Material Consumption and Crosstalk Characteristics of Different Holographic Storage Concepts

Przygodda, Frank; Knittel, Joachim; Malki, Oliver; Trautner, H.; Richter, Hartmut

doi:10.1143/jjap.48.03a024

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Reflectiontype holographic memory has advantages for the collinear setup with the transmission-type geometry in terms of material consumption and crosstalk noise characteristics. 9,10) Recently, a microhologram as a reflection-type hologram was investigated for volumetric bit-oriented memory. 11,12) The storage capacity of the reflection-type holographic memory system with speckle shift multiplexing is derived numerically using a holographic memory simulator on the basis of scalar diffraction theory.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing

Matoba

Yonetani

Nitta

2011

Jpn. J. Appl. Phys.

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We study gauge threshold corrections for systems of fractional branes at local orientifold singularities and compare with the general Kaplunovsky-Louis expression for locally supersymmetric N = 1 gauge theories. We focus on branes at orientifolds of the C 3 /Z 4 , C 3 /Z 6 and C 3 /Z ′ 6 singularities. We provide a CFT construction of these theories and compute the threshold corrections. Gauge coupling running undergoes two phases: one phase running from the bulk winding scale to the string scale, and a second phase running from the string scale to the infrared. The first phase is associated to the contribution of N = 2 sectors to the IR β functions and the second phase to the contribution of both N = 1 and N = 2 sectors. In contrast, naive application of the Kaplunovsky-Louis formula gives single running from the bulk winding mode scale. The discrepancy is resolved through 1-loop non-universality of the holomorphic gauge couplings at the singularity, induced by a 1-loop redefinition of the twisted blow-up moduli which couple differently to different gauge nodes. We also study the physics of anomalous and non-anomalous U(1)s and give a CFT description of how masses for non-anomalous U(1)s depend on the global properties of cycles.

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Section: Introductionmentioning

confidence: 99%

Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing

Matoba

Yonetani

Nitta

2011

Jpn. J. Appl. Phys.

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“…The investigation of the optic concept and search for suitable materials are the foci of the current research in the field of holographic data storage. 1) Nevertheless, a well-designed data detection method, that is, the data processing from creating, sending, receiving, and identifying stored data, is one of the key components for a suitable page-oriented holographic data storage system (HDSS). 4) The main objective of using this data detection method is to increase the data capacity while simultaneously keeping robust and high-speed data processing.…”

Section: Introductionmentioning

confidence: 99%

Data Detection Methods for Holographic Data Storage Systems

Malki¹,

Przygodda²,

Trautner³

et al. 2010

Jpn. J. Appl. Phys.

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We suggest a new method for data detection based on direct data identification and compare this new method with three commonly used methods based on decimation using linear transformations. To compare these methods, the complete procedure from data page creation, sending data through an optical channel, and data detection is simulated numerically. This is performed by varying the noise level, sampling factor, and spatial filter. The proposed method requires a higher computational complexity, but for a broad range of realistic system parameters, it enables lower symbol error ratios.

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Special phase mask and related data format for page-based holographic data storage systems

Przygodda¹,

Knittel²,

Malki³

et al. 2009

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Material Consumption and Crosstalk Characteristics of Different Holographic Storage Concepts

Cited by 4 publications

References 10 publications

Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing

Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing

Data Detection Methods for Holographic Data Storage Systems

Special phase mask and related data format for page-based holographic data storage systems

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