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 OPTICAL DATA HOME

GENERAL PROGRAM
 
 

 

Monday, 15 May

Tuesday, 16 May

Wednesday, 17 May

 

Monday, 15 May 2000 

 

8:00am ­ 8:15am Opening Remarks 

Doug Stinson, Siros Technologies, USA 

 

8:15am - 9:45am 

Session MA: Mastering and ROM 

Session Chairs: M. O'Neill, Calimetrics, USA, H. Kobori, Toshiba, JAPAN 

 

8:15am - 8:45am (Invited) 

MA1 "High Density Recording Using an Electron Beam Recorder", Masahiro Katsumura and Tetsuya Iida, Pioneer Corporation, Saitama, JAPAN 

An EBR exhibited satisfactory performance to realize a high density optical recording of over 20GB. It was verified by directly reproducing the substrates. 

 

8:45am - 9:15am (Invited) 

MA2" Further Advances in Electron Beam Recording", Gerald Reynolds, Nimbus Technology & Engineering Ltd., Monmouth, U.K. 

The development of a production Electron Beam Recorder designed for making masters for optical discs of up to 100 gigabytes capacity is discussed. A second generation electron beam column for this machine will also be discussed and some recent results of optical discs ranging incapacity from 4.7 GB to 30 GB will be presented. 

 

9:15am - 9:30am 

MA3 "High Quality Optical Disc Stampers with Round Edge Grooves", Seiji Morita, Madoka Nishiyama, Hiroshi Konishi, Masatoshi Hayashi, Toshio Akiyama, and Tatsuo Niwa, Nikon Corporation, Yokohama, JAPAN 

Stampers with a round shape edge deep groove were actually made. Substrate replication separability was markedly improved. No cloud problem and longer lifetime of stampers were confirmed. 

 

9:30am - 9:45am 

MA4 "GBR (Groove Baseband Recording) for an optical disc ROM", Seiji Kobayashi, Toshihiro Horigome, Hisayuki Yamatsu, Shin Masuhara and Kimihiro Saito, Sony Corporation, Tokyo, JAPAN 

In a recording method named GBR, data is converted to QAM signal and recorded as a wobbling of groove walls. Experimental results for 1.5 times of areal density than DVD will be shown. 

 

9:45am - 10:15am BREAK 

 

10:15am - 11:45am 

Session MB: Short-Wavelength Systems 

Session Chairs: D. Stinson, Siros Technologies, USA, D. H. Shin, Samsung, KOREA 

 

10:15am - 10:45am (Invited) 

MB1 "Progress in Optical Disk Recording with over 20 GB of Capacity", Kiyoshi Osato, Isao Ichimura, Fumisata Maeda, Kenji Yamamoto and Yutaka Kasami, Sony Corporation, Tokyo, JAPAN 

We have developed an optical disk system with over 20 GB of capacity using a high NA 0.85 objective lens and a GaN laser diode. 

 

10:45am - 11:00am 

MB2 "Blue Phase Change Recording at High Data Densities and Data Rates", M.J. Dekker, N. Pfeffer, M. Kuijper, B. Tieke, Philips Research, Eindhoven, THE NETHERLANDS, I.P.D. Ubbens, Philips Optical Storage, Eindhoven, THE NETHERLANDS, Wim Coene, Philips Research Laboratories, Eindhoven, THE NETHERLANDS 

We developed 120 mm phase change discs that allow for both high capacity (22 GB single layer) and high data rates: 50 Mbps. 

 

11:00am - 11:15am 

MB3 "19.8 GBytes ROM Disc Readout Using a 0.7 NA Single Objective Lens and a Violet Laser Diode", Tetsuya Kondo, Atsushi Hayami, Tsuyoshi Oki, Junichiro Tonami, Eiji Nakagawa, Takeo Kojima, and Makoto Itonaga, Victor Company of Japan, LTD., Yokosuka, JAPAN 

The noise reduced disc and the signal reproduction system with the symmetry compensatory function enhance the disc capacity up to 19.8 GBytes per DVD size.

