Results 261 to 270 of about 44,543 (314)
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innoFSPEC: fiber optical spectroscopy and sensing
SPIE Proceedings, 2008innoFSPEC Potsdam is presently being established as in interdisciplinary innovation center for fiber-optical spectroscopy and sensing, hosted by Astrophysikalisches Institut Potsdam and the Physical Chemistry group of Potsdam University, Germany. The center focuses on fundamental research in the two fields of fiber-coupled multi-channel spectroscopy
Roth, Martin M. +3 more
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Optical Hole Sensing Using Fiber Optics
Applied Optics, 1966An important application of fiber optics to data processing is to illuminate hole positions of punched-card reading-stations. In the IBM 59 Card Verifier, flexible incoherently oriented bundles are employed to provide a reliable, efficient, and practical method of sensing holes in punched cards.
W L, Stahl, R J, Potter
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Fiber-Optic Sensing: A Historical Perspective
Journal of Lightwave Technology, 2008Sensing via fiber optics has occupied R&D groups for over 40 years, and some important transitions into the commercial sector have been achieved. We look at the fundamental concepts involved in the various sensing approaches, and the differentiators which have led to commercial impact. We also look to the future of fiber-optic sensors.
Culshaw, B., Kersey, A.
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Side-hole fiber for fiber-optic pressure sensing
Optics Letters, 1986An optical fiber whose structure is similar to that of the PANDA fiber, but with two open channels in the place of the stress members, is investigated. Variations of the internal or external gas pressure permit tuning of the fiber birefringence (10−4 rad m−1 Pa−1) over a wide range, including sign reversal, and application as a pressure sensor.
H M, Xie +3 more
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The fiber optical sensing based on Brillouin scattering
2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014Fiber optic sensor technology based on Brillouin scattering is rapidly spreading due to quantities is great precision measured such as temperature, strain and vibration in the long haul distributed sensing. In this study Brillouin scattering has been analyzed in the single mode fiber.
Ozturk, Nail Ferhat +3 more
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Polymer Optical Fibers for Sensing
Macromolecular Symposia, 2020AbstractSensing techniques based on optical fibers are used in numerous key fields. For example, optical fiber sensors are exploited in medical diagnostics, environmental monitoring, physical parameters detection, industrial applications, food safety, and security.
Cennamo N., Zeni L.
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Fiber-optic sensing of pressure and temperature
Applied Optics, 1979The use of a fiber-optic Mach-Zehnder interferometer to measure differences in temperature or pressure between two single-mode fiber arms is described. Temperature or pressure changes are observed as a motion of an optical interference fringe pattern. Values are calculated for the pressure and temperature dependence of the fringe motion.
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SPIE Proceedings, 2005
Monitoring of chemical species is important to a number of industrial and energy related industries. This paper presents a comparison of two fiber optic sensing schemes which are demonstrated for the detection of acetylene and carbon monoxide. The first sensor configuration utilizes the newly developed random hole optical fiber and detects gases ...
Gary Pickrell +3 more
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Monitoring of chemical species is important to a number of industrial and energy related industries. This paper presents a comparison of two fiber optic sensing schemes which are demonstrated for the detection of acetylene and carbon monoxide. The first sensor configuration utilizes the newly developed random hole optical fiber and detects gases ...
Gary Pickrell +3 more
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Status of Fiber Optic Acoustic Sensing
8th Optical Fiber Sensors Conference, 1992In the past few years a great deal of development effort has gone into fiber optic hy drophones for a variety of Naval applications. Significant demonstrations of fiber optic hydrophone technology have taken place in fixed undersea, towed array, submarine and Arctic environments.
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Recycling optical fibers for sensing
SPIE Proceedings, 2016Optical fiber sensors has become one of the most promising sensing technologies. Within all the optical fiber sensing technologies, the Fabry-Perot interferometer (FPI) micro-cavities are one of the most attractive, due to the size, linearity and higher sensitivity.
Paulo André +4 more
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