Abstract
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 ${\rm{Si}}_3 {{\rm{N}}_4}$ as the core layer and ${\rm{Si}}{{\rm{O}}_2}$ as the cladding layer. We used the particle swarm optimization algorithm to optimize high-performance random distributed OPAs. Our study provides an effective pathway to optimize the random distributed OPAs within a controllable time frame among a vast number of parameters.
© 2021 Optical Society of America
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