Simultaneous generation of the second- and third-order OAM modes by using a high-order helical long-period fiber grating

被引:46
作者
Detani, Taishu [1 ]
Zhao, Hua [2 ]
Wang, Peng [3 ]
Suzuki, Taiga [1 ]
Li, Hongpu [1 ]
机构
[1] Shizuoka Univ, Grad Sch Engn, Naka Ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan
[2] Nanjing Normal Univ, Sch Comp & Elect Informat, Nanjing 210023, Peoples R China
[3] Nanjing Xiaozhuang Univ, Coll Elect Engn, Nanjing 211171, Peoples R China
关键词
ORBITAL ANGULAR-MOMENTUM; OPTICAL VORTEX GENERATION; RESONANCES; EXCITATION; CONVERSION; WRITTEN; LIGHT;
D O I
10.1364/OL.418248
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An all-fiber orbital angular momentum (OAM) mode generator enabling simultaneous generation of the second- and the third-order OAM modes with conversion efficiencies larger than 95% has been proposed and experimentally demonstrated, which is realized by using a high-order helical long-period fiber grating (HLPG) written in a thinned four-mode fiber. This is the first time, to the best of our knowledge, that two such OAM modes have been simultaneously obtained at wavelengths ranging from 1450 to 1620 nm by using only one fiber component, i.e., the HLPG. The proposed method provides a new way to simultaneously generate different orders of the OAM modes, which would. further expand the OAM's applications to the fields of the optical tweezers, microscopy, and fiber communication, etc. (C) 2021 Optical Society of America
引用
收藏
页码:949 / 952
页数:4
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