Duobinary RZ and Dark RZ signals generation using only one differential Mach-Zehnder modulator

摘要

We propose a novel scheme to generate duobinary RZ and dark RZ signals. It needs only one differential Mach-Zehnder modulator (DMZM), which can adjust the operating point of the modulator to generate duobinary RZ and dark RZ signals easily. It is more cost-effective compared to conventional schemes due to its simple configuration.