Precompensated Optical Double-Sideband Subcarrier Modulation Immune to Fiber Chromatic-Dispersion-Induced Radio Frequency Power Fading
Precompensated Optical Double-Sideband Subcarrier Modulation Immune to Fiber Chromatic-Dispersion-Induced Radio Frequency Power Fading
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DOI：
10.1364/jocn.1.000331
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发表时间：
2009-09
期刊：
影响因子：
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通讯作者：
B. Hraimel;Xiupu Zhang;Mohmoud Mohamed;K. Wu
中科院分区：
文献类型：
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作者：
B. Hraimel;Xiupu Zhang;Mohmoud Mohamed;K. Wu
我们提出并演示了一种新的光学双向带调制技术，该技术不受光纤色散的影响，因此不受色散引起的射频功率衰落的影响。与光单边带调制相比，所提出的调制技术还提供了3db的射频功率改进。对所提出的调制技术进行了理论和仿真分析。结果表明，在给定的光纤长度下，存在一个最佳电相移来完全抵消色散引起的射频功率衰落。我们对单音射频信号和多波段正交频分复用超宽带信号的调制技术进行了实验验证。
We propose and demonstrate a new optical double-sideband modulation technique that is immune to fiber chromatic dispersion and thus free of dispersion-induced RF power fading. The proposed modulation technique also provides a 3 dB improvement of RF power compared with optical single-sideband modulation. The proposed modulation technique is analyzed in theory and simulation. It is shown that for a given fiber length an optimum electrical phase shift exists to completely cancel the dispersion-induced RF power fading. We verify this proposed modulation technique experimentally for a single-tone RF signal and for a multiband orthogonal frequency division multiplexing ultrawideband signal.