All-fiber linear polarization and orbital angular momentum modes amplifier based on few-mode erbium-doped fiber and long period fiber grating

2018 ◽  
Vol 16 (10) ◽  
pp. 100604 ◽  
Author(s):  
Jianfei Xing Jianfei Xing ◽  
Jianxiang Wen Jianxiang Wen ◽  
Jie Wang Jie Wang ◽  
Fufei Pang Fufei Pang ◽  
Zhenyi Chen Zhenyi Chen ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Linear Polarization ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Erbium Doped ◽  
Period Fiber Grating

All-fiber third-order orbital angular momentum mode generation employing an asymmetric long-period fiber grating

2020 ◽  
Vol 45 (13) ◽  
pp. 3621 ◽  
Author(s):  
Xiaodong He ◽  
Jiajing Tu ◽  
Xiaowen Wu ◽  
Shecheng Gao ◽  
Lei Shen ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Fiber Grating ◽  
Third Order ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Momentum Mode ◽  
Period Fiber Grating ◽  
Mode Generation

scholarly journals Orthogonal long-period fiber grating for directly exciting the orbital angular momentum

2020 ◽  
Vol 28 (18) ◽  
pp. 27044
Author(s):  
Zhao Liu ◽  
Guoxuan Zhu ◽  
Yali Li ◽  
Jian Yu ◽  
Zhiyong Bai ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

scholarly journals Generation of Orbital Angular Momentum Modes Using Fiber Systems

2019 ◽  
Vol 9 (5) ◽  
pp. 1033 ◽  
Author(s):  
Hongwei Zhang ◽  
Baiwei Mao ◽  
Ya Han ◽  
Zhi Wang ◽  
Yang Yue ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Fiber Grating ◽  
Spatial Methods ◽  
Long Period ◽  
Significant Interest ◽  
Low Insertion Loss ◽  
Period Fiber Grating ◽  
Fiber Modes ◽  
Mode Generation

Orbital angular momentum (OAM) beams, characterized by the helical phase wavefront, have received significant interest in various areas of study. There are many methods to generate OAM beams, which can be roughly divided into two types: spatial methods and fiber methods. As a natural shaper of OAM beams, the fibers exhibit unique merits, namely, miniaturization and a low insertion loss. In this paper, we review the recent advances in fiber OAM mode generation systems, in both the interior and exterior of the beams. We introduce the basic concepts of fiber modes and the generation and detection theories of OAM modes. In addition, fiber systems based on different nuclear devices are introduced, including the long-period fiber grating, the mode-selective coupler, microstructural optical fiber, and the photonic lantern. Finally, the key challenges and prospects for fiber OAM mode systems are discussed.

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