Mode splitter between TE and TM polarization for heat-assisted magnetic recording device
US10811043B2 · kind B2 · utility
0Cited by
22References
20Claims
0Family size
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Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Dec 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first waveguide core extending along a light-propagation direction and configured to receive light from a light source at a combined transverse electric (TE) mode and a transverse magnetic (TM) mode. A second waveguide core is spaced apart from the first waveguide core and is configured to couple light at a TM mode to the second waveguide core. A near-field transducer (NFT) is disposed at a media-facing surface of a write head, the NFT receiving the light from the first waveguide core or the second waveguide core and heating a magnetic recording medium in response thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.