Optical switching devices
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United States of America Patent
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Feb 28, 2006
Grant Date -
Feb 19, 2004
app pub date -
Oct 4, 2001
filing date -
Oct 5, 2000
priority date (Note) -
Expired
status (Latency Note)
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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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