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:
Nov. 15, 1994
Filed:
Dec. 29, 1993
Applicant:
Inventors:
Hui-Pin Hsu, Northridge, CA (US);
Ronald B Chesler, Woodland Hills, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04L / ;
U.S. Cl.
CPC ...
359341 ; 359134 ;
Abstract
A bi-directional erbium doped fiber (EDF) optical fiber amplifier (50) employing two separate EDF amplifier channels (52, 62) for two counter-propagating signals allows the optimization of each individual signal channel for efficient bi-directional optical signal repeater performance. The pump sources (53, 63) for each EDF channel (52, 62) can be switched on and off independently, to serve as an in-line signal switch, without affecting another signal channel.