Multi-dimensional optical storage method using polyacrylonitrile as optical storage medium

An optical storage medium, polyacrylonitrile technology, applied in the field of optical storage, can solve problems such as high power consumption, large power consumption, and large space occupation, and achieve the effect of reducing performance requirements, system costs, and performance requirements

Pending Publication Date: 2022-04-01

HUAZHONG UNIV OF SCI & TECH

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AI-Extracted Technical Summary

Problems solved by technology

Using existing technology to store these data will bring two major problems: one is extremely high power consumption, and common hard drives need to consume a lot of power during use. 140 billion kWh, equivalent to 1/3 of the UK's annual power generation in 2013

The second is that it takes up a lot of space. The unit storage density of existing storage technologies is low. If Blu-ray discs are used to store 175ZB of data, they can be stacked to circle the earth 222 times.

However, due to the high processing threshold of fused silica, multi-dimensional optical storage systems ba...

Method used

The sample is a polyacrylonitrile film or a polyacrylonitrile disc, and the femtosecond laser pulse can be used to generate anisotropic structure at any position inside the material by utilizing th...

Abstract

The invention belongs to the field of optical storage, and discloses a multi-dimensional optical storage method using polyacrylonitrile as an optical storage medium, and the polyacrylonitrile can be used as the optical storage medium. According to the invention, polyacrylonitrile is used as an optical storage medium for optical storage for the first time, and when storage data is written into polyacrylonitrile, the required laser energy is obviously lower than the energy required by fused quartz processing, so that the performance requirement of a multi-dimensional optical storage system on a femtosecond laser can be greatly reduced, and the system cost is effectively reduced. Moreover, the invention also provides two optimized modified structures for laser processing, namely a microporous structure and an anisotropic structure, which are designed as storage units and can be flexibly applied.

Application Domain

Optical beam sourcesRecord information storage +3

Technology Topic

Erbium lasersOptical storage +10

Image

Examples

Experimental program(3)

Example Embodiment

[0033] Example 1

[0034] figure 1 A system optical path diagram corresponding to the use of a microporous structure as a memory cell.

[0035] The femtosecond laser is used to generate the desired femtosecond laser pulse.

[0036] The high-speed optical switch is used to control the laser pulse switch. For example, the switch is turned off when the write data is 0, and the material is not processed. When the write data is 1, the switch is opened, and the microporous structure is processed in the material. The optical switch can be achieved in a variety of ways such as polarizing elements such as a vibricity, a Pkil box, an electro-optic modulator, and a combination of polarizing plates.

[0037] The mirror is used to reflect the beam to the objective lens.

[0038] The objective lens is used to focus the beam to process the material.

[0039] The sample is a polyacrylonitrile film or a polyacrylonitrile disk sheet, which can produce a microporous structure in any position inside the material by femtosecond laser pulses to achieve three-dimensional light storage.

[0040] The bit shift station is used to move the sample, move the material to the desired area for data writing, and the shape of the rotary table and the lifting stage may be used in the shape of the medium or the XYZ three-axis linear displacement mode.

[0041] Data reading can be achieved by reflection or transmission micro-optical path.

Example Embodiment

[0042] Example 2

[0043] figure 2 The second application of the structure is a schematic diagram of the storage unit. Example 2 A processing / randing represents 0/1, so it can be controlled by the optical switch.

[0044] Specifically, femtosecond lasers produce the desired femtosecond laser pulse.

[0045] The laser modulation unit is used to pulse shaping on the laser, including intensity modulation, pulse width modulation, polarization modulation, time domain modulation, etc., can be rotatable half-wave, Pkl box, electro-modulator, delay line, partial coating reflection Implementation of components such as mirror groups, which are not listed here.

[0046] The high-speed optical switch is used for laser pulse switches, for example, the switch is turned off when the write data is 0, does not process the material, and the switch is opened when the write data is 1, and the anisotropic structure is processed in the material. The optical switch can be achieved in a variety of ways such as polarizing elements such as a vibricity, a Pkil box, an electro-optic modulator, and a combination of polarizing plates.

[0047] The mirror is used to reflect the beam to the objective lens.

[0048] The objective lens is used to focus the beam to process the material.

[0049] The sample is a polyacrylonitrile film or a polyacrylonitrile disk sheet, and the multi-photonic absorption effect can be used to generate an anisotropic structure in any position inside the material, using processing, raw to represent 0 or 1 state, which can be achieved. Three-dimensional light storage of signal-to-noise ratio.

[0050] The bit shift station is used to move the sample, move the material to the desired area for data writing, and the shape of the rotary table and the lifting stage may be used in the shape of the medium or the XYZ three-axis linear displacement mode.

[0051] Data reading can be implemented using transmission micro-optical path under cross-polarization settings.

Example Embodiment

[0052] Example 3

[0053] image 3 The three three-sized three as a memory unit is shown. Example 3 is machining all positions of the material, by changing the birefringence characteristics of the structure of the laser, and therefore, a laser is often opened, and a laser modulation unit is required to dynamically perform the parameters of the laser during processing different structures. Regulate.

[0054] Specifically, femtosecond lasers produce the desired femtosecond laser pulse.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Reduce performance requirements
Reduce system cost

Intelligent voice system and voice wake-up method thereof, and intelligent voice device

InactiveCN109377993AReduce performance requirementslow cost

Owner:SHANGHAI MXCHIP INFORMATION TECHN

A dynamic data mining method and system based on risk control technology

ActiveCN114625786Blow costReduce performance requirements

Owner:HANGYIN CONSUMER FINANCE CO LTD

Multi-dimensional optical storage method using polyacrylonitrile as optical storage medium

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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