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. 02, 2006
Filed:
Nov. 24, 2003
Nahoko Nakamura, Kawasaki, JP;
Keiko Shiraishi, Kawasaki, JP;
Tomotaka Murase, Kawasaki, JP;
Susumu Ohneda, Kawasaki, JP;
Nahoko Nakamura, Kawasaki, JP;
Keiko Shiraishi, Kawasaki, JP;
Tomotaka Murase, Kawasaki, JP;
Susumu Ohneda, Kawasaki, JP;
Showa Electric Wire & Cable Co., Ltd., Kawasaki, JP;
Abstract
A large-diameter core optical fiber and a small-diameter core high optical fiber are fusion-spliced, and the spliced portion is heated to expand the core diameter of a core of the high optical fiber and form a spot size transition portion, whereby spot sizes of the optical fibers are matched and relative refractive index differences thereof are made substantially identical. Subsequently, the optical fiber is cut at an arbitrary position and the spliced portion and the spot size transition portion are placed inside a ferule with the large diameter core optical fiber arranged on a light incident and outgoing end face side of the ferrule to form an optical fiber component. The core diameter is expanded while monitoring transition loss of the splined portion to obtain an optical fiber component having an optimal spot size transition portion without an advanced technique and without increase in transition loss.