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:
Jun. 23, 2009
Filed:
Dec. 26, 2007
Yasuo Nakajima, Tokyo, JP;
Kouji Mochizuki, Tokyo, JP;
Hiroki Tanaka, Tokyo, JP;
Tetsuo Sato, Tokyo, JP;
Yasuo Nakajima, Tokyo, JP;
Kouji Mochizuki, Tokyo, JP;
Hiroki Tanaka, Tokyo, JP;
Tetsuo Sato, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
A colored optical fiber whose transmission loss hardly increases even in a high humidity condition or water-immersed condition is provided. The colored optical fiber according to the present invention is a colored optical fiber having a colored coating layer on a circumference of an optical fiber having at least two coating layers on a circumference of a glass optical fiber, characterized in that a difference in each amount of thermal expansion in an outer diameter direction between the optical fiber and a coating layer obtained by removing the glass optical fiber from the optical fiber in a temperature range from −100° C. to 100° C. is 1.8 μm or less.