US Patent Issued on May 6 for "Fiber-optic gyroscope with a dual-injection polarization-maintaining 3x3 directional coupler for enhanced measurement sensitivity through heterodyne" (Taiwanese Inventors)

ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,287, issued on May 6.

"Fiber-optic gyroscope with a dual-injection polarization-maintaining 3x3 directional coupler for enhanced measurement sensitivity through heterodyne" was invented by Chi-Luen Wang (Taipei, Taiwan) and Ju-Tah Tung (New Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An improved fiber-optic gyroscope (FOG) is proposed for enhancing the optical measurement sensitivity through the application of a heterodyne effect. The improved FOG is characterized by the use of a dual-injection polarization-maintaining 3x3 directional coupler which is configured to receive a pair of source light beams that are injected thereinto in...