Simović Ana, Drljača Branko, Kovačević Milan S, Kuzmanović Ljubica, Djordjevich Alexandar, Aidinis Konstantinos, Yu Changyuan, Deng Xiong, Savović Svetislav
Faculty of Science, University of Kragujevac, R. Domanovića 12, Kragujevac, 34000, Serbia.
Faculty of Sciences and Mathematics, University of Priština in Kosovska Mitrovica, Lole Ribara 29, Kosovska Mitrovica, Serbia.
Sci Rep. 2025 May 16;15(1):17108. doi: 10.1038/s41598-025-01411-6.
A new design of multimode W-type (doubly clad) microstructured plastic optical fiber (mPOF) with graded-index (GI) distribution of the core is proposed, along with a methodology for examining transmission along it. The power flow equation's (PFE) numerical solution yields the transmission properties of the W-type GI mPOF. We have demonstrated that the coupling length L at which an equilibrium mode distribution (EMD) is reached in W-type GI mPOF is shorter than the length experimentally found for the conventional singly- clad (SC) GI POF. This results from leaky mode losses, which lower the length L in W-type GI mPOF by lowering the amount of higher guided modes engaged in the coupling process. As a result, the bandwidth of W-type GI mPOF significantly increases. It is noteworthy that, when compared to the experimental bandwidth of commercially available conventional POFs, the bandwidth of the W-type GI mPOF proposed in this work is noticeably higher. Consequently, the bandwidth performance of short-haul communication lines may be significantly improved by using such a designed W-type GI mPOF.
提出了一种新型的多模W型（双包层）微结构塑料光纤（mPOF）设计，其纤芯具有渐变折射率（GI）分布，并给出了一种研究沿其传输特性的方法。通过对功率流方程（PFE）进行数值求解，得到了W型GI mPOF的传输特性。我们已经证明，W型GI mPOF达到平衡模式分布（EMD）时的耦合长度L比传统单包层（SC）GI POF实验测得的长度要短。这是由泄漏模式损耗导致的，泄漏模式损耗通过减少参与耦合过程的高阶导模数量，降低了W型GI mPOF中的长度L。结果，W型GI mPOF的带宽显著增加。值得注意的是，与市售传统POF的实验带宽相比，本文提出的W型GI mPOF的带宽明显更高。因此，使用这种设计的W型GI mPOF可以显著提高短距离通信线路的带宽性能。
