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Dispersion engineering and frequency comb generation in thin silicon nitride concentric microresonators

Author

Listed:
  • Sangsik Kim

    (Purdue University
    Purdue University
    Purdue University
    Texas Tech University)

  • Kyunghun Han

    (Purdue University
    Purdue University)

  • Cong Wang

    (Purdue University)

  • Jose A. Jaramillo-Villegas

    (Purdue University
    Purdue University
    Universidad Tecnológica de Pereira)

  • Xiaoxiao Xue

    (Purdue University
    Tsinghua University)

  • Chengying Bao

    (Purdue University)

  • Yi Xuan

    (Purdue University
    Purdue University)

  • Daniel E. Leaird

    (Purdue University)

  • Andrew M. Weiner

    (Purdue University
    Purdue University
    Purdue University)

  • Minghao Qi

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

Abstract

Kerr nonlinearity-based frequency combs and solitons have been generated from on-chip microresonators. The initiation of the combs requires global or local anomalous dispersion which leads to many limitations, such as material choice, film thickness, and spectral ranges where combs can be generated, as well as fabrication challenges. Using a concentric racetrack-shaped resonator, we show that such constraints can be lifted and resonator dispersion can be engineered to be anomalous over moderately broad bandwidth. We demonstrate anomalous dispersion in a 300 nm thick silicon nitride film, suitable for semiconductor manufacturing but previously thought to result in waveguides with high normal dispersion. Together with a mode-selective, tapered coupling scheme, we generate coherent mode-locked frequency combs. Our method can realize anomalous dispersion for resonators at almost any wavelength and simultaneously achieve material and process compatibility with semiconductor manufacturing.

Suggested Citation

  • Sangsik Kim & Kyunghun Han & Cong Wang & Jose A. Jaramillo-Villegas & Xiaoxiao Xue & Chengying Bao & Yi Xuan & Daniel E. Leaird & Andrew M. Weiner & Minghao Qi, 2017. "Dispersion engineering and frequency comb generation in thin silicon nitride concentric microresonators," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00491-x
    DOI: 10.1038/s41467-017-00491-x
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    Cited by:

    1. Yaojing Zhang & Keyi Zhong & Xuetong Zhou & Hon Ki Tsang, 2022. "Broadband high-Q multimode silicon concentric racetrack resonators for widely tunable Raman lasers," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. J. M. Chavez Boggio & D. Bodenmüller & S. Ahmed & S. Wabnitz & D. Modotto & T. Hansson, 2022. "Efficient Kerr soliton comb generation in micro-resonator with interferometric back-coupling," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    3. Terence Blésin & Wil Kao & Anat Siddharth & Rui N. Wang & Alaina Attanasio & Hao Tian & Sunil A. Bhave & Tobias J. Kippenberg, 2024. "Bidirectional microwave-optical transduction based on integration of high-overtone bulk acoustic resonators and photonic circuits," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    4. Su-Peng Yu & Erwan Lucas & Jizhao Zang & Scott B. Papp, 2022. "A continuum of bright and dark-pulse states in a photonic-crystal resonator," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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