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Laser & Optoelectronics Progress, Volume. 62, Issue 3, 0306002(2025)

Enhancement of the Chaotic Signal's Cavity Time-Delay Signature Based on Coupling With a Whispering-Gallery Mode Microcavity

Tao Jiang1,2、*, Xiaoxiao Huang1,2, Tong Zhao1,2, Yuanyuan Guo1,2, Pengfa Chang1,2, and Anbang Wang1,2,3
Author Affiliations
  • 1Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
  • 2School of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
  • 3Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, Guangdong , China
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    Diagram of the TDS enhancement experimental setup based on the whispering-gallery mode microcavity

    Fig. 1. Diagram of the TDS enhancement experimental setup based on the whispering-gallery mode microcavity

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    Transmission spectra of the whispering gallery mode microcavity used and chaotic optical signal states before and after coupling with the whispering-gallery mode microcavity. (a) Transmission spectrum of the whispering gallery mode microcavity; (b) optical spectrum; (c) temporal waveform; (d) frequency spectrum

    Fig. 2. Transmission spectra of the whispering gallery mode microcavity used and chaotic optical signal states before and after coupling with the whispering-gallery mode microcavity. (a) Transmission spectrum of the whispering gallery mode microcavity; (b) optical spectrum; (c) temporal waveform; (d) frequency spectrum

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    Transmission spectra of the whispering gallery mode microcavity under different coupling states and their TDS enhancement effects. (a1)(a2)(a3) Transmission spectrum, temporal waveform, and autocorrelation curve in the under-coupling state; (b1) (b2)(b3) transmission spectrum, temporal waveform, and autocorrelation curve in the critical-coupling state; (c1) (c2) (c3) transmission spectrum, temporal waveform, and autocorrelation curve in the over-coupling state

    Fig. 3. Transmission spectra of the whispering gallery mode microcavity under different coupling states and their TDS enhancement effects. (a1)(a2)(a3) Transmission spectrum, temporal waveform, and autocorrelation curve in the under-coupling state; (b1) (b2)(b3) transmission spectrum, temporal waveform, and autocorrelation curve in the critical-coupling state; (c1) (c2) (c3) transmission spectrum, temporal waveform, and autocorrelation curve in the over-coupling state

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    TDS enhancement effect diagram under different coupling positions

    Fig. 4. TDS enhancement effect diagram under different coupling positions

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    TDS enhancement effect of DFB laser output chaotic light under different feedback intensities. (a) TDS values before and after enhancement under different feedback intensities; (b) enhancement percentage achieved under different feedback intensities

    Fig. 5. TDS enhancement effect of DFB laser output chaotic light under different feedback intensities. (a) TDS values before and after enhancement under different feedback intensities; (b) enhancement percentage achieved under different feedback intensities

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    TDS enhancement effect obtained under different bandwidths. (a) TDS values before and after enhancement; (b) enhancement percentage

    Fig. 6. TDS enhancement effect obtained under different bandwidths. (a) TDS values before and after enhancement; (b) enhancement percentage

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    Tao Jiang, Xiaoxiao Huang, Tong Zhao, Yuanyuan Guo, Pengfa Chang, Anbang Wang. Enhancement of the Chaotic Signal's Cavity Time-Delay Signature Based on Coupling With a Whispering-Gallery Mode Microcavity[J]. Laser & Optoelectronics Progress, 2025, 62(3): 0306002

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: May. 13, 2024

    Accepted: Jun. 2, 2024

    Published Online: Feb. 12, 2025

    The Author Email:

    DOI:10.3788/LOP241264

    CSTR:32186.14.LOP241264

    Topics

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