A bio-inspired model for bidirectional polarisation detection

被引：3
|
作者：
Zhu, Qifan [1 ,2 ]
Fu, Yuegang [1 ,2 ]
Liu, Zhiying [1 ,2 ]
机构：
[1] Changchun Univ Sci & Technol, Sch Optengn, Changchun 130022, Jilin, Peoples R China
[2] Changchun Univ Sci & Technol, Key Lab Optoelect Measurement & Opt Informat Tran, Changchun 130022, Jilin, Peoples R China
来源：
BIOINSPIRATION & BIOMIMETICS | 2018年 / 13卷 / 06期
关键词：
bidirectional polarisation detection; mantis shrimp; multi-layered orthogonal Si wire grids; rhabdom; MICROPOLARIZER ARRAY; IMAGING SENSOR; EYE STRUCTURE; DIVISION; VISION; FABRICATION;
D O I：
10.1088/1748-3190/aadd64
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study investigated a novel polarisation detection model based on the microstructure of rhabdom in mantis shrimp eyes, in which a single unit can detect two directions of orthogonal polarisation. The bionic model incorporated multi-layered orthogonal Si wire grids, and the finite-difference time-domain method was used to simulate light absorption. A single-layer Si wire grid was simulated to study the effects of thickness and duty cycle on extinction ratios. A multilayer orthogonal wire grid was simulated to study the effects of distance between adjacent layers. The simulations revealed that the bionic model can achieve orthogonal polarisation detection. Additionally, for 600 coupled layers, the extinction ratios in both directions were greater than 60, and light absorption in the absorptive directions exceeded 96%.
引用
收藏
页数：8
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