Year: 2025
Type: article
Abstract: Hollow-core anti-resonant fibers (HC-ARFs) have emerged as a transformative platform for high-performance gas sensing. This review systematically summarizes recent advances in HC-ARF-based gas sensors. It begins by elucidating the light-guiding principles of HC-ARFs. Subsequently, key strategies for enhancing sensor performance are discussed, encompassing structural optimization of the fiber, selection of mid-infrared substrate materials, femtosecond laser fabrication of microchannels to accelerate gas diffusion, and surface modification with functional materials for improved selectivity. The core of the review analyzes representative sensing techniques integrated with HC-ARFs, including direct absorption spectroscopy (DAS) and its highly sensitive derivatives—photothermal and photoacoustic spectroscopy—as well as multiplexed Raman spectroscopy. Finally, current challenges and future prospects are outlined, highlighting the potential of HC-ARF sensors to achieve ultra-sensitive, rapid, and compact gas detection for various applications.
Source: National Science Open
DOI: 10.1360/nso/20250049
Authors: Jing Cheng, Hao Wang, Lei Zhang, Yonggang Huang, Peng Jiao, Haitao Guo, Yantao Xu, Yinsheng Xu, Xianghua Zhang
Institutions: Wuhan University of Technology, State Key Laboratory of Silicate Materials for Architecture, Yangtze Optical Fibre and Cable Joint Stock Limited Company (China), China Building Materials Academy, Chinese Academy of Sciences, Xi'an Institute of Optics and Precision Mechanics, State Key Laboratory of Transient Optics and Photonics
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Award: G3185520208
OpenAlex ID: W4415899871