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US 12,332,114 B2Granted
Receiving device, transceiver device, communication system, portable terminal device, and photodetection element
AssigneeTDK Corporation
InventorsHideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata
Life of this patent
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Abstract
A receiving device includes a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light, and wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element.
Claims22
A receiving device comprising:
- a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer,
- wherein the first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light,
- wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element,
- wherein the intensity of the light applied to the first ferromagnetic layer is converted into the output voltage from the magnetic element corresponding to the intensity,
- wherein the optical signal has intensities of at least two levels, and
- wherein, under a condition that a magnitude of the output voltage from the magnetic element has a first value when the intensity of the light applied to the first ferromagnetic layer is a first intensity and has a second value when the intensity of the light applied to the first ferromagnetic layer is a second intensity and the second intensity is greater than the first intensity,
- current flows from the first ferromagnetic layer to the second ferromagnetic layer when the second value is larger than the first value, and
- current flows from the second ferromagnetic layer to the first ferromagnetic layer when the second value is smaller than the first value.
5 more elements
A photodetection element comprising:
- a first ferromagnetic layer;
- a second ferromagnetic layer;
- and
- a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer,
- wherein the photodetection element is configured to convert an intensity of light applied to the first ferromagnetic layer into an output voltage from the photodetection element corresponding to the intensity,
- wherein an optical signal having intensities of at least two levels is applied, and
- wherein, under a condition that a magnitude of an output voltage has a first value when the intensity of the light applied to the first ferromagnetic layer is a first intensity and has a second value when the intensity of the light applied to the first ferromagnetic layer is a second intensity and the second intensity is greater than the first intensity,
- current flows from the first ferromagnetic layer to the second ferromagnetic layer when the second value is larger than the first value, and
- current flows from the second ferromagnetic layer to the first ferromagnetic layer when the second value is smaller than the first value.
6 more elements
A photodetection element comprising:
- a first ferromagnetic layer;
- a second ferromagnetic layer;
- a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer;
- and
- a hard bias layer configured to apply a bias magnetic field to the first ferromagnetic layer,
- wherein the photodetection element is configured to convert an intensity of light applied to the first ferromagnetic layer into an output voltage from the photodetection element corresponding to the intensity, and
- wherein the hard bias layer is at a position overlapping a laminate including the first ferromagnetic layer, the second ferromagnetic layer and the spacer layer when viewed from a direction orthogonal to a lamination direction of the laminate.
4 more elements
A photodetection element comprising:
- a first ferromagnetic layer;
- a second ferromagnetic layer;
- a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer;
- and
- a soft magnetic material,
- wherein the photodetection element is configured to convert an intensity of light applied to the first ferromagnetic layer into an output voltage from the photodetection element corresponding to the intensity, and
- wherein the soft magnetic material covers at least a part of outer circumference of a laminate including the first ferromagnetic layer, the second ferromagnetic layer and the spacer layer from outside in a plan view from a lamination direction of the laminate.
4 more elements
A photodetection element comprising:
- a first ferromagnetic layer;
- a second ferromagnetic layer;
- a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer;
- and
- an integrated circuit,
- wherein the photodetection element is configured to convert an intensity of light applied to the first ferromagnetic layer into an output voltage from the photodetection element corresponding to the intensity,
- wherein the integrated circuit and a laminate including the first ferromagnetic layer, the second ferromagnetic layer and the spacer layer are formed on the same substrate via an interlayer insulating film, and
- wherein the integrated circuit and the laminate are connected via through wiring that passes through the interlayer insulating film.
5 more elements
Dependencies are inferred from the claim text.