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:
Sep. 15, 2020
Filed:
May. 09, 2018
Applicant:
Google Llc, Mountain View, CA (US);
Inventors:
Ryohei Urata, San Carlos, CA (US);
Lieven Verslegers, San Francisco, CA (US);
Hong Liu, Palo Alto, CA (US);
Daoyi Wang, San Jose, CA (US);
Assignee:
Google LLC, Mountain View, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/28 (2006.01); G02B 27/09 (2006.01); G02B 6/126 (2006.01); G02B 6/10 (2006.01); G02B 6/27 (2006.01); G02F 1/09 (2006.01); G02B 5/30 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
G02B 27/283 (2013.01); G02B 5/3083 (2013.01); G02B 6/105 (2013.01); G02B 6/126 (2013.01); G02B 6/272 (2013.01); G02B 6/2773 (2013.01); G02B 27/0977 (2013.01); G02F 1/093 (2013.01); G02B 6/27 (2013.01); G02B 6/4213 (2013.01); G02B 6/4246 (2013.01);
Abstract
A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.