Gigahertz-frequency acousto-optic phase modulation of visible light in a CMOS-fabricated photonic circuit.

ABSTRACT: Optical phase modulators operating at visible wavelengths are essential components for photonic technologies such as those for quantum control, communications, and laser ranging. However, they remain challenging to implement in scalable, integrated platforms capable of handling high optical powers. Here we present a visible-light, gigahertz-frequency acousto-optic phase modulator, fabricated on a 200-mm wafer in a volume CMOS foundry, that supports greater than 500 mW of optical power at 730 nm. The device combines a piezoelectric transducer and a photonic waveguide within a single, wavelength-scale structure that confines both a propagating optical mode and an electrically excitable breathing-mode mechanical resonance. By tuning the device's geometry to optimize the optomechanical interac

SUBMITTER: Freedman JM 

PROVIDER: S-EPMC12686435 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature