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:
Jun. 04, 2024
Filed:
Oct. 26, 2021
Applicant:
The Chinese University of Hong Kong, Shatin, CN;
Inventors:
Xuetong Zhou, Xingtai, CN;
Hon Ki Tsang, Ma On Shan, CN;
Assignee:
The Chinese University of Hong Kong, Hong Kong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/124 (2006.01); G02B 6/34 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02B 6/124 (2013.01); G02B 6/34 (2013.01); G02B 6/29359 (2013.01);
Abstract
An output coupler can be used to couple multiple channels of light from a semiconductor waveguide to an optical fiber for wavelength division multiplexing. To couple light of a wide bandwidth (e.g., equal to or greater than 100 nm), two symmetrical gratings on two sides of a Fabry Perot cavity is used. The two symmetrical gratings are optimized to both reflect light for a Fabry Perot resonator and couple light out of the semiconductor waveguide.