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. 20, 2007
Filed:
Apr. 18, 2006
Applicants:
Ryuichiro Goto, Sakura, JP;
Shoji Tanigawa, Sakura, JP;
Shoichiro Matsuo, Sakura, JP;
Kuniharu Himeno, Sakura, JP;
Inventors:
Ryuichiro Goto, Sakura, JP;
Shoji Tanigawa, Sakura, JP;
Shoichiro Matsuo, Sakura, JP;
Kuniharu Himeno, Sakura, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 (2006.01); G01N 21/00 (2006.01); H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of measuring polarization mode dispersion (PMD) of an optical fiber, includes estimating PMD when an optical fiber is formed as an optical cable, from a beat length when the optical fiber is wound around a bobbin, and an average coupling length when the optical fiber is formed as the optical cable.