公开(公告)号：US20220283349A1

公开(公告)日：2022-09-08

申请号：US17750023

申请日：2022-05-20

申请人： Huawei Technologies Co., Ltd. ,  TOHOKU UNIVERSITY

发明人： Mizuhisa NIHEI ,  Feng YU ,  Yoshiaki KANAMORI

IPC分类号： G02B5/28

摘要： A wavelength selective filter comprises a multi-layered structure alternately having a low refractive index layer and a high refractive index layer, a periodic structure layer facing the low refractive index layer of the multi-layered structure, the low refractive index layer having a refractive index between 1.30 and 1.60 and a thickness between 100 nm and 800 nm, the high refractive index layer having a refractive index between 1.70 and 2.20 and a thickness between 30 nm and 100 nm, and in a plane perpendicular to a thickness direction of the periodic structure layer, the multi-layered structure layer having a periodic structure made of metal or semiconductor.

公开(公告)号：US20220190461A1

公开(公告)日：2022-06-16

申请号：US17432194

申请日：2019-03-27

申请人： TOHOKU UNIVERSITY

发明人： Yoshiaki KANAMORI ,  Kazuhiro HANE

IPC分类号： H01P7/00 ,  H01P11/00

摘要： A three-dimensional isotropic metamaterial including an aggregate of SRR-buried block pieces obtained by burying SRRs in a transparent resin cube, at random in a transparent resin member; a method of producing the same; and a terahertz region optical element.