Single‐Step Tabletop Fabrication for Low‐Attenuation Terahertz Special Optical Fibers

Advanced Photonics Research

Fetah Benabid¹  Jonas H. Osório¹  Cristiano M. B. Cordeiro²  Heike Ebendorff-Heidepriem²  Alex Dinovitser³  Brian W-H. Ng³  Derek Abbott³  Jakeya Sultana³  Md. Saiful Islam³ 

[1] GPPMM group XLIM Institute CNRS UMR 7252 University of Limoges Limoges 87060 France;Institute of Photonics and Advanced Sensing University of Adelaide Adelaide SA 5005 Australia;School of Electrical & Electronic Engineering University of Adelaide Adelaide SA 5005 Australia;

关键词: gas sensors;    hollow core fibers;    low attenuation;    tabletop fabrications;    terahertz fibers;   

DOI  :  10.1002/adpr.202100165

来源: DOAJ

【 摘 要 】

Amid the search for efficient terahertz transmission and gas sensing, all‐polymer terahertz waveguides attract significant interest due to their compactness and capability for providing environmentally robust systems. The high loss within metals and dielectrics in the terahertz range makes it challenging to build a low loss, mechanically stable, and broadband terahertz waveguides. In this context, hollow waveguides made of Zeonex are promising for attaining low transmission loss in the terahertz range. Herein, a microstructured hollow hexagonal‐core fiber (HCF) is investigated, which exhibits low loss, near‐zero dispersion, wide operating bandwidth, and is suitable as a gas sensor. Notably, HCF fabrication is carried out by exploiting an efficient single‐step extrusion method—by a standard filament extruder and a puller; hence the production cost is low compared with conventional extrusion methods. This introduces a novel way of fabricating complex and low‐loss terahertz fibers. The experiments demonstrate that an HCF can achieve remarkably low attenuation and near‐zero flattened dispersion as compared with any other terahertz fibers. The resulting HCFs are easy to handle and have high thermal and chemical stability. These results bring significant advancements for terahertz fiber fabrication, low‐loss ultrafast short‐distance terahertz transmission, and sensing in the terahertz spectral domain.

【 授权许可】

Unknown