Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguide
US8467276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Sep 17, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording and reproduction apparatus has a magnetic recording medium, a light source that outputs a light beam to heat the medium, and a near-field light head confronting a surface of the medium. An optical waveguide introduces a light beam from the light source into the near-field light head to generate near-field light. A control section supplies a current to a recording element of the near-field light head for generating a recording magnetic field in a direction of the medium. A photoelectric composite wiring line has the optical waveguide and at least one electric wiring line integral with the optical waveguide and electrically connecting the near-field light head to the control section. The optical waveguide and the electric wiring line branch off from a distal side of the photoelectric composite wiring line so as to connect to the near-field light head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.