High performance RF filters via bandwidth scaling with Kerr micro-combs

Xu, X, Tan, M, Wu, J, Nguyen, T, Chu, S, Little, B, Morandotti, R, Mitchell, A and Moss, D 2019, 'High performance RF filters via bandwidth scaling with Kerr micro-combs', APL Photonics, vol. 4, no. 2, pp. 1-8.


Document type: Journal Article
Collection: Journal Articles

Title High performance RF filters via bandwidth scaling with Kerr micro-combs
Author(s) Xu, X
Tan, M
Wu, J
Nguyen, T
Chu, S
Little, B
Morandotti, R
Mitchell, A
Moss, D
Year 2019
Journal name APL Photonics
Volume number 4
Issue number 2
Start page 1
End page 8
Total pages 8
Publisher AIP Publishing LLC
Abstract We demonstrate high-resolution photonic RF filters using an RF bandwidth scaling approach based on integrated Kerr optical micro-combs. By employing both an active nonlinear micro-ring resonator (MRR) as a high-quality micro-comb source and a passive high-Q MRR to slice the RF spectra modulated on the shaped comb, a large RF instantaneous bandwidth of 4.64 GHz and a high resolution of 117 MHz are achieved, together with a broad RF operation band covering 3.28-19.4 GHz (L to Ku bands) using thermal tuning. We achieve programmable RF transfer functions including binary-coded notch filters and RF equalizing filters with reconfigurable slopes. Our approach is an attractive solution for RF spectral shaping with high performance and flexibility.
Subject Photonics and Electro-Optical Engineering (excl. Communications)
DOI - identifier 10.1063/1.5080246
Copyright notice © Author(s) 2019
ISSN 2378-0967
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