All-fiber temperature sensor based on graphene

作者：Liao Guozhen; Zhang Jun; Cai Xiang; Tan Shaozao; Tang Jieyuan; Xiao Yi; Chen Zhe; Yu Jianhui^*; Pang Qichang

来源：Acta Optica Sinica, 2013, 33(7).

DOI：10.3788/AOS201333.0706004

• Linear correlation
• Optical fiber sensing
• Propagation mode
• Reduced graphene oxides
• Reduced graphene oxides (RGO)
• Side-polished fiber
• Temperature changes
• Temperature-sensitive materials

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°C to 77°C, 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/°C and 0.03°C, respectively. The linear correlation of the sensor between temperature and transmission optical power is 99.4% and response rate is at least 0.0228°C/s.

• 出版日期2013-7
• 单位暨南大学