Xuegong Deng, Xiaoming Liu, P. Sciortino, J.J. Wang, A. Nikolov, Feng Liu, Lei Chen, S. Fiorillo, N. O'Brien
We design and fabricate polarization-dependent components (PDCs) based on all-dielectric, fully planarized, multilayer microstructures of 150 nm period by using low-loss materials. Quarter-wave and half-wave phase plates at 405 nm are presented. Multifunction integrated diffractive PDCs are discussed
{"title":"Composite Microstructures for Optical Data Storage","authors":"Xuegong Deng, Xiaoming Liu, P. Sciortino, J.J. Wang, A. Nikolov, Feng Liu, Lei Chen, S. Fiorillo, N. O'Brien","doi":"10.1117/12.685166","DOIUrl":"https://doi.org/10.1117/12.685166","url":null,"abstract":"We design and fabricate polarization-dependent components (PDCs) based on all-dielectric, fully planarized, multilayer microstructures of 150 nm period by using low-loss materials. Quarter-wave and half-wave phase plates at 405 nm are presented. Multifunction integrated diffractive PDCs are discussed","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"65 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":"122807288","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. Shimura, Shotaro Ichimura, Yasushi Ashizuka, R. Fujimura, K. Kuroda, Xiaodi Tan, H. Horimai
A numerical simulations of the signal decay with media shift were performed. Shift selectivity of the page did not depend on the media thickness, but mainly determined by the width of the reference pixel area
{"title":"Shift Selectivity of the Collinear Holographic Storage System","authors":"T. Shimura, Shotaro Ichimura, Yasushi Ashizuka, R. Fujimura, K. Kuroda, Xiaodi Tan, H. Horimai","doi":"10.1117/12.685218","DOIUrl":"https://doi.org/10.1117/12.685218","url":null,"abstract":"A numerical simulations of the signal decay with media shift were performed. Shift selectivity of the page did not depend on the media thickness, but mainly determined by the width of the reference pixel area","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"31 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":"131639308","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.2006.1632731
Sam-nyol Hong, Hyo-kune Hwang, ln-ho Choi, Eul-scok Ko, Jin-yong Kim
This paper is about designing a reliable actuator of a high-density und high-speed optical disk drive. The higher density the disk has and the faster spinning speed the disk drive has. the more power to its coils the actuator needs because the actuator is required to cope with higher servo bandwidth. This may cause a reliability problem by conducting excessive heat to its objective lens. In this study, the factors affecting on the temperature of the lens were found through numerical simulations and experiments. Design modification and amelioration has been successfully applied under design constraints
{"title":"Thermal Analysis of an Optical Pickup Actuator","authors":"Sam-nyol Hong, Hyo-kune Hwang, ln-ho Choi, Eul-scok Ko, Jin-yong Kim","doi":"10.1109/ODS.2006.1632731","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632731","url":null,"abstract":"This paper is about designing a reliable actuator of a high-density und high-speed optical disk drive. The higher density the disk has and the faster spinning speed the disk drive has. the more power to its coils the actuator needs because the actuator is required to cope with higher servo bandwidth. This may cause a reliability problem by conducting excessive heat to its objective lens. In this study, the factors affecting on the temperature of the lens were found through numerical simulations and experiments. Design modification and amelioration has been successfully applied under design constraints","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"2 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":"128049467","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.2006.1632715
N. Kitazaki, M. Igarashi, H. Matsuda, M. Kinoshita, Y. Kaneko, Y. Sakai, J. Li, T. Sasada, M. Matsmoto, S. Yoshino, M. Kakinuma, H. Narumi, A. Kawamura, K. Suzuki, Y. Tsunikawa, K. Mizunoe, X. Tan, H. Horimai
Holographic versatile disc (HVDtrade) evaluation system based on Collineartrade Technology, which is used to evaluate a rotating HVDtrade, is proposed. This system can easily be used to evaluate the specification of media or HVDtrade drive system
{"title":"Demonstration of On-the-fly Recording on HVD","authors":"N. Kitazaki, M. Igarashi, H. Matsuda, M. Kinoshita, Y. Kaneko, Y. Sakai, J. Li, T. Sasada, M. Matsmoto, S. Yoshino, M. Kakinuma, H. Narumi, A. Kawamura, K. Suzuki, Y. Tsunikawa, K. Mizunoe, X. Tan, H. Horimai","doi":"10.1109/ODS.2006.1632715","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632715","url":null,"abstract":"Holographic versatile disc (HVDtrade) evaluation system based on Collineartrade Technology, which is used to evaluate a rotating HVDtrade, is proposed. This system can easily be used to evaluate the specification of media or HVDtrade drive system","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"69 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":"133652176","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}
Multi-level run-length-limited (ML-RLL) modulation on optical storage channels is a promising method to increase the recording density effectively. In this paper, some experimental results of 4-level RLL modulation on digital versatile disc (DVD) read-only discs are firstly presented. A new DC-free 4-ary RLL (2.8) code with code rate of 8/10 (bits/symbol) is designed, and partial-response maximum-likelihood (PRML) detection is used to evaluate the bit error rate (BER) performance of multi-level readout signals. Experimental and simulation results show the feasibility of 4-level RLL modulation on DVD channels
