Enhancement transmission filter using a two-dimensional subwavelength periodic membrane

6th conference on Advances in Optoelectronics and Micro/nano-optics

Zhou, Jianyu^1 ; Sang, Tian^1 ; Li, Junlang^1 ; Wang, Rui^1 ; Wang, La^1 ; Gao, Jian^1

Department of Photoelectric Information Science and Engineering, School of Science, Jiangnan University, Wuxi

214122, China^1

关键词: Guided-mode resonance;    Multiple channels;    Oblique incidence;    Reflection bands;    Refractive index modulation;    Transmission filters;    Transmission peaks;    Two Dimensional (2 D);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012006/pdf
DOI  :  10.1088/1742-6596/844/1/012006

来源: IOP

【 摘 要 】

Enhancement transmission filter using a two-dimensional (2-D) subwavelength periodic membrane is proposed. It can be found that strong refractive-index modulation of the silicon periodic membrane can support the excitation of multiple guided-mode resonances (GMRs) in a reflection band, and every GMR relates a transmission peak on its edge, therefore the overlapping of the edges of these resonances can be tailored to create enhancement transmission. Thelocation of the transmission peak is shifted linearly with a slop of 1.51 as the period is varied. Enhancement transmission with multiple channels near 1310 nm can also be achieved using the interaction of the nondegenerate GMRs at oblique incidence.