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:
Feb. 10, 1998
Filed:
Nov. 20, 1996
Applicant:
Inventors:
Pierre Doussiere, Saint Germain les Arpajons, FR;
Isabelle Riant, Palaiseau, FR;
Assignee:
Alcatel Optronics, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; G02B / ; H01L / ;
U.S. Cl.
CPC ...
372102 ; 372-7 ; 372 19 ; 372 43 ; 372 92 ; 372 98 ; 385 49 ; 385 37 ; 385 88 ; 437129 ;
Abstract
In a laser device, notably for optical pumping, the wafer includes an expansion segment adjacent the exit to prevent degradation of the exit facet of the semiconductor wafer that constitutes the amplifying part of the laser. The other facet is reflective and a Bragg grating is formed in a coupling fiber disposed near the exit facet. Applications include optical pumping of erbium-doped fiber amplifiers.