1.Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA
2.Department of Physics, University of Virginia, Charlottesville, VA 22904, USA
3.Freedom Photonics LLC, Santa Barbara, CA, USA
Andreas Beling (andreas@virginia.edu)
Xu Yi (yi@virginia.edu)
纸质出版日期:2021,
网络出版日期:2021-01-01,
收稿日期:2020-08-30,
修回日期:2020-11-24,
录用日期:2020-11-26
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Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons[J]. LSA, 2021,10(1):50-59.
Wang, B. C. et al. Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons. Light: Science & Applications, 10, 50-59 (2021).
Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons[J]. LSA, 2021,10(1):50-59. DOI: 10.1038/s41377-020-00445-x.
Wang, B. C. et al. Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons. Light: Science & Applications, 10, 50-59 (2021). DOI: 10.1038/s41377-020-00445-x.
Millimetre-wave (mmWave) technology continues to draw great interest due to its broad applications in wireless communications
radar
and spectroscopy. Compared to pure electronic solutions
photonic-based mmWave generation provides wide bandwidth
low power dissipation
and remoting through low-loss fibres. However
at high frequencies
two major challenges exist for the photonic system: the power roll-off of the photodiode
and the large signal linewidth derived directly from the lasers. Here
we demonstrate a new photonic mmWave platform combining integrated microresonator solitons and high-speed photodiodes to address the challenges in both power and coherence. The solitons
being inherently mode-locked
are measured to provide 5.8 dB additional gain through constructive interference among mmWave beatnotes
and the absolute mmWave power approaches the theoretical limit of conventional heterodyne detection at 100 GHz. In our free-running system
the soliton is capable of reducing the mmWave linewidth by two orders of magnitude from that of the pump laser. Our work leverages microresonator solitons and high-speed modified uni-traveling carrier photodiodes to provide a viable path to chip-scale
high-power
low-noise
high-frequency sources for mmWave applications.
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