Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-02-06
2007-02-06
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S031000, C385S046000
Reexamination Certificate
active
11231094
ABSTRACT:
An arrayed waveguide grating (AWG) device comprising a substrate having a first array of waveguides optically coupled between first and second slab couplers and a second array of input-output waveguides optically coupled at first ends thereof to an input/output side of the second slab-coupler. The input/output waveguide are tapered at first end portions thereof so as to increase in width towards the second slap coupler, and the width (W) of the first ends of the input/output waveguides varies across the second array in a manner so as to increase uniformity of at least on performance parameter, for example adjacent crosstalk (AXT). In the described embodiment, the width (W) of the tapered waveguide ends increases from one side to the array of input/output waveguides to the other, so as to keep the separation(s) between the input/output waveguides.
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Bulthuis Hindrik Freerk
Ian Laming Richard
Van Weerden Harm
Dupuis Derek L.
Font Frank G.
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