Photonics-Based Real-Time Spectral Analysis Over 40-GHz Bandwidth with Fine Frequency Resolution

Xinyi Zhu,Benjamin Crockett,Connor M. L. Rowe,Josè Azaña

2023 IEEE Research and Applications of Photonics in Defense Conference (RAPID)（2023）

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摘要

We demonstrate a novel scheme based on electro-optic phase modulation following the Talbot effect that enables real-time spectrogram analysis of arbitrary signals over 40-GHz bandwidth, with MHz frequency resolution, and analysis rates up to 220 million Fourier transforms per second.

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关键词

Spectrogram,microwave photonics,short-time Fourier transform

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