Abstract

A new scalar diffraction modeling method for simulating the readout signal of optical disks is described. The information layer is discretized into pixels that are grouped in specific ways to form written and unwritten areas. A set of 2D wave functions resulting from these pixels at the detection aperture is established. A readout signal is obtained via the assembly of wave functions from this set according to the content under the scanning spot. The method allows efficient simulation of jitter noise due to edge deformation of recorded marks, which is important at high densities. It is also capable of simulating a physically irregular mark, thereby helping to understand and optimize the recording process.

© 2007 Optical Society of America

Nonlinear signal-processing model for scalar diffraction in optical recording

Wim M. J. Coene
Appl. Opt. 42(32) 6525-6535 (2003)

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Aplanatic condition required to reproduce jitter-free signals in an optical digital disk system

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Nonlinear signal-processing model for signal generation in multilevel two-dimensional optical storage

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