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对光纤CO2气体的传感机理进行了理论分析和实验研究．结果表明：光纤传感的灵敏度与扰动有一定的线性关系，利用光纤扰动技术产生光纤内部的能量流动，可实现光纤CO2气体传感．
The sensing mechanism of fiber CO2 gas is theoretically analyzed and experimentally studied. The results show that the sensitivities and perturbations of optical fiber sensing have a certain linear relationship, and the optical fiber perturbation technology can generate the energy flow inside the optical fiber to realize the fiber CO2 gas sensing.