Optical switching device with reconfigurable channel spacing

Details Optical switching device with reconfigurable channel spacing Optical switching device with reconfigurable channel spacing

2011-04-19

2011-04-19

Stahl, Mike (Department: 2874)

Liquid crystal cells, elements and systems

Liquid crystal optical element

Beam dividing switch formed from liquid crystal cell

C385S016000, C385S022000, C359S303000

Reexamination Certificate

active

07929108

ABSTRACT:
An optical switching device includes an array of liquid crystal macropixels, wherein each macropixel includes at least two liquid crystal subpixels. The subpixels may be controlled together to act as a single polarizing pixel, or independently to act as multiple polarizing pixels. When the switching device processes a WDM having a wide channel spacing, the subpixels are controlled together, and when the switching device processes a WDM having a narrow channel spacing, each subpixel is controlled independently.

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patent: 2004/0036834 (2004-02-01), Ohnishi et al.
patent: 2008/0181559 (2008-07-01), Corem et al.

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