公开(公告)号：US20190199442A1

公开(公告)日：2019-06-27

申请号：US16286147

申请日：2019-02-26

Applicant: Xieon Networks S.à.r.l.

Inventor： Alessandro BIANCIOTTO ,  Stefano CALABRÓ ,  Maxim KUSCHNEROV ,  Mahdi MEZGHANNI ,  Antonio NAPOLI ,  Bernhard SPINNLER

IPC: H04B10/588 ,  H04B10/61 ,  H04B10/079 ,  H04B10/50 ,  G02F1/225

CPC classification number: H04B10/588 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/0795 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/61

Abstract: Disclosed herein is a dual parallel Mach-Zehnder-modulator (DPMZM) device comprising a DPMZM 10 having first and second inner MZMs arranged parallel to each other. The first inner MZM generates an in-phase component EI of an optical signal in response to a first driving voltage VI, and the second inner MZM generates a quadrature component EQ of said optical signal in response to a second driving voltage VQ. Further disclosed is a calculation unit 52 configured for receiving an in-phase component yI and a quadrature component yQ of a desired base-band signal, and for calculating pre-distorted first and second driving voltages VI, VQ. The calculation of the pre-distorted first and second driving voltages VI, VQ is based on a model of said DPMZM 10 accounting for I-Q cross-talk, and using an algorithm that determines said first and second driving voltages VI, VQ each as a function of both of said in-phase and quadrature components yI, yQ of said base-band signal.