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首页> 外文期刊>Optics Letters >Simultaneously photonic frequency downconversion, multichannel phase shifting, and IQ demodulation for wideband microwave signals
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Simultaneously photonic frequency downconversion, multichannel phase shifting, and IQ demodulation for wideband microwave signals

机译：同时进行宽带微波信号的光子频率下变频，多通道相移和IQ解调

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摘要

A single photonic system that can simultaneously perform frequency downconversion, multichannel phase shifting, and in-phase (I) and quadrature (Q) demodulation for microwave signals is proposed and experimentally demonstrated. Using an integrated polarization-division multiplexing Mach-Zehnder modulator, radio frequency (RF) signals can be frequency downconverted to multichannel intermediate frequency (IF) signals and the phase of each IF signal can be independently and arbitrarily tuned. Using two quadrature channels, the RF signal can be IQ demodulated. In the experiment, high and flat conversion gains from 8 to 40 GHz and continuously tunable phase shifts over the 360-deg range are demonstrated. In addition, vector signals with various modulation formats at 40 GHz are frequency downconverted to baseband and the IQ data are successfully extracted. (C) 2016 Optical Society of America
机译：提出并实验证明了可以同时执行频率下变频，多通道相移以及微波信号的同相（I）和正交（Q）解调的单光子系统。使用集成的偏振分复用Mach-Zehnder调制器，可以将射频（RF）信号下变频为多通道中频（IF）信号，并且可以独立且任意地调谐每个IF信号的相位。使用两个正交通道，可以对RF信号进行IQ解调。在实验中，展示了从8到40 GHz的高平坦转换增益以及在360度范围内的连续可调相移。此外，具有40 GHz各种调制格式的矢量信号被下变频到基带，并且IQ数据被成功提取。 （C）2016美国眼镜学会

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