Patent ID: 11953742
Assignee: TDK CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 10:
11. An optical device comprising:
a plurality of magnetic elements each 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 laser diode; and
a waveguide, wherein
the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide,
at least some of light propagating in at least one of the input waveguide and the output waveguide in a direction from the laser diode toward the input waveguide or the output waveguide is applied to a first magnetic element of the magnetic elements, and
at least some of light output from the output waveguide and reflected by an object to be irradiated is applied to a second magnetic element of the magnetic elements.