研究目的
Investigating the applicability of the S-bend model to strongly coupled RCF supporting five spatial modes for optical MIMO transmission and demonstrating the reduction in MDL possible by promoting binding in five-mode RCF.
研究成果
The study successfully demonstrates the reduction in GDS and MDL in a five-mode RCF through the application of the S-bend model and mode coupling. The proposed MUX/DEMUX design achieves low insertion loss, facilitating efficient mode-division multiplexed transmission with MIMO DSP.
研究不足
The study is limited by the specific design and fabrication of the five-mode RCF and the experimental conditions under which the GDS and MDL reductions were observed. Further research is needed to explore the applicability of these findings to other fiber designs and deployment scenarios.
1：Experimental Design and Method Selection:
The study focuses on the extensibility of the S-bend model to five-mode RCF, proposing a MUX/DEMUX for the five-mode RCF and evaluating the in-bobbin state with different barrel sizes.
2：Sample Selection and Data Sources:
A fabricated trench-assisted RCF designed to propagate LP01, LP11, and LP21 modes is used.
3：List of Experimental Equipment and Materials:
Includes a mode selective exciter, phase plates, and a fabricated five-mode RCF.
4：Experimental Procedures and Operational Workflow:
Involves measuring the GDS of the RCF wound on bobbins with different radii and conducting a 10 × 10 MIMO transmission experiment.
5：Data Analysis Methods:
The study employs DSP comprising 10 × 10 MIMO adaptive equalization for signal processing.
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