Analysis of convex rib hybrid surface plasmon waveguide with ultralong propagation distance and tight mode confinement

Abstract

A hybrid surface plasmon waveguide (HSPWG) with a convex rib added on the metal surface is further investigated and analyzed theoretically. The high mode confinement and long propagation distance can be realized simultaneously by optimizing the waveguide geometry. Our designed structures can provide mode area and propagation distance achieving close to λ 2 ∕512 and 2200 μm respectively, which are better than the performance of the traditional HSPWG. Our structures are excellent, promising candidates for improving plasmonic devices in the fields of ultrafast modulators and low-threshold nanolaser.

Perovskite Hybrid Surface Plasmon Waveguide

“…The long-range surface plasmonic waveguides [4] can achieve low loss and long-distance optical propagation, but at the expense of the field limiting ability. The hybrid plasmonic waveguide (HPW) structures have been proposed and widely studied in order to achieve low transmission loss and strong optical field limitation [5][6][7].…”