摘要
With micro-and nano-structured optical fibers,parts-per-million to parts-per-trillion level gas detection has been demonstrated for a range of gases such as methane,acetylene,ethane,carbon monoxide,hydrogen,and oxygen.We review the recent development in optical fiber gas cells and gas detection systems based on direct absorption,photothermal,photoacoustic,and stimulated Raman spectroscopies.
基金
the support of NSF of China(Grant No.61827820)
Hong Kong SAR Government GRF Grant(Grant No.PolyU 152603/16E)
the Local Innovative and Research Teams Project of Guangdong Pear River Talents Program(Grant No.2019BT02X105)
the Hong Kong Polytechnic University(Grant Nos.P0034330 and 1-9B65).
