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. 07, 1992
Filed:
Sep. 14, 1990
Applicant:
Inventors:
Bernd Noll, Munich, DE;
Uwe Eberhardt, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385-3 ;
Abstract
An apparatus for generating optical waves which are polarized orthogonally relative to each other from an incoming optical wave for enabling polarization-independent, optical superheterodyne reception has an integrated optical Mach-Zender interferometer which is preceded by an integrated optical directional coupler or by a waveguide fork and is followed by an integrated optical directional coupler.