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Characteristics of Magneto-Optical Disk with Media Sandwiched between Protective Layers 介质夹在保护层之间的磁光盘特性
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1985.tubb3
H. Kawabata, K. Yamamoto, M. Birukawa, N. Miyatake, T. Shimizu, M. Fukai
{"title":"Characteristics of Magneto-Optical Disk with Media Sandwiched between Protective Layers","authors":"H. Kawabata, K. Yamamoto, M. Birukawa, N. Miyatake, T. Shimizu, M. Fukai","doi":"10.1364/ods.1985.tubb3","DOIUrl":"https://doi.org/10.1364/ods.1985.tubb3","url":null,"abstract":"RE-TM amorphous ferri-magnetic film, a magneto-optical (M-O) material (1~3), is the promising erasable optical mass memory medium. Compared with other erasable optical memory materials, the film offers particularly excellent erasability, as proven by repeated recording, reading and erasing over 107 times without measurable degradation (4).","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"103 32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115706710","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}
引用次数: 0
Drive Issues for High Performance Magneto-optic Recording 高性能磁光记录的驱动问题
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1987.wa1
D. Campbell
{"title":"Drive Issues for High Performance Magneto-optic Recording","authors":"D. Campbell","doi":"10.1364/ods.1987.wa1","DOIUrl":"https://doi.org/10.1364/ods.1987.wa1","url":null,"abstract":"In recent years much research has been directed towards developing magneto-optic recording technology, and in assessing its competitiveness in the computer data storage market. High areal density, removable media, reliability, and projected manufacturing costs make magneto-optic drives a very interesting mass storage alternative. However many drive designs have focused on only the above attributes, ignoring performance, thereby developing \"slow\" magneto-optic drives. Magneto-optic drives will certainly be more competitive if they are designed with equal or greater performance than comparably priced, comparable capacity, Winchester drives. This paper will examine the tradeoffs necessary to develop high performance magneto-optic drives. Design procedures for the read/write optics, media, modulation codes, formats, servo optics, and servo/seek mechanism and control, will be examined.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124184213","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}
引用次数: 0
The Effect of Incubation on the Performance of Laminated-Disk Assemblies 孵育对层压板组件性能的影响
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1984.thcb3
H. W. Altland, J. Wrobel, John W. Boettcher, David B. Kay
{"title":"The Effect of Incubation on the Performance of Laminated-Disk Assemblies","authors":"H. W. Altland, J. Wrobel, John W. Boettcher, David B. Kay","doi":"10.1364/ods.1984.thcb3","DOIUrl":"https://doi.org/10.1364/ods.1984.thcb3","url":null,"abstract":"The effect of incubation on optical disk assemblies consisting of an infrared-sensitive organic recording layer spin-coated onto a smoothed and metallized glass substrate was discussed at the SPIE meeting in Arlington, Virginia. Excellent recorded information stability and recordability were reported for these disks after eight weeks at various incubation conditions. The configuration of the laminated disk assembly (LDA) was also discussed at that meeting; it consists of a coated plastic recording sheet laminated with an adhesive to a rigid aluminum substrate. In this summary, the effects of sixteen weeks of incubation at various temperature/humidity conditions on the performance characteristics of LDA's are discussed. Thirty-two week performance data will be presented at the April 1984 Topical Meeting on Optical Data Storage. The incubation conditions are listed in Table I.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116840392","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}
引用次数: 1
A 5 1/4″ Optical Digital Data Storage Drive 一个5 1/4″光数字数据存储驱动器
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1985.wcc2
D. Chen, N. Yew
{"title":"A 5 1/4″ Optical Digital Data Storage Drive","authors":"D. Chen, N. Yew","doi":"10.1364/ods.1985.wcc2","DOIUrl":"https://doi.org/10.1364/ods.1985.wcc2","url":null,"abstract":"A number of Optical Digital data storage devices were introduced in recent years. Most of these devices use a 12\" diameter write-once-read-mostly (WORM) optical disk with a capacity around 1 GByte per disk side. These devices are aimed at the high end of data storage hierarchy, and larger capacity is also necessary to bring the cost per bit to a reasonable value when the cost of laser and optics are high at the early stage of development. Much progress has been made in the past two years. The success of laser diode based compact audio disk players in the market place has changed this situation dramatically. It is now economically feasible to produce optical digital recording devices with a formfactor of a 5 1/4\" Winchester drive, using a 130 mm diameter WORM disk, to store 200 MByte/side, and compete favorably with existing magnetic recording devices on a cost per bit basis.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117185241","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}
引用次数: 0
Digital Magneto-Optic Storage System 数字磁光存储系统
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1983.tha2
I. Sander
{"title":"Digital Magneto-Optic Storage System","authors":"I. Sander","doi":"10.1364/ods.1983.tha2","DOIUrl":"https://doi.org/10.1364/ods.1983.tha2","url":null,"abstract":"A small - potentially low-cost - magneto-optic digital recorder with up to 10 MByte of erasable storage capacity on a 50-mm (2\") disk has been investigated as an alternative to the well-known floppy disk or Winchester digital storage systems.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124864370","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}
