Results 1 to 10 of about 167 (163)
Distributed optical fiber pressure sensors
Optical Fiber Technology, 2020 The measurement of pressure by using distributed optical fiber sensors has represented a challenge for many years. While single-point optical fiber pressure sensors have reached a solid level of technology maturity, showing to be very good candidates in replacing conventional electrical sensors due to their numerous advantages, distributed sensors are ...
Schenato L. +3 more
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Distributed polymer optical fiber sensors: a review and outlook
Photonics Research, 2021 Aging degradation and seismic damage of civil infrastructures have become a serious issue for society, and one promising technology for monitoring their conditions is optical fiber sensing. Glass optical fibers have been predominantly used for the past several decades to develop fiber sensors, but currently polymer or plastic optical fibers (POFs) have
Yosuke Mizuno +5 more
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Distributed Optical Fiber Sensor Applications in Geotechnical Monitoring [PDF]
Sensors, 2021 We report the experimental application of distributed optical fiber sensors, based on stimulated Brillouin scattering (SBS), to the monitoring of a small-scale granular slope reconstituted in an instrumented flume and subjected to artificial rainfall until failure, and to the monitoring of a volcanic rock slope. The experiments demonstrate the sensors’
Minardo A. +7 more
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Distributed fiber optic radiation sensors [PDF]
Safety of Nuclear Waste Disposal, 2021 Abstract. The international research efforts focused on the development of radiation sensors based on optic fibers have their origins in the 1970s (Evans et al., 1978). Generally, the lightweight fiber optic sensors are immune to electromagnetic field interference and high voltages making them deployable in harsh environments at hard to reach areas ...
Wosniok, Aleksander, Krebber, Katerina
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Recent Progress in Distributed Fiber Optic Sensors [PDF]
Sensors, 2012 Rayleigh, Brillouin and Raman scatterings in fibers result from the interaction of photons with local material characteristic features like density, temperature and strain. For example an acoustic/mechanical wave generates a dynamic density variation; such a variation may be affected by local temperature, strain, vibration and birefringence.
Xiaoyi Bao, Liang Chen
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Distributed Fiber-Optic Sensors for Vibration Detection [PDF]
Sensors, 2016 Distributed fiber-optic vibration sensors receive extensive investigation and play a significant role in the sensor panorama. Optical parameters such as light intensity, phase, polarization state, or light frequency will change when external vibration is applied on the sensing fiber.
Xin Liu 0033 +5 more
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A novel distributed fiber optic strain sensor
IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188), 2002 Peer ...
García Hernández, Miguel J. +4 more
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Distributed optical fiber sensors [PDF]
SPIE Proceedings, 1993 This review paper covers the field of distributed optical fiber sensors, where measurements may be taken along the length of a continuous section of optical fiber. Such a feature greatly increases the information that can be obtained from a single instrument and hence the cost per sensing point can be more acceptable.
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Optical Fiber Sensor with Distributed Parameters Based on Optical Fiber Reflectometry
Advances in Electrical and Electronic Engineering, 2011 His paper deals with the two-stage two-phase electronic systems with orthogonal output voltages and currents - DC/AC/AC. Design of two-stage DC/AC/AC high frequency converter with two-phase orthogonal output using single-phase matrix converter is also introduced. Output voltages of them are strongly nonharmonic ones, so they must be pulse-modulated due
Korenko, Branislav +3 more
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Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide [PDF]
Remote Sensing, 2018 This work reports on the application of a distributed fiber-optic strain sensor for long-term monitoring of a railway tunnel affected by an active earthflow. The sensor has been applied to detect the strain distribution along an optical fiber attached along the two walls of the tunnel.
Minardo, Aldo +10 more
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