Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Patent
1996-11-04
1998-11-24
Sanghavi, Hemang
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
385140, 385 60, 385 72, G02B 600
Patent
active
058419152
ABSTRACT:
An apparatus is provided for causing a change in the physical condition of an optical fiber in order to analyze the effects of modal noise on a communication system in which the optical fiber is used. One method for performing the physical change is to flex the fiber in a flexing station that comprises two clamps that are attached to generally opposite sides of a multiple turn loop of optical fiber that is twisted to form a figure-eight pattern. The two clamps are moved away from each other and toward each other to flex the optical fiber by twisting, compressing and expanding it. A second means for changing the condition of the optical fiber is to provide an optical attenuation block that is designed to hold opposite termini of the optical fiber at a discontinuity formed therein. Two halves of the block are configured to be movable relative to each other in response to threaded members passing through selective portions of the block. Ferrules are attached with connectors, to the opposite termini that define the discontinuity and the ferrules are each attached to one portion of the block. By moving the halves of the block relative to each other, selective misalignments can be induced in the ferrule arrangement. In particular a combination of longitudinal, lateral and angular misalignment can be achieved.
REFERENCES:
patent: 4645294 (1987-02-01), Oguey et al.
patent: 5359447 (1994-10-01), Hahn et al.
patent: 5384885 (1995-01-01), Diner
patent: 5742725 (1998-04-01), Longobardi et al.
Article by Koonen entitled "Bit-Error-Rate Degradation in a Multimode Fiber Optic Transmission Link Due to Modal Noise", IEEE, vol. SAC-4, No. 9, Dec. 1986.
An Article by Epworth in "The proceedings of the 4th European Conference on Optical Communications" 1978 pp. 492-501.
Rabinovich Simon M.
Smith David F.
Honeywell Inc.
Lanyi William D.
Norris Roland W.
Sanghavi Hemang
LandOfFree
Apparatus for determining the effect of modal noise on a communi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for determining the effect of modal noise on a communi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining the effect of modal noise on a communi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1712309