We propose a temperature sensor based on the graphene-oxide-coated micro-nano-fiber Mach–Zehnder (MZ) interference structure. In the design of the sensor, we use a single-mode fiber and multimode welded micro-nano fiber as a substrate to deposit graphene oxide (GO) by natural deposition. We cover the surface of the micro-nano fiber by a temperature-sensitive material in order to increase the temperature sensitivity of the sensor. We design a temperature sensing experimental system. The experimental results show that the temperature change can significantly change the GO influence on the transmitted light field, so that the light signal passing through the sensor is red-shifted. When the temperature increases from 25°C to 75°C, the output interference signal has a drift of 1.15 nm, and the temperature sensitivity of the sensor is 23.7 pm/°C.

我们提出了一种基于石墨烯氧化物涂层的微纳米纤维马赫曾德尔（MZ）干涉结构的温度传感器。在传感器的设计中，我们使用单模光纤和多模焊接微纳米光纤作为基底，通过自然沉积来沉积氧化石墨烯（GO）。我们用热敏材料覆盖微纳米纤维的表面，以提高传感器的温度敏感性。我们设计了一个温度传感实验系统。实验结果表明，温度变化会显着改变GO对透射光场的影响，从而使通过传感器的光信号发生红移。当温度从25°C升高到75°C时，输出干扰信号的漂移为1.15 nm，传感器的温度灵敏度为23.7 pm /°C。