Sensitivity enhancement of porous silicon waveguide sensor using graphene by FDTD with Lumerical software

Abstract

The aim of this paper is to analyze the effect of adding graphene layer on the porous silicon waveguide sensor. From rigorous theoretical calculations it is found that the resonant porous silicon sensor shows a 60-fold improvement in sensitivity over conventional SPR technology [1]. This paper proposes a Psi waveguide sensor designed in FDTD Lumerical software[2] with graphene layer. Due to having extraordinary properties, the added graphene layer increases the sensitivity of the sensor. This designed Psi waveguide sensor can be used as DNA detector[1], Optical gas sensor[3], Novel liquid sensor[4], Vapour sensor[5] with better sensitivity.