High-volume optical vortex multiplexing and de-multiplexing for free-space optical communication

被引：149
|
作者：
Wang, Zhongxi [1 ,2 ]
Zhang, N. [3 ]
Yuan, X. -C. [1 ]
机构：
[1] Nankai Univ, Minist Educ China, Key Lab Optoelect Informat Sci & Technol, Inst Modern Opt, Tianjin 300071, Peoples R China
[2] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 02期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
ORBITAL ANGULAR-MOMENTUM; HELICAL BEAMS; LIGHT-FIELD; LASER-BEAMS; SUPERPOSITION; GENERATION; VORTICES; STATES;
D O I：
10.1364/OE.19.000482
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report an approach to the increase of signal channels in free-space optical communication based on composed optical vortices (OVs). In the encoding process, conventional algorithm employed for the generation of collinearly superimposed OVs is combined with a genetic algorithm to achieve high-volume OV multiplexing. At the receiver end, a novel Dammann vortex grating is used to analyze the multihelix beams with a large number of OVs. We experimentally demonstrate a digitized system which is capable of transmitting and receiving 16 OV channels simultaneously. This system is expected to be compatible with a high-speed OV multiplexing technique, with potentials to extremely high-volume information density in OV communication. (C) 2011 Optical Society of America
引用
收藏
页码：482 / 492
页数：11
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