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Proposal for Angular Momentum Multiplexing in Microholographic Recording

机译:微全息记录中角动量复用的建议

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摘要

A novel multiplexing technology in microholographic recording using beams that have an orbital angular momentum has been proposed. The multiplexing is carried out by changing the order of the phase singularity (m) of beams for recording and readout in multiple states. In the recording operation, multiple microholograms are formed at the same position of the recording medium by changing the value of m. In the readout operation, each of the multiple microholograms is selectively reproduced by changing the value of m. Microholograms with m≠0 have a spiral shape, and the handednesses, multiplicities, and pitches of the spiral differ from each other depending on the value of m. A readout signal simulation has demonstrated that the multiplexing of at least five bits is feasible. It is expected that a terabyte-order recording capacity will be achieved in microholographic recording by combining this technology with three-dimensional recording technology.
机译:已经提出了在微全息记录中使用具有轨道角动量的光束的新颖的多路复用技术。通过改变用于在多种状态下记录和读出的光束的相位奇异性(m)的顺序来执行多路复用。在记录操作中,通过改变m的值,在记录介质的相同位置形成多个微全息图。在读出操作中,通过改变m的值来选择性地再现多个微全息图的每一个。 m≠0的微全息图具有螺旋形状,并且螺旋的手性,多重性和螺距根据m的值而彼此不同。读出信号仿真表明,至少五个位的多路复用是可行的。期望通过将该技术与三维记录技术相结合,在微全息记录中将达到TB级的记录容量。

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  • 来源
    《Japanese journal of applied physics》 |2013年第9issue3期|09LD11.1-09LD11.6|共6页
  • 作者

    Ryuichi Katayama;

  • 作者单位

    Department of Information Electronics, Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan;

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  • 正文语种 eng
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