We developed a new one-beam detection method with changeable multi division patterns, pairing with tangential spot size detection (SSD) method for focusing error detection. The changeable multi division patterns are realized by the active device, which consists of a non-polarizing HOE for tangential SSD method, liquid crystal (LC) active rotator and two different division patterns of layered polarizing blazed HOEs. The LC active rotator properly acts as the mode selector and an R/RE mode pattern for one-beam push-pull method and a ROM mode pattern for differential phase detection (DPD) method can be selected only changing the applied voltage. The newly developed system can derive one-beam push-pull signal, DPD signal, wobble signal and RF signal from the output only from five common photo detectors. Sufficient quality of these signals is experimentally confirmed. The one-beam push-pull signal is hardly affected by the stray light from other layers. The traversing noise of its focusing error signal is stably low even with high push-pull media and possibly large astigmatism. Its focusing error signal turns out to be much more stable and less influenced by groove traverses. In addition, we present a vision for next-generation slim and compact integrated optics with dual LC cells, which consist of the LC attenuator, laser noise reduction technology, and the LC mode selector, as explained above.
{"title":"Novel One-Beam Detection Method with Changeable Multi Division Patterns","authors":"N. Nishi, F. Nakano, K. Uemura","doi":"10.1117/12.692302","DOIUrl":"https://doi.org/10.1117/12.692302","url":null,"abstract":"We developed a new one-beam detection method with changeable multi division patterns, pairing with tangential spot size detection (SSD) method for focusing error detection. The changeable multi division patterns are realized by the active device, which consists of a non-polarizing HOE for tangential SSD method, liquid crystal (LC) active rotator and two different division patterns of layered polarizing blazed HOEs. The LC active rotator properly acts as the mode selector and an R/RE mode pattern for one-beam push-pull method and a ROM mode pattern for differential phase detection (DPD) method can be selected only changing the applied voltage. The newly developed system can derive one-beam push-pull signal, DPD signal, wobble signal and RF signal from the output only from five common photo detectors. Sufficient quality of these signals is experimentally confirmed. The one-beam push-pull signal is hardly affected by the stray light from other layers. The traversing noise of its focusing error signal is stably low even with high push-pull media and possibly large astigmatism. Its focusing error signal turns out to be much more stable and less influenced by groove traverses. In addition, we present a vision for next-generation slim and compact integrated optics with dual LC cells, which consist of the LC attenuator, laser noise reduction technology, and the LC mode selector, as explained above.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116678212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Aiba, S. Kawakita, J. Sato, K. Kanno, T. Yamada
We have developed an objective lens which can be used for different optical disk formats -Blu-ray Disc, DVD and CD. The compatible technique is based on the diffraction characteristics optimized by tuning refractive index dispersion. This optical configuration can provide suitable designs for optical pick-up system of high speed recording.
