In this paper we present a spectral analyzer for wideband RF signals with a spectral hole-burning-based architecture operating at telecom wavelength. This device is based on a codoped Er 3 + :Sc 3 + :Y 2 SiO 5 crystal whose inhomogeneous linewidth allows for wideband operation. With time-resolved holeburning spectroscopy experiments we study the homogeneous linewidth and spectral diffusion in an unusual magnetic field configuration. We finally demonstrate the spectral analysis of RF signals with 28 GHz instantaneous bandwidth and MHz resolution. This work opens the way towards more complex architectures such as direction finding with wideband capacity.

中文翻译：

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电信波长光学处理器，用于射频信号的宽带频谱分析

在本文中，我们介绍了一种用于宽带RF信号的频谱分析仪，该频谱分析仪具有在电信波长下运行的基于频谱烧孔的架构。该器件基于共掺杂的Er 3 +：Sc 3 +：Y 2 SiO 5晶体，其线宽不均匀，可实现宽带工作。通过时间分辨的空穴燃烧光谱实验，我们研究了在异常磁场配置下的均匀线宽和光谱扩散。最后，我们演示了具有28 GHz瞬时带宽和MHz分辨率的RF信号的频谱分析。这项工作为更复杂的架构开辟了道路，例如具有宽带容量的测向。