Laser & Optoelectronics Progress, Volume. 62, Issue 3, 0314007(2025)
Theoretical Analysis and Optimization of Switching Time of All-Optical Flip-Flops Based on VCSEL
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.
Get Citation
Copy Citation Text
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
Category: Lasers and Laser Optics
Received: May. 29, 2024
Accepted: Jun. 17, 2024
Published Online: Feb. 18, 2025
The Author Email:
CSTR:32186.14.LOP241386