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DOI码：10.1364/OE.20.017214

发表刊物：OPTICS EXPRESS

摘要：Intermodulation distortions are generated by Mach-Zehnder modulators when they are driven by signals with certain bandwidth in microwave (MW) and millimeter-wave (MMW) radio-over-fiber (ROF) links. The optical spectral structure of the distorted optical signal is investigated. A strategy to improve the dynamic range of MW and MMW ROF links directly in the optical domain is proposed and experimentally demonstrated. Based on optical spectrum processing, the third-order intermodulation distortions (IMD3s) of the generated signals are suppressed. A 107.2dB center dot Hz(2/3) spurious-free dynamic range (SFDR) of the MW/MMW ROF link is obtained, which is improved more than 20dB. A 16QAM signal is transmitted in the system and the error vector magnitude (EVM) is measured with and without the proposed technique. The influence of the nonlinearity of modulators on EVM is almost completely eliminated. (C) 2012 Optical Society of America

第一作者：Zhang, Guoqiang, Li, Shangyuan, Zheng, Xiaoping, Zhang, Hanyi, Zhou, Bingkun, Xiang, Peng

论文类型：J

文献类型：Article

卷号：20

期号：15

页面范围：17214

ISSN号：1094-4087

是否译文：否