Relative Humidity Sensor

A photonic crystal fiber is a special class of fiber which is made of a single material and having air holes in the cladding. All the propagation characteristics such as the effective index mode, confinement loss, effective area, dispersion are studied by modeling and simulations by using Finite element method (FEM) using COMSOL MULTIPHYSICS 4.4 software. A PCFI that operates in reflection mode for humidity sensing is presented in this work, has the advantage that it does not require the use of any hygroscopic material. The fabrication of the sensor head is therefore simple since it only involves cleaving and splicing. The all-silica nature of the device has the potential for many applications.