Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film

Moritsugu Sakamoto; Yusuke Kaneko; Yusuke Higa; Kohei Noda; Tomoyuki Sasaki; Masayuki Tanaka; Nobuhiro Kawatsuki; Hiroshi Ono

doi:10.1117/12.2568902

20 August 2020 Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film

Moritsugu Sakamoto, Yusuke Kaneko, Yusuke Higa, Kohei Noda, Tomoyuki Sasaki, Masayuki Tanaka, Nobuhiro Kawatsuki, Hiroshi Ono

Author Affiliations +

Proceedings Volume 11472, Liquid Crystals XXIV; 114720Q (2020) https://doi.org/10.1117/12.2568902
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Abstract

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.

Conference Presentation

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Moritsugu Sakamoto, Yusuke Kaneko, Yusuke Higa, Kohei Noda, Tomoyuki Sasaki, Masayuki Tanaka, Nobuhiro Kawatsuki, and Hiroshi Ono "Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film", Proc. SPIE 11472, Liquid Crystals XXIV, 114720Q (20 August 2020); https://doi.org/10.1117/12.2568902

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