The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Apr. 15, 2020
Marvell Asia Pte, Ltd., Singapore, SG;
Jie Lin, Santa Clara, CA (US);
MARVELL ASIA PTE LTD., Singapore, SG;
Abstract
An optical splitter includes a silicon-on-insulator substrate having a cladding layer. The optical splitter also includes a first waveguide of a first width and a first length buried in the cladding layer and a second waveguide of a second width and a second length buried in the cladding layer disposed in close proximity of the first waveguide by a gap distance. A ratio of the second width over the first width is configured to be smaller than 1 while the first length, the second length, and the gap distance are configured to allow evanescent coupling of a first confined mode of an optical signal in the first waveguide into the second waveguide with a certain splitting ratio being achieved in a range of 1% to <50% substantially unchanged over a broadband of wavelengths.