Vortex mode excitation in a multimode fiber by the Laguerre-Gaussian laser beams

被引：2
|
作者：
Xia, Changquan [1 ]
Tong, Guodong [1 ]
Zhao, Xingyue [1 ]
Zhu, Jinrong [1 ]
机构：
[1] Yangzhou Univ, Sch Phys Sci & Technol, Yangzhou, Jiangsu, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2019年 / 51卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Laguerre-Gaussian laser beam; Orbital angular momentum; Multimode fiber; Mode coupling; ORBITAL ANGULAR-MOMENTUM;
D O I：
10.1007/s11082-019-1982-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The coupling of Laguerre-Gaussian (LG) vortex modes into the Bessel vortex modes in a multimode fiber was analyzed using the vector form of LG beams. A formula for estimating the transmission coefficients of the excited vortex modes was developed. Analytical calculation results show that the coupling coefficients are affected by the focus size. With proper beam waist radius most the power of incident vortex mode can couple into single vortex mode. The numerical simulation was also carried out, and the simulation results are in good agreement with those from the analytical model.
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页数：9
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