Magneto-optical modulator for superconducting digital interface
AssigneeUniversity of Rochester
InventorRoman Sobolewski
Life of this patent
Estimating the term…
Abstract
A magneto-optic modulator modulates signals from a superconducting circuit such as a single-flux-quantum (SFQ) logic system onto a carrier wave light beam. The modulator is formed by depositing a magneto-optic material such as EuSe onto a superconducting ground plane such as that of the circuit. A microwave microstrip line is formed on the magneto-optic material and carries a signal from the circuit. The signal induces an H field in the magneto-optic material which causes the magneto-optic material to modulate the light.
Claims8
A magneto-optic modulator for modulating light, the modulator comprising:
- a superconducting ground plane;
- a magneto-optic material on the superconducting ground plane;
- a microwave microstrip line on a side of the magneto-optic material opposite the superconducting ground plane;
- a first light coupler for coupling carrier wave light into the magneto-optic material;
- and
- a second light coupler for coupling the carrier wave light out of the magneto-optic material.
A superconducting hybrid circuit comprising:
- a superconducting ground plane;
- superconducting circuitry on the superconducting ground plane, the superconducting circuitry having a signal output;
- a magneto-optic material on the superconducting ground plane;
- a microwave microstrip line on a side of the magneto-optic material opposite the superconducting ground plane;
- a signal line for carrying a signal from the signal output to the microwave microstrip line;
- a first light coupler for coupling carrier wave light into the magneto-optic material;
- and
- a second light coupler for coupling the carrier wave light out of the magneto-optic material.
Dependencies are inferred from the claim text.