Investigating the influence of material composition and design parameters on optical loss in hollow core fibers at 9.5 µm

IF 4 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-03-04 DOI:10.1007/s11082-025-08096-1

Zahraa Hummam, Hamid Vahed, Ali Pourziad

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Abstract

This study examines a novel design for hollow core metal fibers HCMF by systematically altering geometric factors. Various materials, such as gold, silver, aluminum, graphene, and silicon nitride Si₃N₄, were examined as substitutes for conventional metallic components to assess their influence on fiber performance at a wavelength of 9.5 µm. The optical losses of each material were studied using Lumerical Ansys 2023 and the finite-difference time-domain approach. Results demonstrated that Si₃N₄ had outstanding optical characteristics, with negligible optical loss approaching zero at the specified wavelength, rendering it suitable for low-attenuation applications; regarding the selection of Si₃N₄ as the material for the metal wires in the hollow-core fiber, subsequent modifications to the geometry, such as wire widths and the spacing between the wires and the core, enhanced fiber performance, achieving an optical confinement loss as minimal as 10⁻¹⁸ dB/m. This illustrates Si₃N₄ capability as an exceptional material for highly efficient hollow-core fiber configurations.

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研究了材料组成和设计参数对9.5µm空芯光纤光损耗的影响

本研究通过系统地改变几何因素，探讨了一种新的中空芯金属纤维HCMF设计。研究了金、银、铝、石墨烯和氮化硅（Si3N4）等各种材料作为传统金属组件的替代品，以评估它们在9.5 μ m波长下对光纤性能的影响。利用Lumerical Ansys 2023和时域有限差分方法研究了每种材料的光损耗。结果表明，Si₃N₄具有优异的光学特性，在特定波长下光学损耗接近于零，可以忽略不计，适合于低衰减应用；选用Si₃N₄作为空心光纤中金属丝的材料，随后对金属丝的几何形状进行修改，如线宽和线芯间距，提高了光纤的性能，实现了最小的光约束损耗，最小值为10−18 dB/m。这说明了Si₃N₄作为一种高效空心纤维结构的特殊材料的能力。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.