Title of Invention

LOOPED OPTICAL NETWORK WITH ASE LIGHT RECIRCULATION AND LINK AND NETWORK SURVIVABILITY CONTROL SYSTEM

Abstract A looped WDM optical network comprises an optical loop with optical amplifiers (12,16) between the sections of the loop (11) and with ASE recirculation in the loop. At a point of the loop a laser beam is injected and allowed to circulate in the loop with the laser beam being centered around a &lgr;LINK wavelength where it is desired that a lasing peak be generated. This supplies high network strength in terms of section loss variations and greatly improves the OSNR of the WDM signal. High network survivability is also achievable.
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Documents:

332-mumnp-2006-abstract(08-12-2008).doc

332-mumnp-2006-abstract(08-12-2008).pdf

332-mumnp-2006-assignment(07-05-2007).pdf

332-mumnp-2006-cancelled pages(08-12-2008).pdf

332-mumnp-2006-claims(granted)-(08-12-2008).doc

332-mumnp-2006-claims(granted)-(08-12-2008).pdf

332-MUMNP-2006-CORRESPONDENCE(26-12-2008).pdf

332-mumnp-2006-correspondence(ipo)-(29-01-2009).pdf

332-mumnp-2006-drawing(08-12-2008).pdf

332-mumnp-2006-form 1(08-12-2008).pdf

332-mumnp-2006-form 1(11-05-2007).pdf

332-MUMNP-2006-FORM 1(26-12-2008).pdf

332-mumnp-2006-form 18(04-09-2006).pdf

332-mumnp-2006-form 2(granted)-(08-12-2008).doc

332-mumnp-2006-form 2(granted)-(08-12-2008).pdf

332-mumnp-2006-form 26(11-05-2007).pdf

332-mumnp-2006-form 26(28-07-2006).pdf

332-mumnp-2006-form 3(08-12-2008).pdf

332-mumnp-2006-form 3(22-03-2006).pdf

332-mumnp-2006-form 3(31-08-2006).pdf

332-mumnp-2006-form 5(08-12-2008).pdf

332-mumnp-2006-form 6(11-05-2007).pdf

332-mumnp-2006-form-pct-isa-210(11-05-2007).pdf

332-mumnp-2006-petition under rule 137(10-12-2008).pdf

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Patent Number 228243
Indian Patent Application Number 332/MUMNP/2006
PG Journal Number 10/2009
Publication Date 06-Mar-2009
Grant Date 29-Jan-2009
Date of Filing 24-Mar-2006
Name of Patentee ERICSSON AB
Applicant Address (ORGANISATION NUMBER 556056-6258) TORSHAMNSGATEN 23,STOCKHOLM
Inventors:
# Inventor's Name Inventor's Address
1 BOGONI, ANTONELLA Via Conciliazione, 61, I-45100 Montova (MN)
2 SACCHI, GIOVANNI Viale Sarca 96, I-20125 Milano
3 D'ERRICO, ANTONIO Via Legnano, 120, I- San Severo (FG)
4 DI PASQUALE, FABRIZIO P.le Martin Luther King 1c, I-56100 Pisa
PCT International Classification Number H04B10/17
PCT International Application Number PCT/EP2004/052127
PCT International Filing date 2004-09-10
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 MI2003A001742 2003-09-11 Italy