Diffraction grating

Optical waveguides – With optical coupler – Input/output coupler

Reexamination Certificate

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Details

C385S014000, C385S129000, C385S130000

Reexamination Certificate

active

11032277

ABSTRACT:
Diffraction gratings for coupling an electromagnetic wave into a planar waveguide are disclosed. The diffraction grating may include a first diffraction grating and a second diffraction grating slanted relative to one another. Alternatively, the diffraction grating may include a first diffraction grating and a second diffraction grating spaced apart to form a gap therebetween.

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patent: 2004/0062503 (2004-04-01), Challener

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