Optical storage system for 0.4 mm substrate media using 405 nm laser diodeand numerical aperture 0.60/0.65 objective lens

Citation
Jw. Ko et al., Optical storage system for 0.4 mm substrate media using 405 nm laser diodeand numerical aperture 0.60/0.65 objective lens, JPN J A P 1, 40(3B), 2001, pp. 1604-1608
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Volume
40
Issue
3B
Year of publication
2001
Pages
1604 - 1608
Database
ISI
SICI code
0021-4922(200103)40:3B<1604:OSSF0M>2.0.ZU;2-3
Abstract
The most important application of the blue-laser optical storage system is the recording high-definition digital broadcasting. For this application, t he next-generation blue laser optical storage system requires a data capaci ty of at least 2 h of a digital broadcasting data stream with a data transf er rate of 23.5 megabits per second (Mbps). In addition to the capacity goa l, system compatibility with the conventional digital versatile disc (DVD) system as well as the compact disc (CD) system is important. In order to sa tisfy the requirements of blue-laser optical storage, a system for media wi th a substrates thickness of 0.4 mm. was proposed. and improved molding tec hnology. crosstalk cancellation technology, dynamic tilt compensation techn ology and quadrature phase shift keying (QPSK) modulated wobble addressing method were developed for the system. We confirm the feasibility of the pro posed system for media with a 0.4 mm substrate using a 405 nm blue laser di ode and objective lens with a numerical aperture (NA) of 0.6 (0.65 for rewr itable system).