| 摘要 |
This application relates to a method for compensating optical transmission impairments of at least one fiber link in an optical transmission system, wherein the optical transmission impairments comprising at least chromatic dispersion and fiber nonlinearities cause distortions to at least one signal transmitted through the at least one fiber link. The method comprises: estimating an amount of chromatic dispersion of the at least one fiber link, applying a first filtering step for compensating for an amount of fiber nonlinearities of the at least one fiber link, and applying a second filtering step for compensating for the amount of chromatic dispersion of the at least one fiber link. The first filtering step for compensating for the amount of fiber nonlinearities is applied prior to the second filtering step for compensating for the amount of chromatic dispersion. The step of applying the first filtering step comprises: obtaining power of the at least one signal transmitted through the at least one fiber link, filtering the obtained power of the at least one signal based on the estimated amount of chromatic dispersion of the at least one fiber link, and applying, based on the filtered obtained power of the at least one signal, a phase rotation to the at least one signal for compensating for the amount of fiber nonlinearities. The application further relates to a device for compensating optical transmission impairments. |
