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:
Jan. 17, 2012
Filed:
May. 20, 2009
George Buabbud, Schresbury, MA (US);
Cristiano Momatta, Milan, IT;
George BuAbbud, Schresbury, MA (US);
Cristiano Momatta, Milan, IT;
Other;
Abstract
A two-way optical amplifier system amplifies upstream and downstream optical signals in a passive optical network (PON). The downstream optical amplifier system includes an optical amplifier (EDFA), configured and arrange to amplify the downstream optical transport signal. The upstream optical amplifier operates in burst mode and includes an upstream transport fiber receiving an upstream optical transport signal, an optical source coupled to the upstream transport fiber to generate a saturating optical input signal that is combined with the optical transport signal and establishes a baseline reference level for AGC of the optical transport signal, a PON input receiving an incoming PON RF return signals, a first optical amplifier configured and arrange to amplify with AGC and equalize the PON RF return signals with the optical transport signal, a beam combiner configured and arranged to combine said equalized PON RF return signals with said optical transport signal, and a second optical amplifier configured and arranged to amplify the optical transport signal including said equalized PON RF return signals.