Optical add/drop multiplexer including reconfigurable filters and system including the same
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United States of America Patent
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Oct 8, 2013
Grant Date -
Jan 14, 2010
app pub date -
Jul 9, 2008
filing date -
Jul 9, 2008
priority date (Note) -
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Abstract
An optical add/drop multiplexer (OADM) and system incorporating the same for maintaining loading of WDM channels with loading signals or information signals when signals are added or dropped. The OADM may include reconfigurable band pass filters having a transmittance characteristic controllable using a command signal. Selective filtering of loading signals and/or information signals received from branch and trunk paths allows an output WDM signal including information signals on utilized channels and loading signals on all unutilized channels.
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