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:
Mar. 01, 1994
Filed:
Nov. 13, 1992
Applicant:
Inventors:
Herve Fevrier, Massy, FR;
Jean-Francois Marcerou, Courcouronnes, FR;
Jean Hervo, Draveil, FR;
Serge Artigaud, Grigny, FR;
Assignee:
GEC Alsthom SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G01K / ;
U.S. Cl.
CPC ...
374131 ; 25022711 ; 385 12 ; 374161 ;
Abstract
An optical fiber temperature sensor including an optical fiber (1) which has a mirror (3) at its end, and which is associated with temperature-sensitive means, means for launching a signal into said fiber and means for receiving the signal reflected by said mirror back along the fiber, said temperature-sensitive means being a section of amplifying optical fiber (10) bonded to said optical fiber (1), cooperating with a light pump source, and doped with a chosen rare-earth element.