Design a Photonic Crystal iber for Zinc-Cadmium Detecting Using Comsol Multiphysics

In this study, a sensor application based on the Mach-Zehnder modal interferometer MZI were employed to detect changes in the concentration values of heavy metals (zinc, cadmium). The Mach-Zehnder modal interferometer was used in all three applications. The basic structure of the sensor was implemented by the use of fusion splice PCF with a 2 cm length between two (SMF-25). At the fusion splice location, the air holes were completely compressed, allowing the core and cladding modes to be coupled and recombined with one another. The sensor immersed in a solution at different concentration levels of ranges (1-3,5,7-9) %. The Comsol Multiphysics (5.4v) program, was used to design the Photonic crystal fiber and test it with different concentrations of a mixture of zinc and cadmium. The sensitivity obtained was (78.02%).