US Patent Issued to ADTRAN NETWORKS on Sept. 8 for "Method and apparatus for compensating a reference frequency shift" (Swiss Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,954, issued on Sept. 8, was assigned to ADTRAN NETWORKS SE (Meiningen-Dreissigacker, Germany).

"Method and apparatus for compensating a reference frequency shift" was invented by Patrick Berthoud (Preles, Switzerland), Manuel Haldimann (La Sagne, Switzerland) and Vladimir Dolgovskiy (Marin-Epagnier, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for compensating a reference frequency shift due to an interaction of resonant light provided by a resonant light source with atoms of an atomic beam crossing a resonant microwave cavity between light interaction zones includes toggling a wavelength of the provided resonant light between...