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:
Jul. 11, 2006
Filed:
Nov. 14, 2003
Ulrich Kallmann, Tübingen, DE;
Bernd Nebendahl, Ditzingen, DE;
Wolf Steffens, Herrenberg, DE;
Emmerich Mueller, Aidlingen, DE;
Hansjoerg Haisch, Altdorf, DE;
Jochen Schwarz, Stuttgart, DE;
Ulrich Kallmann, Tübingen, DE;
Bernd Nebendahl, Ditzingen, DE;
Wolf Steffens, Herrenberg, DE;
Emmerich Mueller, Aidlingen, DE;
Hansjoerg Haisch, Altdorf, DE;
Jochen Schwarz, Stuttgart, DE;
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
An apparatus and method of controlling an optical signal includes superimposing at least one optical reference signal and the optical signal to obtain at least one interference signal having an actual beat frequency, and pre-selecting one or more of the at least one interference signals using a predetermined bandwidth and a filter characteristic that is asymmetric with respect to an actual frequency of the optical signal, to determine a position of the optical signal relative to the at least one optical reference signal.