title: Novel polyimide coated fiber Bragg grating sensing network for relative humidity measurements.
abstract: A novel relative humidity (RH) sensing network based on ultra-weak fiber Bragg gratings (FBGs) is proposed and demonstrated. Experiment is demonstrated on a 5 serial ultra-weak FBGs sensing network chopped from a fiber array with 1124 FBGs. Experimental results show that the corresponding RH sensitivity varies from 1.134 to 1.832 pm/%RH when ambient environmental RH changes from 23.8%RH to 83.4%RH. The low-reflectance FBGs and time-division multiplexing (TDM) technology makes it possible to multiplex thousands of RH sensors in single optical fiber.
authors.forename: Wei
authors.initials: W
authors.lastname: Bai
authors.forename: Minghong
authors.initials: M
authors.lastname: Yang
authors.forename: Jixiang
authors.initials: J
authors.lastname: Dai
authors.forename: Haihu
authors.initials: H
authors.lastname: Yu
authors.forename: Gaopeng
authors.initials: G
authors.lastname: Wang
authors.forename: Chongjie
authors.initials: C
authors.lastname: Qi