Ultra-compact and High Performance Three-Way Optical Power Splitter

This work presents an ultra-compact and feasible three-way power splitter design tailored for photonic integrated circuits, achieved through topological optimization employing a custom-developed genetic algorithm. Miniaturization of waveguide turns, which are critical part of all optical systems, directly contributes to compactness of the system. The considered method maintains good transmission uniformity and minimal mode mismatch while allowing global shape reconfiguration within a confined footprint of 1.56 λ² ( λ=1550 nm) unlike conventional curve-based methods. The optimized structure demonstrates a 93% output similarity validated through time-domain simulations. These remarkable performance outcomes can be implemented on both communication wavelength and microwave applications.