{"title":"Modulation Code and PRML Detection for Multi-Level Run-Length-Limited DVD Channels","authors":"Hua Hu, Duanyi Xu, L. Fan","doi":"10.1117/12.685200","DOIUrl":"https://doi.org/10.1117/12.685200","url":null,"abstract":"Multi-level run-length-limited (ML-RLL) modulation on optical storage channels is a promising method to increase the recording density effectively. In this paper, some experimental results of 4-level RLL modulation on digital versatile disc (DVD) read-only discs are firstly presented. A new DC-free 4-ary RLL (2.8) code with code rate of 8/10 (bits/symbol) is designed, and partial-response maximum-likelihood (PRML) detection is used to evaluate the bit error rate (BER) performance of multi-level readout signals. Experimental and simulation results show the feasibility of 4-level RLL modulation on DVD channels","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"85 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":"116690550","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}
We propose a new concept of flat moving coil type actuator designed for the application of 5mm height small form factor optical drive. The prototype of the actuator and optical platform is realized. The trend of the optical data storage is increase of the disk capacity and the miniature of the disk drive. The state-of-the-art of the optical disk drive for mobile application is in great demand (1). The thickness limitation of the drive and the actuator is the main challenge for such application (2, 3). In this paper, we propose a flat actuator that can be employed in the small form factor optical disk drive with 5mm height limitation. 2. Actuator configuration The configuration of the proposed actuator, which is a four-wire moving-coil type actuator, is shown in Figure 1. The moving coil type actuator has the advantage of lightweight and high DC sensitivity. And we use the FP coil (fine pattern coil) instead of winding coil for the benefit of easy assembly and flat shape. Two focusing coils and two tracking coils are integrated into single FP coil. Two multi-segment magnets pair are arranged to the top and bottom of the FP coil. Here, we use several unitary magnets to confirm the feasibility of our design as shown in Figure 2. This kind of arrangement helps to create a thinner actuator. When apply the driving current, the Lorenz force propel the actuator in the focusing and tracking direction separately. The size of the actuator is 12.6 × 8.0 × 2.6mm. The thickness of the actuator can be further decreased by the available of thinner magnets. The traveling range of the actuator is 0.4mm (P-P) in focusing direction and 0.2mm (P-P) in tracking direction.
{"title":"A New Type Flat Moving-Coil Actuator for Small Form Factor Optical Disk Drive","authors":"Pei-Ching Kuo, Sheng-Fa Hou, Yueh-Lin Lee, Cheng Liao","doi":"10.1109/ODS.2006.1632734","DOIUrl":"https://doi.org/10.1109/ODS.2006.1632734","url":null,"abstract":"We propose a new concept of flat moving coil type actuator designed for the application of 5mm height small form factor optical drive. The prototype of the actuator and optical platform is realized. The trend of the optical data storage is increase of the disk capacity and the miniature of the disk drive. The state-of-the-art of the optical disk drive for mobile application is in great demand (1). The thickness limitation of the drive and the actuator is the main challenge for such application (2, 3). In this paper, we propose a flat actuator that can be employed in the small form factor optical disk drive with 5mm height limitation. 2. Actuator configuration The configuration of the proposed actuator, which is a four-wire moving-coil type actuator, is shown in Figure 1. The moving coil type actuator has the advantage of lightweight and high DC sensitivity. And we use the FP coil (fine pattern coil) instead of winding coil for the benefit of easy assembly and flat shape. Two focusing coils and two tracking coils are integrated into single FP coil. Two multi-segment magnets pair are arranged to the top and bottom of the FP coil. Here, we use several unitary magnets to confirm the feasibility of our design as shown in Figure 2. This kind of arrangement helps to create a thinner actuator. When apply the driving current, the Lorenz force propel the actuator in the focusing and tracking direction separately. The size of the actuator is 12.6 × 8.0 × 2.6mm. The thickness of the actuator can be further decreased by the available of thinner magnets. The traveling range of the actuator is 0.4mm (P-P) in focusing direction and 0.2mm (P-P) in tracking direction.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"74 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":"123217117","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}
When the multi-layer disc is read by a normal optical pickup, the signal light that is reflected in the read-out layer contains stray light from the adjacent recording layers, which is called the layer cross-talk (LCT). To reduce the LCT, we developed a new optical pickup that has a segmented wave-plate made of an auto-cloned photonic crystal. It has some advantages of perfect removal of LCT, detection of the high efficiency of the signal light, and the miniaturization of the optical pickup. In addition, by using this optical pickup, we confirmed the improvement of the signal performance, using a HD DVD dual-layer disc that has a thin spacer layer thickness, to increase the LCT.
