Optical waveguides – With optical coupler – Switch
Patent
1996-01-18
1997-05-06
Ngo, John
Optical waveguides
With optical coupler
Switch
385 22, 385 23, 359280, G02B 626
Patent
active
056279248
ABSTRACT:
A novel non-mechanical optical fiber switch contains a magneto-optic element and a tubular magnet. The magneto-optic element is disposed within the field of the magnet but outside of the magnet bore. The beam of radiation from the switch input to the switch output passes through the axial bore of the magnet. The magnet contains magnetically anisotropic material, preferably a deformation-aged alloy having Fe, Cr and Co as major constituents. The switch is advantageously used in optical fiber communication systems.
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patent: 4812767 (1989-03-01), Taketomi
patent: 5408548 (1995-04-01), Olmstead
patent: 5512193 (1996-04-01), Shirai et al.
patent: 5521741 (1996-05-01), Umezawa et al.
"Optical Fiber Switch Driven by PXT Bimorph", by Y. Ohmori et al., Applied Optics, vol. 17, No. 22, p. 3531 (1987).
"Magnetooptical 2.times.2 Switch For Single-Mode Fibers", by M. Shirasaki et al., Applied Optics, vol. 23, No. 19, pp. 3271-3276; Oct. 1, 1984.
"Deformation-Induced Anisotropic C.sub.r -C.sub.o -F.sub.e Permanent Magnet Alloys", by S. Jin, IEEE Transactions on Magnetics, vol. MAG-15, No. 6, Nov. 1979, pp. 1748-1750.
Jin Sung-ho
Royer James J.
Tiefel Thomas H.
Lucent Technologies - Inc.
Ngo John
Pacher Eugen E.
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