Optical waveguides – With optical coupler – Particular coupling function
Patent
1997-07-23
1999-09-07
Bovernick, Rodney
Optical waveguides
With optical coupler
Particular coupling function
356350, 372 6, G02B 530
Patent
active
059499303
ABSTRACT:
A fiber optic rotation sensor system having improved scale factor stability includes an optically pumped gain fiber arranged to provide optical signals to an integrated optics chip connected to a fiber optic sensing coil. An optical coupler receives optical signals from the gain fiber and provides the optical signals to an optical fiber. The optical fiber is arranged to guide optical signals from the optical coupler along an optical path toward the integrated optics chip such that optical signals from the gain fiber are input to the fiber optic sensing coil to form counter-propagating waves therein. The counter-propagating waves traverse the sensing coil and then combine in the integrated optics chip to form a gyro output signal. A depolarizer is placed in the optical path between the first optical coupler and the integrated optics chip to prevent random changes in the state of polarization of optical signals propagating between the gain fiber and the integrated optic chip.
REFERENCES:
patent: 4556279 (1985-12-01), Shaw et al.
patent: 4671658 (1987-06-01), Shaw et al.
patent: 4997282 (1991-03-01), Pavlath
patent: 5037205 (1991-08-01), Pavlath
patent: 5046808 (1991-09-01), Chang
patent: 5108183 (1992-04-01), Fling et al.
patent: 5231465 (1993-07-01), Huang et al.
patent: 5260768 (1993-11-01), Cordova et al.
patent: 5335064 (1994-08-01), Nishiura et al.
patent: 5486916 (1996-01-01), Michal et al.
Cordova Amado
Goldner Eric Lee
Steele James R.
Bovernick Rodney
Kang Ellen E.
Litton Systems Inc.
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