公开(公告)号：US10073191B2

公开(公告)日：2018-09-11

申请号：US14630080

申请日：2015-02-24

Applicant: Massachusetts Institute of Technology

Inventor： Yichen Shen ,  Dexin Ye ,  Ivan Celanovic ,  Steven G. Johnson ,  John D. Joannopoulos ,  Marin Soljacic

IPC: G02B1/00 ,  G02B5/30 ,  G02B5/26 ,  G02F1/01 ,  G02B5/20

CPC classification number: G02B1/005 ,  G02B5/20 ,  G02B5/26 ,  G02B5/3066 ,  G02B5/3083 ,  G02F1/0131 ,  G02F1/0147

Abstract: A filter to transmit incident radiation at a predetermined incidence angle includes a plurality of photonic crystal structures disposed substantially along a surface normal direction of the filter. The photonic crystal structure includes a multilayer cell that comprises a first layer having a first dielectric permittivity, and a second layer having a second dielectric permittivity different from the first dielectric permittivity. The first layer and the second layer define a Brewster angle substantially equal to the predetermined incidence angle based on the first dielectric permittivity and the second permittivity. Each photonic crystal structure in the plurality of photonic crystal structures defines a respective bandgap, and the respective bandgaps of the plurality of photonic crystal structures, taken together, cover a continuous spectral region of about 50 nm to about 100 mm.