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US 8,400,902 B2Granted
Optical waveguide clad material
AssigneeSeagate Technology LLC
InventorsXiaoyue Huang, Michael Christopher Kautzky, Amit Itagi, William Albert Challener, Michael Allen Seigler
Life of this patent
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Abstract
An apparatus includes a waveguide having a core layer and first and second cladding layers on opposite sides of the core layer, wherein the cladding layers comprise a binary oxide composition. In another example, the cladding layers include a ternary or quaternary combination of oxides and/or oxynitrides. In another example, the cladding layers include a silicon oxynitride.
Claims20
A waveguide comprising:
- a core layer;
- and
- cladding layers, wherein the cladding layers comprise a binary oxide or a binary oxynitride having an index of refraction of not more than about 1.9.
An apparatus comprising:
- a waveguide comprising:
- a core layer;
- a partial cladding layer, the partial cladding layer comprising a binary oxide or a binary oxynitride having an index of refraction of not more than about 1.9;
- a first cladding layer;
- and
- a second cladding layer;
- a near field transducer (NFT) comprising:
- a disc;
- and
- a peg,
- wherein the NFT is within the partial cladding layer.
8 more elements
A recording head comprising:
- a waveguide comprising:
- a core layer;
- and
- cladding layers, wherein the cladding layers comprise a binary oxide or a binary oxynitride having an index of refraction of not more than about 1.9;
- a near field transducer (NFT);
- and
- an electromagnetic radiation source,
- wherein the waveguide conducts electromagnetic radiation from the electromagnetic radiation source to the NFT.
5 more elements
Dependencies are inferred from the claim text.