Reconfigurable Double-Injection Ring Resonator for Integrated Microwave Photonic Signal Processing

Integrated microwave photonic (MWP) signal processor relies on the integration of multiple optical circuits, advanced functionalities, and high-performance for radio frequency (RF) applications. In this paper, we experimentally investigated a new kind of an on-chip MWP signal processor in silicon nitride, containing of a Modulation Transformer (MT) and a Double-Injection Ring Resonator (DIRR). This optical circuit enables the synthesis of reconfigurable spectral shaping for advanced functionality unmatched by conventional MWP circuits.