Rosa Paweł, Martella Giuseppe Rizzelli, Tan Mingming
National Institute of Telecommunications, Szachowa 1, 04-894 Warsaw, Poland.
LINKS Foundation, Via Piercarlo Boggio 61, 10138 Torino, Italy.
Sensors (Basel). 2022 Aug 24;22(17):6385. doi: 10.3390/s22176385.
In this paper, we investigate various designs of distributed Raman amplifier (DRA) to extend amplification bandwidth in mid-link optical phase conjugation (OPC) systems and compare bands 191-197 THz and 192-198 THz giving a total bandwidth of 6 THz using a single wavelength pump. We demonstrate the use of highly reflective fiber Bragg grating (FBG) to minimize gain variation across a WDM grid by optimizing forward and backward pump powers as well as the wavelength of FBGs for original and conjugated channels. Finally, we also simulate OSNR and Kerr nonlinear reduction as a product of signals asymmetry and nonlinear phase shift (NPS) for all channels.
在本文中，我们研究了分布式拉曼放大器（DRA）的各种设计，以扩展链路中光相位共轭（OPC）系统的放大带宽，并比较了191 - 197太赫兹频段和192 - 198太赫兹频段，使用单波长泵浦可实现6太赫兹的总带宽。我们展示了使用高反射光纤布拉格光栅（FBG），通过优化正向和反向泵浦功率以及原始通道和共轭通道的FBG波长，来最小化波分复用（WDM）网格上的增益变化。最后，我们还针对所有通道模拟了作为信号不对称和非线性相位偏移（NPS）乘积的光信噪比（OSNR）和克尔非线性降低情况。
