公开(公告)号：US20190011714A1

公开(公告)日：2019-01-10

申请号：US16027011

申请日：2018-07-03

Applicant: VIAVI Solutions Inc.

Inventor： Karen Denise HENDRIX ,  Warren HENDRICKS

IPC: G02B27/12

Abstract: A dichroic prism beamsplitter may include a medium with a refractive index greater than approximately 1.0. The dichroic prism beamsplitter may include a plurality of layers sandwiched by the medium. The plurality of layers may include an equivalent structure including at least one layer with a refractive index that is less than a threshold refractive index for total internal reflection. The at least one layer may be associated with a thickness less than or equal to a threshold thickness associated with total internal reflection for a threshold wavelength. The at least one layer may cause total internal reflection for a first wavelength range that is less than or equal to the threshold wavelength and causes evanescent wave coupling for a second wavelength range that is greater than the threshold wavelength.