Tunable filter
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United States of America Patent
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Issued Date -
N/A
app pub date -
Nov 29, 2001
filing date -
Apr 30, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An optical filter is disclosed. The filter includes an array waveguide grating having a plurality of array waveguides. Each array waveguide is configured to receive a portion of an input light signal and output the portions of the light signal such that the portions of the light signal are combined into an output light signal. The filter also includes effective length tuners configured to change an effective length of a plurality of the array waveguides. The effective length tuners are configured to be engaged such that an angle at which the output light signal travels away from the array waveguide grating shifts relative to a reference angle. The reference angle is the angle at which the output light signal travels when the one or more effective length tuners are not engaged.
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