Designing high efficiency uniform-intensity splitter with binary-phase subwavelength structure
Dammann grating designed by using the scalar diffractive theory is a conventional uniform-intensity splitter with binaryphase, whose diffraction efficiency is no more than 87％ generally and representative value is about percent 80.This will limit its further progress. Based on the rigorous couple-wave analysis theory and the genetic algorithm, a method has been proposed to design a new uniform-intensity splitter with binary-phase subwavelength structure, which has higher diffraction efficiency. Then five new-type beam splitters with binary-phase, whose splitting ratios are 3, 4, 5, 6 and 7, are obtained by the emulating package. Their diffraction efficiency is more than 92％, and it is very bigger than the conventional Dammann grating. Owing to its subwavelength structure, the size of this kind of splitter is smaller. It will be widely applied in some domains, such as ultra-precision manufacturing, micro-opto-electro-mechanical system, information processing, optical fiber communication, biomedicine, national defense, military affairs and entertainment, etc.
binary optics uniform-intensity splitter subwavelength structure high diffraction efficiency rigorous couple-wave analysis theory genetic algorithm
Yan Shuhua Li E Zhou Chunlei Shen Shaowei Gao Lei Tong Huipeng
College of Mechatronical Engineering and Automation, National University of Defense Technology,Chang College of Mechatronical Engineering and Automation, National University of Defense Technology, Chan
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-6
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）