Waveguide with optical isolator for heat-assisted magnetic recording
US11069376B1 · kind B1 · utility
3Cited by
29References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2020 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Sep 17, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.