Patent ID: 11971574
Assignee: APPLE INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. A multiplexing device, comprising:
a first input waveguide configured to receive a first wavelength of a single mode of light;
a second input waveguide configured to receive a second wavelength of the single mode of light,
an interferometric waveguide section, comprising:
a first interferometric waveguide connected to the first input waveguide and having a first tapered section and a straight segment; and
a second interferometric waveguide connected to the second input waveguide and having a second tapered section, wherein the second tapered section is optically coupled to the first tapered section; and

an output waveguide connected to the straight section of the first interferometric waveguide, wherein:
the first tapered section and the second tapered section are configured to convert a portion of the single mode of light into a higher order mode for each of the first and second wavelengths; and
the output waveguide is configured to:
convert the higher order mode of light of each of the first and second wavelengths received from the interferometric waveguide to the single mode of output light; and
output a combined light of the first and second wavelengths having the single mode of light.