High-sensitivity fiber-optic humidity sensor based on microfiber overlaid with niobium disulfide
- PDF / 2,319,767 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 40 Downloads / 174 Views
High-sensitivity fiber-optic humidity sensor based on microfiber overlaid with niobium disulfide Enze Zhang1, Dongqin Lu1, Shuo Zhang1, Xun Gui1, Heyuan Guan1,*, Zilong Zhang1, Yijin Lin1, Jingyuan Ming1, Jiyu Hong1,2, Jiangli Dong1,*, Xiaoli Wang1, Wentao Qiu1,2, Wenguo Zhu1, Jianhui Yu1, Huihui Lu1, and Zhe Chen1,2 1
Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China 2 Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, China
Received: 7 May 2020
ABSTRACT
Accepted: 30 July 2020
Humidity sensors by exploiting transition metal dichalcogenides have attracted enormous attention in various applications. Here, we demonstrate a high-sensitivity fiber-optic humidity sensor based on microfibers overlaid with niobium disulfide (NbS2). Our experimental results show that this type of humidity sensor has high sensitivity, and good repeatability and reversibility. In the RH range of 72–97%, a sensitivity of up to 1.05 dB/RH% and an excellent linearity correlation of 99.5% were achieved. The transmission spectrum of the humidity sensor indicates that this sensor has a wide wavelength detection range from 1530 to 1565 nm. We applied the sensor to monitor human breath with a fast response. We anticipate that the humidity sensor will be useful for the environmental monitoring, food production, and semiconductor industries.
Ó
Springer Science+Business
Media, LLC, part of Springer Nature 2020
Introduction Humidity sensors are essential in numerous applications, such as environmental monitoring, pharmaceutical manufacturing, food production, and the semiconductor industry [1, 2]. High sensitivity, wide detection range, and rapid response and recovery are important features for humidity sensors. Fiber-optic humidity sensors have many advantages such as
resistance to electromagnetic interference, compact size, remote operation, and high sensitivity. The fiber-optic structures and sensing materials are key factors for improving the performance of fiber-optic humidity sensors. Different fiber-optic structures have been exploited for fiber-optic sensors, and they include the microfiber (MF), side-polished fiber (SPF), no-core fiber (NCF), Mach–Zehnder interferometer, fiber grating, Fabry–Perot interferometer, and surface plasmon resonance or whispering gallery mode-
Handling Editor: Pedro Camargo. Enze Zhang and Dongqin Lu have contributed equally to this work.
Address correspondence to E-mail: [email protected]; [email protected]
https://doi.org/10.1007/s10853-020-05230-0
J Mater Sci
based sensor structures. Among the various fiberoptic structures, the MF has the advantages of simple fabrication, strong evanescent fields, low optical loss, outstanding mechanical flexibility, and configurability. The MF structure provides an enhanced evanescent field that enables strong and rapid interaction between the guided light and the surroundings. Different mate
Data Loading...
