Zhang Fan, Yang Chuanchuan, Fang Xi, Zhang Tingting, Chen Zhangyuan
The state key laboratory of advanced optical communication systems & networks, Peking University, Beijing 100871, China.
Opt Express. 2013 Mar 11;21(5):6115-30. doi: 10.1364/OE.21.006115.
Orthogonal transmission with frequency division multiplexing technique is investigated for next generation optical communication systems. Coherent optical orthogonal frequency division multiplexing (OFDM) and single-carrier frequency division multiplexing (SCFDM) schemes are compared in combination with polarization-division multiplexing quadrature phase shift keying (QPSK) or 16-QAM (quadrature amplitude modulation) formats. Multi-granularity transmission with flexible bandwidth can be realized through ultra-dense wavelength division multiplexing (UDWDM) based on the orthogonal technique. The system performance is numerically studied with special emphasis on transmission degradations due to fiber Kerr nonlinearity. The maximum reach and fiber capacity for different spectral efficiencies are investigated for systems with nonlinear propagation over uncompensated standard single-mode fiber (SSMF) links with lumped amplification.
针对下一代光通信系统研究了采用频分复用技术的正交传输。将相干光正交频分复用（OFDM）和单载波频分复用（SCFDM）方案与偏振分复用正交相移键控（QPSK）或16-QAM（正交幅度调制）格式相结合进行比较。基于正交技术的超密集波分复用（UDWDM）可实现具有灵活带宽的多粒度传输。对系统性能进行了数值研究，特别关注了光纤克尔非线性导致的传输劣化。对于具有集总放大的未补偿标准单模光纤（SSMF）链路的非线性传播系统，研究了不同频谱效率下的最大传输距离和光纤容量。
