Multiport photonic device with asymmetric waveguides
AssigneeAurrion, Inc.
InventorJonathan Edgar Roth
Life of this patent
Estimating the term…
Abstract
Embodiments describe optical devices including a first waveguide, comprising a first cross-sectional area, to receive a light comprising a first optical mode, and a second waveguide, adjacent to the first waveguide, to receive a light comprising a second optical mode orthogonal to the first optical mode. The second waveguide comprises a second cross-sectional area different than the first waveguide such that an absorption/gain coefficient of the second waveguide for light comprising the second optical mode is equal to an absorption/gain coefficient of the first waveguide for light comprising the first optical mode. The optical devices may comprise modulators, photodetectors, or semiconductor optical amplifiers (SOAs).
Claims22
An apparatus comprising:
- a first waveguide, comprising a first cross-sectional area, to receive a light produced from a first polarization state and propagate a first optical mode;
- a second waveguide, adjacent to the first waveguide, to receive a light produced from a second polarization state, orthogonal to the first polarization state, and propagate a second optical mode, wherein the second waveguide comprises a second cross-sectional area different than the first waveguide;
- and
- a region, disposed over the first and second waveguides, to absorb or amplify light from the first and second waveguides, wherein the region comprises at least one of an absorption region, a gain region, a phase shift region, or a variable refractive index overlap region;
- wherein an absorption, gain, or modal coefficient for light comprising the second optical mode is equal to an absorption, gain, phase, or modal coefficient for light comprising the first optical mode.
A system comprising:
- an optical fiber to receive light;
- a polarization splitter to receive light from the optical fiber and to split and convert the light from light comprising a first polarization state in the fiber to light in a first waveguide-confined spatial mode and from light comprising a second polarization state orthogonal to the first polarization state in the fiber to light in a second waveguide-confined spatial mode comprising the same polarization state as light in the first waveguide-confined spatial mode;
- and
- an optical device comprising:
- a first waveguide, comprising a first cross-sectional area, to receive the light comprising the first waveguide-confined spatial mode;
- a second waveguide, adjacent to the first waveguide, to receive the light comprising the second waveguide-confined spatial mode, wherein the second waveguide comprises a second cross-sectional area different than the first waveguide such that an absorption/gain coefficient for light comprising the second spatial mode is equal to an absorption/gain coefficient for light comprising the first spatial mode;
- and
- an absorption/gain region, disposed over the first and second waveguides, to absorb/amplify light from the first and the second waveguides.
An apparatus comprising:
- a first and a second optical coupler disposed on a same side of the apparatus;
- a first waveguide to receive, from the first optical coupler, a light produced from a first polarization state and propagate a first optical mode;
- a second waveguide, adjacent to the first waveguide, to receive, from the second optical coupler, a light produced from a second polarization state, orthogonal to the first polarization state, and propagate a second optical mode;
- and
- a region, disposed over the first and second waveguides, to absorb or amplify light from the first and the second waveguides wherein the region comprises at least one of an absorption region, a gain region, a phase shift region, or a variable refractive index overlap region;
- wherein the second waveguide comprises a second cross-sectional area different than the first waveguide such that an absorption, gain, phase, or modal coefficient for light comprising the second optical mode is equal to an absorption, gain, phase, or modal coefficient for light comprising the first optical mode.
Dependencies are inferred from the claim text.