中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1334-1338.doi: 10.1088/1009-1963/16/5/028
武京治, 李仰军
Wu Jing-Zhi(武京治)† and Li Yang-Jun(李仰军)
摘要: The light's orbital angular momentum (OAM) is a consequence of the spiral flow of the electromagnetic energy. In this paper, an analysis of light beams with OAM used for free space optics (FSO) is conducted. The basic description and conception of light's OAM are reviewed. Both encoding information into OAM states of single light beam and encoding information into spatial structure of the mixed optical vortex with OAM are discussed, and feasibility to improve the FSO's performance of security and obstruction of line of sight is examined.
中图分类号: (Optical communication systems, multiplexers, and demultiplexers?)