A Multiphysics Simulation Approach for Photonic Devices Integrating Phase Change Materials

This work presents a three-dimensional electromagnetic and heat-transfer multiphysics simulation approach for the design and optimization of photonic devices that integrate phase change materials (PCMs) for emerging photonic computing systems. Leveraging the multiphysics simulation, a PCM-based compact and low-loss phase shifter is designed with 24 µs latency for π phase shift and a maximum insertion loss of 0.3 dB/π when the PCM is in the crystalline state.