Prediction of Optical Fiber Tapering Diameter Based on Nonisothermal Flow Model and Neural Network

Li Li; Jiarong Zheng; Xiuquan Ma

doi:10.3788/CJL230502

Chinese Journal of Lasers, Volume. 50, Issue 11, 1101015(2023)

Prediction of Optical Fiber Tapering Diameter Based on Nonisothermal Flow Model and Neural Network

Li Li¹, Jiarong Zheng^1,2, and Xiuquan Ma^1,3,4、*

Author Affiliations

¹School of Mechanical Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China

²GZ Photonics Technology Co., Ltd., Dongguan 523835, Guangdong, China

³Hubei Optics Valley Laboratory, Wuhan 430074, Hubei, China

⁴State Key Laboratory of Digital Manufacturing Equipment and Technology, Wuhan 430074, Hubei, China

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Figures & Tables(6)

Fig. 1. Nonisothermal flow model of fiber tapering and its boundary condition

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Fig. 2. Distribution of temperature field and velocity field during tapering under fixed heat source. (a) Temperature field; (b) velocity field

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Fig. 3. Experimental verification of tapering profile simulation. (a) Tapering experiment; (b) comparison of simulation results and experimental results of tapered profiles

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Fig. 4. Structure of BP neural network

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Fig. 5. Comparison of neural network predicted diameters and simulated diameters

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Table 1. Parameters of glass used in simulation

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Table 1. Parameters of glass used in simulation

Parameter	Value	Ref.
Density /（kg/m³）	2200
Surface tension /（N/m）	0.3	［16］
Viscosity /（Pa·s）	$\{\begin{matrix} 3.8 \times 10^{- 14} e x p (\frac{85640}{T}), T < 1670 K \\ 5.8 \times 10^{- 8} e x p (\frac{61990}{T}), T > 1670 K \end{matrix}$	［17］
Heat conductivity /［W/（m·K）］	$\{\begin{matrix} 0.9786 + 1.12 \times 10^{- 3} T, 300 K \leq T \leq 1100 K \\ 2.0504 + 1.177 \times 10^{- 4} T, 1100 K < T \leq 2200 K \end{matrix}$	［18］
Specific heat capacity /［J/（kg·K）］	$\{\begin{matrix} \begin{array}{l} 35.936 + 3.3668 T - 0.0041 T^{2} + 2.5803 \times 10^{- 6} T^{3} - \\ 8.0867 \times 10^{- 10} T^{4} + 9.9048 \times 10^{- 14} T^{5}, 273 K \leq T \leq 1973 K \end{array} \\ 1273, 1973 K < T \leq 2200 K \end{matrix}$	［18］

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Li Li, Jiarong Zheng, Xiuquan Ma. Prediction of Optical Fiber Tapering Diameter Based on Nonisothermal Flow Model and Neural Network[J]. Chinese Journal of Lasers, 2023, 50(11): 1101015

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Paper Information

Category: laser devices and laser physics

Received: Feb. 8, 2023

Accepted: Mar. 6, 2023

Published Online: May. 29, 2023

The Author Email: Ma Xiuquan (xma@hust.edu.cn)

DOI:10.3788/CJL230502

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology