Abstract
AbstractExploration of the flatband in photonics is fundamentally important, aiming to control the localization of light for potential applications in optical communications. Herein, the flatband physics is studied in a synthetic space including the frequency axis of light. A ring‐resonator array is used to construct a synthetic Lieb‐type lattice, where the modulation phase distribution supports a locally non‐zero effective magnetic flux pointing into the synthetic space. It is found that the flatband is isolated from other dispersive bands and the light can still be localized even with perturbation from the group velocity dispersion of the waveguide. This work points out a route towards manipulating the localization performance of a wavepacket of light along both the spatial dimension and the frequency dimension, which holds the potential implication for controlling the storage of optical information in dispersive materials.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
