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:
Jan. 30, 2024
Filed:
Sep. 20, 2023
Applicant:
Beijing Zhongke Guoguang Quantum Technology Co., Ltd., Beijing, CN;
Inventors:
Assignee:
BEIJING ZHONGKE GUOGUANG QUANTUM TECHNOLOGY CO., LTD., Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/61 (2013.01); G02B 6/27 (2006.01);
U.S. Cl.
CPC ...
H04B 10/614 (2013.01); G02B 6/272 (2013.01); G02B 6/2773 (2013.01); H04B 10/612 (2013.01); H04B 10/6151 (2013.01);
Abstract
The application discloses a polarization independent DQPSK demodulation integrated optical chip, which comprises a first beam splitter, a first polarization beam splitter rotator, a second beam splitter, a third beam splitter, a first quarter-wave plate, a first delayed optical waveguide, and a second polarization beam splitter rotator that are integrated on a same substrate.