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. 30, 2009
Filed:
Mar. 29, 2007
Yoshihiro Arashitani, Tokyo, JP;
Toshiaki Ozawa, Tokyo, JP;
Kunihiko Yujoubou, Tokyo, JP;
Zoltan Varallyay, Budapest, HU;
Yoshihiro Arashitani, Tokyo, JP;
Toshiaki Ozawa, Tokyo, JP;
Kunihiko Yujoubou, Tokyo, JP;
Zoltan Varallyay, Budapest, HU;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
There are provided an optical fiber ribbon and optical fiber cable which suppress the deterioration of polarization mode dispersion and contribute to the increase of communication capacity in wavelength division multiplexing. An optical fiber ribbon includes a plurality of optical fiberstied in a bundle and a ribbon coating layerformed around the plurality of optical fibers to integrate the plurality of optical fibers, wherein the glass-transition temperature of the coating ranges from 80° C. to 130° C. and 'a' is 0.01 mmor less, where 'a' is a sectional area of the ribbon coating layerin a cross section in which outer half of the optical fiber at an edge of the ribbon and the coating of the optical fiber ribbon are taken along a line passing the center of the glass optical fiber positioned at one of edges of the ribbon out of the plurality of the optical fibers and being perpendicular to the horizontal plane of the optical fiber ribbon.