IEEE Xplore Digital Library Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference 2019 (CLEO-Europe/EQEC 2019) Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference 2019 (CLEO-Europe/EQEC 2019), OSA (ISBN: 978-1-7281-0469-0), Jun 2019, Munich, Germany. cj_p_62 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference 2019 (CLEO-Europe/EQEC 2019), OSA (ISBN: 978-1-7281-0469-0), Jun 2019, Munich, France. cj_p_62 CLEO/Europe-EQEC Munich CLEO/Europe-EQEC Munich, Jun 2020, Munich, France