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US 12,461,401 B2Granted
Optical device and optical system
AssigneeTDK Corporation
InventorsTetsuya Shibata, Hideaki Fukuzawa, Takashi Kikukawa, Tomohito Mizuno
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Abstract
An optical device that includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a substrate; and a waveguide is provided, wherein the waveguide and the magnetic element are located on or above the substrate, and wherein at least some of light propagating in the waveguide is applied to the magnetic element.
Claims10
An optical device comprising:
- at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer;
- a control circuit;
- a substrate;
- and
- a waveguide,
- wherein the waveguide and the magnetic element are located on or above the substrate,
- at least some of light propagating in the waveguide is applied to the magnetic element, and
- the magnetic element is a magnetic tunnel junction element,
- the magnetic tunnel junction element outputs a voltage or a current in accordance with an intensity of the light applied thereto, and
- the control circuit receives an electric signal from the magnetic tunnel junction element, and outputs an output signal to another circuit, based on the electric signal.
7 more elements
Dependencies are inferred from the claim text.