Results 41 to 50 of about 45,046 (304)

Advances in Tapered Optical Fiber Sensor Structures: From Conventional to Novel and Emerging

Biosensors, 2023
Optical fiber sensors based on tapered optical fiber (TOF) structure have attracted a considerable amount of attention from researchers due to the advantages of simple fabrication, high stability, and diverse structures, and have great potential for ...
Wen Zhang, Xianzheng Lang, Xuecheng Liu, Guoru Li, Ragini Singh, Bingyuan Zhang, Santosh Kumar   +6 more
doaj   +1 more source

The detection of ultrasound using fiber-optic sensors [PDF]

, 2007
Ultrasound is a valuable tool for the detection of damage in structures and the characterization of material properties. Its detection is conventionally done by piezoelectric transducers, however fiber-optic sensors can operate over a greater range of ...
Culshaw, B., Thursby, G., Betz, Daniel, Thursby, G.J., Betz, D., Brian Culshaw, Sorazu, B.L., Graham Thursby, Daniel Betz, Boja Sorazu, Sorazu, B., Thursby, Graham, Sorazu, Borja, Culshaw, Brian   +13 more
core   +1 more source

High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors [PDF]

, 2011
We report on the design and prototyping of a robust high-speed interferometric multiplexer and interrogator for fiber Bragg grating sensors. The scheme is based on the combination of active WDM channel switching and passive, instantaneous interferometry,
Niewczas, Pawel, P. Orr, Orr, Philip, P. Niewczas   +3 more
core   +1 more source

Quadratic behavior of fiber Bragg grating temperature coefficients [PDF]

, 2004
We describe the characterization of the temperature and strain responses of fiber Bragg grating sensors by use of an interferometric interrogation technique to provide an absolute measurement of the grating wavelength. The fiber Bragg grating temperature
Bennion, Ian, Read, I, Foote, P D, Jones, J. D C, MacPherson, W N, Maier, Robert R.J., MacPherson, William N., Flockhart, G. M H, Flockhart, G M H, Read, Ian, Jones, Julian D.C., Flockhart, Gordon M.H., Barton, J S, Barton, James S., Maier, R. R J; id_orcid, MacPherson, William N.; id_orcid, Foote, Peter D., Maier, R R J, Chisholm, K E, Bennion, I, Zhang, Lin, Jones, J D C, Chisholm, Karen E., Zhang, L, Read, Ian J.   +24 more
core   +1 more source

Principles and Applications of Seismic Monitoring Based on Submarine Optical Cable

Sensors, 2023
Submarine optical cables, utilized as fiber-optic sensors for seismic monitoring, are gaining increasing interest because of their advantages of extending the detection coverage, improving the detection quality, and enhancing long-term stability.
Junzhe Yu, Pengbai Xu, Zhangjun Yu, Kunhua Wen, Jun Yang, Yuncai Wang, Yuwen Qin   +6 more
doaj   +1 more source

Applications of polymer optical fibre grating sensors to condition monitoring of textiles [PDF]

, 2009
Fibre Bragg gratings (FBGs) in polymer optical fibres (POFs) have been used to measure the strain in a woven textile. FBGs in both POFs and silica optical fibres were attached to a woven textile specimen, and their performance characterised.
Ye, Chen Chun, Dulleu-Barton, J. M., Chambers, A. R., Lennard, F. J., D. D. Eastop, Zhang, Chi, Peng, Gang-Ding, A. R. Chambers, Eastop, D.D., Dulieu-Barton, Janice M., 叶陈春, D. J. Webb, Webb, D. J., F. J. Lennard, C. C. Ye, Ye, C.C., Chambers, A.R., G.-D. Peng, Zhang, C., Lennard, F.J., Webb, D.J., Peng, G.-D., J. M. Dulieu-Barton, Ye, C. C., Eastop, D. D., C. Zhang, Webb, David J., Peng, G. D., Peng, G.D, Dulieu-Barton, J.M.   +29 more
core   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Flockhart, G M H, Cranch, G A, Kirkendall, C K   +2 more
core   +1 more source

Optical Sensors Based on Plastic Fibers [PDF]

Sensors, 2012
The recent advances of polymer technology allowed the introduction of plastic optical fiber in sensor design. The advantages of optical metrology with plastic optical fiber have attracted the attention of the scientific community, as they allow the development of low-cost or cost competitive systems compared with conventional technologies.
Lúcia Bilro, Nélia Alberto, João L. Pinto, Rogério N. Nogueira   +3 more
openaire   +3 more sources

Optical Gas Sensor Fabrication Based on Porphyrin-Anchored Electrostatic Self-Assembly onto Tapered Optical Fibers [PDF]

, 2012
Tapered optical fibers with nano-assembled coatings of thicknesses of order tens of nanometres were used for the detection of ammonia gas. The film coating was composed of alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) and poly(allylamine ...
Lee, Seung-Woo, Tatam, Ralph P., Korposh, Sergiy, James, Stephen W., Batty, William J., Jarzebinska, Renata   +5 more
core   +1 more source

Influence of Bubble Deformation on the Signal Characteristics Generated Using an Optical Fiber Gas–liquid Two-Phase Flow Sensor

Sensors, 2021
The use of optical fiber probe in two-phase flow measurements is very frequently encountered, especially in the applications of chemical engineering and petroleum industries.
Yu Ma, Yangrui Zhang, Song Li, Weimin Sun, Elfed Lewis   +4 more
doaj   +1 more source