Low crosstalk six-core five-mode fiber with high refractive index rings and air trench

Tianqi Hu, Mengdi An, Biyun Luo and Hongzhi Jia *

School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, China.
 
Review
International Journal of Science and Research Archive, 2024, 11(01), 2129–2138.
Article DOI: 10.30574/ijsra.2024.11.1.0211
Publication history: 
Received on 27 December 2023; revised on 04 February 2024; accepted on 07 February 2024
 
Abstract: 
A novel six-core five-mode fiber composed of an air trench and high refractive index ring is proposed in this paper. Numerical analysis shows that the fiber can stably transmit five LP modes in the C + L band. The effective refractive index difference of the five LP modes at 1.55 μm is more significant than 1.4 × 10-3, which is conducive to the independent transmission of the modes. The inter-core crosstalk of the fiber is less than -95 (dB / 100km). Therefore, the fiber can be well used to build a large-capacity optical fiber transmission system.
 
Keywords: 
Multi-core fiber; Crosstalk; Few-mode multi-core fiber; Air trench
 
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