PMMA封装的全介质超表面滤波器设计

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中图分类号：TB383 文献标识码：A 文章编号:1672-0105(2025)03-0074-05

Design of an All-dielectric Metasurface Filter Encapsulated in PMMA

YANGFei,SHENGMiaomiao,WANGDesheng,ZHONGZhenggen （Zhejiang Industry&TradeVocational College,Wenzhou 325oo3,China）

Abstract:Filters are among the most frequentlyusedoptical components inoptical systems.Traditional filters often require precisecoating technologies,leading tohigh productioncostsandbulkydevices.Incontrast,opticalelements basedonmetasurfaces arethinerandlighter,andtheyareregardedasoneofthemostpromisingdirectionsfornew-typeopticalcomponents.This paper proposesadsignforanall-dielectric metasurface-basedfiter thatachieves highselectivitywithreducedfbricationcomplexityby optimizing the structural parameters ofthe metasurface.The feature size of the metasurface filter is not less than 100nm ,and a large feature size is conducive to reducing the requirements for the production process. Operating around 630nm ，the filtercan block incident light within a specific bandwidth of approximately 2nm .Compared to most metasurface components that are directly exposed toair,a PMMA layerwasused inthis studytoencapsulatethe metasurfaceas preliminary packaging during thedesign process.The results show that this design can effectively protect the metasurface.

Keywords:metasurface; filter;all-dielectric

0引言

超表面通常指材料的元胞结构为人工设计制造且特征尺寸小于工作波长的二维光学材料，通过设计超表面的元胞结构并进行周期性或特定的排列可以实现丰富的光学功能，如对光的偏振态进行变换，对光的波前进行塑形，或提供特殊的反射透射特性等。（剩余7667字）