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:
May. 27, 2025
Filed:
Jun. 10, 2021
Sumitomo Electric Industries, Ltd., Osaka, JP;
Chonde Tei, Utsunomiya, JP;
Tomoaki Hatanaka, Utsunomiya, JP;
Yuki Kawaguchi, Osaka, JP;
Tomoko Terauchi, Utsunomiya, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
An optical fiber bending loss measuring method for obtaining a bending loss of an optical fiber by applying bending to the optical fiber with mandrels provided between a feeding portion and a fixing portion and arranged alternately in a longitudinal direction of the optical fiber. The method includes fixing the optical fiber to the fixing portion by passing the optical fiber fed out from the feeding portion between the mandrels, moving the movable mandrel to a forward position and applying bending to the optical fiber by holding the optical fiber between the adjacent mandrels, and obtaining the bending loss of the optical fiber while the bending is applied to the optical fiber.