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US 2006/0233061 A1Published application
Alignment features for heat assisted magnetic recording transducers
AssigneeSeagate Technology LLC
InventorsTim Rausch, William Challener, Edward Gage, Christophe Mihalcea, Chubing Peng, Patrick Chu, Kevin Gomez
Life of this patent
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Abstract
An apparatus comprises an optical transducer positioned adjacent to a storage medium and including a waveguide and a grating for coupling light into the waveguide, a light source transmitting light to the grating, and a detector for detecting a portion of the light, wherein the detected portion of the light has a magnitude that varies in response to the amount of light coupled into the waveguide.
Claims30
An apparatus comprising:
- an optical transducer positioned adjacent to a storage medium and including a waveguide and a first grating for coupling light into the waveguide;
- a light source for transmitting light to the first grating;
- and
- a first detector for detecting a portion of the light, wherein the detected portion of the light has a magnitude that varies in response to the amount of light coupled into the waveguide.
1 more element
An apparatus comprising
- a storage medium;
- an actuator arm for positioning an optical transducer adjacent to a surface of the storage medium, wherein the optical transducer includes a grating for coupling light into a waveguide;
- a curved mirror;
- and
- a light source for transmitting light toward the mirror, wherein the light is reflected toward the grating.
2 more elements
An apparatus comprising:
- a storage medium;
- an actuator arm for positioning an optical transducer adjacent to a surface of the storage medium, wherein the optical transducer includes a grating for coupling light into a waveguide;
- and
- a light source for free space transmission of light toward the grating.
1 more element
Dependencies are inferred from the claim text.