Advanced RF and microwave functions based on an integrated optical frequency comb source

Xingyuan Xu, Jiayang Wu, Thach G. Nguyen, Mehrdad Shoeiby, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss

Research output: Contribution to journalArticleResearchpeer-review

96 Citations (Scopus)


We demonstrate advanced transversal radio frequency (RF) and microwave functions based on a Kerr optical comb source generated by an integrated micro-ring resonator. We achieve extremely high performance for an optical true time delay aimed at tunable phased array antenna applications, as well as reconfigurable microwave photonic filters. Our results agree well with theory. We show that our true time delay would yield a phased array antenna with features that include high angular resolution and a wide range of beam steering angles, while the microwave photonic filters feature high Q factors, wideband tunability, and highly reconfigurable filtering shapes. These results show that our approach is a competitive solution to implementing reconfigurable, high performance and potentially low cost RF and microwave signal processing functions for applications including radar and communication systems.

Original languageEnglish
Pages (from-to)2569-2583
Number of pages15
JournalOptics Express
Issue number3
Publication statusPublished - 5 Feb 2018
Externally publishedYes

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