Optical switching devices

Details Optical switching devices Optical switching devices

2006-02-28

2006-02-28

Juba, Jr., John (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C359S034000, C359S900000

Reexamination Certificate

active

07006266

ABSTRACT:
The invention provides an optical switcing device, including a substrate having at least one polarization-selective multiplexing grating; at least one polarization-selective demultiplexing grating, and a polarization rotation element acting as a dynamic ½ λ plate, optically interposed between the optical path of said multiplexing grating and said demultiplexing grating. The invention also provides a method for producing an holographic plate having a plurality of holographic elements.

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patent: 5486934 (1996-01-01), Huang
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