| 二元光栅抗反射特性的耦合波分析 |
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| 引用本文： | 熊飞峤,颜树华,杨健,周春雷.二元光栅抗反射特性的耦合波分析[J].光学技术,2006,32(4):556-558. |
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| 作者姓名： | 熊飞峤 颜树华 杨健 周春雷 |
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| 作者单位： | 遵义师范学院物理系，国防科技大学机电工程与自动化学院，国防科技大学机电工程与自动化学院，国防科技大学机电工程与自动化学院 贵州遵义563002，国防科技大学机电工程与自动化学院，长沙410073，长沙410073，长沙410073，长沙410073 |
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| 摘 要： | 基于严格耦合波分析理论和遗传算法,研究了亚波长矩形光栅(即二元光栅)的抗反射特性。针对光通信中的1.55μm波长设计了抗反射矩形光栅。探讨了光栅周期、占空比和光栅深度的变化对抗反射特性的影响。给出了光栅的抗反射特性所适用的入射角度及波长范围。当入射角度小于30°,在光纤传输系统中入射光波长为C波段和L波段时,反射效率小于0.4%,有效地减小了光纤传输系统的回波损耗。
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| 关 键 词： | 二元光学 亚波长矩形光栅 抗反射特性 严格耦合波分析 遗传算法 |
| 文章编号： | 1002-1582(2006)04-0556-03 |
| 收稿时间： | 2006/1/12 |
| 修稿时间： | 2006年1月12日 |
Research on antireflective performance of binary gratings by coupled-wave analysis |
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| XIONG Fei-qiao.Research on antireflective performance of binary gratings by coupled-wave analysis[J].Optical Technique,2006,32(4):556-558. |
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| Authors: | XIONG Fei-qiao |
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| Affiliation: | XIONG Fei-qiao~ |
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| Abstract: | The antireflective performance of subwavelength gratings with rectangular grooves,which are also called binary gratings,is investigated based on the rigorous couple-wave analysis theory and the genetic algorithm. A grating with antireflective feature for 1.55μm in optical communication is designed. The dependence relationships of reflection-efficiency with the changes of the grating period,duty cycle and depth are studied. The suitable ranges of incident angle and wavelength in which the grating can work effectively are given. The reflection-efficiency is reduced to no more than 0.4% when the incident angle is less than 30 degrees and operation at band C and band L. The optical return loss of optical fiber communication is extremely improved. |
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| Keywords: | binary optics subwavelength grating with rectangular grooves antireflective performance rigorous couple-wave analysis(RCWA) genetic algorithm |
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