Optical gyroscope with weak measurement amplification readout

US11619493B2 · kind B2 · utility

Assignee

• DRS Network & Imaging Systems, LLC · US

Inventors

• Marco Lopez · Frankfurt, DE
• Andrew Jordan · Rochester, US
• Kevin Lyons · Clifton Park, US
• John H. Steinmetz · Bridgeport, US

Key dates

• Filing date: Oct 26, 2021
• Grant date: Apr 4, 2023
• Expiry date: Oct 26, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/29338
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A photonic device for detecting rotation and a corresponding method for operation thereof are disclosed. The photonic device includes a readout structure coupled to a ring resonator at one or more coupling points. Light is split between a lower waveguide and an upper waveguide of the readout structure in a forward direction at a beam splitter. The light in the waveguides traveling in the forward direction is coupled into the ring resonator and subsequently back into the waveguides in a reverse direction. The light is spatially phase tilted and is combined at the beam splitter. The combined light is detected by a split detector.