Zhu Yuzhu, Du Jiangbing, Shen Weihong, He Zuyuan
AVIC Aeronautical Radio Electronics Research Institute, Shanghai 200241, China.
State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
Sensors (Basel). 2022 Sep 26;22(19):7287. doi: 10.3390/s22197287.
Nonlinear distortion for single-sideband (SSB) signals will significantly reduce the performance of Kramers-Kronig (KK) receiver-based optical transmission. In this work, we present a proof-of-concept study of stimulated Brillouin scattering (SBS)-induced nonlinear distortion for 10 Gbaud and 28 Gbaud SSB QAM16 transmission over 80 km standard single mode fiber (SSMF) based on a KK receiver. Significantly reduced bit error rate (BER) has been experimentally observed due to the SBS and the threshold of SBS at about 7 dBm is detected for such an 80 km SSMF link. With left sideband (LSB) modulation of SSB, together with optical filtering, reduced SBS nonlinear distortion has been achieved with ~2 dB power tolerance improvement. The results reveal an important issue of SBS-induced nonlinear distortion, which would be of great significance for KK receiver-based optical transmission applications.
单边带（SSB）信号的非线性失真会显著降低基于克拉默斯 - 克勒尼希（KK）接收机的光传输性能。在这项工作中，我们针对基于KK接收机的10 Gbaud和28 Gbaud SSB QAM16信号在80 km标准单模光纤（SSMF）上传输时受受激布里渊散射（SBS）引起的非线性失真进行了概念验证研究。通过实验观察到，由于SBS，误码率（BER）显著降低，并且对于这样一个80 km的SSMF链路，检测到SBS阈值约为7 dBm。通过SSB的左边带（LSB）调制以及光滤波，实现了SBS非线性失真的降低，功率容限提高了约2 dB。研究结果揭示了SBS引起的非线性失真这一重要问题，这对于基于KK接收机的光传输应用具有重要意义。
