2019/10/01 by Mengxi Tan, Xingyuan Xu, Jiayang Wu +6
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Advanced Photonic Communication Systems #Bandwidth (computing) #Differentiator #Fractional bandwidth #Hilbert spectral analysis #Hilbert transform #Microwave #Photonic and Optical Devices #SIGNAL (programming language) #Signal processing #physics.app-ph #physics.optics
paper · pdf · doi:10.1109/mwp.2019.8892024
published as IEEE Topical Meeting on Microwave Photonics, Ottawa, October 2019 · 4 pages 5 figures, 32 references. arXiv admin note: text overlap with arXiv:1903.08541, arXiv:1904.00998
openalex publication_date 2019/10/01 · openalex created_date 2019/11/22 · arxiv created 2020/08/23 · arxiv updated 2020/08/26 · openalex updated_date 2026/08/05
We propose and demonstrate reconfigurable fractional microwave signal processing based on an integrated Kerr optical microcomb. We achieve two forms of microwave signal processing functions-a fractional Hilbert transform as well as a fractional differentiator. For the Hilbert transform we demonstrate a phase shift of 45 degrees - half that of a full Hilbert transform, while for the differentiator we achieve square-root differentiation. For both, we achieve high resolution over a broad bandwidth of 17 GHz with a phase deviation of less than 5° within the achieved passband. This performance in both the frequency and time domains demonstrates the versatility and power of micro-combs as a basis for high performance microwave signal processing.