Acta Optica Sinica, Volume. 43, Issue 4, 0406003(2023)
Accurate Mode Decomposition for Ring Core Fibers Based on Deep Learning
Fig. 1. Diagram of FM-RCF characteristics. (a) Refractive index profile; (b) typical mode field profiles of fiber modes; (c) 8-mode (LP01, LP11o, LP11e, LP21o, LP21e, LP31e, LP31o, and LP02) superposition beam patterns in fiber core
Fig. 2. Illustration of proposed CNN architecture
Fig. 3. Loss value of CNN as a function of epochs for two MD methods in 3-mode superposition case
Fig. 4. Comparison of modal coefficient error. (a) Modal weight error; (b) modal relative phase error
Fig. 5. Typical reconstructed spot examples for different mode superposition. (a) 3-mode case; (b) 5-mode case; (c) 7-mode case; (d) 8-mode case
Fig. 6. Experimental setup for recording real beam patterns
Fig. 7. Typical reconstructed examples based on real spot patterns for 3-mode superposition case
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Zichen Tian, Li Pei, Jianshuai Wang, Bing Bai, Kaihua Hu, Jingjing Zheng, Lei Shen, Wenxuan Xu. Accurate Mode Decomposition for Ring Core Fibers Based on Deep Learning[J]. Acta Optica Sinica, 2023, 43(4): 0406003
Category: Fiber Optics and Optical Communications
Received: Aug. 2, 2022
Accepted: Sep. 19, 2022
Published Online: Feb. 16, 2023
The Author Email: Pei Li (lipei@bjtu.edu.cn)