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:
Nov. 12, 1991
Filed:
Feb. 09, 1990
Applicant:
Inventor:
Karl-Ulrich Stein, Unterhaching, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; H04J / ;
U.S. Cl.
CPC ...
385 14 ; 385 24 ; 385 33 ; 385130 ; 359129 ;
Abstract
An apparatus for direct optical reception of a plurality of wavelengths which includes a substrate having a waveguide disposed thereon for conducting the wavelengths, a waveguiding wavelength demultiplexer being integrated on the substrate for spreading the wavelengths into separate channels extending to separate opto-electronic detectors which are preferably integrated on the substrate. The device further includes an integrated transmitter so the device is a bi-directional functional unit having both an integrated transmitter and integrated direct receiver.