US Patent Issued on May 12 for "Passive topologically biased Sagnac interferometer as a rotational sensor capable of sensing magnitude and direction of rotation" (Massachusetts Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,950, issued on May 12.

"Passive topologically biased Sagnac interferometer as a rotational sensor capable of sensing magnitude and direction of rotation" was invented by Farhad Hakimi (Bedford, Mass.) and Hosain Hakimi (Bedford, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Many optical gyroscopes are based on an optical Sagnac interferometer configuration, including various interferometric fiber-optic gyroscopes (IFOGs), to measure the magnitude and direction of rotation. IFOGs require active phase modulation in their fiber coil to decipher the direction of rotation. This patent document discloses a new type of IFOG that utilizes a passive to...