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:
Jul. 09, 2019
Filed:
Dec. 19, 2017
Applicant:
Neophotonics Corporation, San Jose, CA (US);
Inventors:
Kenneth McGreer, Livermore, CA (US);
Calvin Ho, San Jose, CA (US);
Assignee:
NeoPhotonics Corporation, San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/01 (2006.01); G02F 1/225 (2006.01); G02F 1/21 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0147 (2013.01); G02F 1/225 (2013.01); G02F 1/2257 (2013.01); G02F 2001/212 (2013.01); G02F 2201/06 (2013.01); G02F 2202/09 (2013.01); G02F 2203/48 (2013.01); G02F 2203/50 (2013.01);
Abstract
Energy efficient thermo-optic phase shifters have a configuration with two sections of a waveguide adjacent for heating by a common heater. A loop section can connect the two heated waveguide sections. Further improved efficiency can be achieved in which the heated sections are curved to allow closer placement of the adjacent waveguides. The heater can be curved to follow the configuration of the curved heated waveguide sections. Energy efficiency gains can be up to approximately a factor of two over corresponding traditional thermo-optical phase shifter designs.