Generation of Orbital Angular Momentum Modes Using Fiber Systems

Applied Sciences

卷:9

Baiwei Mao¹  Yange Liu¹  Ya Han¹  Yang Yue¹  Zhi Wang¹  Hongwei Zhang² 

[1] ;

[2] Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China;

关键词: orbital angular momentum;    long period fiber grating;    mode selective coupler;    photonics lantern;    microstructure optical fiber;   

DOI  :  10.3390/app9051033

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown