High-Density Recording on a Phase-Change Rewritable Disk using a 405 nm Blue Laser Diode
Abstract
The possibility of a 28 GB capacity/layer has been studied using a blue laser diode and high-NA objective lens. Under the conditions of the disk diameter of 120 mm, cover layer thickness of 0.1 mm, track pitch of 0.32 μm and data bit length of 0.104 μm/bit, a low bit error rate (ber) of 10-5 was obtained in both modulations of D8-15 and RLL(1,7) with partial response maximum likelihood (PRML). A wide tilt margin comparable to that in the case of DVD-RAM was obtained in RLL(1,7).
- Publication:
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Japanese Journal of Applied Physics
- Pub Date:
- March 2002
- DOI:
- 10.1143/JJAP.41.1687
- Bibcode:
- 2002JaJAP..41.1687S