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:
Jul. 28, 2026
Filed:
Mar. 04, 2024
Furukawa Electric Co., Ltd., Tokyo, JP;
Tsubasa Sasaki, Tokyo, JP;
Ryuichi Sugizaki, Tokyo, JP;
Masanori Takahashi, Tokyo, JP;
Yoshihiro Arashitani, Tokyo, JP;
FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;
Abstract
First, small-diameter portions of a plurality of optical fibers are inserted into a small-diameter capillary. Then, in a state in which the optical fibers are inserted into the small-diameter capillary until end faces of the optical fibers protrude slightly from an end face of the small-diameter capillary, the optical fibers and the small-diameter capillary are fixed together by using an adhesive. Next, a large-diameter capillary is fixed on an outer periphery of the small-diameter capillary. Then, end faces of the large-diameter capillary, the small-diameter capillary, and the optical fibers (the small-diameter portions) are polished collectively to mirror-finish the end faces of the optical fibers. Next, the large-diameter capillary is removed from the small-diameter capillary. In this way, an optical fiber bundle structure can be obtained.