Two-dimensional finite-difference time-domain simulation for rewritable optical disk surface structure design
Two-dimensional finite-difference time-domain simulation for rewritable optical disk surface structure design
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DOI：
10.1364/ao.35.002477
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发表时间：
1996-05-10
期刊：
影响因子：
1.9
通讯作者：
Ziolkowski, RW
中科院分区：
文献类型：
--
作者：
Judkins, JB;Haggans, CW;Ziolkowski, RW
提出了一种新的处理聚焦光束与可重写光盘相互作用的二维有限差分时域模拟方法，并进行了实验验证。在该模拟中，考虑了可重写多层堆栈的真实材料特性和盘的非周期性：地形。对于带有预刻槽和无限长预格式化凹坑的磁光盘，推挽式跟踪伺服信号的计算值与实测值吻合很好。为了验证仿真作为设计工具的有效性，给出了0.9微米磁道间距、连续、复合伺服格式磁光盘的设计过程。(C)1996年美国光学学会
A novel two-dimensional finite-difference time-domain simulation for treating the interaction of a focused beam with a rewritable optical disk is detailed and experimentally validated. In this simulation, the real material properties of the rewritable multilayer stack and the aperiodic nature of the disk: topography are considered. Excellent agreement is obtained between calculated and measured push-pull tracking servosignals for magneto-optical disks with pregrooves and infinite-length preformat pits. To demonstrate the utility of the simulation as a design tool, the design process for a 0.9-mu m track pitch, continuous, composite servoformat magneto-optical disk is given. (C) 1996 Optical Society of America