Optical fiber sensor based on hybrid material: Comparative study of theoretical model and fabricated sensor

The main intention to present this work is to analyze the theoretical aspect of the optical fiber based relative humidity sensor. The sensor was fabricated using layer by layer (LbL) deposition on the tip of the optical fiber. Corresponding results of fabricated relative humidity sensor using different material like SiO
₂
, ZnO and Hybrid material were compared with theoretical results. A comprehensive experimental investigation was carried out to examine the sensing response. Sensing studies were performed by Fabry-Perot sensing mechanism with different saturated salt solutions, which provide fixed relative humidity.