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:
Dec. 06, 2005
Filed:
Sep. 10, 2001
Wei-ping Huang, Spanga, SE;
Tomas Adeback, Järfälla, SE;
Jan Magnusson, Taby, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
In a device () for continuously varying the extinction ratio, ER, a laser diode () is connected to a first end of a PZ fiber (). At a second end, the PZ fiber is connected to a connector (). At the other end of the connector a PM fiber () is connected. The two fibers meet in the connector, which means that opposite end facets of the fibers are located at a very close distance of each other. A rotation is produced by a rotator (), mechanically coupled to the connector. The device can be used for: selecting a desired ER of the PM fiber; achieving high accuracy of angular alignment between the principal axes of two PM fibers (); evaluating the quality of angular alignment of a splice between two PM fibers made by a splicer; and setting the adjustment/calibration of a PM fiber.