Mie-driven directional nanocoupler for Bloch surface wave photonic platform

Nanophotonics

Bessonov Vladimir O.¹  Shilkin Daniil A.¹  Popkova Anna A.¹  Gulkin Dmitry N.¹  Afinogenov Boris I.¹  Fedyanin Andrey A.¹  Kuršelis Kęstutis²  Chichkov Boris N.² 

[1] Faculty of Physics, Lomonosov Moscow State University, Moscow119991, Russia;Leibniz Universität Hannover, Institut für Quantenoptik, Hannover30167, Germany;

关键词: bloch surface waves;    laser-induced backward transfer;    leakage radiation microscopy;    mie resonances;    multiplexer;    silicon nanoparticles;   

DOI  :  10.1515/nanoph-2021-0295

来源: DOAJ

【 摘 要 】

Modern integrated photonic platforms should combine low-loss guiding, spectral flexibility, high light confinement, and close packing of optical components. One of the prominent platforms represents a one-dimensional photonic crystal combined with dielectric nanostructures that manipulate low-loss Bloch surface waves (BSWs). Proper design of nanostructures gives rise to a variety of optical resonances suitable for efficient capturing and controlling light. In this work, we achieve color-selective directional excitation of BSWs mediated by Mie resonances in a semiconductor nanoparticle. We show that a single silicon nanoparticle can be used as a subwavelength multiplexer switching the BSW excitation direction from forward to backward within the 30 nm spectral range with its central wavelength governed by the nanoparticle size. Our work opens a route for the on-demand fabrication of photonic nanocouplers with tailored optical properties and submicron footprint.

【 授权许可】

Unknown