Method and apparatus for radiant energy modulation in...

Details Method and apparatus for radiant energy modulation in... Method and apparatus for radiant energy modulation in...

G - Physics

02

F

88/97

G02F 1/11 (2006.01)

Patent

CA 1158899

ABSTRACT Radiant energy is caused to modulate in phase and frequency in a single mode optical fiber by means of a relatively movable, spatially perio- dic perturbation. Specifically, an optical grating is mounted on the clad- ding at a control zone near the core of the fiber. The control zone may be formed by removing a portion of the cladding to form a reduced thickness cladding portion. The grating has its crests oriented generally normal to the optic axis of the optical fiber and the grating is caused to move rela- tive to the optic axis, for example by sliding along the optical fiber. A shear mode piezoelectric transducer may be used to cause the necessary movement.

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