Optimization of the optical coupling in nanowire-based integrated photonic platforms by FDTD simulation

Nan Guan; Andrey Babichev; Martin Foldyna; Dmitry Denisov; François H Julien; Maria Tchernycheva

doi:10.3762/bjnano.9.209

Optimization of the optical coupling in nanowire-based integrated photonic platforms by FDTD simulation

Beilstein J Nanotechnol. 2018 Aug 22:9:2248-2254. doi: 10.3762/bjnano.9.209. eCollection 2018.

Authors

Nan Guan¹, Andrey Babichev², Martin Foldyna³, Dmitry Denisov⁴, François H Julien¹, Maria Tchernycheva¹

Affiliations

¹ Centre de Nanosciences et de Nanotechnologies (C2N), UMR9001 CNRS, University Paris-Sud, University Paris-Saclay, 91405 Orsay, France.
² ITMO University, Kronverkskiy Prospekt 49, 197101 St. Petersburg, Russia.
³ LPICM-CNRS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau, France.
⁴ Saint Petersburg Electrotechnical University "LETI", ul. Professora Popova 5, 197376 Saint Petersburg, Russia.

Abstract

The optimized design of a photonic platform based on a nanowire light emitting diode (LED) and a nanowire photodetector connected with a waveguide is proposed. The light coupling efficiency from the LED to the detector is optimized as a function of the geometrical parameters of the system using the finite difference time domain simulation tool Lumerical. Starting from a design reported in the literature with a coupling efficiency of only 8.7%, we propose an optimized photonic platform with efficiency reaching 65.5%.

Keywords: FDTD modeling; SiN/InGaN co-integration; nanowire LED; nitride nanowires; photonic integrated circuit; photonic platform; visible light communication.