RESONANT FIBER OPTIC GYROSCOPE WITH POLARIZING CRYSTAL WAVEGUIDE COUPLER

摘要

Systems and methods for a resonant fiber optic gyroscopewith a polarizing crystal waveguide coupler are provided. In one embodiment, an optical fiber resonator (200) comprises: a polarizing single crystal material (110, 210) having a first crystal lattice axis;a first waveguide (112) formed in the crystal material; a second waveguide (114) formed in the crystal material running parallel to the first waveguide; and an optical fiber sensing coil (210). The first waveguide comprises a bend that approaches the second waveguide defining a coupling region between the first and second waveguides. The first and second waveguides are polarized to guide light having a polarization state aligned to the first crystal lattice axis. The second waveguide and the sensing coil are coupled into a resonator configuration forming a ring resonator, the second waveguide comprising a first port coupled to a first end of the coil, and a second port coupled to a second end of the coil.