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Fiber-based mode converter for generating optical vortex beams

Fiber-based mode converter for generating optical vortex beams

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Abstract

In this work, an all-fiber-based mode converter for generating orbital angular momentum (OAM) beams is proposed and numerically investigated. Its structure is constructed by cascading a mode selective coupler (MSC) and an inner elliptical cladding fiber (IECF). OAM modes refer to a combination of two orthogonal LPlm modes with a phase difference of ±π/2. By adjusting the parameters and controlling the splicing angle of MSC and IECF appropriately, higher-order OAM modes with topological charges of l = ±1, ±2, ±3 can be obtained with the injection of the fundamental mode LP01, resulting in a mode-conversion efficiency of almost 100%. This achievement may pave the way towards the realization of a compact, all-fiber, and high-efficiency device for increasing the transmission capacity and spectral efficiency in optical communication systems with OAM mode multiplexing.

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DOI:10.29026/oea.2018.180003

所属栏目:Original Article

基金项目:This work was supported by National Natural Science Foundation of China (Grant No. 61275049).

收稿日期:2018-02-07

修改稿日期:2018-04-09

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作者单位    点击查看

Ruishan Chen:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
Jinghao Wang:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
Xiaoqiang Zhang:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, ChinaHefei General Machinery Research Institute, Hefei 230031, China
Junna Yao:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
Hai Ming:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
Anting Wang:Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China

联系人作者:Anting Wang(atwang@ustc.edu.cn)

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引用该论文

Ruishan Chen,Jinghao Wang,Xiaoqiang Zhang,Junna Yao,Hai Ming,Anting Wang. Fiber-based mode converter for generating optical vortex beams[J]. Opto-Electronic Advances, 2018, 1(7): 180003

Ruishan Chen,Jinghao Wang,Xiaoqiang Zhang,Junna Yao,Hai Ming,Anting Wang. Fiber-based mode converter for generating optical vortex beams[J]. Opto-Electronic Advances, 2018, 1(7): 180003

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