Simulation on phase change mark forming process and read out signal characteristics

To obtain high bit density on a phase change optical disc, it is essential to understand what are the dominant physical effects to record marks on PC media. Computer simulation is one of the most convenient methods to consider an appropriate physical model of such a mark forming process. The authors have studied computer simulation of phase change mark forming processes. Our next step is to simulate the read out signal characteristics from the written mark, and this theme is described in this paper.