Abstract
Recently, general optical-storage-media's capacity reached a limiting point due to shorter wavelengths and higher numerical apertures. Therefore, we need to develop novel optical storage system. In this research, a multi-layered high-density optical storage media has been proposed. The media has nanostructures composed of 200-nm-diameter photosensitive particles. Each particle is used for digital recordable pits. Its optical shape signal is picked up with a polarization-interferometric nonlinear confocal microscope equipped with a high numerical aperture objective. In the disk proposed, no electronically produced reference signal is necessary for clock data recovery. So, no jitter occurs in the recovery through nonperiodic clock signal.
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