Patent ID: 9441969
Filing Date: 2016-09-13
CPC Classification: G01C,G02B

Claim Text:
1. A resonant fiber optic gyroscope system comprising: a first laser source configured to generate a clockwise signal having a first phase; a second laser source configured to generate a counterclockwise signal having a second phase; a clockwise input optical fiber optically coupled to the first laser source; a counterclockwise input optical fiber optically coupled to the second laser source; a transport fiber having at least a first core and second core, wherein the first and second cores are configured along the length of the transport fiber to have a proximity such that the phase relationship between the first and second phases is substantially maintained as the clockwise and counterclockwise signals travel through the first and second cores; a first coupler configured to optically couple the clockwise signal from the clockwise input optical fiber to the first core, and the counterclockwise signal from the counterclockwise input optical fiber to the second core; a second coupler configured to optically couple the clockwise signal from the first core to a clockwise resonator fiber, and the counterclockwise signal from the second core to a counterclockwise resonator fiber; a resonator having a clockwise input and a counterclockwise input, the clockwise input coupled to the first clockwise resonator fiber, the counterclockwise input coupled to the counterclockwise resonator fiber.