Two-dimensional grating coupler and methods of making same

Disclosed are apparatus and methods for optical coupling. A described apparatus includes: a planar layer; a grating region comprising an array of scattering elements arranged in the planar layer to form a two-dimensional grating; a first taper structure formed in the planar layer connecting a first...

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Bibliographic Details
Main Authors CHO, LANOU, TSUI, FELIX YING-KIT, SHIH, CHIH-TSUNG, RUSU, STEFAN, JOU, CHEWN-PU
Format Patent
LanguageChinese
English
Published 16.10.2022
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:Disclosed are apparatus and methods for optical coupling. A described apparatus includes: a planar layer; a grating region comprising an array of scattering elements arranged in the planar layer to form a two-dimensional grating; a first taper structure formed in the planar layer connecting a first side of the grating region to a first waveguide, wherein a shape of the first taper structure is a first triangle that is asymmetric about any line perpendicular to the first side of the grating region in the planar layer; and a second taper structure formed in the planar layer connecting a second side of the grating region to a second waveguide. A shape of the second taper structure is a second triangle that is asymmetric about any line perpendicular to the second side of the grating region in the planar layer. The first side and the second side are substantially perpendicular to each other.
Bibliography:Application Number: TW20210119439