Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film
Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film
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DOI：
10.1117/12.2568902
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
M. Sakamoto;Y. Kaneko;Yusuke Higa;Kohei Noda;T. Sasaki;Masayuki Tanaka;N. Kawatsuki;H. Ono
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文献类型：
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作者：
M. Sakamoto;Y. Kaneko;Yusuke Higa;Kohei Noda;T. Sasaki;Masayuki Tanaka;N. Kawatsuki;H. Ono
近年来，基于矢量光束（VB）的光学多路复用通信正在引起注意以增加信息传输容量，因此已经报道了通过使用液晶制造的几种类型的VB解复用器。在本报告中，我们提出了一种交叉叉形偏振光栅（CFPG）作为一种新的VB解复用器。通过在可光交联聚合物液晶上记录多重偏振全息图来制备CFPG。记录的每个偏振全息图单独工作，作为一个VB检测器，它将特定的VB转换为高斯光束衍射。CFPG具有使解复用器小型化的潜力，因为可以集成多个VB检测功能。还通过使用一对四分之一波长PG和正常FPG证明了径向偏振和方位偏振之间的VB检测。
In recent years, vector beam (VB)-based optical multiplexing communication is attracting attention to increase the information transfer capacity, and hence several types of VB demultiplexers fabricated by using liquid crystals have been reported. In this presentation, we propose a crossed-fork-shaped polarization grating (CFPG) as a new VB demultiplexer. The CFPG was fabricated by recording multiple polarization holograms onto the photocrosslinkable polymer liquid crystal. Recorded each polarization hologram works individually to act as a VB detector, which converts specific VB into a Gaussian beam with diffraction. The CFPG has the potential to miniaturize the demultiplexer because several VB detection functions can be integrated. VB detection between radial and azimuthal polarizations also demonstrated by using a pair of quarter-wave PG and normal-FPG.