Spectral Engineering of Optical Microresonators in Anisotropic Lithium Niobate Crystal (Adv. Mater. 17/2024)

Spectral Engineering A microring resonator with specially designed geometric modulation profiles along the ring circumference is used to arbitrarily engineer the spectral properties of optical resonances in the anisotropic lithium niobate platform. Using this novel design, a frequency-domain "mirror" is constructed to precisely control the optical energy flow in the synthetic frequency dimension. More details can be found in article number 2308840 by Ke Zhang, Cheng Wang, and co-workers.