Numerical analysis of metal-layer in optical fiber clad

This paper presents a simulation result of confinement loss in a specialty optical fiber. The optical fiber is designed to have a thin metal-layer in the optical fiber clad. The optimum distance of copper layer from fiber core is determined by calculating the confinement loss. The confinement losses are observed by varying the copper diameter from core. The COMSOL multi-physics 5.3 is used as the simulation tool. The proposed design may potentially pave a broad range of applications including high-sensitive plasmonic biosensor and filtering devices.