Channel performance estimations with extended channel probingKaeval, Kaida; Griesser, Helmut; Grobe, Klaus; Elbers, Jörg-Peter; Tikas, Marko; Jervan, GertPhotonic Networks : 21th ITG-Symposium : 24-25 November 2020 : online2020 / p. 60-64 http://d-nb.info/1223037061 https://ieeexplore.ieee.org/document/9273755