Laser & Optoelectronics Progress, Volume. 62, Issue 3, 0314007(2025)

Theoretical Analysis and Optimization of Switching Time of All-Optical Flip-Flops Based on VCSEL

Zhiqiang Xia1、*, Pu Li2,3,4, Qiang Cai5, Shiyu Liang1, Qizhi Li1, Yuwen Qin2,3,4, and Yuncai Wang2,3,4
Author Affiliations
  • 1Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi , China
  • 2Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong , China
  • 3Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education, Guangdong University of Technology, Guangzhou 510006, Guangdong , China
  • 4Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, Guangdong , China
  • 5Department of Physics, Taiyuan Normal University, Jinzhong 030619, Shanxi , China
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    All-optical flip-flops based on vertical-cavity surface-emitting lasers (VCSEL) have the potential for a wide range of applications in all-optical signal processing. However, the relationship between the switching time and internal parameters of the laser has not yet been fully understood. To fill this research gap, this paper presents a systematic numerical simulation study on the polarization switching behavior of VCSEL induced by polarization optical injection with the a spin-flip model. The simulation analysis explores the influence mechanism of the internal parameters of the laser on the switching time of the all-optical flip-flop in depth. Based on this, the key parameters, namely the spin flip-flop rate and field decay rate, are further optimized to reduce the switching time and increase the flip-flop repetition frequency. Through parameter optimization, an all-optical flip-flop operation with a high repetition frequency can be achieved. Additionally, by introducing injection detuning and combining it with appropriate injection intensities, the repetition frequency of the all-optical flip-flops can be further improved.

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    Zhiqiang Xia, Pu Li, Qiang Cai, Shiyu Liang, Qizhi Li, Yuwen Qin, Yuncai Wang. Theoretical Analysis and Optimization of Switching Time of All-Optical Flip-Flops Based on VCSEL[J]. Laser & Optoelectronics Progress, 2025, 62(3): 0314007

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    Paper Information

    Category: Lasers and Laser Optics

    Received: May. 29, 2024

    Accepted: Jun. 17, 2024

    Published Online: Feb. 18, 2025

    The Author Email:

    DOI:10.3788/LOP241386

    CSTR:32186.14.LOP241386

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