Recording characteristics of high-density thin optical disk using near-field optical recording
Abstract
We report on the recording characteristics of a near-field optical recording thin optical disk (NFR-TOD). We proposed a new cooling-less-type write strategy for recording, applied it to the NFR-TOD experimental system, and also applied a partial response maximum likelihood (PRML) signal processing, which was evaluated and optimized the PR coefficient for playback signals of the prototype NFR-TOD. The NFR-TOD has a track pitch of 160 nm and improved recording characteristics. The experimental results of the prototype NFR-TOD and the system indicate sufficiently low bit error rates (bERs) for recorded data at a fourfold higher recording density than the current Blu-ray disk.
- Publication:
-
Optical Review
- Pub Date:
- September 2014
- DOI:
- 10.1007/s10043-014-0084-z
- Bibcode:
- 2014OptRv..21..541K
- Keywords:
-
- near-field optical recording;
- thin optical disk;
- solid immersion lens;
- high density;
- partial response maximum likelihood