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 and
• Maria Tchernycheva

Beilstein J. Nanotechnol. 2018, 9, 2248–2254, doi:10.3762/bjnano.9.209

• , Russia LPICM-CNRS, Ecole Polytechnique, Université Paris-Saclay, 91128 Palaiseau, France, Saint Petersburg Electrotechnical University "LETI", ul. Professora Popova 5, 197376 Saint Petersburg, Russia 10.3762/bjnano.9.209 Abstract The optimized design of a photonic platform based on a nanowire light

• 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; nanowire LED; nitride nanowires; photonic integrated circuit; photonic platform; SiN/InGaN co-integration; visible light

• expected to improve the LED–detector coupling efficiency. Recently, an integrated photonic platform consisting of an InGaN/GaN NW LED and a p–n NW photodiode interconnected with a SiNx waveguide was demonstrated [30]. The communication took place in the visible spectral range (λ ≈ 400 nm). This platform