Lan Tianxiang, Yang Chuanchuan, Fang Xiansong, Zhang Fan, Yu Wenjing, Zhou Weiqin, Chen Zhangyuan
Opt Lett. 2024 Feb 1;49(3):694-697. doi: 10.1364/OL.513589.
Inter-channel nonlinearity compensation plays a crucial role in wavelength division multiplexing (WDM) systems for improving transmission capacity and distance. In this work, we propose a novel, to the best of our knowledge, inter-channel nonlinearity compensation method called generalized Rayleigh quotient optimization (GRQO) method with two different working modes. In an 8 × 64 GBaud 16-ary quadrature amplitude modulation (16-QAM) experimental system over 1600 km standard single-mode fiber (SSMF), the proposed method shows a 0.40 dB Q factor improvement over nonlinear polarization cross talk canceller (NPCC) with a moderately low computational complexity of about 2000 real multiplications per bit (RMb).
通道间非线性补偿在波分复用（WDM）系统中对于提高传输容量和距离起着至关重要的作用。在这项工作中，据我们所知，我们提出了一种新颖的通道间非线性补偿方法，称为具有两种不同工作模式的广义瑞利商优化（GRQO）方法。在一个1600公里标准单模光纤（SSMF）上的8×64 GBaud 16进制正交幅度调制（16-QAM）实验系统中，该方法相较于非线性偏振串扰消除器（NPCC），在适度较低的计算复杂度（约每比特2000次实数乘法（RMb））下，Q因子提高了0.40 dB。
