Optical signal modulators

Details Optical signal modulators Optical signal modulators

G - Physics

02

F

325/1, 345/55

G02F 1/03 (2006.01)

Patent

CA 1257923

OPTICAL SIGNAL MODULATORS Abstract of the Disclosure An optical fiber having a core and a cladding has its cladding interrupted and an electro-optic crystal disposed at the interruption, a modulating electric field being applied via electrodes to the crystal to control its refractive index and thereby modulate an optical signal carried by the fiber. In one embodiment the interruption in the cladding extends all around the core. In another embodiment the fiber is embedded in a curved position in epoxy material, and the epoxy material and fiber are ground down on the outside of the curve to interrupt the cladding and expose the core, the electro-optic crystal being provided on the ground surface. A second fiber can be inverted on the crystal to provide an optical coupler. The electro-optic crystal is for example a single crystal of a tetragonal phosphate. - i -

507411

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