Inverse-design algorithms generate silicon nitride photonic devices up to 500X smaller than hand-engineered components

https://www.eurekalert.org/news-releases/1137872

"optimization algorithm finds ultra-compact nanostructures with dramatically increased AI data center/ co-packaged optic packing density... inverse-designed mirrors: up to 98.5% optical reflectivity while suppressing spatial modes, light in micro-cavities recirculates >100X... inputs: minimum lithographic feature sizes/ process variation tolerances... low-loss, dense, scalable optical routing/ multiplexing... foundry compatible fabrication: wavelength splitters, spatial mode sorters, high-reflectivity mirrors"