Title :
Nonlinear components in optical disk signals: analysis and compensation
Author :
Maeda, Takeshi ; Minemura, Hiroyuki ; Shimano, Takeshi
Author_Institution :
R&D Group, Hitachi Ltd., Yokohama, Japan
Abstract :
We analyzed the reasons for nonlinearity in readout signals from optical disks, considering the contributions of both write and read processing. We applied the results of analysis in a method that eliminates nonlinear effects. We found that multipulse write waveforms and adaptive write control eliminate the effects of nonlinear components in the case of isolated marks and series of marks, respectively.
Keywords :
optical disc storage; optical information processing; adaptive write control; multipulse write waveforms; nonlinear components; optical diffraction; optical disk signals; optical memory; optical recording; read processing; readout signals; signal processing; write processing; Disk recording; Nonlinear optical devices; Nonlinear optics; Optical devices; Optical distortion; Optical feedback; Optical recording; Optical signal processing; Signal analysis; Writing; Nonlinearities; optical diffraction; optical memory; optical recording; signal processing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.842064
