(19)
(11) EP 1 488 548 A2

(12)

(88) Date of publication A3:
05.02.2004

(43) Date of publication:
22.12.2004 Bulletin 2004/52

(21) Application number: 03713955.7

(22) Date of filing: 07.03.2003
(51) International Patent Classification (IPC)7H04B 10/12
(86) International application number:
PCT/US2003/006967
(87) International publication number:
WO 2003/076979 (18.09.2003 Gazette 2003/38)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 08.03.2002 US 95303
28.06.2002 US 186561
17.01.2003 US 346960

(71) Applicant: LIGHTWAVE ELECTRONICS
Mountain ViewCA 94043 (US)

(72) Inventors:
  • ARBORE, Mark, A.
    Los Altos, CA 94022 (US)
  • ZHOU, Yidong
    Mountain View CA 94043 (US)
  • KMETEC, Jeffrey, D
    Palo Alto, CA 94301 (US)

(74) Representative: Bloch, Gérard et al
Bloch & AssociésConseils en Propriété Industrielle2 Square de l'Avenue du Bois
75116 Paris
75116 Paris (FR)

   


(54) COMMUNICATION SYSTEM AND SPLIT-BAND AMPLIFYING APPARATUS USING A DEPRESSED-PROFILE FIBER AMPLIFIER