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引言 本文假定读者已经知道光盘存储中的一些基本的专业词 汇,并且也已了解光盘信号的读取方法、“高频信号”(High Frequency)和“网眼图”(Eye Pattern)是如何形成的、注塑 凹坑坑形的理论深度计算、光盘的基本膜层结构、只读光盘 和可录光盘的区别、以及光盘的收缩率和原子力显微镜下所观 察的沟槽立体几何图形之间的关系等一些有关光存储的基础知 识,那么本文中将进一步探讨光存储中光学头的基本结构,自 解析推挽道跟踪信号的形成原理,以及物理上偏振光、双折射
INTRODUCTION This paper assumes that readers already know some basic terminology of disc storage and have also learned how to read disc signals, how the “High Frequency” and “Eye Patterns” are formed, The theoretical depth calculation of injection pit shape, the basic structure of the optical disc, the difference between a CD-ROM and a recordable disc, and the relationship between the shrinkage of the disc and the stereoscopic geometry of the groove observed under the AFM On the basic knowledge of optical storage, then this article will further explore the basic structure of optical storage optical head, self-analytical push-pull tracking signal formation principle, as well as the physical polarization, birefringence