Joint nonlinear electrical equalization in coherent optical PDM DFT-spread-OFDM systems

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 6-9
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.060601

摘要

We propose a joint nonlinear electrical equalization approach in coherent optical discrete-Fourier-transform spread orthogonal-frequency-division-multiplexing (DFT-spread-OFDM) systems with polarization division multiplexing (PDM).This method is based on an adaptive Volterra series expansion for nonlinear distortions of two orthogonal polarizations.The nonlinear electrical equalization is validated through numerical simulation of 100-Gb/s quadrature phase shift keying and 200-Gb/s 16 quadrature amplitude modulation PDM DFT-spread-OFDM systems.