本論文主要在說明三維近場光碟(near-field optical disk)的讀取與循軌特性的分析。文中一開始先介紹本研究的基本理論,接者說明模擬相變光碟的servo特性,包括錯誤循軌訊號(tracking error signal)和錯誤聚焦訊號(focus error signal)。再來就是本研究的重點,首先分別討論隨機奈米結構層(random nanostructures)對近場光碟讀取訊號解析度的影響。依照隨機奈米結構層中粒子密度和粒子大小的不同,分為6個情況來討論對於近場光碟讀取訊號解析度的影響,粒子的直徑越小,讀取訊號的解析度越好。最後討論近場光碟的循軌(tracking)特性並且探討不同隨機奈米結構層中粒子密度和粒子大小對近場光碟循軌的影響。
The main purpose of this thesis is to analysis the characteristics of readout and tracking on three-dimension near-field optical disk. First, we introduce the fundamental theory of our research, and to simulate the characteristics of servo of phase change optical disk, it was included the tracking error signal and focus error signal. And then we discuss the influence of random nanostructures for the resolution capability of readout signal of near-field optical disks. In accordance with the difference of density and size of particle on nanostructures, the smaller the diameter of the particle, the resolution of readout signal is better. Finally, we discuss the characteristics of tracking of near-field optical disks, and to study of the influence of tracking by the difference of the density and size of particles of nanostructures.