Broadband photonic RF channelizer based on micro-combs

Xingyuan Xu; Jiayang Wu; Mengxi Tan; Thach G. Nguyen; Sai T. Chu; Brent E. Little; Roberto Morandotti; Arnan Mitchell; David J. Moss

doi:10.1117/12.2506942

1 March 2019 Broadband photonic RF channelizer based on micro-combs

Xingyuan Xu, Jiayang Wu, Mengxi Tan, Thach G. Nguyen, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss

Author Affiliations +

Proceedings Volume 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII; 1091722 (2019) https://doi.org/10.1117/12.2506942
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

In this paper, we first employ CMOS-compatible integrated optical combs to demonstrate a broadband RF channelizer. By using an on-chip nonlinear micro-ring resonator, a broadband 200GHz-spacing Kerr comb with a large number of comb lines are generated, providing a record large number of wavelength channels (over 60 in the C- and L- band) as well as over 100GHz potential RF operation bandwidth for RF channelizers with greatly reduced size, potential cost, and complexity. Record-high spectral slice resolution of 124.94 MHz is achieved through an on-chip MRR featuring a high Q factor up to 1.549×10⁶. As a result, broadband channelization of RF frequencies ranging from 1.7 GHz to 19 GHz is experimentally demonstrated, verifying our approach’s feasibility and effectiveness towards the realization of broadband RF channelizer with large channel number and high resolution, as well as reduced cost and footprint.

Citation Download Citation

Xingyuan Xu, Jiayang Wu, Mengxi Tan, Thach G. Nguyen, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, and David J. Moss "Broadband photonic RF channelizer based on micro-combs ", Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 1091722 (1 March 2019); https://doi.org/10.1117/12.2506942

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