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US 12,711,367 B2Granted
Microring resonator-based optical device with improved linearity
AssigneeHewlett Packard Enterprise Development LP
InventorsYiwei Peng, Yuan Yuan, Stanley Cheung, Wayne Victor Sorin, Marco Fiorentino
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Abstract
An example microring resonator (MRR) based optical device having improved linearity is presented. The optical device includes a first MRR and a first bus waveguide optically coupled to the first MRR. Further, the optical device includes a second MRR optically coupled to the first MRR, and a second bus waveguide optically coupled to the second MRR. The first MRR and the second MRR are formed between the first bus waveguide and the second bus waveguide. The optical coupling between the first MRR and the second MRR increases the linearity in the optical output of the optical device.
Claims15
An optical device comprising:
- a first microring resonator (MRR);
- a first bus waveguide optically coupled to the first MRR;
- a second MRR optically coupled to the first MRR;
- a second bus waveguide optically coupled to the second MRR, wherein the first MRR and the second MRR are formed between the first bus waveguide and the second bus waveguide;
- and
- an optical distributor coupled to the first bus waveguide and the second bus waveguide and comprising two input ports and two output ports, wherein the optical distributor receives an input light through one of the two input ports, generates a first light stream and a second light stream from the input light, and feeds the first light stream to the first bus waveguide via a first output port of the two output ports and the second light stream to the second bus waveguide via a second output port of the two output ports,
- wherein the first MRR and the second MRR are designed to have equal diameters, thicknesses, and widths so that the first MRR and the second MRR have the same resonant wavelength, causing a superlinear transmission region of the second MRR to align with a resonant wavelength of the first MRR.
4 more elements
A coherent optical neural network (ONN) system, comprising:
- a first optical device;
- and
- a second optical device optically coupled to the first optical device,
- wherein each of the first optical device and the second optical device comprises:
- a first microring resonator (MRR);
- a first bus waveguide optically coupled to the first MRR and comprising a first output port;
- a second MRR optically coupled to the first MRR;
- a second bus waveguide optically coupled to the second MRR and comprising a second output port, wherein the first MRR and the second MRR are formed between the first bus waveguide and the second bus waveguide;
- and
- an optical distributor coupled to the first bus waveguide and the second bus waveguide and comprising two input ports and two output ports, wherein the optical distributor receives an input light through one of the two input ports, generates a first light stream and a second light stream from the input light, and feeds the first light stream to the first bus waveguide via a first output port of the two output ports and the second light stream to the second bus waveguide via a second output port of the two output ports,
- wherein an input port of the two input ports of the optical distributor of second optical device is connected to one of the first output port and the second output port of a first optical device to receive an optical output signal of the first optical device;
- wherein the first MRR and the second MRR are designed to have equal diameters, thicknesses, and widths so that the first MRR and the second MRR have the same resonant wavelength, causing a superlinear transmission region of the second MRR to align with a resonant wavelength of the first MRR.
9 more elements
A wavelength division multiplexing (WDM) optical neural network (ONN) system, comprising:
- a first bus waveguide;
- a second bus waveguide;
- and
- an optical distributor coupled to the first bus waveguide and the second bus waveguide and comprising two input ports and two output ports, wherein the optical distributor receives an input light through one of the two input ports, generates a first light stream and a second light stream from the input light, and feeds the first light stream to the first bus waveguide via a first output port of the two output ports and the second light stream to the second bus waveguide via a second output port of the two output ports,
- a plurality of pairs of microring resonators (MRRs) formed between the first bus waveguide and the second bus waveguide along a length of the first bus waveguide and the second bus waveguide, wherein each of the plurality of pairs of MRRs comprises:
- a first microring resonator (MRR) optically coupled to the first bus waveguide;
- and
- a second MRR optically coupled to the second bus waveguide and the first MRR, wherein the first MRR is formed between the first bus waveguide and the second MRR, and the second MRR is formed between the first MRR and the second bus waveguide;
- wherein the first MRR and the second MRR are designed to have equal diameters, thicknesses, and widths so that the first MRR and the second MRR have the same resonant wavelength, causing a superlinear transmission region of the second MRR to align with a resonant wavelength of the first MRR.
6 more elements
Dependencies are inferred from the claim text.