Zobrazeno 1 - 10 of 11 pro vyhledávání: '"Osamu Kawakubo"'
1
Servo Technologies in a Near-Field Optical Disk Drive System
Autor: Ariyoshi Nakaoki, Sunmin Kim, Tsutomu Ishimoto, Takao Kondo, Osamu Kawakubo, Takeshi Mizukuki
Publikováno v: Japanese Journal of Applied Physics. 47:5814-5821
A near-field optical disk drive (NFDD) system has been predicted as a storage system with a capacity higher than 100 Gbytes in a 12-cm-sized disk and with a data transfer rate higher than 100 Mbps. The major advantage of an NFDD system with a solid i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8a1d9d9ec55e142ba48c79fd1b2f33e
https://doi.org/10.1143/jjap.47.5814
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3
System Aspects of Dual-Layer Phase-Change Recording with High Numerical Aperture Optics and Blue Laser
Autor: Holger Friedrich Hofmann, Osamu Kawakubo, Joachim Knittel, Jochen Hellmig, Hartmut Richter, Toshiyuki Kashiwagi, Andrei Mijiritskii
Publikováno v: Japanese Journal of Applied Physics. 42:956-960
In this publication, key technologies for blue laser recording and dual layer phase-change disks with a total capacity of 50 Gbytes are explained and system margins are evaluated. Key challenges are the phase-change recording layer design, a robust r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::068b114f5b8d6e39a57d6c7f5dfb50c2
https://doi.org/10.1143/jjap.42.956
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4
Fourier modal method applied to the electric field calculation for groove-only recording media
Autor: Kimihiro Saito, Yutaka Kasami, Yuji Kuroda, Masanobu Yamamoto, Osamu Kawakubo
Publikováno v: SPIE Proceedings.
We describe a FMM (Fourier Modal Method) based rigorous vector diffraction method that can be applied to trapezoidal groove structures. Applying this method to the calculation of the electric field on the surface of the recording layer for DVR groove
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5f4886775b63a3bf6fedf2ee1f5546a
https://doi.org/10.1117/12.453379
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6
Eccentricity Compensation Mechanism for Improving Reliability of Removable Performance in Near-Field Optical Disc Drive System
Autor: Tsutomu Ishimoto, Osamu Kawakubo, Sunmin Kim, Ariyoshi Nakaoki
Publikováno v: Japanese Journal of Applied Physics. 47:5953-5954
In this paper, we propose the eccentricity-compensating actuator mechanism for near-field (NF) optical disc drives. In this proposed dual-stage compensating actuator mechanism, the disc-spindle unit is actuated instead of the solid immersion lens (SI
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a03ebd270127ceacd17679fa809c090d
https://doi.org/10.1143/jjap.47.5953
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7
System of laser pump and synchrotron radiation probe microdiffraction to investigate optical recording process
Autor: Masahiro Birukawa, Akio Tsuchino, Yoshimitsu Fukuyama, Yoshihito Tanaka, Koji Sekiguchi, Masaki Takata, Kiminori Ito, Nobuhiro Yasuda, Hitoshi Osawa, Kazuhiko Fujiie, Kazuya Hisada, Shigeru Kimura, Toshiyuki Matsunaga, Osamu Kawakubo, Rie Kojima, Noboru Yamada
Publikováno v: Review of Scientific Instruments. 84:063902
We have developed a system of laser-pump and synchrotron radiation probe microdiffraction to investigate the phase-change process on a nanosecond time scale of Ge2Sb2Te5 film embedded in multi-layer structures, which corresponds to real optical recor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a757a739bb7b4b5aaf5a47eace9cb07
https://doi.org/10.1063/1.4807858
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8
109 Gbit/in.2Recording on Near-Field Optical Disc Using Combination of Partial-Response Channel and Low-Density Parity-Check Code
Autor: Ariyoshi Nakaoki, Tetsu Watanabe, Takahiro Ohkubo, Osamu Kawakubo, Tamotsu Yamagami
Publikováno v: Japanese Journal of Applied Physics. 48:03A042
The signal properties were examined at recording densities higher than 100 Gbit/in.2 in our solid immersion lens recording system of 1.84 numerical aperture (NA). The low-density parity-check coded partial-response (PR) 17-parity preserve/prohibit (P
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::298711723638243dd4e3c132c4834ae9
https://doi.org/10.1143/jjap.48.03a042
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9
High-Density Recording with a Near-Field Optical Disk System Using a Medium with a Top Layer of High Refractive Index
Autor: Noriyasu Shinohara, Sunmin Kim, Norihiko Saito, Tomomi Yukumoto, Ariyoshi Nakaoki, Tsutomu Ishimoto, Takeshi Mizukuki, Takao Kondo, Osamu Kawakubo, Takeshi Yamasaki, Miwa Honda, Kimihiro Saito
Publikováno v: Japanese Journal of Applied Physics. 48:03A015
A near-field optical technology using a solid immersion lens (SIL) has been actively studied to expand the storage capacity higher than 100 Gbytes per layer in a 12-cm-sized optical disk. However, the working distance of an objective lens in a near-f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1843daa7d2801f48488047c0234978d5
https://doi.org/10.1143/jjap.48.03a015
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10
Large Capacity and High-Data-Rate Phase-Change Disks
Autor: Yutaka Kasami, Shigeki Takagawa, Katsuhiro Seo, Yuji Kuroda, Masahiro Yamada, Masumi Ono, Osamu Kawakubo
Publikováno v: Japanese Journal of Applied Physics. 39:756
Large-capacity phase-change disks permitting higher data-transfer rates have been developed for 0.85-numerical-aperture (NA) recording systems. Three methods to improve the recording data rate were examined. First, the recording layer was sandwiched
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7906eca37f96400c049c14214fc7c62
https://doi.org/10.1143/jjap.39.756
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