Journal
PHOTONICS RESEARCH
Volume 6, Issue 5, Pages B30-B36Publisher
OPTICAL SOC AMER
DOI: 10.1364/PRJ.6.000B30
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Funding
- Australian Research Council (ARC) [DP150104327]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- MESI PSR-SIIRI Initiative in Quebec
- Canada Research Chairs Program
- Government of the Russian Federation [074-U 01]
- 1000 Talents Sichuan Program in China
- Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDB24030000]
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We demonstrate significantly improved performance of a microwave true time delay line based on an integrated optical frequency comb source. The broadband micro-comb (over 100 nm wide) features a record low free spectral range (FSR) of 49 GHz, resulting in an unprecedented record high channel number (81 over the C band)-the highest number of channels for an integrated comb source used for microwave signal processing. We theoretically analyze the performance of a phased array antenna and show that this large channel count results in a high angular resolution and wide beam-steering tunable range. This demonstrates the feasibility of our approach as a competitive solution toward implementing integrated photonic true time delays in radar and communications systems. (C) 2018 Chinese Laser Press.
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