{"title":"Novel Read-Out Technology for Multi-Layer Disk using Polarization Device","authors":"T. Ogata, T. Kawashima","doi":"10.1117/12.685170","DOIUrl":"https://doi.org/10.1117/12.685170","url":null,"abstract":"When the multi-layer disc is read by a normal optical pickup, the signal light that is reflected in the read-out layer contains stray light from the adjacent recording layers, which is called the layer cross-talk (LCT). To reduce the LCT, we developed a new optical pickup that has a segmented wave-plate made of an auto-cloned photonic crystal. It has some advantages of perfect removal of LCT, detection of the high efficiency of the signal light, and the miniaturization of the optical pickup. In addition, by using this optical pickup, we confirmed the improvement of the signal performance, using a HD DVD dual-layer disc that has a thin spacer layer thickness, to increase the LCT.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"62 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":"121445546","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}
J. Pichon, R. Anciant, J. Bruneau, M. des Rieux, B. Hyot, S. Gidon, M. Armand, L. Poupinet
We propose a multiphysics model of super-resolution BD ROM disk readout based on the photogeneration of free carriers in the active layer to retrieve far-field signal from pits smaller than the resolution limit
{"title":"Multiphysics Simulation of Super-Resolution BD ROM Optical Disk Readout","authors":"J. Pichon, R. Anciant, J. Bruneau, M. des Rieux, B. Hyot, S. Gidon, M. Armand, L. Poupinet","doi":"10.1117/12.685239","DOIUrl":"https://doi.org/10.1117/12.685239","url":null,"abstract":"We propose a multiphysics model of super-resolution BD ROM disk readout based on the photogeneration of free carriers in the active layer to retrieve far-field signal from pits smaller than the resolution limit","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"17 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":"125414613","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}
A folded solid immersion mirror for heat assisted magnetic recording was designed. The key components were fabricated and tested. By separating the incident light and reflected light with a directional coupler, high numerical aperture focusing can be achieved with small side lobes and high energy efficiency.
{"title":"Stacked Planar Solid Immersion Mirror","authors":"L. Zhou, J. Bain, T. E. Schlesinger","doi":"10.1117/12.685168","DOIUrl":"https://doi.org/10.1117/12.685168","url":null,"abstract":"A folded solid immersion mirror for heat assisted magnetic recording was designed. The key components were fabricated and tested. By separating the incident light and reflected light with a directional coupler, high numerical aperture focusing can be achieved with small side lobes and high energy efficiency.","PeriodicalId":332569,"journal":{"name":"2006 Optical Data Storage Topical Meeting","volume":"26 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":"130594345","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}
A new radial tilt adjustment method with a partial response signal-to-noise ratio in HD DVD is described. This method can adjust the radial tilt rapidly because it monitors a parameter with polarity related to the radial tilt deviation. The accuracy of the method is plusmn 0.02 deg, which is enough for HD DVD systems
{"title":"Radial Tilt Adjustment Method with Partial Response Signal-to-Noise Ratio in High-Density Optical Recording","authors":"T. Ichimura, Masatsugu Ogawa, T. Iwanaga","doi":"10.1117/12.685226","DOIUrl":"https://doi.org/10.1117/12.685226","url":null,"abstract":"A new radial tilt adjustment method with a partial response signal-to-noise ratio in HD DVD is described. This method can adjust the radial tilt rapidly because it monitors a parameter with polarity related to the radial tilt deviation. The accuracy of the method is plusmn 0.02 deg, which is enough for HD DVD systems","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":"131166916","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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