Humidity and temperature sensor based on GOQDs-PVA coated tapered no-core fiber combined with FBG  

作　　者：CHENG Qi-hang ZHANG Ai-ling PAN Hong-gang LI Wen SUN Ce 程启航;张爱玲;潘洪刚;李雯;孙策(Tianjin Key Laboratory of Film Electronic and Communication Devices,Engineering Research Center of Communication Devices and Technology,Ministry of Education,School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]Tianjin Key Laboratory of Film Electronic and Communication Devices,Engineering Research Center of Communication Devices and Technology,Ministry of Education,School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China

出　　处：《Optoelectronics Letters》2020年第6期428-432,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.61377075);the Training Program for Leading Talents of Universities in Tianjin。

摘　　要：A simple structure optical fiber sensor for relative humidity(RH) and temperature measurement is proposed and verified in this paper, which is based on graphene oxide quantum dots and polyvinyl alcohol(GOQDs-PVA) composite coated tapered no-core fiber(NCF) combined with a fiber Bragg grating(FBG). FBG is insensitive to humidity and sensitive to temperature, which is used to compensate temperature of the sensor. Experimental results show this sensor has humidity sensitivity of 143.27 pm/%RH ranging from 30%RH to 80%RH and the temperature sensitivity of 9.21 pm/℃. The proposed sensor has advantages of simple structure, good repeatability, and good stability, which is expected to be used in both RH and temperature measurement in biological and chemical fields.

关 键 词：NCF red Humidity and temperature sensor based on GOQDs-PVA coated tapered no-core fiber combined with FBG PVA 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]