【摘要】 研究了一种基于还原氧化石墨烯(rGO)的全光纤温度传感器。此传感器利用侧边抛磨光纤(SPF)作为基底,采用改进氧化-还原法得到的石墨烯作为敏感材料。通过自然蒸发沉积方法,将rGO沉积于SPF的抛磨区,使rGO与光纤光场发生相互作用。实验结果表明温度变化可明显改变rGO对传输光场的作用,使通过传感器的光功率发生显著的变化。当温度从-7.8℃到77℃变化时,通过传感器的光功率发生11.3dB的变化,光功率随温度变化的线性相关系数高达99.4%。测温精度可达0.03℃,灵敏度为0.134dB/℃,响应速度大于0.0228℃/s。更多还原

【Abstract】 An all-fiber temperature sensor based on reduced graphene oxide(rGO) is studied.Such a sensor consists of two key parts,including a section of side polished fiber(SPF) as a substrate and rGO film as temperature sensitive material which is deposited onto the SPF by spontaneous evaporation.Experimental results show that temperature change can affect the interaction between rGO film and propagation mode in SPF,and change the transmitting optical power through rGO-based SPF sensor.When temperature changes from-7.8 ℃ to 77 ℃,the transmitting optical power of the sensors spans over 11.3 dB.The sensitivity and temperature measurement accuracy of the rGO-based SPF sensor are measured to be 0.134 dB/℃ and 0.03 ℃,respectively.The linear correlation of the sensor between temperature and transmission optical power is 99.4% and response rate is at least 0.0228 ℃/s.更多还原