引用次数: 1
Voltage-tunable optical data storage using persistent spectral hole burning 使用持续光谱烧孔的电压可调光学数据存储
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1985.wbb2
U. Bogner, K. Beck, P. Schätz, M. Maier
{"title":"Voltage-tunable optical data storage using persistent spectral hole burning","authors":"U. Bogner, K. Beck, P. Schätz, M. Maier","doi":"10.1364/ods.1985.wbb2","DOIUrl":"https://doi.org/10.1364/ods.1985.wbb2","url":null,"abstract":"The use of persistent spectral hole burning in optical data storage allows an increase of the storage density up to a factor of 1000 compared to the common spatial matrix of optical bits.1 The information is stored by burning at low temperature a sequence of narrow spectral holes in the inhomogeneously broadened optical transition of optical centers, e.g. dye molecules embedded in an amorphous polymer, with a tunable narrow-bandwidth laser. One bit of information is encoded by the presence or absence of a hole at a given location in frequency space. The information is read by observing the absorption or the fluorescence of the storage material using a laser with tunable frequency. One of the problems of spectral hole burning data storage arises from the fact that for addressing the memory locations the laser frequency has to be changed over a large frequency range with high accuracy and speed.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128397150","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}
引用次数: 0
System for Dynamic Testing of Optical Storage Media Pit Formation 光存储介质凹坑形成动态测试系统
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1983.wb6
R. Barnes
{"title":"System for Dynamic Testing of Optical Storage Media Pit Formation","authors":"R. Barnes","doi":"10.1364/ods.1983.wb6","DOIUrl":"https://doi.org/10.1364/ods.1983.wb6","url":null,"abstract":"When working with optical storage material, the large field of data poses two problems: 1) writing the hole or pit with a singular set of controlled parameters; and 2) correlating this pit to the analysis system. The pit formation and analysis need to be simultaneous or nearly real-time. The intent of this apparatus was to bring together a large variety of adjustable parameters and the ability to analyze them such that, as the pits are formed, we can evaluate the results and immediately compensate the pit formation system in order to optimize or evaluate a given media. The system was assembled using a large multi-port testbed.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126725007","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}
引用次数: 0
Optical Disk Digital Memory System 光盘数字存储系统
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1984.wca3
Y. Ichiyama, A. Imamura, T. Koi, I. Kishinoue
{"title":"Optical Disk Digital Memory System","authors":"Y. Ichiyama, A. Imamura, T. Koi, I. Kishinoue","doi":"10.1364/ods.1984.wca3","DOIUrl":"https://doi.org/10.1364/ods.1984.wca3","url":null,"abstract":"An optical disk has many attractive features. A mass filing capacity, low bit cost memory capability, and data archivability has now become realized in a nonerasable coded data file.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126735038","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}
引用次数: 0
Determination of Magneto Optical Constants from Multilayer Film Structures 多层膜结构磁光常数的测定
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1984.thcc5
G. J. Sprokel
{"title":"Determination of Magneto Optical Constants from Multilayer Film Structures","authors":"G. J. Sprokel","doi":"10.1364/ods.1984.thcc5","DOIUrl":"https://doi.org/10.1364/ods.1984.thcc5","url":null,"abstract":"A matrix relation is derived for the incident, reflected and transmitted wave vectors for a multilayer stack containing a magneto optic layer. The principle of the method is discussed in many textbooks. However, the dielectric function of a magneto optic medium is a 4th order equation and the resulting matrix is a complex 4 × 4 matrix. Here, the matrix is formulated without approximations and its properties are evaluated numerically.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125138413","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}
引用次数: 0
Magneto-Optic Compensator for MO Disk Substrate Birefringence MO光盘衬底双折射磁光补偿器
Topical Meeting on Optical Data Storage Pub Date : 1900-01-01 DOI: 10.1364/ods.1987.wb3
J. Revelli, Stuart Perry, D. Stinson
{"title":"Magneto-Optic Compensator for MO Disk Substrate Birefringence","authors":"J. Revelli, Stuart Perry, D. Stinson","doi":"10.1364/ods.1987.wb3","DOIUrl":"https://doi.org/10.1364/ods.1987.wb3","url":null,"abstract":"Injection-molding techniques employed in the fabrication of polymer substrates used in magneto-optic disks introduce stress-induced birefringence. This birefringence, which varies from point to point on the disk, results in a low-frequency noise component to the signal available in the detection of magneto-optically stored data. This paper describes a method, based on the use of a variable-angle Faraday rotator, for compensating for the substrate birefringence. It should be pointed out that the following method is predicated on the assumptions that a) vertical birefingence can be ignored, and b) the in-plane birefringence axes are oriented along the disk radial and tangential axes at each point on the disk. Although it is realized that the vertical birefringence component cannot in general be ignored,1 the compensation presently described should improve the signal-to-noise ratio.","PeriodicalId":268493,"journal":{"name":"Topical Meeting on Optical Data Storage","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132616590","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}
引用次数: 0
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