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:
Aug. 19, 2003
Filed:
Jan. 30, 2001
Kenji Tamano, Yokohama, JP;
Takashi Fujii, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical fiber coil of the present invention includes an optical fiber, a storing case which stores the coiled optical fiber therein, and a filler in the storing case. The filler directly comes into contact with the glass portion of the optical fiber or contact with a thin film coating of not more than 1 &mgr;m being formed on a surface of the glass portion and having a hydrogen intrusion suppressing function. According to the optical fiber coil of the present invention, since the filler directly comes into contact with the glass portion of the optical fiber, the microbend loss can be further suppressed and the transmission can be stable.