{"title":"BD/DVD/CD Compatible Objective Lens","authors":"M. Aiba, S. Kawakita, J. Sato, K. Kanno, T. Yamada","doi":"10.1117/12.692305","DOIUrl":"https://doi.org/10.1117/12.692305","url":null,"abstract":"We have developed an objective lens which can be used for different optical disk formats -Blu-ray Disc, DVD and CD. The compatible technique is based on the diffraction characteristics optimized by tuning refractive index dispersion. This optical configuration can provide suitable designs for optical pick-up system of high speed recording.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123516581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two-dimensional intersymbol interference channels are models for two-dimensional optical storage and holographic recording systems. We describe analytical bounds and simulation-output estimates for achievable rates of such channels, as well as signal processing and coding algorithms that approach these information-theoretic limits
{"title":"Information-Theoretic Limits of Two-Dimensional Optical Recording Channels","authors":"P. Siegel","doi":"10.1117/12.685223","DOIUrl":"https://doi.org/10.1117/12.685223","url":null,"abstract":"Two-dimensional intersymbol interference channels are models for two-dimensional optical storage and holographic recording systems. We describe analytical bounds and simulation-output estimates for achievable rates of such channels, as well as signal processing and coding algorithms that approach these information-theoretic limits","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130417365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-06-05DOI: 10.1109/ODS.2006.1632741
H. Miura, N. Iwata, N. Toyoshima, Y. Hayashi, K. Takeuchi, T. Mori, I. Hirosawa
A tetrahedral network structure like ZnS crystal is found to exist in the amorphous ZnS-SiO2 thin film. It is considered that the etching selectivity in as-deposited and annealed ZnS-SiO2 thin film becomes large due to the growth of ZnS crystals by annealing. There is optimum mixture rate of ZnS for patterning of Zns-SiO2 thin film by the heat-mode lithography, and the ZnS-SiO2 dots with clear and smooth edges were formed with increasing in the ZnS mixture rate to 80%
{"title":"Structure Analysis of ZnS-SiO2 Thin Film and Patterning by Heat-Mode Lithography","authors":"H. Miura, N. Iwata, N. Toyoshima, Y. Hayashi, K. Takeuchi, T. Mori, I. Hirosawa","doi":"10.1109/ODS.2006.1632741","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632741","url":null,"abstract":"A tetrahedral network structure like ZnS crystal is found to exist in the amorphous ZnS-SiO2 thin film. It is considered that the etching selectivity in as-deposited and annealed ZnS-SiO2 thin film becomes large due to the growth of ZnS crystals by annealing. There is optimum mixture rate of ZnS for patterning of Zns-SiO2 thin film by the heat-mode lithography, and the ZnS-SiO2 dots with clear and smooth edges were formed with increasing in the ZnS mixture rate to 80%","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131503755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-06-05DOI: 10.1109/ODS.2006.1632770
A. Hoskins, A. Hill, B. Sissom, C. Stanhope, K. Curtis
A strategy for finding the readout wavelength to compensate for temperature changes in holographic media is presented. Theory and experimental results for a 12 degC change at a data density of 95 Gbit/in2 are demonstrated
{"title":"Temperature Compensation Strategy for Holographic Storage","authors":"A. Hoskins, A. Hill, B. Sissom, C. Stanhope, K. Curtis","doi":"10.1109/ODS.2006.1632770","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632770","url":null,"abstract":"A strategy for finding the readout wavelength to compensate for temperature changes in holographic media is presented. Theory and experimental results for a 12 degC change at a data density of 95 Gbit/in2 are demonstrated","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131373062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Tanaka, K. Sano, K. Matsumura, H. Wada, K. Matsuzaki, K. Wakabayashi, Y. Komma
An ordinary half-height size optical pickup with high light-use efficiency for Blu-ray Discs (BDs) has been realized. It has two objective lenses arranged tangentially. Although one of the objective lenses, BD objective lens, does not follow the line that passes thorough the center of the spindle motor, stable tracking-error detection has been achieved by enhancing a one-beam method. This pickup has a beam shaper which changes a divergent angle of light with high magnification. Although beam shapers are sensitive to a positional error, our pickup accomplished stable positioning by introducing a new structure.
