Patents Examined by Lin Phyowai
  • Control method of wavelength dispersion compensator, and wavelength dispersion compensator
    Patent number: 7418206
    Abstract: It is an object of the present invention to provide a control technique for reducing wavelength dependence of wavelength dispersion values and also for suppressing a change in wavelength transmission characteristic with a temperature variation or the like, in a VIPA-type wavelength dispersion compensator.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: August 26, 2008
    Assignee: Fujitsu Limited
    Inventor: Yuichi Kawahata