ATHERMALIZED ARRAYED WAVEGUIDE GRATING

A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port wave-guide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to...

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Bibliographic Details
Main Author TRITA, Andrea
Format Patent
LanguageEnglish
French
German
Published 02.03.2022
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A multi-path interference filter. The multi-path interference filter includes a first port waveguide, a second port wave-guide, and an optical structure connecting the first port waveguide and the second port waveguide. The optical structure has a first optical path from the first port waveguide to the second port waveguide, and a second optical path, different from the first optical path, from the first port waveguide to the second port waveguide. The first optical path has a portion, having a first length, within hydrogenated amorphous silicon. The second optical path has a portion, having a second length, within crystalline silicon, and the second optical path has either no portion within hydrogenated amorphous silicon, or a portion, having a third length, within hydrogenated amorphous silicon, the third length being less than the first length.
Bibliography:Application Number: EP20180765710