Results 121 to 130 of about 7,750 (233)

Fiber-Optic Bragg Grating Sensor for Photothermally Examinating Moisture of Meat

Photonic Sensors
The illegal water injection into meat not only breaks the market equity, but also deteriorates the meat quality and produces harmful substances. In this work, we proposed a fiber Bragg grating (FBG) sensor that enabled fast, quantitative, and in-situ ...
Xiaodong Xie, Enlai Song, Ziyu Yuan, Yi Yin, Yongkang Zhang, Qiaochu Yang, Zhiyuan Xu, Yang Ran   +7 more
doaj   +1 more source

Development of a pore pressure sensor employing fibre Bragg gratings [PDF]

, 2008
Monitoring pore pressure is important to understand and predict the mechanical behaviour of soil, helping engineers to assess the stability of slopes and built infrastructures.
Gonçalves Correia, Ricardo Nuno
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Femtosecond Laser Inscribed Multiwavelength Cascaded FBG Array Using Point-By-Point Method for Temperature Sensing Based on Swept Laser Demodulation Technique

International Journal of Optics
A femtosecond laser inscribed quintuple-wavelength cascaded fiber Bragg grating (FBG) array for temperature sensing system based on swept laser source was proposed and experimentally demonstrated.
Jia Liu, Bai Zhang, Yiwei Liu
doaj   +1 more source

Numerical Calculations of Fiber Bragg Gratings with Intensity-Dependent Refractive Index

Photonics
Modified discrete transfer matrix and transmission line models were applied to nonlinear refractive index fiber Bragg gratings (FBG). The methods were validated against analytical solutions for Kerr-type uniform FBG, evaluating accuracy, convergence, and
Christos Lazakis, Nikolaos A. Stathopoulos   +1 more
doaj   +1 more source

Fiber Bragg grating pressure sensor with enhanced sensitivity [PDF]

, 2007
A novel fiber Bragg grating (FBG) pressure sensor with the enhanced sensitivity has been demonstrated. A piston-like diaphragm with a hard core in the center is used to enhance the sensitivity.
Zhang, WT, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China. 电子邮箱地址: zwt800208@163.com, Liu, LH, Liu, YL, Zhang, WT, Li, F   +4 more
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Fiber Bragg grating hydrophone with high sensitivity [PDF]

, 2008
A fiber Bragg grating (FBG) hydrophone with high sensitivity was demonstrated. This hydrophone used a rubber diaphragm and a copper hard core as the sensing element.
Liu, YL, Zhang, WT, Li, F, Zhang, WT, Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China. 电子邮箱地址: zhangwt@semi.ac.cn   +3 more
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Communication Solution for Monitoring Vehicle Chassis Deformation

Transport and Telecommunication
Fiber Bragg Grating (FBG) strain sensors represent a cutting-edge technology in the field of optical sensing, providing precise measurements of strain, temperature, and other physical parameters in various environments.
Boyukov Toncho Ivanov
doaj   +1 more source

MEMBRANE-BASED FIBER BRAGG GRATING PRESSURE SENSOR WITH HIGH SENSITIVITY [PDF]

, 2009
A fiber Bragg grating (FBG) pressure sensor packaged by using a hard core in the membrane is presented. By utilizing the unique membrane-based FBG packagine method, its pressure sensitivity has been effectively enhanced.
Li YQ, Liu YL, Li F, Liu LH, He YT, Liu LH Beijing Inst Technol Dept Opt Elect Engn Sch Informat Sci & Technol Beijing 100081 Peoples R China. E-mail Address: liulihui@bit.edu.cn   +5 more
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Temperature and vector bending sensing with a supermode fiber Bragg grating

JPhys Photonics
Due to their multiple advantages, single-mode fiber Bragg gratings (FBGs) are widely used in a myriad of practical sensing applications. However, their concurrent sensitivity to strain and temperature makes a reference sensor necessary in several ...
J Villatoro, M Alonso-Murias, D Maldonado-Hurtado, A Zornoza, F Lindner, J Bierlich, S Sales, K Wondraczek   +7 more
doaj   +1 more source

Fiber Bragg Gratings Strain Sensors for Railway Applications [PDF]

, 2009
Fiber optical sensors have played an important role in applications for monitoring the health of civil infrastructures, such as bridges, oil rigs, and railroads.
Ou, Wendy
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