光纤氢气传感技术（特邀）

光纤氢气传感器采用光纤作为传光或者传感的介质，基于氢敏材料的相关理化特性实现氢气检测，具有本质安全、稳定性好、体积小、质量轻和易组网等优良特性，是目前氢气传感和光纤传感领域的研究热点。文中首先介绍了典型氢敏材料的作用机理及特点，然后依据氢敏材料的调制机理，综述了几类典型的光纤氢气传感技术及基于受激拉曼增益或色散的新型光纤氢气传感技术，最后从传感器关键工艺及环境适应性方面分析了目前光纤氢气传感器实用化需要解决的问题，并对未来的研究方向进行了展望。

Optical fiber hydrogen sensing technology (Invited)

Optical fiber hydrogen sensors uses optical fiber as the medium of light transmission or sensing, and realizes hydrogen detection based on the physical and chemical properties of hydrogen sensitive materials. It has excellent characteristics such as intrinsic safety, strong stability, small volume light weight and good reusability, which makes it become one of the research hotspots in the field of hydrogen sensing and optical fiber sensing. The action mechanism and characteristics of typical hydrogen sensitive materials were introduced. Several typical optical fiber hydrogen sensor technologies and new progress according to the modulation mechanism of hydrogen sensitive materials were reviewed, a new optical fiber hydrogen sensor technology based on stimulated Raman gain or dispersion was introduced, and finally the problems to be solved in the practical application of optical fiber hydrogen sensor from the aspects of the key technology and environmental adaptability were analyzed, as well as the future research direction was prospected.