Filter designs for a reconfigurable photonic integrated circuit

This paper presents non-classical bandpass filter designs for a reconfigurable photonic integrated circuit (PIC). Because the designs must be realizable for a high frequency range in a new optical device, we consider digital infinite-impulse response filters that avoid lasing for a specific unit cell configuration. In order to accommodate the architecture of the PIC, we describe a design procedure for bandpass filters in the 10 GHz frequency range based on a prototype filter constructed from second-order sections.