Patent · US Active

Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same

US8497994B2 · kind B2 · utility

4Cited by
5References
5Claims
0Family size

Inventor

Key dates

Filing dateFeb 13, 2009
Grant dateJul 30, 2013
Priority date—
Expiry dateMay 13, 2030

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01C19/72
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An interferometer employed, in part, as a Sagnac interferometer or fiber optic gyro (FOG) includes a light source (100) that provides a source light wave that is split into first and second light waves that are directed to traverse a defined optical loop path (508, 500) in opposite directions. The defined optical loop path (508, 500) in accordance with the present invention is provided by multiple waveguides wound into a coil such that the opposite traveling first and second light waves serially travel through all of the waveguides in opposite directions around the optical loop path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.