Results 251 to 260 of about 75,803 (292)
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IEEE SENSORS 2014 Proceedings, 2014
A fiber optic curvature sensor based on discrete Fiber Bragg gratings inscribed in a multi-core fiber is presented. The individual cores of the multi-core fiber are each interrogated by a custom-built spectrometer running at up to 20 kHz. They are interfaced with a custom-tapered combiner of single-core fibers fusion spliced to the multi-core fiber ...
Leyendecker, Patrick, Haslinger, Robert
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A fiber optic curvature sensor based on discrete Fiber Bragg gratings inscribed in a multi-core fiber is presented. The individual cores of the multi-core fiber are each interrogated by a custom-built spectrometer running at up to 20 kHz. They are interfaced with a custom-tapered combiner of single-core fibers fusion spliced to the multi-core fiber ...
Leyendecker, Patrick, Haslinger, Robert
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Environmental Monitoring and Assessment, 2015
We describe a low-cost fiber optic sensor for measuring photosynthetically active radiation (PAR) in turbulent flow. Existing technology was combined in a novel way for probe development addressing the need for a small but durable instrument for use in flowing water. Optical components including fiber optics and a wide-spectrum light detector were used
Wayne, Chudyk, Kyle F, Flynn
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We describe a low-cost fiber optic sensor for measuring photosynthetically active radiation (PAR) in turbulent flow. Existing technology was combined in a novel way for probe development addressing the need for a small but durable instrument for use in flowing water. Optical components including fiber optics and a wide-spectrum light detector were used
Wayne, Chudyk, Kyle F, Flynn
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1980 Ultrasonics Symposium, 1980
Fiber optic sensors appear to offer significant performance advantages when compared to conventional acoustic, magnetic, and rotation sensors. This paper will review the state of the art in this newly developing technology area.
T. G. Giallorenzi +2 more
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Fiber optic sensors appear to offer significant performance advantages when compared to conventional acoustic, magnetic, and rotation sensors. This paper will review the state of the art in this newly developing technology area.
T. G. Giallorenzi +2 more
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SPIE Proceedings, 1985
The investigation results on phase optical sensors are presented. Phaseacoustic sensitivity of two- and three-layered (w-type) fibers with various polimeric jackets as well as without any coatings has been measured. To provide a rapid and reliable measurement of the phaseacoustic sensitivity of fibers it is suggested that a wideband acoustic noise ...
A. I. Minchenko, Yu. A. Kravtsov
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The investigation results on phase optical sensors are presented. Phaseacoustic sensitivity of two- and three-layered (w-type) fibers with various polimeric jackets as well as without any coatings has been measured. To provide a rapid and reliable measurement of the phaseacoustic sensitivity of fibers it is suggested that a wideband acoustic noise ...
A. I. Minchenko, Yu. A. Kravtsov
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2002
Fiber optic sensors have become indispensable tools for biomedical study because of their unique features such as (1) high sensitivity, (2) small footprint and endoscopic compatibility, (3) multiple agent distributive sensing capability, and (4) immunity from electromagnetic interference.
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Fiber optic sensors have become indispensable tools for biomedical study because of their unique features such as (1) high sensitivity, (2) small footprint and endoscopic compatibility, (3) multiple agent distributive sensing capability, and (4) immunity from electromagnetic interference.
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Fiber-optic microbend sensor structure
Optics Letters, 1997We proposed and experimentally investigated a novel microbend sensor structure. The structure is composed of single-mode leads and multimode sensing fiber. The proposed structure exhibited a level of sensitivity as much as six times higher than that of the classical microbend sensor configuration when the same sensing fiber was used.
D, Ethonlagi, M, Zavrsnik
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Annals of Biomedical Engineering, 1983
The theory, construction and performance of a catheter tip optical PCO2 probe is described. The sensor, called the Opticap, is made with plastic fiber optics. One fiber carries light to the sensitive tip which is a silicone rubber tube 0.6 mm dia. X 1.0 mm long filled with a phenol red-KHCO3 solution.
G G, Vurek +2 more
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The theory, construction and performance of a catheter tip optical PCO2 probe is described. The sensor, called the Opticap, is made with plastic fiber optics. One fiber carries light to the sensitive tip which is a silicone rubber tube 0.6 mm dia. X 1.0 mm long filled with a phenol red-KHCO3 solution.
G G, Vurek +2 more
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2011
Preface. About the Authors. Contributors. 1 The Emergence of Fiber Optic Sensor Technology (Eric Udd). 2 Optical Fibers (Daniel A. Nolan, Paul E. Blaszyk, and Eric Udd). 3 Light Sources (Eric Udd). 4 Optical Detectors (William B. Spillman, Jr.). 5 Optical Modulators for Fiber Optic Sensors (Leonard M. Johnson).
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Preface. About the Authors. Contributors. 1 The Emergence of Fiber Optic Sensor Technology (Eric Udd). 2 Optical Fibers (Daniel A. Nolan, Paul E. Blaszyk, and Eric Udd). 3 Light Sources (Eric Udd). 4 Optical Detectors (William B. Spillman, Jr.). 5 Optical Modulators for Fiber Optic Sensors (Leonard M. Johnson).
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Brillouin fiber optic current sensor
Optical Review, 1996A novel reciprocal Brillouin fiber optic current sensor has been developed and tested. The sensor shows a sensitivity of 126 Hz/A that is very close to the maximum sensitivity obtained by using fibers without linear birefringence. The limitations due to the Kerr effect and optical feedbacks in the system are also investigated.
A. Küng, P.-A. Nicati, P. A. Robert
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2013
Fiber optic technology started in 1970’s, for long distance telecommunications, and it has experienced an exponential growth during the last four decades. Sensing applications are a small spin-off from this technology, taking profit of developments done for optoelectronic components and concepts. Optical fibers are cylindrical dielectric waveguides for
J. Alfredo Güemes +1 more
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Fiber optic technology started in 1970’s, for long distance telecommunications, and it has experienced an exponential growth during the last four decades. Sensing applications are a small spin-off from this technology, taking profit of developments done for optoelectronic components and concepts. Optical fibers are cylindrical dielectric waveguides for
J. Alfredo Güemes +1 more
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