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| DWDM系统中利用分离色散与增益抑制FWM |
| FWM Suppression Using Separation Dispersion and Gain in DWDM Systems |
| 投稿时间：2024-01-20 修订日期：2024-03-24 |
| DOI： |
| 中文关键词: 光纤通信 四波混频 色散 增益 预啁啾 误码率 |
| 英文关键词:fibre optic communications four-wave mixing dispersion gain pre-chirp bit error rate |
| 基金项目:国家重点研发计划，国家自然科学基金项目，重庆市重点实验室“三峡库区地质环境监测与灾害预警”项目 |
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| 中文摘要: |
| 针对密集波分复用系统中四波混频效应会导致系统性能降低，提出一种抑制密集波分复用系统中四波混频效应的方法。该方法首先在不同数据速率的光网络中比较分析三种色散补偿方式，确定分离色散的色散补偿方式，在8信道和16信道的通信系统中分别对此种色散补偿方式和增益进行分离确定四波混频效应的影响，并在多次分离优化后利用预啁啾进一步抑制四波混频效应，对信道误码率进行数值计算，分析系统性能。结果表明，在8信道和16信道系统中，随着色散与增益分离次数的增加，光纤中的四波混频效应得到了有效的抑制，且在预啁啾情况下四波混频效应降至更低，信道中的最小误码率分别为5.08×10-19和8.77×10-17，可为下一代高容量光纤通信系统的发展提供重要的参考和指导。 |
| 英文摘要: |
| Aiming at the four-wave mixing effect in the dense wavelength division multiplexing system, which will lead to the system performance degradation, a method to suppress the four-wave mixing effect in the dense wavelength division multiplexing system is proposed. The method firstly compares and analyzes three dispersion compensation methods in optical networks with different data rates, determines the dispersion compensation method of separation dispersion, separates the dispersion compensation method and gain to determine the influence of four-wave frequency mixing effect in 8-channel and 16-channel communication systems, and further suppresses the four-wave frequency mixing effect by using the pre-chirp after multiple separation optimization, and numerically calculates the channel bit error rate to analyze the system performance. Numerical calculation of channel BER is performed to analyse the system performance. The results show that in the 8-channel and 16-channel systems, the four-wave mixing effect in the optical fibre is effectively suppressed with the increase of the number of dispersion and gain separations, and the four-wave mixing effect is reduced to a lower level in the case of pre-chirping, and the minimum BER in the channel is 5.08 × 10-19 and 8.77 × 10-17, respectively, which can provide important reference and guidance. |
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