Patent 10209448 was granted and assigned to Skorpios Technologies on February, 2019 by the United States Patent and Trademark Office.
An integrated non-reciprocal polarization rotator comprises a substrate, a Faraday crystal, a first waveguide, and a second waveguide. The substrate has a recess extending to a predetermined depth. The Faraday crystal is mounted in the recess and optically coupled with the first waveguide and the second waveguide.