Optical waveguides – Polarization without modulation
Reexamination Certificate
2007-09-13
2009-10-27
Font, Frank G (Department: 2883)
Optical waveguides
Polarization without modulation
C385S039000, C385S129000
Reexamination Certificate
active
07609915
ABSTRACT:
The present invention provides an apparatus for a one-way waveguide and/or a circular polarizer that includes a waveguide having a height, a width, a length and a wave propagation direction. A first wall of the waveguide has a first slanted groove. A second wall opposite the first wall of the waveguide has a second slanted groove. The first and second grooves are rotated clockwise around the wave propagation direction to approximate a helical groove. The present invention may also include a third slanted groove in a third wall adjacent to the first wall and second wall, a fourth slanted groove in a fourth wall opposite the third wall, and the first, second, third and fourth grooves are rotated clockwise around the wave propagation direction to approximate the helical groove.
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Font Frank G
Mooney Michael P
Schwabe Williamson & Wyatt P.C.
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