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US 8,571,363 B2Granted
Ring resonator with inductance coupled heat tuning
AssigneeHewlett-Packard Development Company, L.P.
InventorsWei Wu, Raymond G. Beausoleil, Shih-Yuan Wang
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Abstract
A ring resonator has a first optical waveguide arranged in a loop, a second optical waveguide tangentially connected to the first optical waveguide, and an electrical coil inductively coupled to the first optical waveguide.
Claims21
A ring resonator, comprising:
- a first optical waveguide arranged in a loop;
- a second optical waveguide tangentially connected to said first optical waveguide;
- and
- an electrical coil, in which the electrical coil is in electromagnetic communication with said first optical waveguide such that an electrical current flowing through the electrical coil induces a corresponding electrical current in the first optical waveguide,
- in which the resonant frequency of the first optical waveguide is selectively altered by altering the electrical current flowing through the electrical coil to create the corresponding electrical current in the first optical waveguide, the corresponding electrical current in the first optical waveguide altering the resistance of the first optical waveguide, the altered resistance of the first optical waveguide altering the operating temperature of the first optical waveguide, the altered operating temperature of the first waveguide altering the resonant frequency of the first optical waveguide.
2 more elements
An optical system, comprising:
- a ring resonator having a first optical waveguide arranged in a loop, a second optical waveguide tangentially connected to said first optical waveguide,
- an electrical coil in electromagnetic communication with said first optical waveguide;
- and
- a controller in electrical communication with said electrical coil;
- in which said controller selectively tunes a resonant frequency of said ring resonator by altering an electrical current flowing through the electrical coil to create a corresponding electrical current in the first optical waveguide,
- in which the corresponding electrical current in the first optical waveguide alters the resistance of the first optical waveguide, the altered resistance of the first optical waveguide altering the operating temperature of the first optical waveguide, the altered operating temperature of the first optical waveguide altering the resonant frequency of the first optical waveguide.
3 more elements
A method of selectively tuning a ring resonator, said method comprising:
- selectively altering a resonant frequency of an optical ring resonator by altering an electrical current flowing through an electrical coil in electromagnetic communication with the optical ring resonator to create a corresponding electrical current in the optical ring resonator,
- in which the corresponding electrical current in the optical ring resonator alters the resistance of the optical ring resonator, the altered resistance of the optical ring resonator altering the operating temperature of the optical ring resonator, the altered operating temperature of the optical ring resonator altering the resonant frequency of the optical ring resonator.
Dependencies are inferred from the claim text.