Wavelength demultiplexer
AssigneeIntel Corporation
InventorsWenhua Lin, Judson Douglas Ryckman, Ling Liao, Kelly Christopher Magruder, Harel Frish, Assia Barkai, Han-din Liu, Yimin Kang
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Abstract
There is disclosed in one example a fiberoptic communication circuit for wavelength division multiplexing (WDM) communication, including: an incoming waveguide to receive an incoming WDM laser pulse; an intermediate slab including a demultiplexer circuit to isolate n discrete modes from the incoming WDM laser pulse; n outgoing waveguides to receive the n discrete modes, the outgoing waveguides including fully-etched rib-to-channel waveguides; and an array of n photodetectors to detect the n discrete modes.
Claims20
A fiberoptic communication circuit for wavelength division multiplexing (WDM) communication, comprising:
- an incoming waveguide to receive an incoming WDM laser pulse;
- an intermediate slab comprising a demultiplexer circuit to isolate n discrete modes from the incoming WDM laser pulse;
- n outgoing waveguides to receive the n discrete modes, the outgoing waveguides comprising fully-etched rib-to-channel waveguides;
- and
- an array of n photodetectors to detect the n discrete modes.
An integrated circuit to provide (WDM) communication for a system-on-a-chip, comprising:
- an input-side waveguide to receive a multiplexed laser pulse;
- a demultiplexer circuit configured to isolate n discrete carrier wavelengths from the multiplexed laser pulse;
- and
- n output-side waveguides to direct the n discrete carrier wavelengths to n photodetectors, the outgoing waveguides comprising fully-etched channel waveguides;
- wherein at least one of the input-side waveguide or the output-side waveguides comprise one or more rib-to-channel converters.
A method of manufacturing a demultiplexer having at least one rib-to-channel converter, comprising:
- etching channel waveguides into a semiconductor substrate;
- filling the channel waveguides with a cladding film;
- planarizing;
- etching rib waveguides into the substrate along trenches of the channels;
- filling rib trenches with cladding film;
- and
- planarizing.
Dependencies are inferred from the claim text.