scholarly journals Optical Fiber Fabry–Perot Humidity Sensor Filled with Polyvinyl Alcohol

2021 ◽  
Vol 33 (3) ◽  
pp. 1051
Author(s):  
Ning Wang ◽  
Haosheng Zhang ◽  
Xiaodan Yu ◽  
Xiaolei Yin ◽  
Yuhao Li ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Optical Fiber ◽  
Humidity Sensor ◽  
Fabry Perot

Optical Fiber Fabry-Perot Humidity Sensor by Graphene Quantum Dots

2020 ◽  
Vol 49 (9) ◽  
pp. 906003-906003
Author(s):  
王宁 Ning WANG ◽  
田文昊 Wen-hao TIAN ◽  
张昊生 Hao-sheng ZHANG ◽  
于晓丹 Xiao-dan YU ◽  
尹晓蕾 Xiao-lei YIN ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Fiber ◽  
Humidity Sensor ◽  
Graphene Quantum Dots ◽  
Fabry Perot

3D printed castle style Fabry-Perot microcavity on optical fiber tip as a highly sensitive humidity sensor

2021 ◽  
Vol 328 ◽  
pp. 128981
Author(s):  
Mao-qing Chen ◽  
Yong Zhao ◽  
He-ming Wei ◽  
Cheng-liang Zhu ◽  
Sridhar Krishnaswamy
Keyword(s):  
Optical Fiber ◽  
Humidity Sensor ◽  
Highly Sensitive ◽  
Fabry Perot ◽  
3D Printed

Optical fiber relative-humidity sensor with polyvinyl alcohol film

2004 ◽  
Vol 43 (21) ◽  
pp. 4127 ◽  
Author(s):  
Ainhoa Gastón ◽  
Fátima Pérez ◽  
Joaquín Sevilla
Keyword(s):  
Relative Humidity ◽  
Polyvinyl Alcohol ◽  
Optical Fiber ◽  
Humidity Sensor ◽  
Polyvinyl Alcohol Film ◽  
Relative Humidity Sensor

scholarly journals Miniature photonic crystal optical fiber humidity sensor based on polyvinyl alcohol

2012 ◽  
Author(s):  
Wei Chang Wong ◽  
Chi Chiu Chan ◽  
Tao Li ◽  
Li Han Chen ◽  
Jia Liang Boo ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polyvinyl Alcohol ◽  
Optical Fiber ◽  
Humidity Sensor

scholarly journals Highly Sensitive Surface Plasmon Resonance Humidity Sensor Based on a Polyvinyl-Alcohol-Coated Polymer Optical Fiber

Biosensors ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 461
Author(s):  
Ying Wang ◽  
Jingru Wang ◽  
Yu Shao ◽  
Changrui Liao ◽  
Yiping Wang
Keyword(s):  
Surface Plasmon Resonance ◽  
Polyvinyl Alcohol ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Humidity Sensor ◽  
Wavelength Shift ◽  
Polymer Optical Fiber ◽  
Human Breath ◽  
Highly Sensitive

A surface-plasmon-resonance-based fiber device is proposed for highly sensitive relative humidity (RH) sensing and human breath monitoring. The device is fabricated by using a polyvinyl alcohol (PVA) film and gold coating on the flat surface of a side-polished polymer optical fiber. The thickness and refractive index of the PVA coating are sensitive to environmental humidity, and thus the resonant wavelength of the proposed device exhibits a redshift as the RH increases. Experimental results demonstrate an average sensitivity of 4.98 nm/RH% across an ambient RH ranging from 40% to 90%. In particular, the sensor exhibits a linear response between 75% and 90% RH, with a sensitivity of 10.15 nm/RH%. The device is suitable for human breath tests and shows an average wavelength shift of up to 228.20 nm, which is 10 times larger than that of a silica-fiber-based humidity sensor. The corresponding response and recovery times are determined to be 0.44 s and 0.86 s, respectively. The proposed sensor has significant potential for a variety of practical applications, such as intensive care and human health analysis.

scholarly journals An Easily Fabricated High Performance Fabry-Perot Optical Fiber Humidity Sensor Filled with Graphene Quantum Dots

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 806
Author(s):  
Ning Wang ◽  
Wenhao Tian ◽  
Haosheng Zhang ◽  
Xiaodan Yu ◽  
Xiaolei Yin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Relative Humidity ◽  
Optical Fiber ◽  
Optical Fibers ◽  
High Performance ◽  
Humidity Sensor ◽  
Graphene Quantum Dots ◽  
High Sensitivity ◽  
Single Mode ◽  
Fabry Perot

An easily fabricated Fabry-Perot optical fiber humidity sensor with high performance was presented by filling Graphene Quantum Dots (GQDs) into the Fabry-Perot resonator, which consists of two common single mode optical fibers. The relative humidity sensing performance was experimentally investigated by an interference spectrum drift between 11 %RH to 85 %RH. 0.567 nm/%RH sensitivity and 0.99917 linear correlation were found in experiments that showed high sensitivity, good and wide-range linear responding. Meanwhile, its good responding repeatability was demonstrated by two circle tests with increasing and decreasing relative humidity. For investigating the measurement influence caused by a temperature jitter, the temperature responding was experimentally investigated, which showed its linear responding with 0.033 nm/°C sensitivity. The results demonstrate the humidity sensitivity is greatly higher than the temperature sensitivity. The wavelength shift influence is 0.0198 nm with 0.6 °C max temperature jitter in the experiment, which can be ignored in humidity experiments. The fast-dynamic responses at typical humidity were demonstrated in experiments, with 5.5 s responding time and 8.5 s recovering time. The sensors with different cavity lengths were also investigated for their humidity response. All sensors gave good linear responding and high sensitivity. In addition, the relation curve between cavity length and response sensitivity also had good linearity. The combination of GQDs and single mode optical fibers showed easy fabrication and good performance for an optical fiber relative humidity sensor.

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