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Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation

Author

Listed:
  • Jian Tang

    (University of Ottawa
    Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Beibei Zhu

    (University of Ottawa
    Nanjing University of Aeronautics and Astronautics)

  • Weifeng Zhang

    (University of Ottawa)

  • Ming Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Shilong Pan

    (Nanjing University of Aeronautics and Astronautics)

  • Jianping Yao

    (University of Ottawa)

Abstract

We show the generation of a tunable linearly chirped microwave waveform (LCMW) with an ultra-large time-bandwidth product (TBWP) based on a hybrid Fourier-domain mode-locked (FDML) laser. The key device in the hybrid FDML laser is a silicon photonic integrated micro-disk resonator (MDR) which functions as an optical bandpass filter, to have strong wavelength selectivity and fast frequency tunability. By incorporating the integrated MDR in the fiber-based ring cavity to perform frequency-domain mode locking, an FDML laser is realized and a broadband frequency-chirped optical pulse is generated. By beating the frequency-chirped optical pulse with an optical carrier from a laser diode (LD) at a photodetector (PD), an LCMW is generated. The bandwidth of the LCMW is over 50 GHz and the temporal duration is over 30 µs, with an ultra-large TBWP of 1.5 × 106. Thanks to the strong tunability of the MDR in the FDML laser, the generated LCMW is fully tunable in terms of bandwidth, temporal duration, chirp rate, and center frequency.

Suggested Citation

  • Jian Tang & Beibei Zhu & Weifeng Zhang & Ming Li & Shilong Pan & Jianping Yao, 2020. "Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17264-8
    DOI: 10.1038/s41467-020-17264-8
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    Cited by:

    1. Mingjian Li & Tengfei Hao & Guozheng Li & Anle Wang & Yitang Dai & Wei Li & José Capmany & Jianping Yao & Ninghua Zhu & Ming Li, 2024. "Time-variant parity-time symmetry in frequency-scanning systems," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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