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:
Jun. 28, 1994
Filed:
Dec. 21, 1992
Applicant:
Inventor:
Markus-Christian Amann, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 20 ; 372 50 ;
Abstract
Tunable laser diode, whereby two waveguide lasers (5, 7) are arranged transversely relative to one another. A separate current injection into each of the two waveguide layers (5, 7) is possible due to an intermediate layer (6) situated between these waveguide layers (5, 7). An absorber layer (4) periodically interrupted in a longitudinal direction is arranged transversely relative to the layer plane, resulting in forward coupling with an imaginary degree of coupling.