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:
Nov. 09, 2004
Filed:
Apr. 15, 2003
Sasan Esmaeili, Solna, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
To determine the type of unknown optical fiber, an automatic fiber fusion-type splicer is used having movable clamps, electrodes, camera devices and background illumination, coupled to electronic circuits containing control, driver, and interface circuits. A fiber portion is imaged to allow the fiber core to be distinguished in the captured image, both when the fiber is cold and when it is heated. From a first fiber picture in a heated state, a first light intensity profile is determined along a line perpendicular to the fiber. The profile derivative is compared to derivatives of known light intensity profiles. Similar procedures are performed for the cold fiber. Based on the comparing operations, the type of the tested fiber is determined.