TY - JOUR
T1 - Broadband Photonic RF Channelizer With 92 Channels Based on a Soliton Crystal Microcomb
AU - Xu, Xingyuan
AU - Tan, Mengxi
AU - Wu, Jiayang
AU - Boes, Andreas
AU - Nguyen, Thach G.
AU - Chu, Sai T.
AU - Little, Brent E.
AU - Morandotti, Roberto
AU - Mitchell, Arnan
AU - Moss, David J.
PY - 2020/9/15
Y1 - 2020/9/15
N2 - We report a broadband radio frequency (RF) channelizer with up to 92 channels using a coherent microcomb source. A soliton crystal microcomb, generated by a 49 GHz micro-ring resonator (MRR), is used as a multi-wavelength source. Due to its ultra-low comb spacing, up to 92 wavelengths are available in the C band, yielding a broad operation bandwidth. Another high-Q MRR is employed as a passive optical periodic filter to slice the RF spectrum with a high resolution of 121.4 MHz. We experimentally achieve an instantaneous RF operation bandwidth of 8.08 GHz and verify RF channelization up to 17.55 GHz via thermal tuning. Our approach is a significant step towards the monolithically integrated photonic RF receivers with reduced complexity, size, and unprecedented performance, which is important for wide RF applications ranging from broadband analog signal processing to digital-compatible signal detection.
AB - We report a broadband radio frequency (RF) channelizer with up to 92 channels using a coherent microcomb source. A soliton crystal microcomb, generated by a 49 GHz micro-ring resonator (MRR), is used as a multi-wavelength source. Due to its ultra-low comb spacing, up to 92 wavelengths are available in the C band, yielding a broad operation bandwidth. Another high-Q MRR is employed as a passive optical periodic filter to slice the RF spectrum with a high resolution of 121.4 MHz. We experimentally achieve an instantaneous RF operation bandwidth of 8.08 GHz and verify RF channelization up to 17.55 GHz via thermal tuning. Our approach is a significant step towards the monolithically integrated photonic RF receivers with reduced complexity, size, and unprecedented performance, which is important for wide RF applications ranging from broadband analog signal processing to digital-compatible signal detection.
KW - Integrated optical frequency comb
KW - Microwave photonic
KW - signal channelization
KW - Integrated optical frequency comb
KW - Microwave photonic
KW - signal channelization
KW - Integrated optical frequency comb
KW - Microwave photonic
KW - signal channelization
UR - http://www.scopus.com/inward/record.url?scp=85090865115&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85090865115&origin=recordpage
U2 - 10.1109/JLT.2020.2997699
DO - 10.1109/JLT.2020.2997699
M3 - RGC 21 - Publication in refereed journal
SN - 0733-8724
VL - 38
SP - 5116
EP - 5121
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 18
M1 - 9099964
ER -