Braun, R.-P.R.-P.BraunLudwig, R.R.LudwigMolt, R.R.Molt2022-03-082022-03-081986https://publica.fraunhofer.de/handle/publica/314593A laboratory ten-channel coherent fibre optic broadband transmission system including an optical traveling wave amplifier is reported. The amplified (+6 dB) carriers, having a frequency spacing of 6 GHz, are demultiplexed by a tunable heterodyne receiver which has a sensitivity of -42 dBm at a bit error rate of 10-9.enbroadband networkslight coherenceoptical fibresoptical linksreceiverssemiconductor junction lasersten channel coherent optic fire systemberlaser diodesoptical traveling wave amplifierbroadband transmission systemfrequency spacingdemultiplexedtunable heterodyne receiversensitivitybit error rate6 GHz621conference paper