On-Chip Slot-Assisted Acousto-Optic Modulators Using X-Cut Thin-Film Lithium Niobate

We develop on-chip slot-assisted acoustic-optic modulators based on X-cut thin-film lithium niobate that can achieve the total relative refractive index change of about 5.49×10-10, corresponding to the VπL about 0.0084 V·cm.