Chromatic dispersion compensation in waveguide arrays
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United States of America Patent
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Apr 19, 2005
Grant Date -
Oct 16, 2003
app pub date -
Apr 14, 2003
filing date -
Apr 15, 2002
priority date (Note) -
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Abstract
A flat-top arrayed waveguide grating with a Hyper-Gaussian distribution function and a modified sinc design exhibits a very low chromatic dispersion, low loss and requires a relatively small number of waveguides. Controlled loss is introduced into certain waveguides of the array by creating gaps (unguided regions) between the waveguides to produce a desired predetermined amplitude distribution. The gaps are preferably arranged in the middle of the array.
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