Optimization of aperiodic 3D optical phased arrays based on multilayer SiN/SiO platforms.

Silicon-based optical phased arrays (OPAs) have been widely explored, while the design of the structure with high sidelobe level reduction, remains a big challenge. This work investigated the optimization of the optical path-modulated 3D OPAs with as the core layer and as the cladding layer. We used the particle swarm optimization algorithm to optimize high-performance random distributed OPAs.

Optimization of the silicon-based aperiodic optical phased array antenna.

Beam engineering is one of the most important functionalities in light detection and ranging (LiDAR). In this work, a silicon optical phased array (OPA) is employed to control the beam profile. Machine-learning-based genetic algorithm optimization is utilized to suppress the sidelobes of the far field pattern assuming the random distribution of aperiodic arrays.