Efficient non-linear phase shifting using a photonic band gap structure
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United States of America Patent
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Mar 25, 2003
Grant Date -
N/A
app pub date -
Sep 29, 2000
filing date -
Sep 30, 1999
priority date (Note) -
Expired
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Abstract
A device is provided for generating a photonic signal having a phase different from an input photonic signal that is incident on the device. The input photonic signal has an signal frequency, signal bandwidth, and a signal intensity. The device comprises a plurality of material layers. The material layers are arranged such that the device exhibits a photonic band gap structure. The photonic band gap structure exhibits a transmission band edge that corresponds to the input photonic signal frequency. A second photonic signal is generated at a second photonic frequency preferably close to a second band edge. The interaction of the input photonic signal with the second photonic signal generates a phase shift of order .pi. for relatively small input intensities.
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