摘要：【中文】本发明公开了光纤耦合污染物传感器及污染物浓度测量方法，涉及污染物检测领域，光纤耦合污染物传感器包括两根光纤，光纤的中部耦合为锥腰耦合区，锥腰耦合区的包层覆盖有气敏材料，锥腰耦合区的光纤设置有光栅；方法包括S1传感器吸附污染物S2采集传感器透射光谱S3根据透射光谱确定传感器吸附后的折射率S4确定吸附后折射率与污染物浓度关系S5根据吸附后折射率与污染物浓度关系得到检测区污染物浓度；传感器具有传感灵敏度高、结构简单、成本低廉、体积小、重量轻、易于集成等优点；通过对透射光谱进分析得到吸附后折射率与透射光谱关系，吸附后折射率与污染物浓度关系，最终得到未知污染物浓度检测区的污染物浓度，从而实现对污染物浓度的监测。 【EN】The invention discloses an optical fiber coupling pollutant sensor and a pollutant concentration measuring method, and relates to the field of pollutant detection, wherein the optical fiber coupling pollutant sensor comprises two optical fibers, the middle part of each optical fiber is coupled into a conical waist coupling area, the cladding of the conical waist coupling area is covered with a gas-sensitive material, and the optical fiber of the conical waist coupling area is provided with a grating; the method comprises the steps that S1 the sensor adsorbs pollutants S2, the transmission spectrum S3 of the sensor is collected, the refractive index S4 after the sensor adsorbs is determined according to the transmission spectrum, the relation between the refractive index after adsorption and the pollutant concentration S5 is determined, and the pollutant concentration in the detection area is obtained according to the relation between the refractive index after adsorption and the pollutant concentration; the sensor has the advantages of high sensing sensitivity, simple structure, low cost, small volume, light weight, easy integration and the like; the relation between the refractive index after adsorption and the transmission spectrum is obtained by analyzing the transmission spectrum, and the relation between the refractive index after adsorption and the pollutant concentration is finally obtained, so that the pollutant concentration in an unknown pollutant concentration detection area is finally obtained, and the monitoring on the pollutant concentration is realized.