公开(公告)号：US20180205461A1

公开(公告)日：2018-07-19

申请号：US15406027

申请日：2017-01-13

Applicant: ADVA Optical Networking SE

Inventor： Mohammad ALFIAD ,  Sorin TIBULEAC ,  Cornelius FUERST ,  Christophe MEYER

IPC: H04B10/2513 ,  H04J14/02

CPC classification number: H04B10/2513 ,  H04B10/25133 ,  H04J14/02

Abstract: A chromatic dispersion compensation apparatus for automatic compensation of chromatic dispersion of signals transmitted via an optical link at predetermined wavelengths of WDM channels within a predetermined band. A tapping unit taps optical signals received by the chromatic dispersion compensation apparatus via the optical link at predetermined wavelengths and supply them to an optical coherent receiver adapted to tune its local oscillator to WDM channels to generate corresponding analog electrical signals of the WDM channels which are sampled by an analog digital converter to provide digital signal samples of WDM channels processed by a digital signal processor of the chromatic dispersion compensation apparatus to calculate an estimate residual chromatic dispersion value of the received optical signals. A tuneable dispersion compensation module is set to perform optical compensation of a residual chromatic dispersion of the received optical signals depending on calculated estimate residual chromatic dispersion value of the received optical signals.

公开(公告)号：US20180212704A1

公开(公告)日：2018-07-26

申请号：US15411490

申请日：2017-01-20

Applicant: ADVA Optical Networking SE

Inventor： Paul MORKEL ,  Sorin TIBULEAC

IPC: H04J14/02 ,  H04B10/27

CPC classification number: H04J14/0227 ,  H04B10/27 ,  H04J14/0224 ,  H04J14/026 ,  H04J14/0279 ,  H04J14/0283 ,  H04J14/0284

Abstract: A wavelength division multiplexing, WDM, network comprising an apparatus adapted to manage a frequency spectrum in the wavelength division multiplexing, WDM, network, the apparatus comprising an adjustment unit adapted to adjust a frequency offset between carriers for each individual carrier depending on performance characteristics of the individual carriers.