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摘要
In this paper, the optical-matrix method and Monte Carlo method are combined to analyze the characteristics of media noise, which is induced by inhomogeneity of optical constants of materials in a phase-change optical disk. We obtained the reflectivity of the optical disk with recorded domain, both in crystalline phase and in amorphous phase, by the use of an optical-matrix method. Adding a random variable to the refractive index of an arbitrary layer, we use the Monte Carlo method to analyze the noise characteristics contributed by the inhomogeneity of the materials of the optical disk. The results reveal that the noise level mostly depends on the Ge2Sb2Te5 material and the undercoat layer.
- 出版日期2004-3
- 单位复旦大学
