Free-space optical data links based on coaxial sidelobe-modified optical vortices  

作　　者：张萌 贾平 李玉茹 雷霆 李朝晖 袁小聪 

机构地区：[1]Institute of Modern Optics, Nankai University [2]Institute of Photonics Technology, Jinan University [3]Institute of Micro & Nano Optics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University

出　　处：《Chinese Optics Letters》2015年第10期16-20,共5页中国光学快报（英文版）

基　　金：partially supported by the National Nature Science Foundation of China (Nos. 61138003, 61427819, and 61405121);the Natural Science Foundation of SZU (No. 201454);the startup funding of SZU (Nos. 000011, 000075)

摘　　要：We propose and demonstrate free-space optical data links based on coaxial sidelobe-modified optical vortices（CSMOVs）. In contrast to the optical communication systems based on amplitude, frequency, or phase detection, the proposed scheme uses the radii ratio between the principle ring and the first sidelobe of the CSMOV.Therefore, the demand of stringent alignment and/or accurate phase matching is released. We design and optimize a composite computer-generated hologram to generate a CSMOV with four topological charges（TCs）.Extracted from the images captured by a CCD camera, the radii ratio between the principle ring and the first sidelobe of different TCs are consistent with the theoretical values.We propose and demonstrate free-space optical data links based on coaxial sidelobe-modified optical vortices（CSMOVs）. In contrast to the optical communication systems based on amplitude, frequency, or phase detection, the proposed scheme uses the radii ratio between the principle ring and the first sidelobe of the CSMOV.Therefore, the demand of stringent alignment and/or accurate phase matching is released. We design and optimize a composite computer-generated hologram to generate a CSMOV with four topological charges（TCs）.Extracted from the images captured by a CCD camera, the radii ratio between the principle ring and the first sidelobe of different TCs are consistent with the theoretical values.

关 键 词：links topological matching captured alignment camera charges stringent optimize coordinates 

分 类 号：O437[机械工程—光学工程]