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. 09, 2003
Filed:
Feb. 12, 2001
Reinhold Noe, Paderborn, DE;
Siemens Aktiengesellschaft, , DE;
Abstract
For characterizing polarization transformers or PMD compensators, a polarization transformer to be characterized is operated as a mode converter with full mode conversion and variable orientation. A polarization control sees to it that a further polarization transformer assures the desired, overall polarization transformation. Conclusions about the precision with which the polarization transformer to be characterized works can be drawn from the nature and strength or, too, from the absence of changes of control signals of this further polarization transformer, and this can be improved. The method is particularly suited for the automatic follow-up of DC drift in polarization transformers or PMD compensators with lithium niobate components.