On-chip programmable optical crossbar switch
First Claim
1. An integrated circuit comprising:
- an on-chip optical waveguide configured to carry a plurality of optical channels;
a first output selectively coupling a first optical channel througha first optical ring resonator,an intermediate waveguide, anda second optical ring resonator to the on-chip optical waveguide, the intermediate waveguide being disposed between the first optical ring resonator and the second optical ring resonator;
a second output;
a third optical ring resonator selectively coupling a second optical channel from the on-chip optical waveguide to the second output; and
an optical pump source optically coupled to the intermediate waveguide.
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Accused Products
Abstract
An integrated circuit has an optical waveguide configured to carry a plurality of optical channels, which in a particular embodiment are optical clock signals generated by an optical clock generator. The integrated circuit includes an optical crossbar having a first output, a second output, a first optical ring resonator, and a second optical ring resonator. In a further embodiment, the optical crossbar is an optical crossbar switch and an output path in the optical crossbar switch includes another tunable optical ring resonator and an intermediate waveguide, which allows isolating the output from any optical channel on the on-chip optical waveguide by tuning the first ring resonator to a first wavelength, and tuning the other ring resonator to another wavelength.
48 Citations
18 Claims
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1. An integrated circuit comprising:
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an on-chip optical waveguide configured to carry a plurality of optical channels; a first output selectively coupling a first optical channel through a first optical ring resonator, an intermediate waveguide, and a second optical ring resonator to the on-chip optical waveguide, the intermediate waveguide being disposed between the first optical ring resonator and the second optical ring resonator; a second output; a third optical ring resonator selectively coupling a second optical channel from the on-chip optical waveguide to the second output; and an optical pump source optically coupled to the intermediate waveguide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of routing optical channels through an optical crossbar switch comprising:
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providing a plurality of optical signals on a plurality of optical channels to an on-chip optical waveguide; applying a first free carrier tuning signal to a first optical ring resonator so as to couple a first optical signal of the plurality of optical signals to a first output port of an optical crossbar switch; applying a second tuning signal to a second optical ring resonator so as to couple a second optical signal of the plurality of optical signals to a second output port of the optical crossbar switch; and injecting light into a waveguide coupled to at least one of the first and second optical ring resonators. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification