Double diffraction grating planar lightwave circuit

Details Double diffraction grating planar lightwave circuit Double diffraction grating planar lightwave circuit

2006-06-27

2006-06-27

Healy, Brian (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S129000, C385S130000, C385S014000, C398S084000, C398S087000

Reexamination Certificate

active

07068885

ABSTRACT:
The invention relates to a planar lightwave circuit including a pair of opposed concave reflective diffraction gratings sharing the same focal line, which separates first and second slab waveguide regions. The ends of input and output waveguides are positioned along the focal line for launching and receiving light directed by one or both of the diffraction gratings. The invention enables light within in a certain wavelength range to be launched from an input waveguide, directed by a single diffraction grating, and output waveguides, all within a single slab waveguide region, while light within another wavelength range will be directed from one diffraction grating to another for output waveguides in a different slab waveguide region.

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