標題: Multi-level recording in erasable phase-change media by light intensity modulation
作者: Chen, YL
Shieh, HPD
光電工程學系
Department of Photonics
關鍵字: light intensity modulation;multi-level recording optical disk;pulse position modulation;multi-layer
公開日期: 2000
摘要: Multi-level recording has advantage of increasing the recording density without extensively altering the current optic configuration. In this paper, a new four-level recording phase-change disk using three-recording layers was demonstrated. By modulating the intensity of the laser pulse, marks were chosen to record in any of recording layers, to form four recording regions. Utilizing the property of the phase change media whose amorphous and crystalline states differ largely in refractive indices, each recording region corresponds to different reflectance. For the four-level recording disk, each recording region represents two-bit data, then the recording density of the four-level disk is a factor of two higher than that of a conventional disk recorded by adopting the pulse position modulation (PPM).
URI: http://hdl.handle.net/11536/19208
http://dx.doi.org/10.1117/12.390522
ISBN: 0-8194-3720-4
ISSN: 0277-786X
DOI: 10.1117/12.390522
期刊: OPTICAL STORAGE AND OPTICAL INFORMATION PROCESSING
Volume: 4081
起始頁: 60
結束頁: 62
顯示於類別:會議論文


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