Corrosion resistance cap located on end of waveguide core
US10002626B1 · kind B1 · utility
5Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A waveguide core extends from an input coupler towards a media-facing surface of a read/write head. A cap is located between a terminating end of the waveguide core and the media-facing surface. The cap is formed of a high index of refraction, high-corrosion resistant material that is different than a material used to form the waveguide core. A near-field transducer is proximate the cap in a down-track direction. A head overcoat on the media-facing surface covers the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.