激光与光电子学进展, 2018, 55 (3): 032301, 网络出版: 2018-09-10  

基于超表面的可见光波段布拉格反射波导研究 下载: 1874次

Study of Bragg Reflection Waveguide Based on Metasurface in Visible Light Band
作者单位
2南京信息工程大学气象灾害预警与评估协同创新中心, 江苏 南京 210044
摘要
采用SiO2/Si构建了可见光波段的分布式布拉格反射镜(DBR),在其中加入SU-8光刻胶制备的中心腔,构成传统的布拉格反射波导(BRW),利用传输矩阵法分析了可见光在分布式布拉格反射镜和布拉格反射波导中的传输情况,并研究了介质折射率比、厚度和周期数等各因素对布拉格反射镜的影响以及SU-8的各参量对光子带隙的影响规律。针对传统布拉格反射波导硬件制备比较困难的问题,在SU-8中引入Si柱超表面,构成新型的布拉格反射波导。通过实验分析了超表面对缺陷模的影响,实验表明超表面具有调控缺陷模波长的作用,且新型布拉格反射波导阵列可完成可见光波段的分光功能,可用于改进光学仪器。
Abstract
Distributed Bragg reflector (DBR) with visible light band is constructed by SiO2/Si. The central cavity made of SU-8 photoresist is added into it to form the traditional Bragg reflector (BRW). The transmission matrix method is used to analyze the transmission of visible light in the distributed Bragg reflector and the Bragg reflector. The effect of various factors such as medium refractive index, thickness and number of cycles on Bragg mirrors and the influence of various parameters of SU-8 on the photonic bandgap are studied. Aiming at the difficult preparation of the traditional Bragg reflective waveguide hardware, a new type of Bragg reflective waveguide is constructed, when Si metasurface is introduced into SU-8. The effect of metasurface on the defect mode is analyzed experimentally. Experiments show that the metasurface has the function of controlling the defect mode wavelength, and the new Bragg reflector waveguide array can complete beam splitting function in the visible light band. Which can be used to improve optical instruments.

任尚书, 周树道, 王敏, 彭舒龄. 基于超表面的可见光波段布拉格反射波导研究[J]. 激光与光电子学进展, 2018, 55(3): 032301. Shangshu Ren, Shudao Zhou, Min Wang, Shuling Peng. Study of Bragg Reflection Waveguide Based on Metasurface in Visible Light Band[J]. Laser & Optoelectronics Progress, 2018, 55(3): 032301.

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