Littrow grating based OADM
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United States of America Patent
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Apr 10, 2007
Grant Date -
May 15, 2003
app pub date -
Sep 30, 2002
filing date -
Sep 28, 2001
priority date (Note) -
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Abstract
A multi-channel optical switching system particularly usable as a programmable optical add/drop multiplexer in a multi-wavelength communication system. The switching system uses a grating operating at Littrow that separates a multi-channel optical signal into a plurality of optical channels, and combines a plurality of optical channels into a multi-channel optical signal. The system also uses a plurality of optical ports optically coupled to the grating and a selecting device to select which optical channel is directed to which of the optical ports.
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