Open AccessJitter-free multi-layered nanoparticles optical storage disk with buffer ring
Author(s) -
Chikara Egami,
Naoto Nagaosa,
Takuya Okawa
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.015901
Subject(s) - jitter , optics , buffer (optical fiber) , numerical aperture , materials science , optical disc , signal (programming language) , 3d optical data storage , optical storage , nanoparticle , microscope , optoelectronics , computer science , nanotechnology , physics , telecommunications , wavelength , programming language
A multi-layered nanoparticles optical disk has been developed for a jitter-free high-density data storage system. The disk has nano structures composed of 300-nm-diameter photosensitive particles and 30-nm-width non-photosensitive buffer rings around them. With the buffer rings into the nanoparticles disk, a conventional confocal microscope equipped with a low numerical aperture (NA) objective picked up a particle's shape signal to generate a synchronous signal on its own. In the three-dimensional structured disk proposed, no electronically-produced reference signal is necessary for clock data recover (CDR); no jitter occurs in data decoding.