 

11:15am - 11:30am 

MB4 "High Density Optical Disc Readout Using a Blue Laser Diode and a Transparent Plastic Substrate with 0.3mm Thickness", Kyung-Chan Park, Hyung-Nam Kim, Seong-Yun Jeong, Seong-Keun Ahn, Taek-Soo Lee, Jin-Yong Kim, Jun-Seok Lee, Ji-Byung Kim, Seong-Won Lee, Dong-Cheol Lee, LG Corporate Institute of Technology, Seoul, KOREA 

We prepared and tested a disc that has a transparent plastic substrate of 0.3mm thickness to confirm the readout capability using a blue laser diode. 

 

11:30am - 11:45am 

MB5 "Super High Density Optical Disc by Using Multi-Layer Structure", Noriyoshi Shida, Keiji Suga, Takanobu Higuchi, Tetsuya Iida, Pioneer Corporation, Saitama, JAPAN 

A multi-layer structure was chosen to realize over 50 GB optical disc. Basic researches into a space layer led the authors opt for photopolymer sheet. 

 

11:45am - 1:30pm LUNCH 

 

1:30pm - 3:15pm 

Session MC: Near-Field 

Session Chairs: G. Kino, Stanford University, USA, K. Goto, Tokai University, JAPAN 

 

1:30pm - 2:00pm (Invited) 

MC1 "Advanced Recording Method using a Near Field Optics and the GMR Head", Kenchi Ito, Hideki Saga, Hiroaki Nemoto and Hirofumi Sukeda, Hitachi Ltd., Tokyo, JAPAN 

An Advanced recording method using a blue laser and a near-field optics coupled with magnetic flux signal detection using a GMR sensor are demonstrated. 

 

2:00pm - 2:30pm (Invited) 

MC2 "Near-Field Phase-Change Recording Using a GaN Laser Diode", Koichiro Kishima, Isao Ichimura, Kenji Yamamoto, Kiyoshi Osato, Yuji Kuroda, Atsushi Iida and Kimihiro Saito, Sony Corporation, Tokyo, JAPAN 

We developed a 1.5-Numerical-Aperture optical setup using a GaN blue-violet laser diode. The obtained eye-pattern demonstrates near-field recording under the linear density of 90 nm/bit. 

 

2:30pm - 2:45pm 

MC3 "Direct Semiconductor Laser Readout in Optical Data Storage", Janne Aikio, VTT Electronics, Oulu, FINLAND and Dennis Howe, University of Arizona, Tucson, AZ 

Optical disk readout based on direct optical feedback to a semiconductor laser is studied via simulations. Techniques for achieving various types of enhanced playback are discussed. 

 

2:45pm - 3:00pm 

MC4 "Characteristics of Gap-induced Aberration in Solid immersion Lens System", Joshua Jo and Tom Milster, University of Arizona, Tucson, AZ 

Gap-induced phase and amplitude apodization from several SIL configurations is examined. Spot-width increase is primarily due to phase apodization, which we call gap-induced aberration. Experiments verify the simulations. 

 

3:00pm - 3:15pm 

MC5 "The Fabrication and Characterization of Nano-Aperture VCSEL Array Head for High Density Near-Field Optical Data Storage", Young-Joo Kim, Kazuma Kurihara, Kazuhiro Suzuki, Akihito Yamaguchi, and Kenya Goto, Tokai University, Shizuoka, JAPAN 

Small nano-aperture was fabricated on the emitting surface of VCSEL arrays and the properties were characterized for using in the near-field optical data storage of high data capacity and speed. 

 

3:15pm - 3:45pm BREAK 

 

3:45pm - 5:00pm POSTDEADLINE SESSION 

 

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Tuesday, 16 May 2000 

 

08:00am - 09:30am 

Session TuA: Media Theory & Modeling 

Session Chairs: T. Hurst, Hewlett Packard, USA, Takeo Ohta, Matsushita Electric, JAPAN 

 

8:00am - 8:15am 

TuA1 "Theoretical Investigation of Thermal Cross-track Cross-talk in High Density DV-RAM System", Chubing Peng and Masud Mansuripur, University of Arizona, 

Tucson, AZ 

Temperature profile in a land-groove phase-change disk has been computed. It is found that the temperature distribution in medium is different between land-track and groove-track and it is also dependent on the polarization of the incident beam. 

