Patent ID: 11870553
Assignee: FUJITSU LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A fiber-optic communication system comprising:
a first fiber-optic communication apparatus;
a second fiber-optic communication apparatus; and
a fiber-optic transmission line connecting between the first fiber-optic communication apparatus and the second fiber-optic communication apparatus,
wherein the first fiber-optic communication apparatus or the second fiber-optic communication apparatus adjusts an optical power level of a WDM signal in a unit interval of frequency narrower than a channel bandwidth of the WDM signal, based on a first power spectrum of an unaffected WDM signal having been added in the first fiber-optic communication apparatus and having not yet travelled through the fiber-optic transmission line and a second power spectrum of the WDM signal having travelled through the fiber-optic transmission line and received at the second fiber-optic communication apparatus.