Mid-Infrared Low-Loss Large-NA GRIN Fiber via Periodic-layered Chalcogenide Glasses

IF 4.8 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Lightwave Technology Pub Date : 2025-08-20 DOI:10.1109/JLT.2025.3600909

Jie Feng;Yu Wu;Ruoqi Yang;Rujian Gao;Wei Tang;Kai Jiao;Rongping Wang;Xunsi Wang

引用次数: 0

Abstract

Given the limitations of traditional methods in fabricating mid-infrared gradient-refractive-index (GRIN) fibers with large numerical apertures (NA) at the micrometer scale, this paper proposes a sub-wavelength multilayer periodic structure (MPS) (<λ/n) to achieve the desired GRIN distribution. The proposed fiber structure is designed based on Maxwell-Garnett's effective medium theory (EMT) and fabricated using an innovative isolation-extrusion technique. These fibers not only exhibit a large numerical aperture (NA = 1.448), but also enable the precise control of refractive index gradient profiles. Furthermore, this study explores the intrinsic relationship between the gradient refractive index distribution and the optical field transmission characteristics in the mid-infrared range.

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基于周期性层状硫族玻璃的中红外低损耗大na GRIN光纤

针对传统方法在微米尺度上制造大数值孔径（NA）中红外梯度折射率（GRIN）光纤的局限性，本文提出了一种亚波长多层周期结构（MPS）（<λ/n）来实现理想的GRIN分布。所提出的纤维结构是基于麦克斯韦-加内特有效介质理论（EMT）设计的，并采用一种创新的隔离挤压技术制造。这些光纤不仅具有较大的数值孔径（NA = 1.448），而且能够精确控制折射率梯度分布。此外，本研究还探讨了中红外梯度折射率分布与光场透射特性之间的内在关系。

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 Lightwave Technology 工程技术-工程：电子与电气

CiteScore

9.40

自引率

14.90%

发文量

936

审稿时长

3.9 months

期刊介绍： The Journal of Lightwave Technology is comprised of original contributions, both regular papers and letters, covering work in all aspects of optical guided-wave science, technology, and engineering. Manuscripts are solicited which report original theoretical and/or experimental results which advance the technological base of guided-wave technology. Tutorial and review papers are by invitation only. Topics of interest include the following: fiber and cable technologies, active and passive guided-wave componentry (light sources, detectors, repeaters, switches, fiber sensors, etc.); integrated optics and optoelectronics; and systems, subsystems, new applications and unique field trials. System oriented manuscripts should be concerned with systems which perform a function not previously available, out-perform previously established systems, or represent enhancements in the state of the art in general.