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An integrated parity-time symmetric wavelength-tunable single-mode microring laser

Author

Listed:
  • Weilin Liu

    (Microwave Photonics Research Laboratory, University of Ottawa)

  • Ming Li

    (Microwave Photonics Research Laboratory, University of Ottawa
    Present address: State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.)

  • Robert S. Guzzon

    (University of California Santa Barbara)

  • Erik J. Norberg

    (University of California Santa Barbara)

  • John S. Parker

    (University of California Santa Barbara)

  • Mingzhi Lu

    (University of California Santa Barbara)

  • Larry A. Coldren

    (University of California Santa Barbara)

  • Jianping Yao

    (Microwave Photonics Research Laboratory, University of Ottawa)

Abstract

Mode control in a laser cavity is critical for a stable single-mode operation of a ring laser. In this study we propose and experimentally demonstrate an electrically pumped parity-time (PT)-symmetric microring laser with precise mode control, to achieve wavelength-tunable single-mode lasing with an improved mode suppression ratio. The proposed PT-symmetric laser is implemented based on a photonic integrated circuit consisting of two mutually coupled active microring resonators. By incorporating multiple semiconductor optical amplifiers in the microring resonators, the PT-symmetry condition can be achieved by a precise manipulation of the interplay between the gain and loss in the two microring resonators, and the incorporation of phase modulators in the microring resonators enables continuous wavelength tuning. Single-mode lasing at 1,554.148 nm with a sidemode suppression ratio exceeding 36 dB is demonstrated and the lasing wavelength is continuously tunable from 1,553.800 to 1,554.020 nm.

Suggested Citation

  • Weilin Liu & Ming Li & Robert S. Guzzon & Erik J. Norberg & John S. Parker & Mingzhi Lu & Larry A. Coldren & Jianping Yao, 2017. "An integrated parity-time symmetric wavelength-tunable single-mode microring laser," Nature Communications, Nature, vol. 8(1), pages 1-6, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15389
    DOI: 10.1038/ncomms15389
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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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