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文章在分析无线正交频分复用(OFDM)技术和单模光纤偏振特性的基础上,研究了一种基于多输入多输出(MIMO)框架的光OFDM系统并搭建了实验平台。系统将两路12Gb/sOFDM信号通过偏振复用为24Gb/s信号,实现了两路信号的解调输出。实验证明,该系统可扩展光纤信道中的频谱划分,增大信道容量,具有较强的对抗光纤色散的能力。
Based on the analysis of polarization characteristics of the wireless orthogonal frequency division multiplexing (OFDM) and single-mode optical fiber, an optical OFDM system based on multiple input multiple output (MIMO) is studied and an experimental platform is set up. The system will be two-way 12Gb / sOFDM signal polarization multiplexed to 24Gb / s signal, to achieve a two-channel signal demodulation output. Experiments show that the system can expand the spectral division in the fiber channel, increase the channel capacity, and has a strong ability of combating fiber dispersion.