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首页> 外文期刊>Applied optics >Microwave photonic mixer based on a single bidirectional Mach-Zehnder modulator
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Microwave photonic mixer based on a single bidirectional Mach-Zehnder modulator

机译：基于单个双向马赫曾德尔调制器的微波光子混合器

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摘要

A microwave photonic mixer based on a single electro-optic Mach-Zehnder intensity modulator operating in both directions is presented. In this mixer structure, the light from the optical source travels in opposite directions inside the modulator and is modulated by both the RF signal and the local oscillator (LO). The output optical spectrum comprises the RF signal and LO sidebands without the optical carrier. This enables a high conversion efficiency mixing operation to be obtained. The mixer has a simple structure, and its performance is insensitive to the modulator bias voltage; hence no DC bias voltage and no modulator bias controller are required to obtain robust high conversion efficiency mixing operation. Experimental results are presented showing large conversion efficiency improvement of 25.7 dB compared to the conventional dual Mach-Zehnder modulator-based microwave photonic mixer and a modulator bias insensitive mixing performance.
机译：提出了一种基于在两个方向上运行的单个电光马赫曾德尔强度调制器的微波光子混合器。在这种混合器结构中，来自光源的光以相反的方向在调制器内部传播，并被RF信号和本地振荡器（LO）调制。输出光谱包括RF信号和没有光学载波的LO边带。这使得能够获得高转化效率的混合操作。混频器结构简单，其性能对调制器偏置电压不敏感。因此，不需要直流偏置电压和调制器偏置控制器即可获得鲁棒的高转换效率混合操作。实验结果表明，与传统的基于双Mach-Zehnder调制器的微波光子混合器相比，转换效率提高了25.7 dB，并且调制器偏置不灵敏的混合性能。

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