US Patent Issued to The Trustees of Columbia University in the City of New York on Oct. 21 for "Low frequency wave generation via optical frequency division" (New York, New Jersey Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,713, issued on Oct. 21, was assigned to The Trustees of Columbia University in the City of New York (New York).

"Low frequency wave generation via optical frequency division" was invented by Yun Zhao (New York), Jae K Jang (New York), Yoshitomo Okawachi (River Edge, N.J.), Bok Young Kim (New York), Alexander L Gaeta (New York) and Michal Lipson (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, methods, and devices for generating tunable low frequency signals, such as microwave and radiofrequency signals are disclosed. A first waveguide in optical communication with a first ring resonator can be configured to receive a light input and...