Infrared and Laser Engineering, Volume. 51, Issue 5, 20220302(2022)

Optical frequency comb in silicon nitride microresonator(Invited)

Jin Li1...2, Piyu Wang1,2, Zhengyu Wang1,2, Rui Niu1,2, Shuai Wan1,2,*, Guangcan Guo1,2, and Chunhua Dong12 |Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China
  • 2Center For Excellence in Quantum Information and Quantum Physics, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China
  • show less
    Figures & Tables(4)
    Conceptual representation of the optical loss in the microresonator at low power
    (a) Schematic diagram of the silicon nitride microring resonator before redeposition of film, silica protective layer has been deposited above the coupling waveguide; (b) Side view of the silicon nitride microring resonator with the redeposited film
    (a) Statistical histograms of intrinsic Q of silicon nitriding microring resonator before (blue histogram) and after (orange histogram) deposition of thin films, which includes intrinsic Q of all fundamental TM modes between 1550 nm and 1625 nm; (b)-(c) The transmission power spectrum of the optical mode with the highest intrinsic Q before and after the redeposition. The loaded Q by Lorentz fitting is 2.84×106 and 3.44×106, respectively, and the corresponding intrinsic Q is 2.91×106 and 4.15×106, respectively
    (a) Transmission spectrum of the TM mode in the silicon nitride microring resonator; (b) The change of the intracavity power and the transmitted power with the pump light sweeping from the blue detuning to the red detuning, where distinct soliton steps can be observed; (c) The generated spectral spectrum of the soliton microcomb, the envelope perturbation is caused by avoided mode crossings; (d) The spectral spectrum of the soliton microcomb and the corresponding integrated dispersion curve, the dispersion abrupt change on the dispersion curve corresponds to the envelope perturbation on the soliton microcomb spectrum
    Tools

    Get Citation

    Copy Citation Text

    Jin Li, Piyu Wang, Zhengyu Wang, Rui Niu, Shuai Wan, Guangcan Guo, Chunhua Dong. Optical frequency comb in silicon nitride microresonator(Invited)[J]. Infrared and Laser Engineering, 2022, 51(5): 20220302

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Special issue—Microcavity optical frequency comb technology

    Received: Feb. 20, 2022

    Accepted: May. 13, 2022

    Published Online: Jun. 14, 2022

    The Author Email: Wan Shuai (wanshuai@ustc.edu.cn)

    DOI:10.3788/IRLA20220302

    Topics