Investigation of Relative Humidity Sensing Using Tapered No-Core Fiber Coated With Graphene Oxide Film. - Hua Yang; Juan Liu 010; Bin Liu 048; Chaowei Luo; Zhen Yi; Lichun Ma; Sheng-Peng Wan; Andrew R. Pike; Yong Qing Fu; Qiang Wu 005; Xingdao He (IEEE Access, 2020)