红外与毫米波学报2024，Vol.43Issue(2)：179-186,8.DOI:10.11972/j.issn.1001-9014.2024.02.006
亚波长光栅与法布里-珀罗滤光片集成的高性能光谱偏振分光器
High-performance spectro-polarimetric filter by integrating subwavelength gratings with Fabry-Perot filter
摘要
Abstract
Spectral polarization imaging technology is a novel optical imaging technique that not only enhances the amount of information acquired from targets,but also reduces background noise,which can capture target de-tails and detect disguised targets.This paper presents a spectro-polarimetric device by integrating subwavelength gratings with Fabry-Perot(F-P)filter,which can obtain ultra-high spectral resolution and polarization extinction ratio with high control flexibly on both spectrum and polarization.A spectro-polarimetric filter(SPF)has been designed to obtain 4 spectral channels of stokes parameters simultaneously.Simulation results show that it has a spectral resolution(SR,λ/∆λ)of 217 and a polarization extinction ratio(PER)of 106.The polarization extinc-tion ratio of subwavelength grating is measured to be over 500 PER with 90%transmission efficiency.The spec-tral resolution of all-dielectric F-P filter is measured to be 30 with 60%transmission efficiency in the long wave in-frared band.The designed method is universal and can be used in a wide range of wavelength bands such as visi-ble,infrared,and even terahertz.It has great potential applications in fields such as micro-polarization spectrome-ters and full-stokes polarization detection,benefiting from these advantages.关键词
光谱偏振分光器/亚波长光栅/法布里-珀罗滤光片/光谱/偏振Key words
spectro-polarimetric filter/subwavelength grating/F-P filter/spectra/polarization分类
数理科学引用本文复制引用
朱远宇,关学昱,余沛其,刘清权,贾奇祥,吴杰,李辰璐,李志锋,王少伟..亚波长光栅与法布里-珀罗滤光片集成的高性能光谱偏振分光器[J].红外与毫米波学报,2024,43(2):179-186,8.基金项目
Supported by the National Key R&D Program of China(2021YFA0715500),the National Natural Science Foundation of China(NSFC)(12227901),the Shanghai Municipal Science and Technology Major Project(2019SHZDZX01)and the Chinese Academy of Sciences President's Interna-tional Fellowship Initiative(2021PT0007)Thanks to the support of Soft Matter Nanofab(SMN180827),ShanghaiTech University Quantum De-vice Lab.Thanks to Prof.Wenjuan Wang for providing the software(Lumerical FDTD Solutions,Ansys). （2021YFA0715500）
