Reconfigurable integrated photonic processor based on parallel-coupled microring assisted MZI

To address the diverse demands in various application scenarios, such as optical filtering and microwave signal processing, an integrated photonic processor with function reconfigurability and performance tunability is increasingly attracting attention and research efforts. In this work, we propose and experimentally validate a reconfigurable photonic processor based on parallel-coupled microring assisted Mach-Zehnder interferometer (MZI). By controlling metal heaters above the device, the device can be reconfigured to perform multiple functions with distinct performance characteristics, including optical switch, finite impulse response (FIR) and infinite impulse response (IIR) filtering, resonance splitting, electromagnetically induced transparency (EIT)-like resonance, and Fano resonances. The experimental results demonstrate that the proposed photonic processor has flexible function reconfigurability and can be effectively tuned to meet specific application requirements, highlighting its significant practical value.