摘要
由于零折射率介质对于自由空间来说具有零相移和阻抗匹配的特性,因而可以用来控制电磁辐射模式。设计了新型的准直和分光器件结构,该器件建立在近零折射率材料基础上。该结构能实现将散射光转化成准直光束及分光的功能,分光束数、光束宽度和光束方向可以精确控制。仿真结果表明设计的结构具有完美的性能。
Due to the zero phase variation and impedance matching to free space, zero-index material is used to control the electromagnetic radiation patterns. We design a new type collimator and optical splitter structure based on near-zero-index material. Such structures can implement the beam transformation from cylindrical wave to parallel wave and optical splitting. The numbers of the splitting beams,the width and the direction of the beams can be correctly tailored. All the simulation results show that our designs have perfect performance.
出处
《激光与光电子学进展》
CSCD
北大核心
2014年第1期179-184,共6页
Laser & Optoelectronics Progress
基金
江苏省高校自然科学研究面上项目(11KJD520002)
常州市科技计划(CC20120030)
关键词
光学设计
零折射率材料
准直器
分光器
optical design
zero-index material
collimator
optical splitter
