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White Rabbit Multi-Point Time Distribution Network

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posted on 2021-11-29, 06:18 authored by Erik DierikxErik Dierikx, Yan Xie, Adrian Savencu, José Lopez, José Luis Gutiérrez
A nanosecond-accuracy, scalable, multi-point time- and frequency dissemination has been set up in an existing DWDM optical fiber network spanning approximately 200 km, using the White Rabbit (WR) Precision Time Protocol (PTP). Presented novelties in this paper are: a performance study of 5 cascaded WR switches allowing a wide fan-out; reference delay compensation ensuring that the time received by the user is synchronized with the reference timescale within a few nanosecond offset; experiments with a master clock priority algorithm for redundant operation and experimental results of hold-over performance.


This project 17IND14 WRITE has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.


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