Optical multi-demultiplexer

Details Optical multi-demultiplexer Optical multi-demultiplexer

2005-05-24

2005-05-24

Stcyr, Daniel (Department: 2876)

Optical waveguides

With optical coupler

Input/output coupler

C385S024000, C385S043000

Reexamination Certificate

active

06898349

ABSTRACT:
An optical multi-demultiplexer of the present invention comprises an input waveguide to which wavelength division multiple signals are applied, a plurality of output waveguides for demultiplexing and outputting the wavelength division multiple signals, an arrayed waveguide including a plurality of channel waveguides having different waveguide lengths, an input slab waveguide, and an output slab waveguide. The input slab waveguide is provided between the input waveguide and the arrayed waveguide. The output slab waveguide is provided between the arrayed waveguide and the output waveguides. The input slab waveguide is formed with tapered island regions having a refractive index lower than that of the core layer of the slab waveguide. The island regions are situated in positions opposite the channel waveguides of the arrayed waveguide.

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