International Symposium on Optical Memory and Optical Data Storage Topical Meeting

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Improvement of the photo-polymer sheet for the multi-layer disk with the high NA objective lens and blue-violet laser
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 36-38
N. Shida, T. Higuchi, T. Iida
In ODS2000, we reported experimental results for the triple-layer disk using the photo-polymer (2P) sheet (N. Shida et al, ODS 2000 Tech. Dig., pp. 27-29, 2000). The subjects of the 2P sheet were the high transmittance, low variation of thickness and duplicate performance. Therefore, we developed a new 2P sheet which has sufficiently high transmittance of over 95% and sufficiently small thickness ...... hiện toàn bộ
#Lenses #Jitter #Apertures #Aluminum alloys #Research and development #Laboratories #Equalizers #Absorption #Reflectivity #Silver
Advance of dual-layer blue optical disk with (Ge,Sn)Te-Sb/sub 2/Te/sub 3/ memory films
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 404-406
N. Yamada, T. Nishihara, H. Kitaura, R. Kajima, N. Miyagawa, Y. Sakaue, K. Hisada, A. Nakamura, T. Akiyama, K. Nishiuchi
The requirements for dual layer optical disc from the view point of optical property were reviewed and practical approaches were demonstrated. It was experimentally confirmed that our new rewritable blue dual-layer optical disk with (Ge,Sn)Te-Sb/sub 2/Te/sub 3/ films shows high record-read performance for 50GB//spl phi/ 120mm capacity and a high data rate of 35Mbps with sufficient feasibility.
#Optical films #Tellurium #Dielectric films #Optical refraction #Optical variables control #Refractive index #Amorphous materials #Disk recording #Manufacturing processes #Cooling
Author index
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 69-70 - 2002
The author index contains an entry for each author and coauthor included in the proceedings record.
Holographic ROM system for high-speed replication
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 144-146
E. Chuang, H. Yamatsu, K. Saito
Conventional holographic memory systems have generally focused on a page-oriented storage approach. One common characteristic of these systems is that they require the recording of thousands of separate holograms, whether as local pages or individually placed bits, in order to fill the memory to capacity. While such configurations are suitable for write-once read-many (WORM) or rewritable memories...... hiện toàn bộ
#Holography #Read only memory #Holographic optical components #Optical recording #Optical arrays #Sensor arrays #High speed optical techniques #Optical modulation #Read-write memory #Mirrors
InSbTe phase change materials for high performance multi-level recording
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 63-65
K. Daly-Flynn, D. Strand
The accuracy of achieving each of the specified levels in multi-level optical disk media determines the maximum number of levels that can be used to write data. If the standard deviation of the written reflectivity levels is large, the levels need to be spaced further apart for accurate identification of the levels. If the reflectivity range can be increased, additional levels can be used. This re...... hiện toàn bộ
#Phase change materials #Reflectivity #Optical pulses #Testing #Optical recording #Amorphous materials #Disk recording #Optical signal processing #Crystallization #Energy conversion
High response actuator with tilt function for 12.7 mm slim optical disc drives
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 326-328
J. Aso, T. Haruguchi, S. Horinouchi
The 12.7 mm height type has become the industry standard for optical disc drives mounted in notebook PCs. The actuator built into the optical pickup, which is a key component of these optical drives, has also become thinner and smaller. Furthermore, it is required to perform highly responsive behavior to meet the market need for ever higher disc speed factors. The higher density of optical discs h...... hiện toàn bộ
#Actuators #Drives #Optical sensors #Coils #Magnetic circuits #Optical devices #Lenses #Magnets #Magnetic analysis #Frequency
HD/DVD compatible pick-up adapting singlet objective lens
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 165-167
Kyung-Chan Park, Taek-Soo Lee, Je-Jong Lee, Ji-Duk Kim, Man-Hyung Lee, Gyeong-Eon Lee, Seong-Yun Jeong, Jin-Yong Kim
Recently, many high-density optical disc systems using blue laser diodes have been reported and proposed as the next generation industry standard technologies. One of the technical proposals is to adapt NA 0.85 objective lenses at 405 nm and to use a 0.1 mm-thick cover layer. But, in this case, a technical challenge remains how to maintain the compatibility with current DVD/CDs. Last year at ISOM ...... hiện toàn bộ
#High definition video #DVD #Lenses #Holographic optical components #Optical recording #Holography #Optical devices #Optical filters #Magnetic heads #Read only memory
Multilevel signal processing technique for a 30 Gbit/inch/sup 2/ phase change optical disk system
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 278-280
N. Minagawa, H. Hayashi
Developed a Viterbi decoder for multilevel signal. Since this decoder compensates nonlinearity and pattern dependence, it improved a noise margin by 3.5dB. We confirmed the feasibility of a phase change optical disk system which has a recording density of 30Gbit/inch/sup 2/.
#Optical signal processing #Optical recording #Viterbi algorithm #Optical noise #Maximum likelihood decoding #Nonlinear optics #Disk recording #Error analysis #Degradation #Computational modeling
Recording and readout mechanisms of super-resolution near-field structure disc with silver oxide layer
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 45-47
T. Kikukawa, A. Tachibana, H. Fuji, J. Tominaga
Several technologies to increase the densities of optical discs have been proposed. Among them, the super-resolution near-field structure (Super-RENS) technique (J. Tominaga et al., Appl. Phys. Lett. vol. 73, p. 2078, 1998; H. Fuji et al., Jpn. J. Appl. Phys. vol. 39, p. 980, 2000) is attractive because it satisfies both super-high-density recording/readout and removability at the same time. In th...... hiện toàn bộ
#Disk recording #Structural discs #Silver #Optical films #Laboratories #Optical recording #Signal resolution #Crystallization #Zinc compounds #Stacking
Dual-layer-compatible optical head: integration with a liquid-crystal panel
International Symposium on Optical Memory and Optical Data Storage Topical Meeting - - Trang 392-394
H. Tanase, G. Hashimoto, K. Yamamoto, T. Tanaka, T. Nakao, K. Kurokawa, I. Ichimura, K. Osato
We have developed a dual-layer-compatible optical head integrated with a liquid-crystal panel. We conclude that our optical head possesses sufficient ability for recording and reading a dual-layer disc whose layer separation is 20 /spl mu/m or more. We have also confirmed the efficiency of a new method to drive a liquid-crystal panel, which is to mix the controlling signals of a liquid-crystal pan...... hiện toàn bộ
#Integrated optics #Optical mixing #Optical sensors #Lenses #Wires #Actuators #Frequency #Optical recording #Electrodes #Polarization
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