Simulation study for high density optical disk systems

摘要

A simulator based on the scalar diffraction theory is developed. Its validity is confirmed by comparison with the experimental results for 4.7 GB DVD-RAM. The simulator indicates that adopting the (1,7)RLL code and the PRML method leads to a 29.5 GB system, where a blue laser, a 0.85 NA objective lens and a 0.1 mm thickness substrate are used. The simulation results are compared with experimental results for a 28 GB system.