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Optical information processing apparatus and optical information processing method

An information processing device and information processing method technology, applied in the direction of beam guiding device, optical recording/reproduction, optical recording/reproduction/erasing method, etc., can solve the problem of not considering the diffraction efficiency of holograms, increasing the recording density, etc. question

Inactive Publication Date: 2010-09-22
MAPLE VISION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in most conventional multiplexing methods for multiplexing recording holograms, only a scheme for increasing the recording density is proposed without considering the diffraction efficiency of hologram reproduction

Method used

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  • Optical information processing apparatus and optical information processing method
  • Optical information processing apparatus and optical information processing method
  • Optical information processing apparatus and optical information processing method

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Embodiment Construction

[0047] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. figure 1 is a diagram showing the structure of an optical information processing apparatus according to an embodiment of the present invention.

[0048] refer to figure 1 , the optical information processing device according to the embodiment of the present invention includes: a light source 10 , a polarizing beam splitter 20 , a signal beam optical system 40 , a reference beam optical system 30 and a storage medium table 60 .

[0049] The light source 10 may be a blue laser with a wavelength of 450nm to 500nm, a green laser with a wavelength of 500nm to 570nm, or other light sources. The polarization beam splitter 20 splits light incident from the light source 10 into polarized beams according to polarization directions. The polarization beam splitter 20 transmits the P-polarized beam and reflects the S-polarized beam. The P-polarized beam propagates into...

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Abstract

Provided are optical information processing apparatus and method. In the optical information processing apparatus and method, when the recording regions in which optical information is recorded in an angular multiplexing scheme overlap with each other, a recording angle and a recording position for optical information is adjusted so as to improve reproducing efficiency of readout beams reproducedfrom the overlap recording regions, so that heights of ''null'' for diffraction energy reproduced from the recording regions and overlap recording regions can be lowered. Accordingly, it is possible to reduce crosstalk noise during the recording and producing of the optical information and to improve optical information recording quality and reproducing efficiency.

Description

technical field [0001] The present invention relates to an optical information processing device and an optical information processing method, and more particularly to an optical information processing device and an optical information processing method that process optical information by using two or more multiplexing recording methods. Background technique [0002] As an example of an optical data processing device, a holographic optical information processing device records the interference fringes formed by the intersection of two light beams in a storage medium. This interference fringe is a kind of recording data. One of the two beams is an optically modulated signal beam, and the other is a reference beam having the same wavelength as the signal beam. The holographic optical information processing device reproduces data by irradiating a reference beam to interference fringes formed on a storage medium and detecting a readout beam generated by diffraction of the inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/135G11B7/13G11B7/125G11B7/007G11B7/0065G03H1/26
CPCG03H1/265G11B7/0065G11B7/085G11B7/128G11B7/13G11B7/1362G11B7/1381
Inventor 权润瑛金近律
Owner MAPLE VISION TECH