 

8:15am - 8:30am 

TuA2 "Simulation on phase change mark forming process and read out signal characteristics", Hidehiko Kando, Yoshiko Nishi, Motoyasu Terao, Takeshi Maeda, Makoto Miyamoto, Akemi Hirotsune and Junko Ushiyama, Hitachi Ltd., Tokyo, JAPAN 

Read-out signal amplitude was calculated with phase change mark forming simulator. Comparison of pure tone signal amplitude with experiment and calculation shows calculation model is reasonable. 

 

8:30am - 8:45am 

TuA3 "Simulation of Phase Transformations in Phase-Change Media", Ewan Wright, Pramod Khulbe and Masud Mansuripur, University of Arizona, Tucson, AZ and Terril Hurst, Hewlett Packard Labs, Palo Alto, CA 

A dynamic theory is being developed to better understand transformations in phase-change media. Simulations based on this theory show encouraging agreement with time-resolved static tester measurements. 

 

8:45am - 9:00am 

TuA4 "Optical disk noise analysis using rigorous vector diffraction calculations", Kimihiro Saito, Naoyasu Miyagawa, and Masud Mansuripur, University of Arizona, Tucson, AZ 

The contributions to noises in optical disk readout caused by the surface roughness on the disk are calculated using a full vector diffraction theory. 

 

9:00am - 9:15am 

TuA5 "Estimation of thermal conductivity of magneto-optical media", Xiaodong Xun, Chubing Peng and Masud Mansuripur, University of Arizona, Tucson, AZ 

Thermal conductivity of magneto-optical media is estimated. The method is based on determining the laser power needed to reach the Curie temperature at the center of a focused spot. 

 

9:15am - 9:30am 

TuA6 "Numerical Simulation of dynamic thermo-magnetic switching and the optical signal in Magnetic Super-Resolution read-out", Amit Itagi, T.E. Schlesinger and Dan Stancil, Carnegie Mellon University, Pittsburgh, PA 

We describe the results of a three dimensional numerical model of the dynamic coupling between the read-out optical field and medium in magnetic super-resolution. 

 

9:30am - 10:00am BREAK 

 

10:00am - 11:45am 

Session TuB: Phase Change Media 

Session Chairs: D. Howe, University of Arizona, USA, N. Miyagawa, Matsushita Electric, JAPAN 

 

10:00am - 10:30am (Invited) 

TuB1 "Recording of 0.1 Micron Minimum Mark Size in a New Phase Change Media", Hiroshi Miura, Yoshitaka Hayashi, Shunsuke Fujita, Koji Ujiie and Kiyoshi Yokomori, Ricoh Company, Ltd., Yokohama, Japan 

Uniform 0.1mm marks made on surface recording discs with AgInSbTe will allow an increase in disc capacity. The distinctive mark shape was discussed. 

 

10:30am - 10:45am 

TuB2 "Crystallization behavior of as-deposited, melt-quenched, and primed amorphous states of Ge2Sb2.3Te5 films in phase change Optical recording", Pramod Khulbe, Ewan Wright and Masud Mansuripur, University of Arizona, Tucson, AZ and Terril Hurst, Hewlett Packard Labs, Palo Alto, CA 

Melt-quenched Ge2Sb2.3Te5 material shows faster crystallization response than as-deposited film. Priming as-deposited material at various levels produces responses falling in between those of the two amorphous states. 

 

10:45am - 11:00am 

TuB3 "Initialization-free DVD-RAM disk", X.S. Miao, S.L. Yong, T.C. Chong, L.P. Shi, P.K. Tan and F. Li, Data Storage Institute, SINGAPORE 

The Sb2Te3 film and Sb films were used as the additional layers of the initialization-free DVD-RAM disk. Experiment results of the initialization-free DVD-RAM disk showed SB2Te3 fillm was better than Sb film for GeSbTe phase-change media. 

