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:
Oct. 03, 2000
Filed:
Aug. 31, 1998
Applicant:
Inventors:
Beatrice Dagens, Paris, FR;
Christopher Janz, Issy-les-Moulineaux, FR;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 14 ; 385 45 ; 385 37 ;
Abstract
To increase its saturation threshold very strongly without degrading its gain, whilst remaining compatible with any semiconductor amplifier structure or technology, a semiconductor optical amplifier includes an input coupler having an input port and g output ports and an output coupler having g input ports and one output port. The q output ports of the input coupler are respectively connected to the q input ports of the output coupler by q semiconductor optical amplifiers having the same amplification characteristics. Applications include transmission of optical signals and to producing 'all optical' switching devices.