光纤气体传感检测技术研究

光谱吸收型光纤气体传感器可以实现对气体的准确、快速、高灵敏度的检测，结合原理和典型系统综述了五种检测方法，其中单波长光谱吸收检测、差分检测、谐波检测技术发展得比较成熟，并且开始应用在石油化工等领域，而光腔衰荡光谱技术（CRDS）和有源腔气体检测技术是近几年刚兴起的新技术，具有实际吸收光程长，检测精度不受光源强度及其变化影响的特性,是很有发展潜力的光谱吸收检测技术。

Research on optical fiber gas sensor detection technology

Fiber-optic gas sensor based on absorption spectra can be achieved on the gas detection accurately,rapidly and highly sensitively.Combined with detection principle and typical system,five optical fiber gas sensing detection methods are summarized in the paper.Single-wave absorption spectrometry detection,differential detection and harmonic detection are develop well,and come to be applied in the oil and chemical industry.The cavity ring-down spectroscopy (CRDS) and active gas cavity detection technology,which is just the rise of novel technology in recent years and has the characteristic that it has a long absorption optical path length and its measure accuracy is independent on the intensity of source,has a great potential for development.