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US 8,913,468 B1Granted
Resonator enhanced near field transducer
AssigneeSeagate Technology LLC
InventorChubing Peng
Life of this patent
Estimating the term…
Abstract
An apparatus includes a near field transduce (NFT), a waveguide core, and a dielectric resonator. The waveguide core is configured to propagate electromagnetic radiation. The dielectric resonator is disposed between the waveguide core and the NFT and is configured to transfer energy of the electromagnetic radiation to the NFT.
Claims18
An apparatus, comprising:
- a near field transducer;
- a waveguide core configured to propagate electromagnetic radiation;
- and
- a dielectric resonator disposed between the waveguide core and the near field transducer, the dielectric resonator configured to transfer energy of the electromagnetic radiation to the near field transducer,
- wherein an index of refraction of the dielectric resonator varies with distance from the near field transducer.
2 more elements
An apparatus, comprising:
- a magnetic write pole;
- a heat sink at least wrapped partially around the magnetic write pole;
- a near field transducer proximate the magnetic write pole;
- a waveguide core suitable for propagation of electromagnetic radiation;
- and
- a dielectric resonator disposed between the waveguide core and the near field transducer, the dielectric resonator configured to transfer energy of the electromagnetic radiation from the waveguide core to the near field transducer,
- wherein an index of refraction of the dielectric resonator varies with distance from the near field transducer.
4 more elements
A method, comprising:
- propagating electromagnetic radiation in a waveguide core;
- transferring energy from the electromagnetic radiation to a near field transducer through a dielectric resonator disposed between the waveguide core and the near field transducer;
- and
- converting the electromagnetic radiation to surface plasmons in the near field transducer,
- wherein an index of refraction of the dielectric resonator varies with distance from the near field transducer.
2 more elements
Dependencies are inferred from the claim text.