Scalable multi-band wdm optical compute interconnect architectures
AssigneeIntel Corporation
InventorsWenhua Lin, Christian Malouin, Ling Liao, Saeed Fathololoumi, Thang Hoang
Life of this patent
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Abstract
Scalable multi-band wavelength division multiplexing (WDM) transceiver architectures suitable for high-bandwidth optical Compute interconnects (OCI) between computing resources. The WDM wavelength range is divided into two or more color/wavelength bands. Each band of WDM optical signals may be coupled through separate semiconductor optical amplifiers (SOAs) that are tuned to the different bands. The bands may be conveyed through an optical MUX/DeMUX for transmission through an optical fiber. The optical MUX/DeMUX may comprise a band MUX/DeMUX or a polarization MUX/DeMUX.
Claims20
An apparatus, comprising:
- a first plurality of optical modulators coupled to a first optical waveguide to generate a first plurality of intensity modulated wavelength division multiplexed (WDM) optical signals spanning a first band comprising two or more channel wavelengths;
- a second plurality of optical modulators coupled to a second optical waveguide to generate a second plurality of intensity modulated WDM optical signals spanning a second band of two or more channel wavelengths, longer than those of the first band;
- an optical multiplexer, comprising a first input port coupled to the first optical waveguide and a second input port coupled to the second optical waveguide;
- a first semiconductor optical amplifier (SOA) coupled to the first optical waveguide between the multiplexer and the first plurality of modulators, the first SOA having a first center wavelength;
- and
- a second semiconductor optical amplifier (SOA) coupled to the second optical waveguide between the multiplexer and the second plurality of modulators, the second SOA having a second center wavelength, different than the first center wavelength.
A photonic integrated circuit (PIC), comprising:
- a wave division multiplexing (WDM) receiver circuit;
- and
- a multi-band WDM transmitter circuit, further comprising:
- a first planar optical waveguide to convey a first plurality of intensity modulated optical signals spanning a first band of channel wavelengths to an output optical multiplexer through a first semiconductor optical amplifier (SOA) having a first photoluminescence (PL) band;
- and
- a second planar optical waveguide to convey a second plurality of intensity modulated optical signals spanning a second band of channel wavelengths to the output optical multiplexer through a second SOA having a second PL band.
A system, comprising:
- a first compute unit;
- a second compute unit;
- and
- an optical compute interconnect (OCI) coupling the first compute unit to the second compute unit through optical fibers, wherein the OCI comprises:
- a wave division multiplexing (WDM) receiver circuit;
- and
- a multi-band WDM transmitter circuit comprising an optical multiplexer coupled to a first planar optical waveguide to receive a first plurality of intensity modulated optical signals spanning a first band of channel wavelengths amplified by a first semiconductor optical amplifier (SOA) having a first center wavelength, and coupled to second planar optical waveguide to receive a second plurality of intensity modulated optical signals spanning a second band of channel wavelengths amplified by a second SOA having a second center wavelength.
Dependencies are inferred from the claim text.