 

11:00am - 11:15am 

TuB4 "Crystallization behavior of phase-change materials: comparison between nucleation- and growth-dominated crystallization", G.F. Zhou, H.J. Borg, J.C.N. Rijpers and M. Lankhorst, Philips Research Laboratories, Eindhoven, THE NETHERLANDS 

We have studied the crystallization behavior of nucleation-versus growth-determined phase change materials (GeSbTe vs. doped eutecctic SbTe). The nucleation time of doped SbTe is about 104 larger than its complete erasure time. 

 

11:15am - 11:30am 

TuB5 "Crystallization of Growth-Dominant Eutectic Phase-Change Materials", Terril Hurst, Hewlett Packard Labs, Palo Alto, CA, and Michikazu Horie, Mitsubishi Chemical, Yokohama, JAPAN and Pramod Khulbe, University of Arizona, Tucson, AZ 

Crystalline-edge growth in eutectic-based Ge(Sb70Te30) + Sb is isolated and measured using a two-laser static tester. Results are compared with conventional intermetallic phase-change materials. 

 

11:30am - 11:45am 

TuB6 "Mark Edge Jitter Model for Phase Change Recording", Aparna Sheila, T.E. Schlesinger, David Lambeth, Carnegie Mellon University, Pittsburgh, PA 

Mark edge jitter arising from random nucleation and growth processes is modeled and evaluated as a function of pre-existing nucleation sites and reflection layer thickness. 

 

11:45am ­ 1:30pm LUNCH 

 

1:30pm - 3:15pm 

Session TuC: Magneto Optics Media 

Session Chairs: M. Mansuripur, University of Arizona, USA, C. T. Chong, National University of Singapore, SINGAPORE 

 

1:30pm - 2:00pm (Invited) 

TuC1 "Huge Capacity Optical Memory Using DWDD-MO Recording", Shinichi Kai, Katsuhisa Aratani and Atsushi Fukumoto, Sony Corporation, Tokyo, JAPAN 

We achieved an user data-transfer rate of 23-Mbit/sec at a bit length of 0.11-mm using a wide-land structured DWDD medium, a 664-nm LD and a 0.60-NA objective lens. 

 

2:00pm - 2:30pm (Invited) 

TuC2 "A Challenge Over 100 Gbit/in2 Rewritable/Removable MO Storage", Akiyoshi Itoh, Nihon University, Chiba, JAPAN 

For ultra high density rewritable and removable recording, the magnetic amplifying Magneto-optical system (MAMMOS) with a combination of optics of short wave length (410nm) and high NA lens (NA=0.9) is the most likely system. 

 

2:30pm - 2:45pm 

TuC3 "15 Gbit/inch2 areal density Optical Disk using the DWDD medium with Blue LD Recording", Tetsuhiro Sakamoto, Goro Fujita, Yoshihiro Takemoto, Yuji Akiyama, Shingo Imanishi, Katsuhisa Aratani, Masayoshi Kanno and Ariyoshi Nakaoki, Sony Corporation, Tokyo, JAPAN 

We developed the optimized DWDD disk for a blue LD and obtained a jitter of 15% at the areal density of 15Gbit/inch2. 

 

2:45pm - 3:00pm 

TuC4 "High Density Magneto-Optical Recording Using a Blue Laser and CAD-MSR Media", Masataka Shinoda, Yasuhito Tanaka, Yuji Akiyama, Shingo Imanishi and Masayoshi Kanno, Sony Corporation, Tokyo, JAPAN 

We have investigated high density magneto-optical recording on CAD-MSR media using a GaN blue laser. The sufficient MO characteristics could be attained at the areal density of 10.9 Gbit/in2. 

 

3:00pm - 3:15pm 

TuC5 "High SNR Single Wavelength Readout for Qaudri-Valued MO Recording by Detecting both Magneto-Optical Rotation Angle and Ellipticity", Katsuji Nakagawa and Akiyoshi Itoh, Nihon University, Chiba, Japan 

A new high SNR readout method for quadri-valued MO recording by detecting both MO rotation angle and ellipticity with only single wavelength is proposed and experimental data are presented 

 

3:15pm ­ 3:30pm BREAK 

 

3:30pm - 5:30pm 

Session P: Poster Session 

 

P1 "Analysis of Recording Characterisitcs and Deformation Shape of Recordable disc with Metallic Thin Film", Kyung Sun Min, Youngjae Huh and Sung Hoon Kim, Samsung Advanced Institute of Technology, Suwon, KOREA 

We developed new recordable discs with metallic thin film, such as DVD-R and CD-R, to reduce material cost and to widen the process margin. The relationship between the recording characteristics and deformation shape of layers after recording was described. 

