Optical multi-channel separating filter with electrically adjustable photon crystals
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United States of America Patent
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May 16, 2000
Grant Date -
N/A
app pub date -
Dec 24, 1998
filing date -
Mar 5, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An optical multipath switch with electrically switchable photonic crystals. The invention involves the construction of optical multipath switches based on electrically switchable photonic crystals. A filled photonic crystal, switchable electrically and/or by light, is used as a tunable mirror. By creating selective optical deformations in the photonic crystal, its properties can be influenced in selected areas in terms of transmission capability. This is done preferably by application of a strong electrical field. Light is coupled in and out via fixed photonic mirrors located at an angle to the photonic crystal. The optical switches of the invention find application in switching networks and serve the purpose of service selection. A very high packing density may be achieved.
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