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US 2002/0176087 A1Published application
Laser gyroscope having a circular waveguide with an asymmetrically tapered region
AssigneeCanon Kabushiki Kaisha
InventorTAKAHIRO NUMAI
Life of this patent
Estimating the term…
Abstract
A gyro comprising a laser device for generating laser beams to be propagated circuitally in opposite directions, wherein an electric signal is taken out from the laser device, the oscillation frequencies of the laser beams being different from each other when the laser device is held stationary.
Claims82
A gyro comprising:
- a laser device for generating laser beams to be propagated circuitally in opposite directions, wherein an electric signal is taken out from said laser device;
- the oscillation frequencies of the laser beams being different from each other when said laser device is held stationary.
A gyro comprising:
- a laser device having an optical waveguide including an asymmetrically tapered region arranged at least in part thereof, wherein an electric signal is taken out from said laser device.
A gyro comprising:
- a laser device for generating laser beams to be propagated circuitally in opposite directions;
- and
- an electric signal detection means for taking out an electric signal from said laser device;
- the oscillation frequencies of said laser beams being different from each other when said laser device is held stationary.
1 more element
A gyro comprising:
- a laser device;
- and
- a beat signal detection means;
- said laser device having an optical waveguide including an asymmetrical tapered region arranged at least in part thereof.
1 more element
A gyro comprising:
- a laser device for generating first and second laser beams;
- and
- an optical detector for detecting the interfered light generated by interference of said first and second laser beams;
- the oscillation frequencies of said first and second laser beams being different from each other when said laser device is held stationary.
1 more element
A laser device comprising:
- an optical waveguide including an asymmetrically tapered region projecting to the outside;
- said tapered region including a first tapered region gradually broadening the optical waveguide along the direction of laser beam propagation and a second tapered region gradually narrowing the optical waveguide along the direction of laser beam propagation;
- the angles defined respectively by said first and second tapered regions and the region of the optical waveguides showing a constant width may be acute.
Dependencies are inferred from the claim text.