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:
Apr. 27, 1999
Filed:
Apr. 26, 1996
Applicant:
Inventors:
Wenxin Zheng, Solna, SE;
Ola Hulten, Bromma, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
219383 ; 385 96 ; 385 97 ; 385140 ;
Abstract
Optical fiber attenuators are produced by splicing two fiber ends by melt-fusioning. The fiber ends are initially placed with a large lateral offset and the heating of the spliced portion is continued during a long time period to completely align the fiber ends, in particular the cores (3) and claddings (2) thereof, and to make material of the fibers cores (3) diffuse (23) into the neighbouring regions of the fiber claddings. By properly choosing the extended time for prolonged heating attenuators can be produced with a good repeatability. The prolonged heating period is significantly shortened by the use of a large initial offset.