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arXiv 2104.05903physics.opticsphysics.app-ph
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基于排列金纳米棒的近完美保真度偏振编码多层光数据存储

Near-perfect fidelity polarization-encoded multilayer optical data storage based on aligned gold nanorods

Linwei Zhu, Yaoyu Cao, Qiuqun Chen, Xu Ouyang, Yi Xu, Zhongliang Hu, Jianrong Qiu, Xiangping Li

摘要:

光偏振信息编码技术在光存储技术中具有重要的应用价值。然而,尽管纳米光子技术的最新进展极大地提高了应用偏振通道的可行性,但在数据记录和读取过程中,在不同偏振角之间发生的严重串扰限制了重构位中的数据保真度,这严重阻碍了该技术在实践中的利用。在本文中,我们展示了一种超低串扰偏振编码多层光学数据存储技术,高保真数据记录和检索,通过利用纳米纤维为基础的纳米复合薄膜,涉及高度对准的金纳米棒(GNRs)。通过在记录介质中平行化金纳米棒,与其随机自组装的对应物相比,信息载体配置分别使信息输入和输出的误写和误读可能性最小化。增强的数据准确性显著提高了比特召回保真度,其通过高于0.99的相关系数来量化。预计所展示的技术可促进开发多路消耗臭氧层物质,以实现更绿色的未来。

英文摘要:

Encoding information in light polarization is of great importance in facilitating optical data storage (ODS) for information security and data storage capacity escalation. However, despite recent advances in nanophotonic techniques vastly enhancing the feasibility of applying polarization channels, the data fidelity in reconstructed bits has been constrained by severe crosstalks occurring between varied polarization angles during data recording and reading process, which gravely hindered the utilization of this technique in practice. In this paper, we demonstrate an ultra-low crosstalk polarization-encoding multilayer optical data storage technique for high-fidelity data recording and retrieving by utilizing a nanofibre-based nanocomposite film involving highly aligned gold nanorods (GNRs). With parallelizing the gold nanorods in the recording medium, the information carrier configuration minimizes miswriting and misreading possibilities for information input and output, respectively, compared with its randomly self-assembled counterparts. The enhanced data accuracy has significantly improved the bit recall fidelity that is quantified by a correlation coefficient higher than 0.99. It is anticipated that the demonstrated technique can facilitate the development of multiplexing ODS for a greener future.

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