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:
Jan. 14, 2003
Filed:
Dec. 28, 2000
Optical reference element and procedure for the spectral calibration of an optical spectrum analyzer
Applicant:
Inventor:
Eberhard Loecklin, Reutlingen, DE;
Assignee:
Wavetek Wandel Gotermann Eningen GmbH, Eningen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/10 ;
U.S. Cl.
CPC ...
G01J 1/10 ;
Abstract
An optical reference signal with a gas sealed in a space, an optical fiber and a lens collecting the light beam exiting the optical fiber before the front end of the space and a photodetector at the back end of the space, which can be connected with an evaluation device. Such an optical reference element makes it possible to use cost-effective and readily available components to provide a reference signal for calibrating an optical spectrum analyzer, for example. The optical reference element is connected to the output of the optical device.