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The analysis of fiber optics for macro bending-based slope sensors using SMF-28 single-mode optical fibers has been successfully conducted. Fiber optics were treated to silicon rubber molding and connected with laser light and power meters to measure the intensity of laser power generated. The working principle was carried out using the macrobending phenomenon on single-mode optical fibers. The intensity of laser light in fiber optic cables decreases in the event of indentation or bending of the fiber optic cable. Power losses resulting from the macrobending process can be seen in the result of the information sensitivity of fiber optics to the change of angle given. From the results of the study, the resulting fiber optic sensitivity value is -0.1534o/dBm. The larger the angle given, the lower the laser intensity received by the power meter.
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Baumbick, R. J. "Fiber Optics for Propulsion Control Systems." Journal of Engineering for Gas Turbines and Power 107, no. 4 (October 1, 1985): 851–55. http://dx.doi.org/10.1115/1.3239822.
The term “fiber optics” means the use of dielectric waveguides to transfer information. In aircraft systems with digital controls, fiber optics has advantages over wire systems because of its inherent immunity to electromagnetic noise (EMI) and electromagnetic pulses (EMP). It also offers a weight benefit when metallic conductors are replaced by optical fibers. To take full advantage of the benefits of optical waveguides, passive optical sensors are also being developed to eliminate the need for electrical power to the sensor. Fiber optics may also be used for controlling actuators on engine and airframe. In this application, the optical fibers, connectors, etc., will be subjected to high temperatures and vibrations. This paper discusses the use of fiber optics in aircraft propulsion systems, together with the optical sensors and optically controlled actuators being developed to take full advantage of the benefits which fiber optics offers. The requirements for sensors and actuators in advanced propulsion systems are identified. The benefits of using fiber optics in place of conventional wire systems are discussed as well as the environmental conditions under which the optical components must operate. Work being done under contract to NASA Lewis on optical and optically activated actuators sensors for propulsion control systems is presented.
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HOTATE, Kazuo. "Special Issue on Fiber-Optics. Fiber Optic Gyros." Review of Laser Engineering 22, no. 4 (1994): 253–64. http://dx.doi.org/10.2184/lsj.22.253.
Yanuary, Tio Hanif, and Lita Lidyawati. "Analisis Link Budget Penyambungan Serat Optik Menggunakan Optical Time Domain Reflectometer AQ7275." Jurnal Teknik Elektro 10, no. 1 (June 20, 2018): 36–40. http://dx.doi.org/10.15294/jte.v10i1.13996.
An optical fiber is a high-speed telecommunication transmission medium. Principally, an optical fiber is made of a very fine glass fiber material, which is able to transmit light waves using light reflection method on the surface of the fiber optics core. An underground installation of the fiber optics makes this device robust from external interferences. However, the fiber optic cable performance should always be checked to maintain performance during data transmission process. One way to test fiber optics cable performance is by using an Optical Time - Domain Reflectometer (OTDR) device. This device sends a light wave from one point of the fiber optics cable. The light wave then returns when reaching the other point of the fiber optic cable while carrying some measurement parameters especially the physical length and attenuation of a fiber optic cable. The evaluation of the fiber optics cable performance requires the preparation, installation, and configuration of the OTDR. In this paper, we conducted evaluation on the performances of fiber optics cable. The data generated by the performed evaluation indicated an occurring attenuation on the fiber optics cable along 64.402 km of its lengths.
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Simara Azizova, Simara Azizova. "FIBER OPTIC SENSORS." PIRETC-Proceeding of The International Research Education & Training Centre 23, no. 02 (April 19, 2023): 94–100. http://dx.doi.org/10.36962/piretc23022023-94.
