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:
Apr. 13, 1999
Filed:
Mar. 06, 1997
Applicant:
Inventors:
Gerhard Heise, Munich, DE;
Achim Reichelt, Unterhaching, DE;
Herbert Michel, Munich, DE;
Reinhard Maerz, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 14 ; 385 27 ; 385 37 ;
Abstract
A device for the wavelength-related stabilization of an optical filter, particularly a wavelength-division multiplexer/demultiplexer, comprises a Bragg grating arranged in the proximity of the filter and a waveguide for supplying a fixed optical reference wavelength to the grating. The grating is regulated to either a maximum transmission and minimum reflection or a minimum transmission and maximum reflection of the reference wavelength by controlling the temperature of the grating and of the filter.