Design of tunable notch filter based on plasmonic and InGaAsP waveguide

Abstract A highly efficient compact tunable optical notch filter is proposed and analyzed using the 2D Finite Element Method (FEM). The structure consists of a slanted stub plasmonic resonator, Metal–Insulator–Metal (MIM) waveguide, InGaAsP as third-order non-linear material. By altering pumping state InGaAsP, filtered wavelengths may be easily controlled continuously over 200 nm range. suggested can remove four narrow bands wavelengths, each around 50 wide, transmission about − 17 dB. filter’s key advantages are its high coefficient fabrication simplicity with size. For future integrated devices such outdoor visible light communications imaging, manufactured an oblique angle shadow evaporation technique.