Tapered optical fiber temperature sensor and sensing probe manufacture method thereof

The present invention relates to a tapered optical fiber temperature sensor and a sensing probe production method thereof. The temperature sensor comprises a tapered optical fiber temperature sensing probe. An input terminal of the tapered optical fiber temperature sensing probe is connected with a light source. An output terminal of the tapered optical fiber temperature sensing probe is connected to a signal processing unit through an optical detector. When a cone zone ambient temperature of the tapered optical fiber temperature sensing probe changes, a cone zone evanescent field changes correspondingly, so that an optical power outputted by the tapered optical fiber temperature sensing probe is changed. The optical detector converts an optical signal outputted by the tapered optical fiber temperature sensing probe into an electric signal and sends the electric signal to the signal processing unit, and temperature information is obtained through voltage conversion. The sensor and the method have the advantages of simple structure and high sensitivity, the sensing probe is easy to manufacture and low in cost, and is suitable for diverse industrial, agricultural, scientific research occasions of oil depot tank group temperature monitoring, power system temperature monitoring, mine tunnel fire monitoring, greenhouse granary temperature monitoring, building structure health monitoring and the like.