OPTICAL FREQUENCY COMB STIMULATED BRILLOUIN SCATTERING GYROSCOPE
First Claim
1. A system comprising:
- a light source configured to produce a multiple-frequency light beam based on an optical frequency comb;
an optical fiber resonator coupled to the light source, the multiple-frequency light beam based on an optical frequency comb generated by the light source propagating in a first direction within the optical fiber resonator, wherein the multiple-frequency light beam based on an optical frequency comb generates stimulated Brillouin scattering for at least one frequency, wherein the Brillouin scattering generates a stimulated Brillouin scattering light beam containing at least one frequency component to propagate in the optical fiber resonator in a second direction, the first direction being opposite in direction to the second direction;
at least one servo that controls the frequencies of the optical frequency comb so that a plurality of component frequencies of the optical frequency comb are locked on resonance peaks of the optical fiber resonator in the first direction; and
a mixer configured to determine a frequency difference between the stimulated Brillouin scattering light beam and the multiple-frequency light beam.
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Accused Products
Abstract
Systems and methods for measuring rotation using an optical frequency comb stimulated Brillouin scattering gyroscope are provided. In certain embodiments, a system comprises a light source that produces a multiple-frequency light beam based on an optical frequency comb; and an optical fiber resonator coupled to the light source, the multiple-frequency light beam propagating in a first direction within the optical fiber resonator, wherein the multiple-frequency light beam generates stimulated Brillouin scattering (SBS) for a frequency, wherein the Brillouin scattering generates an SBS light beam to propagate in a second direction, the first direction being opposite in direction to the second direction. The system also comprises a servo to control the frequencies of the optical frequency comb to lock a plurality of component frequencies on resonance peaks of the optical fiber resonator; and a mixer that determines a frequency difference between the SBS light beam and the multiple-frequency light beam.
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Citations
20 Claims
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1. A system comprising:
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a light source configured to produce a multiple-frequency light beam based on an optical frequency comb; an optical fiber resonator coupled to the light source, the multiple-frequency light beam based on an optical frequency comb generated by the light source propagating in a first direction within the optical fiber resonator, wherein the multiple-frequency light beam based on an optical frequency comb generates stimulated Brillouin scattering for at least one frequency, wherein the Brillouin scattering generates a stimulated Brillouin scattering light beam containing at least one frequency component to propagate in the optical fiber resonator in a second direction, the first direction being opposite in direction to the second direction; at least one servo that controls the frequencies of the optical frequency comb so that a plurality of component frequencies of the optical frequency comb are locked on resonance peaks of the optical fiber resonator in the first direction; and a mixer configured to determine a frequency difference between the stimulated Brillouin scattering light beam and the multiple-frequency light beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gyroscope comprising:
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an optical fiber resonator; a light source configured to provide a multiple-frequency light beam based on an optical frequency comb to the optical fiber resonator, the multiple-frequency light beam propagating through the optical fiber resonator in a first direction within the optical fiber resonator, wherein the multiple-frequency light beam stimulates Brillouin scattering for at least one frequency, the Brillouin scattering causing a stimulated Brillouin scattering light beam containing at least one frequency component to propagate in the optical fiber resonator in a second direction, the first direction being opposite in direction to the second direction, wherein a plurality of frequency components in the multiple-frequency light beam are locked to resonance peaks of the optical fiber resonator and the plurality of frequency components have a frequency separation that tracks free spectral range drift of the optical fiber resonator; a mixer configured to determine a frequency difference between the at least one stimulated Brillouin scattering light beam and the multiple-frequency light beam; and a rate output coupled to the mixer, the rate output configured to determine the rate of rotation based on the frequency difference. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for measuring rotation, the method comprising:
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propagating a multiple-frequency light beam based on an optical frequency comb through an optical fiber resonator in a first direction, wherein the multiple-frequency light beam stimulates a stimulated Brillouin scattering light beam containing at least one frequency component, the stimulated Brillouin scattering light beam propagating through the optical fiber resonator in a second direction, wherein the first direction is opposite to the second direction; mixing the multiple-frequency light beam with the stimulated Brillouin scattering light beam to produce at least one signal representing the frequency difference between the multiple-frequency light beam and the stimulated Brillouin scattering light beam; and determining the rate of rotation based on the frequency difference. - View Dependent Claims (19, 20)
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Specification