Compact optical device for wavelength division multiplexing (wdm) applications
AssigneeMellanox Technologies, Ltd.
InventorsAlon GABBAY, Liron GANTZ
Life of this patent
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Abstract
An example optical device is disclosed, comprising a first optical waveguide and a second optical waveguide situated in proximity to the first optical waveguide. The first optical waveguide includes a first grating structure, while the second optical waveguide incorporates a second grating structure. The grating structures facilitate selective, directional coupling of specific wavelengths from the first waveguide to the second waveguide. The distance between the first and second optical waveguides varies along the interaction length so as to optimize the coupling efficiency and the extinction ratio (ER) of the device.
Claims20
An optical device, comprising:
- a first optical waveguide comprising a first grating structure;
- and
- a second optical waveguide comprising a second grating structure, wherein the second optical waveguide is disposed proximate the first optical waveguide to enable optical coupling between the first optical waveguide and the second optical waveguide along an interaction length,
- wherein a distance between the first optical waveguide and the second optical waveguide varies along the interaction length.
A method for demultiplexing an optical signal using an optical device, the method comprising:
- receiving an optical signal for propagation via a first optical waveguide, wherein the optical signal comprises a plurality of wavelengths;
- coupling a subset of the plurality of wavelengths of the optical signal from the first optical waveguide to a second optical waveguide for propagation;
- and
- transmitting, via the second optical waveguide, the subset of the plurality of wavelengths of the optical signal to an external device,
- wherein a distance between the first optical waveguide and the second optical waveguide varies along an interaction length associated with the first optical waveguide and the second optical waveguide.
A system comprising:
- an optical signal generator configured to generate an optical signal, wherein the optical signal comprises a plurality of wavelengths;
- and
- an optical device operatively coupled to the optical signal generator and configured to:
- receive the optical signal via a first optical waveguide;
- couple a subset of the plurality of wavelengths of the optical signal from the first optical waveguide to a second optical waveguide for propagation;
- and
- transmit, via the second optical waveguide, the subset of the plurality of wavelengths of the optical signal to an external device,
- wherein a distance between the first optical waveguide and the second optical waveguide varies along an interaction length associated with the first optical waveguide and the second optical waveguide.
Dependencies are inferred from the claim text.