Design and analysis of a highly sensitive octagonal hollow core photonic crystal fiber for chemical sensing

Due to the dire need to monitor, sense, and control useful and harmful chemicals for industrial, environmental, and biomedical purposes, chemical sensing has become an eminent topic among researchers. Hence, we focus mainly on a modified kagome design with a relatively high sensitivity of 99.8%, effective material loss of 0.000263 cm(-1) for constant absorption loss, and 0.0004204 cm(-1) for variable absorption loss and low confinement loss of 2.117 x 10(-17) cm(-1) investigated with the help of the full vector finite element method in Comsol multiphysics using water, ethanol, and benzene as analytes while considering other parameters, such as nonlinearity, dispersion, numerical aperture, and effective area which are equally investigated and discussed. The results obtained are tabulated and compared with recent works published. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)