Dispersion managed interferometric fiber optic gyroscope

摘要

A dispersion managed interferometric fiber optic gyroscope comprising: a coupler coupled to the broadband light source via a first input fiber; an IOC comprising: a beamsplitter that directs the input signal to a first output and a second output; a combiner configured to combine a first return signal from the first output and a second return signal from the second output into a combined return signal; an integrated optical circuit input coupled to the coupler via a second input fiber; a fiber optic gyroscope sensing coil coupled to a first pigtail fiber and second pigtail fiber, the sensing coil comprising sensing fibers, wherein at least one dispersion slope of at least one of the first input fiber, second input fiber, first pigtail fiber, second pigtail fiber, and the sensing fibers is selected such that the signals at the IOC input has a second order coherence substantially equal to two.

主权项

1. A dispersion managed interferometric fiber optic gyroscope comprising:
a broadband light source configured to provide an input signal; a coupler coupled to the broadband light source via a first input fiber, the first input fiber configured to carry the input signal from the broadband light source to the coupler, wherein the coupler has a first coupler output and a second coupler output; a rate detector coupled to the second coupler output via an output fiber; an integrated optical circuit comprising:
a beamsplitter that directs the input signal to a first output and a second output;a combiner coupled to the first output and the second output, the combiner configured to combine a first return signal from the first output and a second return signal from the second output into a combined return signal;an integrated optical circuit input coupled to the first coupler output via a second input fiber, the second input fiber configured to carry the input signal from first coupler output to the integrated optical circuit input and the combined return signal from the integrated optical circuit input to the coupler; a first pigtail fiber coupled to the first output; a second pigtail fiber coupled to the second output; a fiber optic gyroscope sensing coil coupled to the first pigtail fiber and second pigtail fiber, the fiber optic gyroscope sensing coil comprising one or more sensing fibers, wherein the first pigtail fiber carries the input signal to the fiber optic gyroscope sensing coil and the first return signal from fiber optic gyroscope sensing coil to the first output, wherein the second pigtail fiber carries the input signal to the fiber optic gyroscope sensing coil and the second return signal from fiber optic gyroscope sensing coil to the second output; wherein at least one dispersion slope of at least one of the first input fiber, second input fiber, first pigtail fiber, second pigtail fiber, and the one or more sensing fibers is selected such that at least one of the input signal or combined return signal at the integrated optical circuit input has a second order coherence g11 substantially equal to two.