scholarly journals A Miniature Fiber Tip Polystyrene Microsphere Temperature Sensor With High Sensitivity

2021 ◽  
Author(s):  
Haibin Chen ◽  
Tianchong Xie ◽  
Jiashuang Feng ◽  
Xiongxing Zhang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Wavelength Shift ◽  
Polystyrene Microsphere ◽  
Broadband Light Source ◽  
Sensor Structure ◽  
Fabry Perot ◽  
Spherical Diameter ◽  
Measurement Experiment

AbstractA fiber-optic temperature sensor based on fiber tip polystyrene microsphere is proposed. The sensor structure can be formed simply by placing and fixing a polystyrene microsphere on the center of an optical fiber tip. Since polystyrene has a much larger thermal expansivity, the structure can be used for high-sensitive temperature measurement. By the illuminating of the sensor with a broadband light source and through the optical Fabry-Perot interference between the front and back surfaces of the polystyrene microsphere, the optical phase difference (OPD) or wavelength shift can be used for the extraction of temperature. Temperature measurement experiment shows that, using a fiber probe polystyrene microsphere temperature sensor with a spherical diameter of about 91.7 µm, a high OPD-temperature sensitivity of about −0.617 96 nm/°C and a good linearity of 0.991 6 were achieved in a temperature range of 20°C–70°C.

A temperature sensor based on flexible substrate with ultra-high sensitivity for low temperature measurement

2020 ◽  
Vol 315 ◽  
pp. 112341
Author(s):  
Zhaojun Liu ◽  
Bian Tian ◽  
Xu Fan ◽  
Jiangjiang Liu ◽  
Zhongkai Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Measurement ◽  
Temperature Sensor ◽  
Flexible Substrate ◽  
High Sensitivity

scholarly journals Multifunctional Textile Platform for Fiber Optic Wearable Temperature-Monitoring Application

Micromachines ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 866 ◽  
Author(s):  
Ziyang Xiang ◽  
Liuwei Wan ◽  
Zidan Gong ◽  
Zhuxin Zhou ◽  
Zhengyi Ma ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Wavelength Shift ◽  
Heat Sources ◽  
Time Dynamic ◽  
Textile Sensor ◽  
Fbg Sensors ◽  
Comfort Parameters ◽  
Monitoring Application

Wearable sensing technologies have been developed rapidly in the last decades for physiological and biomechanical signal monitoring. Much attention has been paid to functions of wearable applications, but comfort parameters have been overlooked. This research presents a developed fabric temperature sensor by adopting fiber Bragg grating (FBG) sensors and processing via a textile platform. This FBG-based quasi-distributed sensing system demonstrated a sensitivity of 10.61 ± 0.08 pm/°C with high stability in various temperature environments. No obvious wavelength shift occurred under the curvatures varying from 0 to 50.48 m−1 and in different integration methods with textiles. The temperature distribution monitored by the developed textile sensor in a complex environment with multiple heat sources was deduced using MATLAB to present a real-time dynamic temperature distribution in the wearing environment. This novel fabric temperature sensor shows high sensitivity, stability, and usability with comfort textile properties that are of great potential in wearable applications.

High-Sensitivity Fiber-Optic Fabry–Perot Interferometer Temperature Sensor

2012 ◽  
Vol 51 ◽  
pp. 06FL10 ◽  
Author(s):  
Xuefeng Li ◽  
Shuo Lin ◽  
Jinxing Liang ◽  
Hiroshi Oigawa ◽  
Toshitsugu Ueda
Keyword(s):  
Temperature Sensor ◽  
Fiber Optic ◽  
High Sensitivity ◽  
Fabry Perot

High-Sensitivity Fiber-Optic Fabry–Perot Interferometer Temperature Sensor

2012 ◽  
Vol 51 (6S) ◽  
pp. 06FL10 ◽  
Author(s):  
Xuefeng Li ◽  
Shuo Lin ◽  
Jinxing Liang ◽  
Hiroshi Oigawa ◽  
Toshitsugu Ueda
Keyword(s):  
Temperature Sensor ◽  
Fiber Optic ◽  
High Sensitivity ◽  
Fabry Perot

scholarly journals Design and Simulation of Temperature Sensor based on Long Period Grating in Liquid Filled Photonic Crystal Fiber

2018 ◽  
Vol 7 (3) ◽  
pp. 11-16
Author(s):  
R. Boufenar ◽  
M. Bouamar ◽  
A. Hocini
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Resonant Wavelength ◽  
Wavelength Shift ◽  
Long Period Grating ◽  
Crystal Fiber ◽  
Long Period ◽  
Vector Finite Element

In this paper, a high sensitivity temperature sensor based on photonic crystal fiber long period grating (PCF-LPG) filled with ethanol is proposed and simulated by full vector finite element method. The relationship between the resonant wavelength shift, and the temperature was analyzed. The results show that the resonant wavelength of the ethanol filled photonic crystal fiber long period grating is proportional linearly with temperature and the highest  sensitivity of  was achieved, which is 90 times higher than that of conventional LPG temperature sensors.

High-sensitivity temperature sensor based on single-mode fiber for temperature-measurement application in the ocean

2018 ◽  
Vol 57 (10) ◽  
pp. 1
Author(s):  
Jun-kai Qian ◽  
Ri-qing Lv ◽  
Shu-na Wang ◽  
Yong Zhao ◽  
Qiang Zhao
Keyword(s):  
Temperature Measurement ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber

High-sensitivity Fabry–Perot interferometer temperature sensor probe based on liquid crystal and the Vernier effect

2018 ◽  
Vol 43 (21) ◽  
pp. 5355 ◽  
Author(s):  
Feiru Wang ◽  
Yongjun Liu ◽  
Yuelan Lu ◽  
Lingli Zhang ◽  
Ji Ma ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Fabry Perot ◽  
Vernier Effect ◽  
Sensor Probe

scholarly journals An IFPI Temperature Sensor Fabricated in an Unstriped Optical Fiber with Self-Strain-Compensation Function

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Yang Song ◽  
Liwei Hua ◽  
Jincheng Lei ◽  
Qi Zhang ◽  
Jie Liu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Temperature Sensor ◽  
Reflection Spectrum ◽  
Laser System ◽  
Sensory Information ◽  
Sensor Structure ◽  
Fabry Perot ◽  
Strain Compensation ◽  
Fs Laser ◽  
Compensation Function

This paper describes an intrinsic Fabry-Perot interferometer (IFPI) temperature sensor with self-strain-compensation function. The sensor was fabricated on a buffer-intact optical fiber using a femtosecond (fs) laser system. The use of fs laser allows the sensor to be fabricated in an optical fiber without the necessity of removing the polymer buffer coating, thus not compromising its mechanical property. The sensor is composed of two cascaded IFPIs in different cavity length of 100 μm and 500 μm, respectively. The shorter IFPI serves as the temperature sensor, while the second IFPI serves as a compensation sensor, which is used to decouple the strain from the raw signal collected by the shorter FPI. The reflection spectrum of sensor, containing both sensory information and compensation information, is collected in wavelength domain and demultiplexed in the Fourier domain of reflection spectrum. An algorithm was developed and successfully implemented to compensate the strain influence on the proposed temperature sensor. The results showed that the proposed sensor structure holds a constant temperature sensitivity of 11.33 pm/°C when strained differently.

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