Integrated Microwave Photonic Spectral Shaping For Linearization and Spurious-Free Dynamic Range Enhancement

Integrated microwave photonics (MWP) is a fast growing area where high frequency signals are processed in the optical domain, merging key advantages of both and photonic integrated circuits (PICs) technologies including low-loss, reconfigurability, advanced functionality, enhanced stability, reduced footprint. Plenty functionalities have been demonstrated MWP, especially based on spectral shaping technique, phase amplitude spectrum precisely tailored by PICs. However, on-chip linearization lagging behind has not investigated deeply. It crucial urgent to study methods, which will lead MWP systems with large spurious-free dynamic range (SFDR). In this paper, we present two novel techniques for links. The first technique line-by-line complex using series ring resonators. second relies spatial separation achieve parallel complementary channels. Both methods low-loss programmable silicon nitride that can already host number functionalities. Our results point great potential integrating same platform.