Open AccessHybrid surface phononic waveguide using hyperbolic boron nitride
Author(s) -
Yuancheng Xu,
Navaneeth Premkumar,
Yuchen Yang,
Brian A. Lail
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.017183
Subject(s) - materials science , waveguide , optics , polariton , diffraction , optoelectronics , boron nitride , photonics , coupling (piping) , wavelength , photonic crystal , surface wave , physics , nanotechnology , metallurgy
Sub-diffraction limited waveguides have been studied as a means to manipulate light into nanoscale regions. Hybrid waveguides are popular candidates in optical regimes for subwavelength confinement and long range propagation. However, advances in the mid-IR are lacking due to high propagation losses and limited confinement. Here we present the first analysis of hybrid phononic waveguide using a hyperbolic material h-BN to generate surface phonon polaritons. The strong coupling between the photonic cylinder and phononic surface enhances the confined field up to 10 -3 λ o 2 (λ o is free-space wavelength) and enables propagation distances up to 100 λ o . Our work is fully compatible with integrated polaritonic devices in the mid-IR and provides a systematic approach to design hybrid phononic waveguides.