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:
Jun. 13, 1995
Filed:
Jul. 30, 1993
Applicant:
Inventors:
Rainer Kossat, Aschau, DE;
Winfried Lieber, Offenburg, DE;
Manfred Loch, Munich, DE;
Gervin Ruegenberg, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 731 ; 25022721 ;
Abstract
An apparatus for performing measurements on a plurality of light waveguides comprises an arrangement for coupling distinguishably fed optical signals into each of the waveguides and measuring each of the distinguishable signals from the waveguides by using flexural couplers. In one embodiment, the distinguishable signals are obtained by utilizing modulated signals of different modulations, or different frequencies. In another embodiment, the signals are sequentially applied in a chronological order to the waveguides and are separately evaluated.