Abstract

Grating couplers and methods of fabricating a grating coupler. The grating coupler may include a plurality of grating structures arranged on a substrate and a layer arranged over the grating structures. The grating structures are composed of a first material characterized by a first refractive index with a real part. The layer is composed of a second material characterized by a second refractive index with a real part. The real part of the second refractive index is greater than the real part of the first refractive index of the first material for electromagnetic radiation with a wavelength in a range of 1 micron to 9 microns.

Metadata

publication

US Patent 10,746,925, 2020

year

2020

publication date

2020/8/18

authors

AP Jacob, Y Bian

link

https://patents.google.com/patent/US10746925B2/en

resource_link

https://patentimages.storage.googleapis.com/c7/3b/14/1dfce1890c4745/US10746925.pdf

inventors

Ajey P Jacob, Yusheng Bian

patent_office

US

patent_number

10746925

application_number

15878025