提出并通过实验验证了一种新颖的带内光信噪比(OSNR)监测技术，该技术利用商用的大带宽可调谐光带通滤波器进行采样，将得到的光功率测量值作为高斯过程回归(GPR)的输入特征值，能够准确地估计出大动态范围OSNR值，并且不受光链路的配置影响，具有分布式低成本的特点。针对32 Gbaud PDM-16QAM信号的实验结果表明，在-1 dB~30 dB的大OSNR范围内，光信噪比监测的均方根误差(RMSE)为0.429 dB，平均绝对误差(MAE)为0.294 dB。此外，本文提出的技术被证明对色散、偏振模色散、非线性效应和级联滤波效应(CFE)均不敏感。实验表明，本文提出的技术有潜力被用于在传输信息未知的情况下对中间节点实施链路监控，且由于不需要校准而更易于操作。
一种基于高斯过程回归的光信噪比监测技术
作者单位信息
通信作者： weilee@hust.edu.cn
出版日期：2021年1月15日
摘要
参考文献
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基金项目：
国家重点研发计划项目(2018YFB2200900)
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引用本文：
鄢然, 胡春杰, 李蔚. 一种基于高斯过程回归的光信噪比监测技术[J]. 光电工程, 2021, 48(1): 200077.
