High coupling efficiency (CE) edge coupler are crucial for thin-film lithium niobate (TFLN) photonic integrated devices. We design and simulate a kind of high-performance b ident edge coupler based on ...

We design and simulate a kind of high-performance chirped blazed grating coupler based on thin-film lithium niobate (TFLN) using particle swarm optimization. The results show that the coupler has a ...