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Six-dimensional high-density information storage method

An information storage, high-density technology, applied in the field of optical information storage, to achieve the effect of breaking through the storage capacity

Active Publication Date: 2020-06-05
JINAN UNIVERSITY
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  • Description
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  • Application Information

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Problems solved by technology

However, the existing five-dimensional optical storage technology can only interact with the storage medium through the wavelength and polarization of the reading and writing laser in the same storage location, and its storage dimension and storage path are at a bottleneck stage

Method used

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  • Six-dimensional high-density information storage method
  • Six-dimensional high-density information storage method

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Embodiment 1

[0067] The coupling strength between gold nanorods largely changes the light absorption properties of optical storage media. Under certain conditions, the long-axis dipole mode of gold nanorods will produce constructive interference in the near field to form an electromagnetic field energy hotspot. Using the vector light field at the focal spot of Laguerre-Gaussian beams with different orbital angular momentum (topological charge), different wavelengths and different polarizations can selectively excite electromagnetic energy hotspots at specific spatial locations, expanding the interaction between light and matter. Dimensions and regulatory freedom.

[0068] see image 3 , image 3 It is a schematic diagram of the structure of 10*10 gold nanorod arrays of the same size, image 3 The model structure shown is a simplified computational model to study the effect of the coupling strength between adjacent gold nanorods in a memory cell on the interaction characteristics of a fo...

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Abstract

According to a six-dimensional high-density information storage method provided by the invention, Laguerre-Gaussian beam orbital angular momentum and the radial wave node number generate electromagnetic energy hot spots which are not overlapped spatially in the disordered gold nanorod system; namely, a quasi-orthogonal local area mode is excited; therefore, the physical dimension of information storage multiplexing is increased; meanwhile, the number of channels utilizing the orbital angular momentum is infinite in theory; According to the technical principle that the number of storage channels can be greatly increased based on the physical dimension and the technical principle that multiplexing based on the orbital angular momentum of the light beam can be achieved in the same read-writefocal spot as wavelength multiplexing storage, polarization multiplexing storage and spatial multiplexing storage at the same time are adopted, so that the limit of the storage capacity of a conventional five-dimensional optical information storage technology is broken through.

Description

technical field [0001] The invention relates to the technical field of optical information storage, in particular to a six-dimensional high-density information storage method. Background technique [0002] In the 21st century, when human beings enter the information society, the knowledge economy has become a powerful driving force for promoting social progress and scientific and technological development. Information storage, transmission and processing are one of the most important guarantees for improving the overall development level of society. Due to the multimediaization of information, people now need to deal with moving images and high-definition images. IDC predicts that the total amount of global data will increase by 50 times by 2020, and the demand for data storage will increase by more than 50 times. Facing the 21st century, people urgently need to consider how to effectively store and manage more and more data and how to apply these data. The increasingly cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B13/06
CPCG11B13/06
Inventor 徐毅欧阳旭李向平曹耀宇
Owner JINAN UNIVERSITY
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