Electronically synthesized Nyquist pulses for photonic sampling of microwave signals
Electronically synthesized Nyquist pulses for photonic sampling of microwave signals
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DOI：
10.1364/oe.25.029249
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发表时间：
2017-11-13
期刊：
影响因子：
3.8
通讯作者：
Liu, Chin-Pang
中科院分区：
文献类型：
--
作者：
Vercesi, Valeria;Onori, Daniel;Liu, Chin-Pang
我们报告电子产生的光学奈奎斯特脉冲使用任意波形发生器（AWG），其次是马赫曾德尔调制器（MZM），提供了一个简单的，高度稳定和灵活的技术来执行光子采样。在这里，我们展示了10 GHz的周期性光奈奎斯特脉冲的产生，通过合成所有的正和交替的正负电脉冲序列使用25 GHz带宽的AWG。将MZM偏置在零点确保满足光域中的奈奎斯特无ISI标准，并允许脉冲压缩。此外，我们报告的第一个光子采样和解调的1 Gbaud 16-和32-QAM信号高达22.5 GHz，使用10 GHz的光奈奎斯特采样脉冲序列。由The Optical Society根据知识共享署名4.0许可证条款发布。
We report electronic generation of optical Nyquist pulses using an arbitrary waveform generator (AWG) followed by a Mach Zehnder modulator (MZM), providing a simple, highly stable and flexible technique to perform photonic sampling. Here, we demonstrate the generation of 10 GHz periodic optical Nyquist pulses by synthesizing both all-positive and alternate positive-negative electrical pulse trains using a 25 GHz bandwidth AWG. Biasing the MZM at null ensures the meeting of the Nyquist ISI-free criterion in the optical domain and allows for pulse compression. Moreover, we report the first photonic sampling and demodulation of 1 Gbaud 16- and 32-QAM signals up to 22.5 GHz using 10 GHz optical Nyquist sampling pulse trains. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.