A novel distributed fiber-optic strain sensor

The theory of operation of a fiber-optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to monitor structures of more than 1 km of length. A quasi-distributed sensor struc...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2002-08, Vol.51 (4), p.685-690
Main Authors: Garcia, M.J., Ortega, J.A., Chavez, J.A., Salazar, J., Turo, A.
Format: Article
Language:English
Subjects:
Capacitive sensors
Condition monitoring
Design engineering
Elongation
Enginyeria de la telecomunicació
Fiber optics
Fibra òptica
Fibre optic sensors
Fibres òptiques
Inspection
Mechanical sensors
Monitors
Optical fiber sensors
Optical fiber theory
Optical fibers
Optical noise
Optical sensors
Reflectors
Sensor systems
Sensors
Strain
Strain measurement
Strain sensors
Telecomunicació òptica
Àrees temàtiques de la UPC
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Description
Summary:The theory of operation of a fiber-optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to monitor structures of more than 1 km of length. A quasi-distributed sensor structure accomplishes the best condition monitoring, where each section of the sensor integrates the measured magnitude, obtaining a value associated to the average shortening or elongation in this section. Tools for the design of the optical reflectors of the sensor are also provided, including a study of the optical noise due to multireflection within the system.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2002.803090