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:
Dec. 20, 1994
Filed:
Feb. 01, 1993
Applicant:
Inventors:
Michael N Zervas, Southampton, GB;
Richard I Laming, Southampton, GB;
David N Payne, Southampton, GB;
Assignee:
University of Southampton, Hampshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; H01S / ; H01S / ;
U.S. Cl.
CPC ...
359341 ; 372-6 ; 372703 ;
Abstract
An optical amplifier comprises first (22) and second (24) lengths of erbium-doped fibre connected in series via an isolator 20 which reduces the transmission of backward-travelling ASE from the second length to the first length when pump power in inputted in to the first length.