Light mitigation layer between write pole and waveguide
US8873352B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2014 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Mar 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus has a near-field transducer located proximate a media-facing surface of a slider magnetic recording heat. A waveguide is configured to couple light to the near-field transducer and includes a top cladding layer facing the near-field transducer, a bottom cladding layer, and a core layer between the top and bottom cladding layers. The apparatus includes a write pole with a flat portion substantially parallel to the core layer and a sloped portion extending from the flat portion of the write pole towards the media-facing surface at an angle to the core layer and to the media-facing surface. A light mitigation layer is located between the top cladding layer and the write pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.