Coded data generation or conversion – Digital pattern reading type converter – Optical
Reexamination Certificate
2007-06-19
2007-06-19
Jeanglaude, Jean Bruner (Department: 2819)
Coded data generation or conversion
Digital pattern reading type converter
Optical
C341S155000, C341S137000
Reexamination Certificate
active
10949030
ABSTRACT:
A microwave frequency deflection cell analog to digital converter is provided. The phase velocity of an optical wave is effectively reduced to that of a microwave frequency electro-magnetic signal in an optical deflector. The electro-optic effect is used for a controlled deflection of an optical beam. The angle of beam deflection varies in accordance with an applied voltage, which may be a signal in the microwave frequency range. A device of the invention includes a birefringent crystal having transmission line conductors arranged to create an electric field in the crystal in response to an applied voltage, and mirrors arranged to create a multi-bounce path through the crystal for a light beam directed into the crystal on an entrance path that is non parallel to the mirrors. The multi-bounce path effectively slows the velocity of the optical wave to that of the voltage wave, permitting deflection or modulation of the beam by microwave frequency electrical signals.
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Gahl John
Nunnally William
Renkoski Timothy
Greer Burns & Crain Ltd.
Jeanglaude Jean Bruner
The Curators of the University of Missouri
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