Excellent polarization-independent reflector based on guided mode resonance effect  

作　　者：许程 许林敏 强颖怀 朱亚波 刘炯天 麻健勇 

机构地区：[1]School of Materials Science and Engineering, China University of Mining and Technology [2]School of Chemical Engineering & Technology, China University of Mining and Technology [3]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2011年第10期277-280,共4页中国物理B（英文版）

基　　金：supported by the Youth Science Research Foundation of China University of Mining and Technology (Grant No. 2009A058);the Fundamental Research Funds for the Central Universities (Grant No. 2010Qnb06);the Natural Science Foundation of Shanghai Committee of Science and Technology (Grant No. 10ZR1433500)

摘　　要：A broad band polarization-independent reflector working in the telecommunication C＋L band is proposed using the guided mode resonance effect of a periodic surface relief element deposited by a layer of silicon medium. It is shown that this structure can provide high reflection （R 〉 99.5%） and wide angular bandwidth （θ≈ 20°, R 〉 98%） for both TE and TM polarizations over a wide spectrum band 1.5 μm-l.6 μm. Furthermore, it is found by rigorous coupled wave analysis that the polarization-independent reflector proposed here is tolerant of a deviation of grating thickness, which makes it very easy to fabricate in experiments.A broad band polarization-independent reflector working in the telecommunication C＋L band is proposed using the guided mode resonance effect of a periodic surface relief element deposited by a layer of silicon medium. It is shown that this structure can provide high reflection （R 〉 99.5%） and wide angular bandwidth （θ≈ 20°, R 〉 98%） for both TE and TM polarizations over a wide spectrum band 1.5 μm-l.6 μm. Furthermore, it is found by rigorous coupled wave analysis that the polarization-independent reflector proposed here is tolerant of a deviation of grating thickness, which makes it very easy to fabricate in experiments.

关 键 词：polarization-independent reflector guided mode resonance rigorous coupled wave anal-ysis 

分 类 号：O436.3[机械工程—光学工程]