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

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2020,（6）
• 所属期刊栏目: Devices
• 页码范围: 428-432
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11801-020-9215-x

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 prn/％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.