Phase Chaos Synchronization of Semiconductor Lasers Driven by a Common Signal

Jing Wang; Xiaoxin Mao; Longsheng Wang; Anbang Wang

doi:10.3788/LOP231639

Laser & Optoelectronics Progress, Volume. 61, Issue 15, 1514002(2024)

Phase Chaos Synchronization of Semiconductor Lasers Driven by a Common Signal

Jing Wang^1,2, Xiaoxin Mao^1,2, Longsheng Wang^1,2, and Anbang Wang^1,2,3、*

¹Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

²College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

³Guangdong Provincial Key Laboratory of Information Photonics Technology, College of Information Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China

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Figures & Tables(10)

Fig. 1. The scheme of phase chaos synchronization of semiconductor laser driven by a common signal

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Fig. 2. Typical results of phase chaos synchronization. (a) Phase time series; (b) cross correlation curve;(c) phase difference Δφ; (d) probability distribution of phase difference

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Fig. 3. Phase difference and its probability distribution under different linewidths. (a) (b) Linewidth is 16 MHz; (c) (d) linewidth is 5 MHz; (e) (f) linewidth is 2.5 MHz

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Fig. 4. The influence of laser linewidth on synchronization coefficient and standard deviation σ, κ_j=0.15, Δν=-2 GHz

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Fig. 5. The influence of injection parameters on synchronization coefficient and standard deviation σ. (a) Injection strength κ_j, linewidth is 8 MHz, Δν=0 GHz; (b) frequency detuning Δν,linewidth is 8 MHz, κ_j=0.15

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Fig. 6. Numerical results of phase chaos synchronization after 160 km optical fiber transmission. (a) Time series; (b) cross correlation curve; (c) phase difference; (d) probability distribution of phase difference

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Fig. 7. The influence of parameters on synchronization coefficient and standard deviation σ. (a) Fiber-input power P_in; (b) dispersion compensation deviation Δβ

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Fig. 8. The influence of fiber length on synchronization coefficient and standard deviation σ. (a) Synchronization coefficient and corresponding optimum fiber input power; (b) standard deviation σ

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Table 1. Parameters of DFB semiconductor laser

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Table 1. Parameters of DFB semiconductor laser

Symbol	Description	Value
N₀	Carrier density transparency /m^-3	1.5×10²⁴
α	Linewidth factor	3.0
ε	Nonlinear gain coefficient /m³	1×10^-23
N_I	Initial carrier density /m^-3	1.0×10²⁴
Τ_g	Grating period /m	200.0×10^-9
G_g	Gain coefficient linear /m²	3×10^-20
L	Active section length /μm	350
W	Active section width /μm	2.5
n	Group index	3.7

Table 2. Parameters and values of standard single-mode fiber
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Table 2. Parameters and values of standard single-mode fiber
Symbol Parameter Value
S_l Dispersion slope /（s/m³） -0.08×10³
r Raman fraction 0.17
n₂ Nonlinear index /（m²/W） 2.6×10^-20
A_eff Core area /m² 80.0×10^-12
x₁ SPM-EC 8/9

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Jing Wang, Xiaoxin Mao, Longsheng Wang, Anbang Wang. Phase Chaos Synchronization of Semiconductor Lasers Driven by a Common Signal[J]. Laser & Optoelectronics Progress, 2024, 61(15): 1514002

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