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:
May. 22, 2020
Applicant:
Rockley Photonics Limited, Altrincham, GB;
Inventors:
Adam Scofield, Los Angeles, CA (US);
Gerald Byrd, Shadow Hills, CA (US);
Aaron John Zilkie, Pasadena, CA (US);
Assignee:
Rockley Photonics Limited, Altrincham, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/09 (2006.01); G02F 1/095 (2006.01); G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0955 (2013.01); G02F 1/0136 (2013.01);
Abstract
An optical isolator on a silicon photonic integrated circuit. The optical isolator comprising: a polarization splitter; a polarization rotator; and a Faraday rotator. The Faraday rotator comprises: one or more magnets providing a magnetic field; and a silicon spiral delay line. The silicon spiral delay line being formed from a silicon waveguide shaped into a spiral region having no built-in phase shifters and a central region within the spiral region. The central region having no more than a total of 180 degree of phase shifters.