Comparative modal analysis in micro–nano-optical fiber tapers using spectral parameter power series method and exact modes method

IF 2.2 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Computational Electronics Pub Date : 2023-01-13 DOI:10.1007/s10825-023-02006-y

R. Castillo-Perez, J. R. Ek-Ek, C. E. Jacome-Peñaherrera, D. Jauregui-Vazquez, R. Sanchez-Lara, H. L. Offerhaus, J. A. Alvarez-Chavez

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引用次数: 0

Abstract

This work presents a comparative theoretical analysis of spatial modal evolution in micro/nano-optical fiber (MNF) tapers. The study proposes the use of the Spectral Parameter Power Series (SPPS) Method and compares its performance with results from the so-called Exact Modes Method (EMM) and the Finite Element Method (FEM) (the method employed by the COMSOL© software in which the computations were implemented). By using these techniques, the modal analysis and intensity evolution are discussed along different sections of the optical fiber taper. Furthermore, the data are compared considering experimental values from a real micro/nano-optical fiber taper sample. The SPPS method offers a competitive accuracy and versatility to deal with graded index profiles, its computational costs are low, and its implementation is relatively easy. The results from the SPPS method fit to those of the EM method, which sometimes involves intricated models, and those of the FEM, which may require more computational time. The SPPS method offers an average relative error of less than 5% with respect to the exact method with less computational cost compared to the FEM method for radii bigger than 2 μm at 1550 nm.

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采用谱参数幂级数法和精确模态法对微纳光纤锥度进行模态比较分析

本文对微/纳米光纤(MNF)锥体的空间模态演化进行了比较理论分析。该研究建议使用谱参数幂级数(SPPS)方法，并将其性能与所谓的精确模态法(EMM)和有限元法(FEM) (COMSOL©软件采用的方法)的结果进行比较。利用这些技术，讨论了沿光纤锥度不同截面的模态分析和强度演化。并与实际微纳光纤锥度样品的实验值进行了比较。SPPS方法在处理分级索引剖面方面具有一定的准确性和通用性，计算成本低，实现相对容易。SPPS法的计算结果与EM法的计算结果和FEM法的计算结果相吻合，而EM法有时涉及复杂的模型，而FEM法的计算时间较长。在1550 nm半径大于2 μm的情况下，与有限元法相比，SPPS法的平均相对误差小于5%，计算成本更低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Computational Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED

CiteScore

4.50

自引率

4.80%

发文量

142

审稿时长

>12 weeks

期刊介绍： he Journal of Computational Electronics brings together research on all aspects of modeling and simulation of modern electronics. This includes optical, electronic, mechanical, and quantum mechanical aspects, as well as research on the underlying mathematical algorithms and computational details. The related areas of energy conversion/storage and of molecular and biological systems, in which the thrust is on the charge transport, electronic, mechanical, and optical properties, are also covered. In particular, we encourage manuscripts dealing with device simulation; with optical and optoelectronic systems and photonics; with energy storage (e.g. batteries, fuel cells) and harvesting (e.g. photovoltaic), with simulation of circuits, VLSI layout, logic and architecture (based on, for example, CMOS devices, quantum-cellular automata, QBITs, or single-electron transistors); with electromagnetic simulations (such as microwave electronics and components); or with molecular and biological systems. However, in all these cases, the submitted manuscripts should explicitly address the electronic properties of the relevant systems, materials, or devices and/or present novel contributions to the physical models, computational strategies, or numerical algorithms.