1987-09-17
1990-07-31
Sikes, William L.
G02B 602, G02B 616
Patent
active
049445715
ABSTRACT:
Simultaneous time-variable and position-variable control of the polarization properties from any position along the length of an optical fibre, is effected by launching an acoustic disturbance into the fibre, thereby locally modifying the birefringence of the fibre. A current measurement device incorporating a monomode optical fiber 1 may be made insensitive to vibration by launching an acoustic wave from one end of the fiber. This wave 7 consists of two linearly polarized shear waves orthogonal in direction, and in phase quadrature is of such an amplitude and frequency as to provide a circular birefringence very much greater than the vibrationally-induced linear birefringence.
REFERENCES:
Howard et al.; "Interaction of High-Frequency Sound With Fibre-Guided Coherent Light"; Electronics Letters; vol. 14, No. 19; 1978; pp. 620, 621.
Kino et al.; "Acoustic Modulators for Optical Fibres"; Revue Phys. Appl.; vol. 20l 1985; pp. 333-340.
National Research Development Corporation
Sikes William L.
Wise Robert E.
LandOfFree
Optical fibers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical fibers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fibers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1395228