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:
Nov. 24, 2020
Filed:
Jan. 11, 2018
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Youichi Akasaka, Plano, TX (US);
Tadashi Ikeuchi, Plano, TX (US);
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/10 (2006.01); G02B 6/02 (2006.01); H01S 3/30 (2006.01); G02F 1/365 (2006.01); H04J 14/02 (2006.01); H01S 3/067 (2006.01); H01S 3/00 (2006.01); H01S 3/13 (2006.01); H04B 10/67 (2013.01);
U.S. Cl.
CPC ...
H01S 3/10053 (2013.01); G02B 6/02085 (2013.01); G02B 6/02195 (2013.01); G02F 1/365 (2013.01); H01S 3/1003 (2013.01); H01S 3/302 (2013.01); H01S 3/0078 (2013.01); H01S 3/06758 (2013.01); H01S 3/1307 (2013.01); H04B 10/67 (2013.01); H04J 14/0201 (2013.01);
Abstract
An FBG element is configured to apply a phase shift to at least one of an input optical signal, a first pump light, and an idler signal between stages of a phase sensitive amplifier. The FBG element is apodized using a trapezoidal apodization function over the length of the first FBG element to enable tuning of the phase shift over a range of 2π radians.
Akasaka, Youichi. (2020). Phase shifter for an optical phase-sensitive amplifier (U.S. Patent No. 10847945). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10847945
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile