SMALL LOW COST RESONATOR FIBER OPTIC GYROSCOPE WITH REDUCED OPTICAL ERRORS

摘要

Systems and methods for a small low cost resonator fiber optic gyroscope (RFOG) with reduced optical errors are provided. In one embodiment, a RFOG comprises: a light source; an optical chip configured to couple a clockwise optical signal and a counterclockwise optical signal from the light source into a fiber optic resonator and couple the clockwise optical signal and the counterclockwise optical signal from the fiber optic resonator to at least one photodetector. The fiber optic resonator comprises a fiber optic coil having a first end point and a second end point. The fiber optic coil has a 90-degree splice located substantially half-way between the first end point and the second end point, is wrapped around a first fiber stretcher located between the first end point and the 90-degree splice, and is wrapped around a second fiber stretcher that is located between the second end point and the 90-degree splice.

主权项

1. A resonator fiber optic gyroscope comprising:
at least one tunable light source configured to emit a clockwise optical signal and a counterclockwise optical signal; an optical chip configured to receive the clockwise optical signal and the counterclockwise optical signal, wherein the optical chip couples the clockwise optical signal and the counterclockwise optical signal from the at least one tunable light source into a fiber optic resonator and couples the clockwise optical signal and the counterclockwise optical signal from the fiber optic resonator to at least one photodetector; the fiber optic resonator comprising a fiber optic coil having a first end point and a second end point,
wherein the fiber optic coil has a 90-degree splice located substantially half-way between the first end point and the second end point,wherein the fiber optic coil is wrapped around a first fiber stretcher that is located between the first end point and the 90-degree splice, andwherein the fiber optic coil is wrapped around a second fiber stretcher that is located between the second end point and the 90-degree splice; and the at least one photodetector configured to sample the clockwise optical signal and the counterclockwise optical signal.