2020/02/23 by Mengxi Tan, Xingyuan Xu, Jiayang Wu +3 · 1 citation
Physics and Astronomy · #physics.app-ph #physics.optics
paper · pdf · doi:10.1016/j.optcom.2020.125563
published as Optics Communications Volume 465, 15 June 2020, 125563 · 22 pages, 10 figures, 132 references, Invited Review. arXiv admin note: substantial text overlap with arXiv:1903.08541
arxiv created 2020/02/23 · arxiv updated 2020/03/10
Integrated Kerr microcombs are emerging as a powerful tool as sources of multiple wavelength channels for photonic RF and microwave signal processing mainly in the context of transversal filters. They offer a compact device footprint, very high versatility, large numbers of wavelengths, and wide Nyquist bands. Here, we review recent progress on Kerr microcomb-based photonic RF and microwave reconfigurable filters, based both on transversal filter methods and on RF to optical bandwidth scaling. We compare and contrast results achieved with wide comb spacing combs (200GHz) with more finely spaced (49GHz) microcombs. The strong potential of optical micro-combs for RF photonics applications in terms of functions and integrability is also discussed.