Excitation of hybrid plasmon polaritons (HPPs) using nanofibers

Dielectric-loaded surface plasmon polariton (DLSPP) is a potential candidate for nanoscale optical elements with sizes much smaller than the diffraction limit and extremely low loss. In this work, we will combine the convenience of fiber based devices and the tight confinement of DLSPP waveguide, and then propose a nanofiber-loaded structure for the DLSPP application. Through the finite element method (FEM) modeling, we demonstrated the hybridization between hybrid surface plasmon polariton modes (HSPPs) and nanofiber modes, and analyzed the generation of hybrid plasmon polaritons (HPPs) super-modes. We also showed the existence of higher order HSPP, which is helpful to reduce the bending loss of DLSPP structure. Due to its polarization dependent transmission loss, we demonstrated one of its applications as polarizer experimentally.