(19)
(11) EP 1 332 387 A2

(12)

(88) Date of publication A3:
01.05.2003

(43) Date of publication:
06.08.2003 Bulletin 2003/32

(21) Application number: 01938621.8

(22) Date of filing: 13.06.2001
(51) International Patent Classification (IPC)7G02B 6/22, G02B 6/16
(86) International application number:
PCT/JP0104/982
(87) International publication number:
WO 0202/1172 (14.03.2002 Gazette 2002/11)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 01.09.2000 JP 2000265736

(71) Applicant: Sumitomo Electric Industries, Ltd.
Osaka-shi,Osaka 541-0041 (JP)

(72) Inventors:
  • KATO, Takatoshi,Yokohama Works of Sumitomo El Ind
    Yokohama-shi,Kanagawa 224-8588 (JP)
  • HIRANO, Masaaki,Yokohama Works of Sumitomo El Ind
    Yokohama-shi,Kanagawa 244-8588 (JP)

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

   


(54) NEGATIVE-DISPERSION OPTICAL FIBER AND OPTICAL TRANSMISSION LINE INCORPORATING THE SAME