scholarly journals Fabry-Pérot Fiber-Optic Sensors for Physical Parameters Measurement in Challenging Conditions

2009 ◽  
Vol 2009 ◽  
pp. 1-9 ◽  
Author(s):  
Éric Pinet
Keyword(s):  
Optical Fiber ◽  
Low Cost ◽  
Optical Fiber Sensors ◽  
Physical Parameters ◽  
Fiber Sensors ◽  
Distinctive Features ◽  
Operating Modes ◽  
Sensing Technology ◽  
Fabry Perot ◽  
Parameters Measurement

Optical fiber sensors have unique advantages and distinctive features that make them very attractive for many applications especially those involving challenging conditions where other traditional electrical sensors usually fail. Among the commercially available optical fiber sensors, the Fabry-Pérot sensing technology is probably the most versatile and the most interesting one since a relatively low-cost universal signal conditioner could easily read compatible Fabry Pérot sensors measuring different physical parameters such as strain, temperature, pressure, displacement, or refractive index. This papers details the numerous advantages of this optical sensing technology and also summarizes the operating modes of commercially available signal conditioners and sensors.

scholarly journals Vibration Detection Using Optical Fiber Sensors

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Yoany Rodríguez García ◽  
Jesús M. Corres ◽  
Javier Goicoechea
Keyword(s):  
Optical Fiber ◽  
Electromagnetic Interference ◽  
Optical Fiber Sensors ◽  
Negative Influence ◽  
Physical Parameters ◽  
Real Problem ◽  
Noisy Environments ◽  
Fiber Sensors ◽  
Fabry Perot ◽  
Electromechanical Equipment

Condition monitoring of heavy electromechanical equipment is commonly accomplished in the industry using vibration analysis. Several techniques, mainly based on capacitive and piezoelectric accelerometers, have been applied for predictive maintenance. However, the negative influence of the electromagnetic interference (EMI) can be a real problem when electrical signals are used to detect and transmit physical parameters in noisy environments such as electric power generator plants with high levels of EMI. Optical fiber sensors are increasingly used because of the nonelectrical nature of signals. In this paper, the most frequently used vibration optical fiber sensors will be reviewed, classifying them by the sensing techniques and measurement principles. The main techniques, intensity modulation, fiber bragg gratings and Fabry-Pérot Interferometry, will be reviewed here.

Optical fiber sensors based on Fabry-Perot multilayer coatings

2010 ◽  
Vol 8 (S1) ◽  
pp. 189-191 ◽  
Author(s):  
杨明红 Minghong Yang ◽  
孙艳 Yan Sun ◽  
李小兵 Xiaobin Li ◽  
姜德生 Desheng Jiang
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Multilayer Coatings ◽  
Fiber Sensors ◽  
Fabry Perot

scholarly journals Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2046 ◽  
Author(s):  
Stephanie Hui Kit Yap ◽  
Kok Ken Chan ◽  
Swee Chuan Tjin ◽  
Ken-Tye Yong
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
High Sensitivity ◽  
Optical Fiber Sensors ◽  
Functional Coating ◽  
Fiber Sensors ◽  
Carbon Allotrope ◽  
Carbon Allotropes ◽  
Sensing Technology ◽  
Wide Range

Recently, carbon allotropes have received tremendous research interest and paved a new avenue for optical fiber sensing technology. Carbon allotropes exhibit unique sensing properties such as large surface to volume ratios, biocompatibility, and they can serve as molecule enrichers. Meanwhile, optical fibers possess a high degree of surface modification versatility that enables the incorporation of carbon allotropes as the functional coating for a wide range of detection tasks. Moreover, the combination of carbon allotropes and optical fibers also yields high sensitivity and specificity to monitor target molecules in the vicinity of the nanocoating surface. In this review, the development of carbon allotropes-based optical fiber sensors is studied. The first section provides an overview of four different types of carbon allotropes, including carbon nanotubes, carbon dots, graphene, and nanodiamonds. The second section discusses the synthesis approaches used to prepare these carbon allotropes, followed by some deposition techniques to functionalize the surface of the optical fiber, and the associated sensing mechanisms. Numerous applications that have benefitted from carbon allotrope-based optical fiber sensors such as temperature, strain, volatile organic compounds and biosensing applications are reviewed and summarized. Finally, a concluding section highlighting the technological deficiencies, challenges, and suggestions to overcome them is presented.

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