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. 16, 1990
Filed:
Jun. 16, 1989
Applicant:
Inventors:
Leonard J Andrews, Wayland, MA (US);
William J Miniscalco, Sudbury, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; C03C / ;
U.S. Cl.
CPC ...
350 9634 ; 350 9629 ; 372-6 ; 372 40 ; 501 37 ; 501 40 ; 501900 ;
Abstract
Glass compositions for high efficiency erbium.sup.3+ -doped optical fiber lasers, amplifiers and superluminescent sources are optimized for pumping by high power solid state lasers in the vicinity of 800 nm to provide amplified signals in wavelengths between 1.5 and 1.7 microns, a principal telecommunications window. A number of suitable host glasses for doping with erbium 3+ are identified wherein the excited state absorption/ground state absorption intensity ratio calculated at 800 nm is 1.00 or less.