Version 1
: Received: 5 April 2021 / Approved: 6 April 2021 / Online: 6 April 2021 (10:06:50 CEST)
How to cite:
Tan, M.; Xu, X.; Moss, D. Tunable Broadband RF Photonic Fractional Hilbert Transformer Based on a Soliton Crystal Microcomb. Preprints2021, 2021040162. https://doi.org/10.20944/preprints202104.0162.v1
Tan, M.; Xu, X.; Moss, D. Tunable Broadband RF Photonic Fractional Hilbert Transformer Based on a Soliton Crystal Microcomb. Preprints 2021, 2021040162. https://doi.org/10.20944/preprints202104.0162.v1
Tan, M.; Xu, X.; Moss, D. Tunable Broadband RF Photonic Fractional Hilbert Transformer Based on a Soliton Crystal Microcomb. Preprints2021, 2021040162. https://doi.org/10.20944/preprints202104.0162.v1
APA Style
Tan, M., Xu, X., & Moss, D. (2021). Tunable Broadband RF Photonic Fractional Hilbert Transformer Based on a Soliton Crystal Microcomb. Preprints. https://doi.org/10.20944/preprints202104.0162.v1
Chicago/Turabian Style
Tan, M., Xingyuan Xu and David Moss. 2021 "Tunable Broadband RF Photonic Fractional Hilbert Transformer Based on a Soliton Crystal Microcomb" Preprints. https://doi.org/10.20944/preprints202104.0162.v1
Abstract
We demonstrate an RF photonic fractional Hilbert transformer based on an integrated Kerr micro-comb source featuring a record low free spectral range of 49 GHz. By programming and shaping the comb lines according to calculated tap weights for up to 39 wavelengths across the C-band, we achieve tunable bandwidths ranging from 1.2 to 15.3 GHz as well as variable center frequencies from baseband to 9.5 GHz, for both standard integral and arbitrary fractional orders. We experimentally characterize the RF amplitude and phase response of the tunable bandpass and lowpass Hilbert transformers with 90 and 45-degree phase shifts. The experimental results show good agreement with theory, confirming the effectiveness of our approach as a powerful way to implement standard and fractional order Hilbert transformers with broad and variable bandwidths and center frequencies, with high reconfigurability and greatly reduced size and complexity. Tan, and D. J. Moss are with the Optical Sciences Centre, Swinburne University of Technology, Hawthorn, VIC 3122, Australia. (Corresponding e-mail: dmoss@swin.edu.au). Xu is with the Electro-Photonics Laboratory, Department of Electrical and Computer System Engineering, Monash University, Clayton, 3800 VIC, Australia
Keywords
microcombs; filters; high bandwidth; RF photonics
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.