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:
Feb. 13, 2018
Filed:
Apr. 10, 2014
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Noriaki Iwaguchi, Yokohama, JP;
Masuo Iida, Osaka, JP;
Kumiko Tachibana, Yokohama, JP;
Takashi Takada, Yokohama, JP;
Takashi Fujii, Yokohama, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka-shi, Osaka, JP;
Abstract
Provided is a coated optical fiber excellent in both characteristics of the microbending loss resistance and the low-temperature characteristic. The coated optical fibercomprises an optical fiberthat has a cladding layer composed of glass formed on an outer periphery of a glass core, a primary coating layerthat coats an outer periphery of the optical fiber, and a secondary coating layerthat coats an outer periphery of the primary coating layer, wherein the primary coating layerhas a Young's modulus of 1.2 MPa or less, the secondary coating layerhas a Young's modulus of 700 MPa or more, and the primary coating layercontains tin in a content of 70 ppm or less.