(19)
(11) EP 1 508 216 A2

(12)

(88) Date of publication A3:
22.04.2004

(43) Date of publication:
23.02.2005 Bulletin 2005/08

(21) Application number: 03757280.7

(22) Date of filing: 21.05.2003
(51) International Patent Classification (IPC)7: H04J 14/02
(86) International application number:
PCT/US2003/016193
(87) International publication number:
WO 2003/104849 (18.12.2003 Gazette 2003/51)
(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

(30) Priority: 29.05.2002 US 158523
29.05.2002 US 158348
01.10.2002 US 262818

(71) Applicant: FUJITSU LIMITED
Kawasaki-shi,Kanagawa 211-8588 (JP)

(72) Inventors:
  • KINOSHITA, Susumu
    Plano, TX 75024 (US)
  • GUMASTE, Ashwin, Anil
    Richardson, TX 75080 (US)
  • TAKEGUCHI, Koji
    Kawasaki,Kanagawa (JP)

(74) Representative: HOFFMANN - EITLE 
Patent- und RechtsanwälteArabellastrasse 4
81925 München
81925 München (DE)

   


(54) OPTICAL RING NETWORK WITH NODES AND METHOD