Movable Fiber-Integrated Hybrid Plasmonic Waveguide on Metal Film

TL;DR

This paper proposes a movable hybrid plasmonic waveguide combining a tapered nanofiber and metal film, enabling efficient excitation and collection of localized modes for enhanced light-matter interactions.

Contribution

It introduces a novel waveguide design supporting highly localized hybrid plasmonic modes with efficient fiber coupling, suitable for quantum and nonlinear optical applications.

Findings

Supports highly localized hybrid plasmonic modes

Enables efficient in-line fiber excitation and collection

Enhances electromagnetic fields for quantum optics

Abstract

A waveguide structure consisting of a tapered nanofiber on a metal film is proposed and analyzed to support highly localized hybrid plasmonic modes. The hybrid plasmonic mode can be efficiently excited through the in-line tapered fiber based on adiabatic conversion and collected by the same fiber, which is very convenient in the experiment. Due to the ultrasmall mode area of plasmonic mode, the local electromagnetic field is greatly enhanced in this movable waveguide, which is potential for enhanced coherence light emitter interactions, such as waveguide quantum electrodynamics, single emitter spectrum and nonlinear optics.