Optimization Scheme of Multi-Span Relay Amplification Along Optical Fiber Link for Simultaneous Sensing and Communication (Invited)

Yang Lu; Jiexuan Gu; Pengcheng Liu; Mo Chen; Qiang Bian; Jianfei Wang; Xiaoyang Hu; Yu Chen; Wei Chen; Zhou Meng

doi:10.3788/AOS251165

Acta Optica Sinica, Volume. 45, Issue 13, 1306033(2025)

Optimization Scheme of Multi-Span Relay Amplification Along Optical Fiber Link for Simultaneous Sensing and Communication (Invited)

Yang Lu, Jiexuan Gu, Pengcheng Liu, Mo Chen, Qiang Bian, Jianfei Wang, Xiaoyang Hu, Yu Chen, Wei Chen, and Zhou Meng^*

Author Affiliations

College of Meteorology and Oceanology, National University of Defense Technology, Changsha 410000, Hunan , China

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Figures & Tables(7)

Fig. 1. Schematic of a bidirectional EDFA module

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Fig. 2. Schematic of cascade amplified Rayleigh backscattering signals

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Fig. 3. Simulation results of R_SN distributions along fiber of 100 km in case of different values of M

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Fig. 4. Illustration of experimental setup based on LFM-DAS system and cascaded optical fiber link

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Fig. 5. Intensity distributions of Rayleigh backscattering signals with different M when L=100 km

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Fig. 6. Experimental and simulation results of R_SN distribution along a fiber span of L=100 km in cases of different M

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Table 1. Parameters used in simulation
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Table 1. Parameters used in simulation
Parameter Value
$α$ $4.605 \times 10^{- 5}$
c /（m·s） $3 \times 10^{8}$
$T_{P} / s$ $2 \times 10^{- 5}$
n $1.467$
n_sp 1
h $/ (N \cdot m / s)$ $6.626 \times 10^{- 34}$
ν /Hz $1.935 \times 10^{14}$
Δν $/ H z$ $3 \times 10^{3}$
$L / k m$ $1 \times 10^{2}$
B /MHz $60$
Δν_Β /MHz $30$
ν_Β /GHz $10.8$
g_p / $(m / W)$ $3 \times 10^{- 11}$
A_eff /μm² $50$
K 2/3

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Yang Lu, Jiexuan Gu, Pengcheng Liu, Mo Chen, Qiang Bian, Jianfei Wang, Xiaoyang Hu, Yu Chen, Wei Chen, Zhou Meng. Optimization Scheme of Multi-Span Relay Amplification Along Optical Fiber Link for Simultaneous Sensing and Communication (Invited)[J]. Acta Optica Sinica, 2025, 45(13): 1306033

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