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Demonstration of a microwave spectrum analyzer based on time-domain optical processing in fiber

机译:基于光纤时域光学处理的微波频谱分析仪的演示

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摘要

We demonstrate a novel method for spectral analysis of microwave signals that employs time-domain processing in fiber. We use anomalous dispersion in single-mode fiber to perform a Fresnel transform followed by a matched amount of dispersion-compensating fiber to perform an inverse Fresnel transform of an ultrashort pulse. After the Fresnel-transformed waveform is modulated by the microwave signal, the waveform at the output of the dispersion-compensating fiber represents the ultrashort pulse convolved with the microwave spectrum. An experimental system for spectral analysis of microwave signals in the range 6-21 GHz is demonstrated.
机译:我们演示了一种新型的微波信号频谱分析方法,该方法在光纤中采用时域处理。我们在单模光纤中使用反常色散来执行菲涅耳变换,然后使用匹配量的色散补偿光纤来执行超短脉冲的菲涅耳逆变换。通过微波信号对菲涅尔变换后的波形进行调制后,色散补偿光纤输出端的波形代表了与微波频谱卷积的超短脉冲。演示了用于对6-21 GHz范围内的微波信号进行频谱分析的实验系统。

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