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:
Apr. 29, 2003
Filed:
Jun. 06, 2000
Keiji Osaka, Kanagawa, JP;
Kenji Fujino, Kanagawa, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An exposed part of at least one of two optical fibers with different mode field distributions to be fusion spliced is heated by a burner, to thereby continuously vary its mode field distribution in the longitudinal direction of the optical fiber, and the exposed end part of at least one of the optical fibers is cleaved so that the mode field distributions at the splice end faces of the two optical fibers to be fusion spliced are substantially coincident with each other in configuration, the two optical fibers are fusion spliced, whereby low splice loss is realized. Thereafter, the heated portion of the optical fiber is subjected to a surface treatment by etching process using a hydrofluoric acid solution, whereby a deterioration of its mechanical strength is prevented. Surface tension of the acid causes the rim of the container to stand up.