Deep groove method on high density optical disk memory

Author

Morita, S. ; Nishiyama, M. ; Furuta, M. ; Iida, H. ; Niwa, T.

Author_Institution

Dept. of Optomechatronic Res. & Dev., Nikon Corp., Yokohama, Japan

fYear

1997

fDate

7-9 April 1997

Firstpage

92

Lastpage

93

Abstract

Recently, standardization of the DVD-RAM and that of the 8/spl times/130 mm MO are about to be finalized. These standardizations are expected to accelerate the use of optical disks in the area of multi-media. To achieve higher density optical disks, it is necessary to narrow the track pitch without working at shorter wavelengths. This paper describes an optical disk in which data is recorded on both lands and grooves with a reduced track pitch and a deeper-than-usual groove, a technique we call the deep groove (DG) method.

Keywords

magneto-optical recording; optical crosstalk; optical disc storage; optical fabrication; optical polymers; sputter etching; DVD-RAM; RIE mastering; cross-erase suppression; cross-talk power margin; data recording; deep groove method; high density optical disk memory; magnetooptical disks; multi-media; phase change optical disks; polycarbonate substrate; reduced track pitch; stampers; standardization; track pitch narrowing; Disk recording; Fluctuations; Injection molding; Noise robustness; Optical crosstalk; Optical recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Data Storage Topical Meeting, 1997. ODS. Conference Digest

Conference_Location

Tucson, AZ, USA

Print_ISBN

0-7803-3885-5

Type

conf

DOI

10.1109/ODS.1997.606137

Filename

606137