Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-08-22
2006-08-22
Schwartz, Jordan (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S255000, C385S003000
Reexamination Certificate
active
07095543
ABSTRACT:
The invention discloses phase-shifters, modulators, and method that produces a smaller π by means of a field excitation using multiple electrodes. A negative signal is introduced that travels with the positive signal, which enhances the electric field significantly. The field enhancement is provided by the superposition of the fields accumulated from each electrode. A base or substrate material can be made from any compound having linear electro-optic properties, such as lithium niobate, lithium tantalite, potassium lithium niobate, potassium titanyl phosphate or gallium-arsenide. For lithium niobate, there are two possible orientations of electric field, z-cut orientation or x-cut orientation.
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Hill Marc E.
King Jonathan P.
Wu Hui
Choi William
Finisar Corporation
Schwartz Jordan
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