光通信技术2025，Vol.49Issue(5)：51-56,6.DOI:10.13921/j.cnki.issn1002-5561.2025.05.009
灵活速率的高性能改进双波相位共轭技术研究
Research on high-performance improved phase-conjugated twin-wave technology with flexible rate
摘要
Abstract
Aiming at the issue of low spectral efficiency in traditional phase-conjugate twin-wave(PCTW)based nonlinear compensation methods,although the modified PCTW(M-PCTW)approach can improve spectral efficiency to some extent,it also introduces performance degradation due to error propagation.A flexible-rate high-performance M-PCTW(FH-M-PCTW)method is proposed,which enhances spectral efficiency while overcoming error propagation and improving flexibility in spec-tral efficiency adjustment by superimposing an error-correction-coded and rate-variable phase signal onto the phase-conjugated signal.The method is validated in both 64 GBaud and 100 GBaud optical fiber transmission systems.Simulation results demon-strate that the FH-M-PCTW method not only ensures nonlinear compensation performance but also improves spectral effi-ciency by 50%and 35%under 8-ary quadrature amplitude modulation(8QAM)and 16QAM formats,respectively,compared to the conventional PCTW method.Furthermore,the proposed method supports flexible rate adaptation and exhibits signifi-cantly better performance than the M-PCTW method.关键词
非线性补偿/双波相位共轭/正交振幅调制/前向纠错编码/频谱效率Key words
nonlinear compensation/phase-conjugated twin-wave/quadrature amplitude modulation/forward error correction/spectral efficiency分类
信息技术与安全科学引用本文复制引用
郭婉桢,张子恒,赵建..灵活速率的高性能改进双波相位共轭技术研究[J].光通信技术,2025,49(5):51-56,6.基金项目
国家重点研发计划项目(2022YFB2903002)资助 （2022YFB2903002）
广东省"珠江人才计划"青年拔尖人才项目(2019QN01X165)资助 （2019QN01X165）
广东省自然科学基金项目(2024A1515010384)资助. （2024A1515010384）
