一种新型光纤府蚀传感器

A New Type of Fiber Optic Corrosion Sensor

报道了一种用电化学方法制备的光纤腐蚀传感器（ＦＯＣＳ），通过光纤纤芯上电镀的Ｆｅ－Ｃ合金膜传递腐蚀信息，实现腐蚀监测．初步实验结果表明，当Ｆｅ－Ｃ合金膜发生腐蚀时，光纤输出的光功率增加 ３ ５％，且钝化的 Ｆｅ－Ｃ合金膜发生腐蚀时，传感器响应时间比未钝化的膜延长三倍，与金属钝化理论分析结果一致。

This paper reports the research and development of a Fiber Optic Corrosion Sensor (FOCS) fabricated by electroplating a Fe--C alloy film onto an optical fiber core within the sensing region. The initial results show that the sensor output power increases by about 35% when the film is corroded with the sensor of the film passivated, and that the time taken to rise to maximum output power is prolonged by almost 3 times, compared with that for non-passivated film. This is in accord with the result of a theoretical analysis for metal passivation process.