In addition to the benefits, recent developments and cost reductions have sparked interest in fiber optical sensing. In order fiber optic sensors must be made, researchers integrated optoelectronic devices with fiber optic telecommunications' byproducts. In the past few decades, numerous studies using various research methods and fiber optic sensors have been carried out. The most popular sensor types for fiber optics are those based on intensity, phase, and wavelength. An overview of optic sensors and their uses is provided in this paper. Keywords: Fiber optics, smart systems, interferometry, microbending, and fiber Bragg gratings (FBGs)
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DiGiovanni, David J., Ming-Jun Li, and Alan E. Willner. "Fiber optic nanotechnology: a new frontier of fiber optics." Nanophotonics 2, no. 5-6 (December 16, 2013): 311–13. http://dx.doi.org/10.1515/nanoph-2013-0053.
Mohammed, Salim Qadir, and Asaad M. Asaad M. Al-Hindawi. "Study of Optical Fiber Design Parameters in Fiber Optics Communications." Kurdistan Journal of Applied Research 2, no. 3 (August 27, 2017): 302–8. http://dx.doi.org/10.24017/science.2017.3.52.
Fiber optics is an important part in the telecommunication infrastructure. Large bandwidth and low attenuation are features for the fiber optics to provide gigabit transmission. Nowadays, fiber optics are used widely in long distance communication and networking to provide the required information traffic for multimedia applications. In this paper, the optical fiber structure and the operation mechanism for multimode and single modes are analyzed. The design parameters such as core radius, numerical aperture, attenuation, dispersion and information capacity for step index and graded index fibers are studied, calculated and compared for different light sources.
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Krivenko, Yu E., and E. I. Andreeva. "Traffic interception in fiber optical video-systems." Journal of Physics: Conference Series 2086, no. 1 (December 1, 2021): 012150. http://dx.doi.org/10.1088/1742-6596/2086/1/012150.
Abstract In fiber-optic video systems, as well as in optical communication systems, standard single mode optical fibers (SSMF, standard G.652) are usually used. One of the advantages of these fibers is the ability to use CWDM in a wide spectrum. At the same time, more optimal near the wave-length of 1550 nm are provided by non-zero dispersion fiber (NZDSF, standard G.655) fibers. However, as studies have shown, these optical fibers have an increased sensitivity to bending. This fact can be used to traffic interception. It is shown that fiber-optics systems with SSMF have more protection from traffic interception than systems with NZDSF. To transmit a high-confidentiality video signal, special techniques, such as frequency modulation, can be used, or additional noise signals can be added.
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S. Kavitha. "An Overview of Free Space Optics Communication System." December 2022 4, no. 4 (November 10, 2022): 222–29. http://dx.doi.org/10.36548/jsws.2022.4.001.
Free space optics is a kind of broadband communication technique that transmits the signals, in the atmosphere through laser beams. In some cases, the laser beams are replaced with infrared and modified beams. Free Space Optics (FSO) is also referred as Free Space Photonics that works same as the principle of fiber optic communication where the source beams are transferred through air medium. In the traditional fiber optic communication, the optical fibers were used for transferring the beam signals. The FSO methodology is widely employed in various ubiquitous applications for their cost and deployment effectiveness. The motive of the work is to explore the concepts and theories behind the operation of different FSO models with their recent progress.
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Willebrand, H. A., and B. S. Ghuman. "Fiber optics without fiber." IEEE Spectrum 38, no. 8 (August 2001): 40–45. http://dx.doi.org/10.1109/6.938713.
Kuhlmey, Boris T. "Theoretical and numerical investigation of the physics of microstructured optical fibres." Connect to full text, 2004. http://setis.library.usyd.edu.au/adt/public_html/adt-NU/public/adt-NU20040715.171105.
Thesis (Ph. D.)--School of Physics, Faculty of Science, University of Sydney, 2004. (In conjunction with: Université de Droit, d'Économie et des Sciences d'Aix-Marseille (Aix Marseille III)). Bibliography: leaves 196-204.
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Paye, Corey. "An Analysis of W-fibers and W-type Fiber Polarizers." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32474.
Optical fibers provide the means for transmitting large amounts of data from one
place to another and are used in high precision sensors. It is important to have a good
understanding of the fundamental properties of these devices to continue to improve their
applications.