 

P2 "Multi-beam light source using optical waveguide for optical recording", Hideyo Okumura, Kiyotaka Arai, Norikazu Kawamura, Haruki Tokumaru and Haruo Okuda, NHK Science & Technical Research Labs, Tokyo, JAPAN 

A multi-beam light source using an optical waveguide was experimentally investigated. Even when the mode type of the waveguide was multi-mode, it could focus the beam at the optical spot within the diffraction limit. 

 

P3 "Microstructural Studies of Direct-Overwrite (DOW) Ag-In-Sb-Te Phase Change Optical Recording Media", Samantha Price and A.L. Greer, University of Cambridge, Cambridge, UK, C.E. Davies, Plasmon Data Systems Ltd., Hertfordshire, UK 

Microstructural changes occurring in direct-overwrite (DOW) Ag-In-Sb-Te phase-change disks were observed using Transmission Electron Microscopy and their influence on disk performance will be discussed. 

 

P4 "Automated analysis of data mark microstructure of various media in the Optical Disc Industry", Candi Cook, Donald Chernoff and David Burkhead, Advanced Surface Microscopy, Inc., Indianapolis, IN 

AFM images of recordable and non-recordable media are analyzed and calibrated to provide accurate measurements of track pitch, pit geometry, jitter, and wobble. 

 

P5 "Guided Scrambling: A New Coding Technique for Holographic Storage", Wang Yong Hong Wilson, Data Storage Institute, SINGAPORE, A.S. Immink, Universitaet Essen, Essen, GERMANY, Xu Bao Xi and Chong Tow Chong, National University of Singapore, SINGAPORE 

Guided scrambling (GS) is proposed as channel coding for digital holographic data storage. We show that GS provides an effective tool for removing detrimental array patterns. 

 

P6 "Perfomance Comparison of Equalization and Low-pass Coding for Holographioc Storage", Venkatesh Vadde, B.V.K. Vijaya Kumar, Carnegie Mellon University, Pittsburgh, PA 

We perform a comparitive investigation of the use of equalization and low-pass codes to improve density in 2D ISI channels for holographic optical data storage. 

 

P7 "Efficient Modeling of Volume Holographic Storage Channels (VHSC)", Mehmet Keskinoz and B.V.K. Vijaya Kumar, Carnegie Mellon University, Pittsburgh, PA 

This paper presents an efficient model for volume holographic storage channels. Numerical simulations show that the developed model outputs are consistent with the expectations. 

 

P8 "Theory and Modeling: Electrical and Optical Waveguide Process in Corn-shaped Optical Head Laser of Near Field Optical Disc", Wu Wan, Miao Huarui and Pei Xiandeng, Huazhong University of Sci & Tech, Hubei, CHINA 

The paper introduces characters of NFOD. It presents electrical and optical wave-guide process problems in corn-shaped optical head of NFOD and gives approximate calculations in first-grade approximativity of corn-shaped optical head of NFOD. The result is an important basis for the NFOD optical head design with ultra thin active layer and ultra small spot laser. 

 

P9 "Effect of Partial Crystallization on Formation of Amorphous Marks", Kenric Nelson, Photrek, Accord, MA, Orlando Lopez, Polariod Corporation, and Michael Ruane, Boston University, Boston, MA 

The reflectivity of an amorphous mark on a first-surface phase-change optical storage disk is shown to vary with the initial crystallization of the GST layer. 

 

P10 "High Data Rate Magneto-Optical Recording", W. Don Huber and David Schmid, Seagate Research, San Jose, CA 

High data rates of up to 180Mbps were demonstrated in a magneto-optical recording system. Techniques and equipment enabling these high rates are described. 

