Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-06-20
2006-06-20
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S031000, C385S039000, C385S046000, C385S050000
Reexamination Certificate
active
07065273
ABSTRACT:
A flat-top arrayed waveguide grating with wideband transmission spectrum may be produced by integrating a series of directional couplers to the output slab waveguide coupler of a dual channel-spacing arrayed waveguide grating having Gaussian spectral profile. The primary channel spacing of the Gaussian arrayed waveguide grating determines the spectral width of the resultant wideband device, whereas the secondary channel spacing determines the wavelength separation between the adjacent output channels. In such a structure, a wideband or flat transmission spectral profile may be achieved without excessive losses.
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Bhowmik Achintya K.
Sur Biswajit
Font Frank G.
Lepisto Ryan
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