Open AccessModal and wavelength conversions in plasmonic nanowires
Author(s) -
Adrian Agreda,
Diksha Sharma,
Gérard Colas des Francs,
G. V. Pavan Kumar,
Alexandre Bouhélier
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.421183
Subject(s) - nanowire , plasmon , modal , multiplexing , optics , materials science , wavelength , surface plasmon , nonlinear system , broadband , optoelectronics , physics , telecommunications , computer science , quantum mechanics , polymer chemistry
We show that plasmonic nanowire-nanoparticle systems can perform nonlinear wavelength and modal conversions and potentially serve as building blocks for signal multiplexing and novel trafficking modalities. When a surface plasmon excited by a pulsed laser beam propagates in a nanowire, it generates a localized broadband nonlinear continuum at the nanowire surface as well as at active locations defined by sites where nanoparticles are absorbed (enhancement sites). The local response may couple to new sets of propagating modes enabling a complex routing of optical signals through modal and spectral conversions. Different aspects influencing the optical signal conversions are presented, including the parameters defining the local formation of the continuum and the subsequent modal routing in the nanowire.