Research team develops ultra-wideband coupler for highly efficient second harmonic generation
Three-dimensional structure of the X-cut edge coupler, consisting of a suspended SiO2 waveguide and a three-layer SSC. Credit: Liu et al. Advanced Photonics Nexus (2022). DOI 10.1117/1.APN.1.1.016001 Thin-film lithium niobate (TFLN) has recently emerged as a versatile nanophotonic platform. With the advantages of high optical confinement, enhanced light-matter interaction, and flexible control of scattering, TFLN-based … Read more