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:
Mar. 27, 2001
Filed:
Dec. 23, 1998
Michitaka Okuta, Yokohama, JP;
Hiromi Ajima, Yokohama, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
In an optical amplifier wherein pumping laser light and signal laser light are multiplexed and supplied as input to a fiber doped with a rare earth element, by decreasing the number of connected sections, loss due to the connection to the rare earth-doped fiber is decreased, thereby to improve the amplifying characteristics and to simplify the production step. a pair of fibers, each which is connected by a transmitting optical fiber,and a rare earth-doped fiber,, at a connected sections, are heated and fused with each other are aligned in part length to a fused jointed portion,which is stretched in the vicinity of the connected section,on the rare earth-doped fiber side, thereby forming an optical coupler.