 

P11 "A Static Test System for Optical Data Storage Media", Arno Euteneuer, Dietmar Huggler and Thomas Weber, TuiOptics GmbH, Munich, GERMANY 

A microscope based test system is described, which includes two laser sources to write and read back static marks on optical data storage 

 

P12 "Holographic RAM for optical fiber communications", Pierpaolo Boffi, Maria Chiara Ubaldi, Davide Piccinin, Claudio Frascolla, and Mario Martinelli,CORECOM, Milano, ITALY 

Preliminary experimentation of angle-multiplexed high-efficiency digital holograms at 1550 nm is presented. The stored database constitutes a first holographic memory for optical fiber communication systems. 

 

P13 "The Reliability of Optical Disk Cluster Drive", Kunimaro Tanaka, Teikyo Heisi University, Chiba, JAPAN 

The optical cluster drive is removable, huge capacity and high data rate storage. This paper describes defect management and continuous operation of the cluster drive. 

 

P14 "New Photopolymer Materials for Holographic Data Storage", Amir Tork, Patrick Pilot and Tigran Galstian, Universite Laval, Cite Universitare, CANADA 

Holographic polymer dispersed liquid crystal (H-PDLC) materials were recently sensitized which are sensitive in the green to near infrared region. The compound is a multifunctional acrylic based photopolymerizable-recording material. Characterization of this system for optical data storage will be presented. 

 

P15 "Heat-Generation and Conduction Simulations on a Land/Groove Disc", Yoshiko Nishi, Takeshi Shimano and Hidehiko Kando, Hitachi Ltd., Tokyo, JAPAN 

FDTD simulation provides heat distribution generated inside land/groove discs. Heat conduction simulator also shows the difference between cooling process in land and groove. 

 

P16 "Various Sources of Noise in Optical Data Storage Systems", Chubing Peng and Masud Mansuripur, University of Arizona, Tucson, AZ 

Noise in optical disk readout has been examined experimentally for different polarization of the incident beam and from both the substrate side as well as the front surface side on a bare grooved glass substrate. Our results show that the noise level is dependent on the state of polarization and the medium of incidence. 

 

5:30pm - 7:30pm 

NSIC Optical Data Storage Roadmap Session 

 

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Wednesday, 17 May 2000 

 

8:00am - 9:45am 

Session WA: Alternate & Holographic Storage 

Session Chairs: V. Bhagaratula, Carnegie Mellon University, USA, S. Kobayashi, Sony Corporation, JAPAN 

 

8:00am - 8:30am (Invited) 

WA1 "3DR Technology", Lambertus Hesselink, Siros Technologies, San Jose, CA 

This invited paper describes Siros 3DR technology using a novel optical imaging technique to store digital information throughout the depth of storage media. 

 

8:30am - 8:45am 

WA2 "Single-Beam Two-Photon-Recorded Monolithic Multi-layer Optical Disks", Haichuan Zhang, Frederick McCormick, Alexander Dvornikov, Curtis Chapman, Edwin Walker and Nam-Hyong Kim, Call/Recall Inc, San Diego, CA 

Monolithic multi-layer optical disks have been recorded with single beam two-photon absorption using a high-repetition-rate laser. The recorded mark shape and critical design issues are investigated. 

 

8:45am - 9:00am 

WA3 "Servo Error Signal Generation for 2-Photon Recorded Monolithic Multilayer Optical Data Storage", Edwin Walker, Xuezhe Zheng, Frederick McCormick, Haichuan Zhang, Nam-Hyong Kim, Joe Costa, Alexander Dvornikov and Curtis Chapman, Call/Recall Inc, San Diego, CA 

Testing of servo error signal detection technique for 2-photon recorded monolothic multilayer material is investigated. A standard CD voice-coil actuator follows a fluorescent track. 

 

9:00am - 9:15am 

WA4 "Photopolymer Recording Media for High Density Holographic Data Storage", Lisa Dhar, Arturo Hale, Kevin Curtis, Melinda Schnoes, Michael Tackitt, William Wilson, Adrian Hill, Marcia Schilling, Howard Katz, and Adam Olsen, Bell Laboratories, Lucent Technologies, Murray Hill, NJ 

We describe photopolymer recording media that have enable substantial advances in the area of holographic data storage. 

