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Simulation and experimental investigation of cross-phase modulation effect on 5G fronthaul wavelengths
Optical Engineering ( IF 1.3 ) Pub Date : 2021-04-01 , DOI: 10.1117/1.oe.60.4.046105
Yan Xu 1 , Peihua Yu 1 , Nan Ye 1 , Yingxiong Song 1
Affiliation  

Dense wavelength-division multiplexing is conceived as an appropriate solution for the 5G fronthaul system to cope with the rapidly increasing demand for bandwidth. While the cross-phase modulation (XPM) would appear when the signals are transmitted simultaneously in the single-mode fiber. The XPM effect on the 5G fronthaul wavelengths is investigated through both simulation and experimental campaigns. Simulation results show that the electrical spectrum crosstalk will occur with the wavelengths transmitting synchronously, when the channel spacing is 100 GHz and the speed is 25 Gbit / s per channel in the 10-km link. Also, the intensity of the electrical spectrum crosstalk becomes stronger when the launch power increases from 10 until 14 dBm. While comparing with the results obtained from the positive-intrinsic-negative (PIN) detector, the XPM-induced sensitivity penalty can be alleviated by 0.3 dB in use of avalanche photodiode (APD), which can provide higher signal-to-noise ratio. Consistent with the simulation results, the electrical spectrum crosstalk also appears in the experimental campaign under the same conditions. Furthermore, a sensitivity improvement of 0.5 dB is obtained using 25-GHz APD receiver, compared with the adoption of 35-GHz PIN receiver case.

中文翻译:

交叉相位调制对5G前传波长影响的仿真和实验研究

密集波分复用被认为是5G前传系统的合适解决方案,以应对快速增长的带宽需求。当在单模光纤中同时传输信号时,将出现交叉相位调制(XPM)。通过模拟和实验研究了XPM对5G前传波长的影响。仿真结果表明,在10 km链路中,当信道间隔为100 GHz且每个信道的速度为25 Gbit / s时,随着波长同步传输,将发生电频谱串扰。而且,当发射功率从10 dBm增大到14 dBm时,电频谱串扰的强度会变强。与从正本征(PIN)检测器获得的结果进行比较时,使用雪崩光电二极管(APD)可以将XPM引起的灵敏度损失降低0.3 dB,这可以提供更高的信噪比。与仿真结果一致,在相同条件下的实验过程中也会出现电频谱串扰。此外,与采用35 GHz PIN接收器的情况相比,使用25 GHz APD接收器可将灵敏度提高0.5 dB。
更新日期:2021-04-29
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