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Chinese Journal of Lasers, Volume. 52, Issue 17, 1701004(2025)

Widely Tunable Narrow‑Linewidth Wavelength‑Locked DBR Laser Based on Micro‑Ring Resonator Self‑Injection Locking Technology

Xiangyue Li1,2, Qingshuai Su3、*, Fang Wei3、**, Chen Chen2, Haoyang Pi2, Huimin Wu2, Kangwen Yang1、***, Qing Ye2, Yi Yan3, and Haiwen Cai3
Author Affiliations
  • 1School of Optoelectronic Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 2Aerospace Laser Technology and Systems Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Zhangjiang Laboratory, Shanghai 201210, China
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    AbstractGet PDF(in Chinese)
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    Figures & Tables(7)
    Structural diagram of WL-SIL laser and principle of wide-tuning self-injection locking

    Fig. 1. Structural diagram of WL-SIL laser and principle of wide-tuning self-injection locking

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    Photograph of external cavity chip used for DBR laser self-injection locking

    Fig. 2. Photograph of external cavity chip used for DBR laser self-injection locking

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    Experimental results. (a) Transmission spectra of microring resonator; (b) transmission spectrum and peak search result of microring resonator; (c) FSR measurement result

    Fig. 3. Experimental results. (a) Transmission spectra of microring resonator; (b) transmission spectrum and peak search result of microring resonator; (c) FSR measurement result

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    Performance testing of microring resonator. (a) Loaded Q-factor and intrinsic Q-factor; (b) extinction ratio; (c) waveguide transmission loss; (d) power coupling ratio

    Fig. 4. Performance testing of microring resonator. (a) Loaded Q-factor and intrinsic Q-factor; (b) extinction ratio; (c) waveguide transmission loss; (d) power coupling ratio

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    Tuning curves of DBR laser. (a) Free running; (b) self-injection locking

    Fig. 5. Tuning curves of DBR laser. (a) Free running; (b) self-injection locking

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    Spectra of WL-SIL laser under different optical feedback intensities

    Fig. 6. Spectra of WL-SIL laser under different optical feedback intensities

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    Performance test of WL-SIL laser. (a) Tuning spectrum; (b) correspondence between wavelength tuning and current;

    Fig. 7. Performance test of WL-SIL laser. (a) Tuning spectrum; (b) correspondence between wavelength tuning and current;

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    Xiangyue Li, Qingshuai Su, Fang Wei, Chen Chen, Haoyang Pi, Huimin Wu, Kangwen Yang, Qing Ye, Yi Yan, Haiwen Cai. Widely Tunable Narrow‑Linewidth Wavelength‑Locked DBR Laser Based on Micro‑Ring Resonator Self‑Injection Locking Technology[J]. Chinese Journal of Lasers, 2025, 52(17): 1701004

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    Paper Information

    Category: laser devices and laser physics

    Received: Mar. 3, 2025

    Accepted: May. 6, 2025

    Published Online: Sep. 13, 2025

    The Author Email: Qingshuai Su (suqs@siom.ac.cn), Fang Wei (weifang@siom.ac.cn), Kangwen Yang (kangwenyang@yeah.net)

    DOI:10.3788/CJL250571

    CSTR:32183.14.CJL250571

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology