Photonic Microwave and mm-Wave Mixer for Multichannel Fiber Transmission
Photonic Microwave and mm-Wave Mixer for Multichannel Fiber Transmission
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用于多通道光纤传输的光子微波和毫米波混频器
DOI：
10.1109/jlt.2017.2652122
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发表时间：
2017-05
影响因子：
4.7
通讯作者：
Zhang Huixing
中科院分区：
文献类型：
--
作者：
Gao Yongsheng;Wen Aijun;Zhang Wu;Wang Yong;Zhang Huixing
光子微波和毫米波频率转换由于其大带宽、电磁抗扰性以及与其他光学系统的兼容性，对于未来电子系统来说是一种有前途的技术。然而，光子混频器的转换增益通常较低，并且可能因光纤色散而进一步降低。本文提出了一种采用集成偏振分复用马赫-曾德调制器（PDM-MZM）的光子微波和毫米波混频器，该混频器具有高转换增益、高纯度和多通道光纤传输中功率衰落补偿的优点。通过抑制光载波和优化调制指数，实验中转换增益和隔离度分别提高了27.6和55.3 dB。经过功率补偿后，经过25公里的光纤传输后，可以获得12至45 GHz的高且相对平坦的微波和毫米波信号。此外，承载 100 MSym/s 16 正交幅度调制 (16QAM) 矢量信号的上变频 38 GHz 毫米波信号通过具有不同光纤长度（背对背、4、25 和 50 km）的四个通道同时传输。每个通道的功率衰落可以独立补偿，获得良好的电频谱、星座图和接收机灵敏度。
Photonic microwave and millimeter wave (mm-wave) frequency conversion is a promising technique for future electronic systems due to its large bandwidth, electromagnetic immunity, and compatibility with other optical systems. However, the conversion gain of a photonic mixer is often low and may be further reduced by the fiber dispersion. In this paper, a photonic microwave and mm-wave mixer using an integrated polarization division multiplexing Mach–Zehnder modulator (PDM-MZM) is proposed, which exhibits the merits of high conversion gain, high purity, and compensation of the power fading in multichannel fiber transmission. By suppressing the optical carrier and optimizing the modulation index, the conversion gain and isolation are respectively improved by 27.6 and 55.3 dB in the experiment. After power compensation, high and relatively flat microwave and mm-wave signals from 12 to 45 GHz are obtained after transmission over 25-km fiber. In addition, an up-converted 38-GHz mm-wave signal carrying 100-MSym/s 16-quadrature amplitude modulation (16QAM) vector signal is simultaneously transmitted over four channels with different fiber length (back to back, 4, 25, and 50 km). The power fading in each channel can be independently compensated, and good electrical spectra, constellation diagrams, and receiver sensitivity are obtained.
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影响因子：
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作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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DOI：
10.1109/icc.2012.6363891
发表时间：
2012-06
期刊：
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影响因子：
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