Laser & Optoelectronics Progress, Volume. 57, Issue 21, 210607(2020)
Research on Chaos Resynchronization Time of Vertical-Cavity Surface-Emitting Lasers
Figures & Tables(8)
Fig. 1. Open-loop system structure and VCSEL performance curves. (a) Unidirectional open-loop synchronization system based on VCSEL; (b) P-I characteristic curves of free-running VCSEL
Fig. 2. Resynchronization transient process and CRT calculation method. (a) Step change of injection rate and normalized intensity of M-VCSEL; (b) normalized intensity of s-vcsel; (c) synchronization error
Fig. 3. Influence of different laser parameters on CRT in X-PC. (a) I/Ith; (b) γN; (c) k; (d) g
Fig. 4. Relationship between CRT and ROT in X-PC under different laser parameters. (a) I/Ith; (b) γN; (c) k; (d)g
Fig. 5. Influence of different laser parameters on CRT in X-PC. (a) α; (b) γα; (c) γp; (d) γs
Fig. 6. Influence of different injection parameters on CRT in X-PC. (a) kj; (b) Δν
Fig. 7. Influence of different laser parameters on CRT in Y-PC. (a) I/Ith; (b) kj; (c) Δν
Table 1. VCSEL simulation parameter values[27-29]
View tableTable 1. VCSEL simulation parameter values[27-29]
Symbol Parameter Value k/ns-1 Field decay rate 300 α Linewidth enhancement factor 3 γα/ns-1 Linear dichroism 0.5 γp/ns-1 Linear birefringence 30 γN/ns-1 Carrier decay rate 1 γs/ns-1 Spin-flip relaxation rate 50 λ/nm Central wavelength 850 βSP/ns-1 Spontaneous emission rate 10-6 μ μ parameter μ=1+(τn/τe)[(I/Ith)-1]/[1-N0/Nth] τn/τe Ratio of differential carrier lifetime and carrier lifetime at threshold 0.4 e/C Electric charge 1.602×10-19 Γ Confinement factor 0.21 g/(m3·s-1) Gain coefficient 2×10-12 V/m3 Active region volume 0.44×10-18 N0/m-3 Transparency carrier density 2.5×1024 Nth/m-3 Threshold carrier density Nth=N0+2k/Γg Ith/mA Threshold current Ith=eVNth/τe=0.4eVNthγN I/mA Bias current Variable kf/ns-1 Feedback rate 5 τf/ns Feedback delay time 3
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Wu Mei, Wang Longsheng, Wang Yuncai, Wang Anbang. Research on Chaos Resynchronization Time of Vertical-Cavity Surface-Emitting Lasers[J]. Laser & Optoelectronics Progress, 2020, 57(21): 210607
Paper Information
Category: Fiber Optics and Optical Communications
Received: May. 7, 2020
Accepted: --
Published Online: Nov. 6, 2020
The Author Email: Anbang Wang (wanganbang@tyut.edu.cn)
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