 

9:15am - 9:30am 

WA5 "Rewritable holographic memory card system", Emoke Lorincz, P. Koppa, F. Ujhelyi, P.I. Richter, Technical University of Budapest, Budapest, HUNGARY and 

G. Szarvas, Optilink, G. Erdei, Optilink Hungary Ltd., Budapest, HUNGARY, P.S. Ramanujam, Risø National Laboratory, DENMARK 

Rewritable holographic memory card system provides novel solution for high density optical storage of personal data using azobenzene side-chain polyester material of Risø. 

 

9:30am - 9:45am 

WA6 "Digital Holographic Data Storage Prototype", Kevin Curtis, Lisa Dhar, Michael Tackitt, Adrian Hill, William Wilson, Arturo Hale, Melinda Schnoes, Adam Olsen, Bell Laboratories, Lucent Technologies, Murray Hill, NJ 

A holographic data storage prototype is explained. Issues include drive design, tracking, error correction and channel codes, components, and media sensititivity, dynamic range and stability. 

 

9:45am ­ 10:15am BREAK 

 

10:15am - 12:00noon 

Session WB: Systems & Applications 

Session Chairs: B. Bernacki, Iomega, USA, H. Sukeda, Hitachi, JAPAN 

 

10:15am - 10:45am (Invited) 

WB1 "Rewritable Digital Camera Disk "ID Photo", Katsusuke Shimazaki, Hitachi Maxell Ltd., Ibaraki, Japan 

A high capacity MO disk for digital still cameras, 'iD photo" was developed with recording field sensitive design for power consumption reduction. 

 

10:45am - 11:15am (Invited) 

WB2 "Multi-Level Data Storage System Using Phase-Change Optical Discs", Michael O'Neill and Terrence Wong, Calimetrics, Alameda, CA 

We present a 2GB, 8 amplitude-level, direct-overwrite system using commercial CD-RW technology. Progress towards a 10GB DVD-based rewritable system, will also be shown (0.6mm-layer, 0.74mm-pitch, 650nm-wavelength, 0.6-NA). 

 

11:15am - 11:30am 

WB3 "10 Gbit/inch2 MO-Disk Using Blue Laser", Kimitaka Kawase, Yoshihiro Muto, Kazunori Yamaguchi, Nobuhiko Ando, Yasuaki Maeda, Masahiro Yamada and Masayoshi Kanno, Sony Corporation, Tokyo, JAPAN 

We have demonstrated higher areal density land & groove recording on a blue MO system, and sufficient system margins were obtained on a 10Gbit/inch2. 

 

11:30am - 11:45am 

WB4 "To 100 GB/in2 and beyond in magneto-optic recording", Duane Karns, Jinhui Zhai, Hongwei Song, Andrew Gamble, Dan Stancil, Vijayakumar Bhagavatula, and 

T.E. Schlesinger, Carnegie Mellon University, Pittsburgh, PA 

We present results of a project aimed at demonstrating recording at a density of 100 Gb/in2 by using a super-SIL, CAD-MSR media, and turbo coding. 

 

11:45am - 12:00noon 

WB5 "11 Gbit/in2 - Magneto-optical Recording Using a CAD-MSR Disk and a Blue Laser Diode", Yasuhito Tanaka, Masataka Shinoda, Kazunori Yamaguchi and Yasuaki Maeda, Sony Corporation, Tokyo, JAPAN 

We measured the system margins of a CAD-MSR disk using a GaN blue laser diode. The recording density of 11 Gbit/in2 is practically available. 

 

12:00noon ­ 1:30pm LUNCH 

 

1:30pm - 2:45pm 

Session WC: Coding and Channels 

Session Chairs: J. Hogan, Hewlett Packard, USA, H. van Houten, Philips, THE NETHERLANDS 

 

1:30pm - 2:00pm (Invited) 

WC1 "A Bit-Engine for Digital Video Recording (DVR) on a 12 cm disc with 22 Gbytes user capacity and 50 Mbit/s data rate", Jean Schleipen, Philips Research Laboratories, Eindhoven, THE NETHERLANDS 

An optical drives has been built conforming to the physical format for digital video recording (DVR), featuring 22 Gbytes storage capacity and 50 Mb/s data rate. 

 

2:00pm - 2:15pm 

WC2 "EFMCC : A New Combi-Code for High Density Optical Recording", Wim Coene, Philips Research Laboratories, Eindhoven, THE NETHERLANDS and Ernest Chuang, Sony Corporation, Tokyo, JAPAN 

EFMCC is an RLL(2,10) channel code, constructed by combining two codes. The benefits are: guaranteed DC-control, 4% more efficient than EFMPlus, simple byte-oriented look-ahead 

DC-control encoding. 

 

2:15pm - 2:30pm 

WC3 "Effect of Transistion Noise on Turbo Decoding for Optical Data Storage", Hongwei Song and B.V.K. Vijaya Kumar, Carnegie Mellon University, Pittsburgh, PA 

The effect of mark edge noise on the bit error rate (BER) performance of turbo decoding in optical data storage is investigated. 

 

2:30pm - 2:45pm 

WC4 "Feasibility of Edge Delayed Symbols for Copy Protection in Optical Disks", Woon-Seong Yeo and Jae-Sun Lee, LG Electronics Inc., Chungbuk, KOREA 

Feasibility of edge delayed symbols was confirmed to be one of the strong means for copy protection in pre-recorded optical discs. 

 

2:45pm ­ 3:15pm BREAK 

 

3:15pm - 4:45pm 

Session: WD Components and Servo 

Session Chairs: J. Saito, Nikon, JAPAN, P. Wehrenberg, Apple Computer, USA 

 

3:15pm - 3:30pm 

WD1 "Crosstalk Cancellation for DVD-RAM Type Media With 0.5mm Track pitch", Robert Upton and Tom Milster, University of Arizona, Tucson, AZ 

Simulations using segmented pupil detection indicate 44dB crosstalk cancellation and 25% improvement in jitter for DVD-RAM type media with 0.5mm track pitch. 

 

3:30pm - 3:45pm 

WD2 "Tolerance of 3 Beam Cross-Talk Canceller", Shogo Miyanabe, H. Kuribayashi, Y. Tomita, K. Yamamoto, F. Yokogawa, Pioneer Corporation, Saitama, JAPAN 

It was confrimed that a 3 beam cross-talk canceller has sufficient margins against sub-beam offset for practical use. 

 

3:45pm - 4:00pm 

WD3 "Two-Element Objective Lens and Spherical Aberration Correction for DVR", Jan Peter Baartman, Jan Aarts, and Benno Hendriks, Philips Research Laboratories, Eindhoven, THE NETHERLANDS 

A two-element objective lens for Digital Video Recording has been developed, with electromechanical spherical aberration correction. Two generations of objective and actuator are presented. 

 

4:00pm - 4:15pm 

WD4 "Radial Tilt Detection using 3-Beam Optical Head", Ryuichi Katayama, Shunichi Meguro, Yuichi Komatsu and Yutaka Yamanaka, NEC Corporation, Kawasaki, JAPAN 

A new radial tilt detection method for rewritable optical disks using a 3-beam optical head has been developed. Its high sensitivity characteristics have been demonstrated. 

 

4:15pm - 4:30pm 

WD5 "Mathematical Modeling of Optical Disc Servo Systems", Kai Meng Hock and Wenhua Li, Sony Corporation, SINGAPORE 

A mathematical model and computer codes are developed to reliably predict the motion and stability of optical pickups in optical disc servo systems. 

 

4:30pm - 4:45pm 

WD6 "Experiemntal and analytical characterization of the mechanical performance of disks", Suresh Subramanian and Ramesh Hariharan, GE Corporate R & D, Niskayuna, NY and Bernard Land and Thomas Feist, GE Plastics, Pittsfield, MA 

Performance of disks under vibration loading is characterized using analytical and experimental techniques. Plastic disks with improved vibration performance were designed, manufactured and tested. 

 

4:45pm Closing Remarks 

Ryuichi Katayama, NEC Corporation, Kawasaki, JAPAN 

©Copyright 1999 IEEE