Double pass arrangement for a liquid crystal device

Details Double pass arrangement for a liquid crystal device Double pass arrangement for a liquid crystal device

2005-02-22

2005-02-22

Lee, John R. (Department: 2881)

Optical waveguides

With optical coupler

Switch

C385S024000, C385S020000, C385S034000, C385S036000, C359S199200, C359S199200, C359S246000, C359S247000, C359S301000, C359S302000, C349S193000, C349S196000, C349S197000

Reexamination Certificate

active

06859573

ABSTRACT:
An optical device for rerouting and modifying an optical signal that uses a double pass through a liquid crystal modulator is disclosed. The optical device includes a first polarizer for providing polarized light, a liquid crystal modulator for selectively modifying the polarized light, a second polarizer for analyzing the light passed through the liquid crystal modulator, and a reflector for reflecting the analyzed light back through the second polarizer, the liquid crystal modulator, and the first polarizer. This arrangement provides a double pass through the liquid crystal modulator, thus significantly improving the attainable extinction ratio.

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