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Acta Optica Sinica, Volume. 44, Issue 21, 2114001(2024)

Broadband Laser Chaos Generated by Distributed Reflection Laser with Optical Feedback

Wenkang Fang1,2, Zhiwei Jia1,2、*, Qingtian Li1,2, Ying Liu1,2, Lei Gong1,2, Longsheng Wang1,2, Yuanyuan Guo1,2, and Anbang Wang1,3、**
Author Affiliations
  • 1Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
  • 2College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Jinzhong 030600, Shanxi , China
  • 3Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education, Guangdong University of Technology, Guangzhou 510006, Guangdong , China
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    Structural diagram of optical-feedback three-section DR laser (it consists of DFB section, phase section, and DBR section)

    Fig. 1. Structural diagram of optical-feedback three-section DR laser (it consists of DFB section, phase section, and DBR section)

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    Modulation response curves of three-section DR laser and DFB laser

    Fig. 2. Modulation response curves of three-section DR laser and DFB laser

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    Optical spectra, power spectra, and time series of four typical dynamic states in optical-feedback three-section DR laser [IDFB=100 mA, IP=50 mA, IDBR=50 mA, and Kf is 0.0098 (row 1), 0.0143 (row 2), 0.0348 (row 3), and 0.0501 (row 4), respectively]. (a1)‒(a3) Optical spectra; (b1)‒(b3) power spectra; (c1)‒(c3) time series

    Fig. 3. Optical spectra, power spectra, and time series of four typical dynamic states in optical-feedback three-section DR laser [IDFB=100 mA, IP=50 mA, IDBR=50 mA, and Kf is 0.0098 (row 1), 0.0143 (row 2), 0.0348 (row 3), and 0.0501 (row 4), respectively]. (a1)‒(a3) Optical spectra; (b1)‒(b3) power spectra; (c1)‒(c3) time series

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    Duty cycle of intermittent oscillation as a function of feedback strength, and chaos bandwidths of three-section DR lasers and DFB lasers as functions of feedback strength. (a) Duty cycle of intermittent oscillation as a function of feedback strength; (b) chaos bandwidths of DR lasers and DFB lasers as functions of feedback strength

    Fig. 4. Duty cycle of intermittent oscillation as a function of feedback strength, and chaos bandwidths of three-section DR lasers and DFB lasers as functions of feedback strength. (a) Duty cycle of intermittent oscillation as a function of feedback strength; (b) chaos bandwidths of DR lasers and DFB lasers as functions of feedback strength

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    Comparison of power spectra of DR laser and DFB laser

    Fig. 5. Comparison of power spectra of DR laser and DFB laser

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    Variations of chaos bandwidth and PPR frequency of DR laser under condition of IDFB=100 mA. (a1)(a2) With fixed IP=100 mA, variations of chaos bandwidth and PPR frequency of DR laser with IDBR; (b1)(b2) with fixed IDBR=100 mA, variations of chaos bandwidth and PPR frequency of DR laser with IP

    Fig. 6. Variations of chaos bandwidth and PPR frequency of DR laser under condition of IDFB=100 mA. (a1)(a2) With fixed IP=100 mA, variations of chaos bandwidth and PPR frequency of DR laser with IDBR; (b1)(b2) with fixed IDBR=100 mA, variations of chaos bandwidth and PPR frequency of DR laser with IP

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    • Table 1. Main simulation parameters of DR laser

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      Table 1. Main simulation parameters of DR laser

      ExplanationValue
      DFBPhaseDBR
      Section length L /μm220200320
      Section width W /μm2.52.52.5
      Group velocity index n3.53.53.5
      Coupling coefficient of index grating κi /cm-180—100
      Grating period Λ /m2×10-72×10-7
      Gain grating coupling coefficient κg /cm-120——
      Internal loss a /cm-1303030
      Linewidth enhancement factor αH3——
      Linear recombination coefficient A /s-13×1083×1083×108
      Bimolecular recombination coefficient B /（m3/s）1.0×10-161.0×10-161.0×10-16
      Auger recombination coefficient C /（m6/s）1.3×10-411.3×10-411.3×10-41
      Transparency carrier density N0 /（m3/s）1.5×1024——
      Reflectivity of facet R0.3—0.8
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    Wenkang Fang, Zhiwei Jia, Qingtian Li, Ying Liu, Lei Gong, Longsheng Wang, Yuanyuan Guo, Anbang Wang. Broadband Laser Chaos Generated by Distributed Reflection Laser with Optical Feedback[J]. Acta Optica Sinica, 2024, 44(21): 2114001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: May. 13, 2024

    Accepted: Jun. 19, 2024

    Published Online: Nov. 20, 2024

    The Author Email: Jia Zhiwei (jiazhiwe@tyut.edu.cn), Wang Anbang (abwang@gdut.edu.cn)

    DOI:10.3788/AOS241000

    CSTR:32393.14.AOS241000

    Topics

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