{"title":"Optical Pickup for Recording to Dual-Layer 2x-Speed Blu-Ray Disc, DVD and Compact Disc","authors":"T. Tanaka, K. Sano, K. Matsumura, H. Wada, K. Matsuzaki, K. Wakabayashi, Y. Komma","doi":"10.1117/12.692279","DOIUrl":"https://doi.org/10.1117/12.692279","url":null,"abstract":"An ordinary half-height size optical pickup with high light-use efficiency for Blu-ray Discs (BDs) has been realized. It has two objective lenses arranged tangentially. Although one of the objective lenses, BD objective lens, does not follow the line that passes thorough the center of the spindle motor, stable tracking-error detection has been achieved by enhancing a one-beam method. This pickup has a beam shaper which changes a divergent angle of light with high magnification. Although beam shapers are sensitive to a positional error, our pickup accomplished stable positioning by introducing a new structure.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127006119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Mishima, D. Yoshitoku, H. Itoh, S. Yamatsu, H. Inoue, T. Komaki, K. Tanaka, T. Aoi
This report is on a 50 GB 6-layer write once disc with the newly developed recording materials for blu-ray disc system. We achieved the optimum recording powers and the jitter values less than 160 mW and 8.0% for each layer at the user data recording rate of 72 Mbps. This result shows feasibility of realization of 6-layered recordable blu-ray disc
{"title":"150 GB, 6-Layer Write Once Disc for Blu-ray Disc System","authors":"K. Mishima, D. Yoshitoku, H. Itoh, S. Yamatsu, H. Inoue, T. Komaki, K. Tanaka, T. Aoi","doi":"10.1117/12.685207","DOIUrl":"https://doi.org/10.1117/12.685207","url":null,"abstract":"This report is on a 50 GB 6-layer write once disc with the newly developed recording materials for blu-ray disc system. We achieved the optimum recording powers and the jitter values less than 160 mW and 8.0% for each layer at the user data recording rate of 72 Mbps. This result shows feasibility of realization of 6-layered recordable blu-ray disc","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124806871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-06-05DOI: 10.1109/ODS.2006.1632742
M. Ayres, R. McLeod
Index modulation patterns constituting volumetric optical memories are quantitatively measured with a novel scanning microscope. The instrument uses a PSD to provide phase sensitivity and achieves confocal-like depth selectivity in transmission without a pinhole
{"title":"Volumetric Phase Metrology for Optical Data Storage","authors":"M. Ayres, R. McLeod","doi":"10.1109/ODS.2006.1632742","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632742","url":null,"abstract":"Index modulation patterns constituting volumetric optical memories are quantitatively measured with a novel scanning microscope. The instrument uses a PSD to provide phase sensitivity and achieves confocal-like depth selectivity in transmission without a pinhole","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127550739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-06-05DOI: 10.1109/ODS.2006.1632760
K. Saito, S. Kobayashi
In a volumetric optical disc medium, two counter-propagating light beams focusing to the same point create a diffraction-limited size micro-reflector. We propose a single-sided optical layout for a three-dimensional optical disc recording system using the micro-reflectors. Calculation results of readout signal characteristics, estimation of interlayer crosstalk noise, and recording capacity of micro-reflector three-dimensional optical disc recording are described
{"title":"Analysis of Micro-Reflector 3-D Optical Disc Recording","authors":"K. Saito, S. Kobayashi","doi":"10.1109/ODS.2006.1632760","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632760","url":null,"abstract":"In a volumetric optical disc medium, two counter-propagating light beams focusing to the same point create a diffraction-limited size micro-reflector. We propose a single-sided optical layout for a three-dimensional optical disc recording system using the micro-reflectors. Calculation results of readout signal characteristics, estimation of interlayer crosstalk noise, and recording capacity of micro-reflector three-dimensional optical disc recording are described","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124655727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-06-05DOI: 10.1109/ODS.2006.1632725
T. C. Chong, L. P. Shi, X. Miao, P. K. Tan, X. Hu, J.M. Li
In this paper, the superlattice-like structure is proposed as a candidate for multi-speed blu-ray disc, the materials in superlattice-like recording layer are studied and the multi-speed recording properties of superlattice-like blu-ray discs are demonstrated
{"title":"Multi-Speed Blu-ray Disc with Superlattice-like Structure","authors":"T. C. Chong, L. P. Shi, X. Miao, P. K. Tan, X. Hu, J.M. Li","doi":"10.1109/ODS.2006.1632725","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632725","url":null,"abstract":"In this paper, the superlattice-like structure is proposed as a candidate for multi-speed blu-ray disc, the materials in superlattice-like recording layer are studied and the multi-speed recording properties of superlattice-like blu-ray discs are demonstrated","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116564241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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