High performance RF filters via bandwidth scaling with Kerr micro-combs
High performance RF filters via bandwidth scaling with Kerr micro-combs
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DOI：
10.1063/1.5080246
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发表时间：
2019-02
期刊：
影响因子：
5.6
通讯作者：
Xingyuan Xu;M. Tan;Jiayang Wu;T. Nguyen;S. Chu;B. Little;R. Morandotti;A. Mitchell;D. Moss
中科院分区：
文献类型：
--
作者：
Xingyuan Xu;M. Tan;Jiayang Wu;T. Nguyen;S. Chu;B. Little;R. Morandotti;A. Mitchell;D. Moss
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.