A specially type of optical fiber known as a W-fiber has some desirable properties
and unique characteristics not found in matched-cladding fibers. A properly designed W-
fiber supports a fundamental mode with a finite cutoff wavelength. At discrete
wavelengths longer than cutoff, the fundamental mode experiences large amounts of loss.
The mechanism for loss can be described in terms of interaction between the fiberâ ¢s
supermodes and the lossy interface at the fiberâ ¢s surface. Experiments and computer
simulations support this model of W-fibers.
The property of a finite cutoff wavelength can be used to develop various fiber
devices. Under consideration here is the fiber polarizer. The fiber polarizer produces an
output that is linearly polarized along one of the fiberâ ¢s principal axes. Some of the
polarizer properties can be understood from the study of W-fibers. Master of Science
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Greaves, James David. "Numerical analysis of the outside vapor deposition process." Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1183491109.
Haskell, Adam Benjamin. "A Durability and Utility Analysis of EFPI Fiber Optic Strain Sensors Embedded in Composite Materials for Structural Health Monitoring." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/HaskellAB2006.pdf.
Srinivas, K. T. "Axial strain effects on optical fiber mode patterns." Thesis, This resource online, 1987. http://scholar.lib.vt.edu/theses/available/etd-04122010-083554/.
Lyyttkäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing /." Connect to full text, 2004. http://setis.library.usyd.edu.au/adt/public_html/adt-NU/public/adt-NU20041011.120247.
Lyytikäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." Connect to full text, 2004. http://hdl.handle.net/2123/597.
Thesis (Ph. D.)--University of Sydney, 2004. Title from title screen (viewed 14 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Physics, Faculty of Science. Includes bibliographical references. Also available in print form.
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Washburn, Brian Richard. "Dispersion and nonlinearities associated with supercontinuum generation in microstructure fibers." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/30964.
Fiber optics technology is being used in many applications, both in
the military world and in the industrial world. A broad overview of
this technology is provided, including a discussion of the fundamentals
of fiber operation and component characteristics.
Applications of fiber optics in both military and industrial
communities is addressed, identifying specific examples in both cases.
In addition, market projections and technology trends are discussed for
both the military and industrial communities. Master of Science
Eversberg, Thomas, and Klaus Vollmann. "Remarks on Fiber Optics Fiber optics." In Spectroscopic Instrumentation, 411–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44535-8_11.
Mitschke, Fedor. "A Survey of Nonlinear Processes." In Fiber Optics, 225–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52764-1_10.
Burger, Robert J., and David A. Greenberg. "Designing with fiber-array optics." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tuii5.
Fiber-array optic composites combine fiber-optic, microlens array, and Fourier-optic properties and allow for many novel, manufacturable, cost-effective designs. Optical elements include fiber-optic faceplates, couplers, inverters, tapers, concentrators, reformatters, field limiters, and resolution filters. Faceplates with high numerical aperture provide substrates for phosphor screens and other energy-conversion devices. Fiber array field flatteners and couplers reduce the size, cost, and weight of optical designs. Inverters with concave surfaces provide on-axis, unobstructed field flattening and image erection in a compact package unparalleled by classical optics. Tapers offer magnification or minification with aspect ratios less than unity and also have the unique capability to illuminate and observe from one face. Fiber-array optics have extraordinary potential in the areas of photonics and integrated optics because they combine optical, mechanical, and electronic properties into one composite. Examples include digital cameras with circuit patterns and active devices on one side that transmit to circuits, devices, or a film imaging medium on the opposite side. New opportunities in optical computing and switching are suggested by the realization of the fractal dimension of array architectures. The design flexibility of fiber-array optics provides designers with tools to create many unique, manufacturable, low-cost optical and photonic systems.
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Zhao, P., J. M. Mariotti, P. Léna, V. Coudé du Foresto, and G. Perrin. "Fiber Optic Fourier and Double Fourier Interferometer: progress report." In Fourier Transform Spectroscopy. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/fts.1995.ffd21.
