[14p-2D-1~19] 4.4 Opto-electronics

▲ [14p-2D-15] Measurement of relative humidity using Gelatin-coated multilayer fiber

〇(D)Sudip Chatterjee¹, Saba Khan¹, Partha Roy Chaudhuri¹ (1.Indian Institute of Technology Kharagpur)

Keywords:Humidity,Fiber optic sensor,Tapered fiber

We report an experimental method to measure the relative humidity using a standard optical fiber coated with hydrophilic polymer material (Gelatin). A linear response of the output power is found with the change in RH from 40% to 92%. An optimization recipe of such a sensing configuration is underway and would be presented in the symposium along with the worked out theoretical formulation.