抄録
Accurate prediction method for evaluating an interaction of near-field light between an extremely small aperture and a patterned media is quite essential in developing ultra high-density optical data storage. For this purpose, we have developed the numerical simulation method based on Finite-Difference Time-Domain (FDTD) Algorithm and have compared the numerical results of a) real-time signal waveform, b) signal contrast, and c) power spectrum with those of experimental results obtained by a planar aperture mounted slider flying across the simple 200-400 nm line/space metal patterns. Good accordance between both results implies that this prediction method will be improved to that of designing an advanced optical head capable of more than 100 Gbits/inch2 areal density.
