(19)
(11) EP 1 441 454 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
12.09.2012 Bulletin 2012/37

(45) Mention of the grant of the patent:
27.06.2012 Bulletin 2012/26

(21) Application number: 04001320.3

(22) Date of filing: 22.01.2004
(51) International Patent Classification (IPC): 
H04B 10/18(2006.01)
 H04B 10/17(2006.01)

(54)

Optical amplifier having polarization mode dispersion compensation function

Optischer Verstärker mit Kompensation der Polarisationsmodendispersion

Amplificateur optique avec fonction de compensation de la dispersion modale de polarisation

(84) Designated Contracting States:
DE FR GB

(30) Priority: 24.01.2003 JP 2003015915

(43) Date of publication of application:
28.07.2004 Bulletin 2004/31

(73) Proprietor: FUJITSU LIMITED
Kawasaki-shi, Kanagawa 211-8588 (JP)

(72) Inventors:
  • Onaka, Miki c/o Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Hayashi, Etsuko c/o Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Sugaya, Yasushi c/o Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)

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


(56) References cited: : 
JP-A- 2000 031 903
US-A1- 2001 008 452
US-A1- 2002 172 486
 US-A- 5 473 457
US-A1- 2002 048 062
   
  • TAKAHASHI T ET AL: "Automatic compensation technique for timewise fluctuating polarisation mode dispersion in in-line amplifier systems" ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 30, no. 4, 17 February 1994 (1994-02-17), pages 348-349, XP006000245 ISSN: 0013-5194
  • YUKOU MOCHIDA ET AL: "Technology-Oriented Review and Vision of 40-Gb/s-Based Optical Transport Networks" JOURNAL OF LIGHTWAVE TECHNOLOGY, XX, XX, vol. 20, no. 12, December 2002 (2002-12), XP011064571 ISSN: 0733-8724
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).