Depolarized fiber optic rotation sensor with low faraday effect

Details Depolarized fiber optic rotation sensor with low faraday effect Depolarized fiber optic rotation sensor with low faraday effect

1994-07-27

1997-01-28

Ullah, Akm E.

Optical waveguides

Optical waveguide sensor

25022719, 25022727, 356350, G02B 600

Patent

active

055984894

ABSTRACT:
A fiber optic sensing coil formed in a polarization-maintaining optical fiber has two optical fiber leads extending therefrom. A multifunction integrated optics chip linearly polarizes optical signals input to the sensing coil. Fiber optic leads formed of polarization-maintaining optical fiber extend from the multifunction integrated optics chip. The fiber optic multifunction integrated optics chip leads are arranged such that the linear polarization of optical signals output from the multifunction integrated optics chip is directed along one of the principal axes of birefringence of each of the fiber optic multifunction integrated optics chip leads. Splices are formed between corresponding the first sensing coil leads and the multifunction integrated optics chip leads. The sensing coil leads and the multifunction integrated optics chip leads are arranged such that their corresponding principal axes of birefringence are at angles of approximately 45.degree. relative to one another. The first splice is formed a distance from the multifunction integrated optics chip such that a selected phase change between polarization components occurs in optical waves that propagate the distance L.sub.1 in the first multifunction integrated optics chip lead.

REFERENCES:
patent: 4255018 (1981-03-01), Ulrich et al.
patent: 5051577 (1991-09-01), Lutz et al.
patent: 5063290 (1991-11-01), Kersey
patent: 5115480 (1992-05-01), Large
patent: 5208652 (1993-05-01), Sonobe et al.
patent: 5270538 (1993-12-01), Vali et al.
patent: 5327214 (1994-07-01), Asami
patent: 5355216 (1994-10-01), Kim et al.
K. Hotate et al., "Drift of an Optical Fiber Gyro Caused by the Faraday Effect: Influence of the Earth's Magnetic Field", Applied Optics, 25 (1986) 1086-1092.

Affiliated with

Also associated with

Rating

Depolarized fiber optic rotation sensor with low faraday effect does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Depolarized fiber optic rotation sensor with low faraday effect , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Depolarized fiber optic rotation sensor with low faraday effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-946459