聊城大学学报（自然科学版）2018，Vol.31Issue(4)：13-17,5.DOI:10.19728/j.issn1672-6634.2018.04.003
非周期高透射亚波长会聚光栅的研究
Non-periodic Subwavelength Transmission Convergence Grating
摘要
Abstract
Sub-wavelength grating as a novel optical device can achieve beam deflection, power split, convergence, polarization splitting and other functions.Coupling for spatial light and beam type requirements for micro laser output light.Sub-wavelength grating with transmission beam convergence effect is proposed.By designing the structure of the sub-wavelength grating, the wavefront phase of the sub-wavelength grating is controlled so that the sub-wavelength grating has a high transmittance to achieve the convergent effect of the transmitted beam.The finite element analysis (FEM) was used to simulate the numerical value of the designed one-dimensional non-periodic sub-wavelength convergence grating.The simulation results show that the non-periodic grating designed by the finite element method has convergent effect on the divergent beam.The simulated transmission grating with a focal length of10μm is converged.The actual focal length fx obtained by the simulation is 7.715μm and the transmittance is 81.8％.It is expected to have important applications in the field of optical communication device integration and space optical coupling.关键词
亚波长光栅/透射/光束会聚Key words
sub-wavelength grating/transmitted beam/beam convergence分类
信息技术与安全科学引用本文复制引用
岳春云,姜夕梅,房文敬,范鑫烨,白成林,牛慧娟..非周期高透射亚波长会聚光栅的研究[J].聊城大学学报（自然科学版）,2018,31(4):13-17,5.基金项目
国家自然科学基金项目 (318011605) 资助 （318011605）
