Acousto-optic modulation using high-order optical modes in hybrid thin-film lithium niobate straight waveguides.
Integrated acousto-optic modulators (AOMs) supporting high-order optical modes have enlarged the functionality of photonic integrated circuits. In this work, non-collinear straight waveguide AOMs supporting pure first-order and second-order transverse electric modes (TE10, TE20) are experimentally presented based on a...