Arrayed waveguide grating, optical module provided with said arrayed waveguide grating, and optical communications system
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United States of America Patent
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Aug 25, 2015
Grant Date -
Dec 25, 2014
app pub date -
Dec 28, 2012
filing date -
Jan 13, 2012
priority date (Note) -
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Abstract
An arrayed waveguide grating provided with a first slab waveguide formed on a substrate; a second slab waveguide formed on the substrate; a first input/output waveguide connected to the first slab waveguide; a second input/output waveguide connected to the second slab waveguide; two or more channel waveguide groups connecting the first and second slab waveguides, each of the channel waveguide groups formed of an aggregate of a plurality of channel waveguides having path lengths sequentially becoming longer by a predetermined path length difference; and an optical filter arranged in at least one of the first and second slab waveguides.
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