Photonic microwave true time delays for phased array antennas using a 49 GhZ FSR integrated optical micro-comb source [invited]

Xu, X, Wu, J, Nguyen, T, Moein, T, Chu, S, Little, B, Morandotti, R, Mitchell, A and Moss, D 2018, 'Photonic microwave true time delays for phased array antennas using a 49 GhZ FSR integrated optical micro-comb source [invited]', Photonics Research, vol. 6, no. 5, pp. 30-36.


Document type: Journal Article
Collection: Journal Articles

Title Photonic microwave true time delays for phased array antennas using a 49 GhZ FSR integrated optical micro-comb source [invited]
Author(s) Xu, X
Wu, J
Nguyen, T
Moein, T
Chu, S
Little, B
Morandotti, R
Mitchell, A
Moss, D
Year 2018
Journal name Photonics Research
Volume number 6
Issue number 5
Start page 30
End page 36
Total pages 7
Publisher Optical Society of America
Abstract 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.
Subject Classical Physics not elsewhere classified
Optical Physics not elsewhere classified
Keyword(s) Radiofrequency Spectrum Analyzer
Stimulated Brillouin-Scattering
Kerr-Frequency Combs
Wave-Guide
Silicon-Nitride
Slow Light
Generation
RF
Filter
Modulators
DOI - identifier 10.1364/PRJ.6.000B30
Copyright notice © 2018 Chinese Laser Press
ISSN 2327-9125
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