Roberto Gaudino and  Antonino Nespola and  Dario Zeolla and  Stefano Straullu and  Vittorio Curri and  Gabriella Bosco and  Roberto Cigliutti and  Stefano Capriata and  Paolo Solina.,  Coherent PON for NG-PON2: 40Gbps Downstream Transmission with 40dB Power Margin using Commercial DFB Lasers and no Optical Amplification.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 1584 - 1587
    [viewed 07 July 2022]. Available from: https://publications.waset.org/pdf/3781.