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:
Dec. 29, 2020
Filed:
Jan. 07, 2020
University of Central Florida Research Foundation, Inc., Orlando, FL (US);
Jeffrey Chiles, Boulder, CO (US);
Sasan Fathpour, Orlando, FL (US);
Univeristy of Central Florida Research Foundation, Inc., Orlando, FL (US);
Abstract
A photonic device may include a lower cladding layer and a device layer. The device layer may include a first waveguide supporting TE and TM light, and a second waveguide, where a portion of a second waveguide core is proximate to a first waveguide core to provide evanescent coupling. The first waveguide core is formed from one of a first core structure or a second core structure, and the second waveguide core is formed from the other structure. The first core structure has an index of refraction n. The second core structure is formed as alternating layers providing an effective index of refraction for TE polarized light nand an effective index of refraction for TM polarized light n, where n<n<nsuch that one of TM or TE light is preferentially evanescently coupled between the first waveguide and the second waveguide.