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 elucid...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.展开更多
基金financially supported by the National Natural Science Foundation of China(62475201)the Fundamental Research Funds for the Central Universities(104972024JYS0045)。
文摘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.
