZI) at home and abroad is reviewed.The key parameters such as sensitivity
time response and temperature sensitivity of different types of fiber optic interferometric structures are compared.The advantages and disadvantages of various interferometric structures are analyzed
and the development prospect of this kind of humidity sensor is prospected.