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. 07, 1991
Filed:
Oct. 13, 1989
Applicant:
Inventor:
Masumi Fukuma, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9615 ; 350 9616 ;
Abstract
This invention is the method for manufacturing the fiber type coupler by extending at least two optical fibers having coatings thereof removed, along an optical axis while fusing the optical fibers to form a coupler member, is characterized by a step of adding a tension to the coupler member along the optical axis before the coupler member is fixed to a protective member.