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US 2012/0057440 A1Published application
Grating For VCSEL Coupling To A Heat Assisted Magnetic Recording Head
AssigneeSeagate Technology LLC
InventorsWilliam Albert Challener, Michael Allen Seigler
Life of this patent
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Abstract
An apparatus includes a waveguide including a core layer having curved edges shaped to reflect light to a focal point, and a grating positioned adjacent to or imbedded in the core layer, wherein at least a portion of the grating is positioned between the curved edges and adjacent to or imbedded in a portion of the core layer that is not traversed by light reflected from the curved edges. A data storage device that includes the apparatus is also provided.
Claims20
An apparatus, comprising:
- a waveguide including a core layer having curved edges shaped to reflect light to a focal point, and
- a grating positioned adjacent to or imbedded in the core layer, wherein at least a portion of the grating is positioned between the curved edges and adjacent to or imbedded in a portion of the core layer that is not traversed by light reflected from the curved edges.
An apparatus, comprising:
- a data storage medium;
- a transducer including a waveguide having a core layer with curved edges shaped to reflect light to a focal point and a grating positioned adjacent to or imbedded in the core layer, wherein at least a portion of the grating is positioned between the curved edges and adjacent to or imbedded in a portion of the core layer that is not traversed by light reflected from the curved edges;
- a light source positioned to direct light onto the grating;
- and
- an arm for positioning the transducer with respect to the data storage medium.
2 more elements
Dependencies are inferred from the claim text.