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

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