公开(公告)号：US20230254037A1

公开(公告)日：2023-08-10

申请号：US18101768

申请日：2023-01-26

Applicant: ADVA Optical Networking SE

Inventor： Tobias Fehenberger ,  Henrik Enggaard Hansen

IPC: H04B10/079 ,  H04B10/077

CPC classification number: H04B10/07953 ,  H04B10/0775

Abstract: The present invention provides a performance monitoring device, an optical signal network with performance monitoring, and a performance monitoring method. The performance monitoring device (100) comprises a coherent receiver (10), an analog-to-digital-converter, ADC (20), a digital signal processing module, DSPM (30), and a noise correction module, NCM (40),
the receiver (10) having a second bandwidth that is smaller than the first bandwidth (BW1) such that the receiver (10) is configured to output an electrical analog signal (72) with the second bandwidth based on the received optical signal (71) having the first bandwidth,

the ADC (20), being configured to generate from the electric analog signal (72) a digital input signal (73) with the second bandwidth;

the DSPM (30) being configured to generate a raw performance monitoring metric, RPMM (74), based on the digital input signal (73);

wherein the NCM (40) is configured to generate a performance monitoring metric, PMM (75), based on the digital input signal (73) by compensating distortion in the RPMM (74) caused by the coherent receiver (10) having a smaller bandwidth than the optical signal (71).

公开(公告)号：US20220385370A1

公开(公告)日：2022-12-01

申请号：US17742005

申请日：2022-05-11

Applicant: ADVA Optical Networking SE

Inventor： Tobias Fehenberger

IPC: H04B10/27 ,  H04B10/548

Abstract: Provided is a method for determining actual values of one or more characteristics of a phase-modulated optical signal. The method includes the steps of acquiring the phase-modulated optical signal by a non-linear device; generating an electrical spectrum based on the acquired phase-modulated optical signal; and extracting actual values of one or more characteristics of the phase-modulated optical signal from the electrical spectrum.

公开(公告)号：US20230370255A1

公开(公告)日：2023-11-16

申请号：US18131693

申请日：2023-04-06

Applicant: ADVA Optical Networking SE

Inventor： Tobias Fehenberger ,  Hans Schmiedel

IPC: H04L9/08 ,  H04B10/70 ,  H04L1/00

CPC classification number: H04L9/0852 ,  H04B10/70 ,  H04L1/004

Abstract: The subject matter described herein provides a method and a system for continuous-variable quantum key distribution, CVQKD, between a sender sub-system and a receiver sub-system. The method includes transmitting a quantum key distribution, QKD, signal from a quantum communication transmitter to a quantum communication receiver over a quantum communication channel. The method further includes performing post-processing including forward error correction, FEC as a part of reverse reconciliation between the receiver sub-system and the sender sub-system, where erroneous frames are discarded for key establishment. A value of the reconciliation efficiency, VRE β, is set to be larger than 1.