Fiber optic Fourier transform spectrometer(FTS) may find its applications in gas sensing, space astronomy, etc. because of its compactness, low cost, etc.. Similarly, Fiber optic double Fourier interferometer is very attractive for double Fourier interferometric imaging(DFII) with telescope array. In both fiber optic FTS and fiber optic DFII, all optical operations are carried out with guided optics(optical fiber and directional coupler). Beams are transported in fibers. Beam splitting and combining are performed by directional couplers. Optical path delay is generated by stretching fibers(or, probably with combination with optical switchs) which are usually wrapped onto piezoelectric(p/z) tubes driven by high voltage.
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Bogert, G. A., E. J. Murphy, and R. T. Ku. "A Low Crosstalk 4x4 Ti:LiNbO3 Optical Switch with Permanently Attached Polarization-Maintaining Fiber Arrays." In Integrated and Guided Wave Optics. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/igwo.1986.pdp3.
We describe a single polarization, non-blocking 4x4 Ti:LiNbO3 optical switch array with very low single switch crosstalk (≤ - 35dB). The inputs to one of the several devices made have been permanently attached to four laser transmitters using polarization maintaining fiber. For this purpose, an array of four fibers was assembled using specially designed silicon grooves and externally keyed polarization maintaining fiber1. The polarization maintaining fiber was lensed and aligned to the laser in a standard package.
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Yamashita, Mikio. "Femtosecond Laser Pulse Compression by an Organic Crystalline Fiber." In Nonlinear Optics. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nlo.1992.wa3.
Compression of femtosecond optical pulses using a single-mode fused silica fiber (glass fiber) always needs high amplification of laser output pulses because of a low nonlinear refractive index n2 G of its fiber.1) This leads to some problems concerning the pulse stability in time and space, the pulse repetition rate, the optical damages to the glass fiber, and the precise adjustment of a big amplifier system. In order to solve these problems we inverstigated femtosecond-response, highly third-order nonlinear organic crystalline fibers.
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Li, Yao, and Ting Wang. "Side-coupling Polymer Fiber Optics for Optical Interconnects." In Optics in Computing. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/oc.1997.ofa.5.
Polymer optical fibers (POF's) have recently drawn increasing attention in optical data communication community. The use of POF's allows low cost large bandwidth optical communications for distances shorter than 100 meters. A simple reason behind the low cost is that a large fiber diameter (0.75-1.0 mm) permits the use of plastic injection-molded connectors which are much cheaper than conventional multi-element metal connectors for glass optical fibers (GOF's). In this paper, we further explore the applications of POF's to short distance optical interconnections. The focus here is on how to provide inexpensive couplings for POF interconnected data links.
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Wang, Zheng, Ayman F. Abouraddy, Fabien Sorin, Sylvain Danto, Ofer Shapira, John Joannopoulos, and Yoel Fink. "Multimaterial Fibers and Integrated Fiber Photonic Devices." In Frontiers in Optics. Washington, D.C.: OSA, 2008. http://dx.doi.org/10.1364/fio.2008.fwr4.
Bennett, K., J. Koh, J. Coon, C. K. Chien, A. Artuso, X. Chen, D. Nolan, and M. J. Li. "Specialty fibers for fiber optic sensor application." In Optics East 2007, edited by Eric Udd. SPIE, 2007. http://dx.doi.org/10.1117/12.750087.
Mitchell, Gordon L., James C. Hartl, David A. McCrae, Roger A. Wolthuis, Elric W. Saaski, Kathi C. Garcin, and H. R. Willard. "Viologen-based fiber optic oxygen sensors: optics development." In OE Fiber 91, edited by Robert A. Lieberman. SPIE, 1992. http://dx.doi.org/10.1117/12.56528.
In the past five years the optical apparatus, heart of a photon correlation spectroscopy (PCS) experiment, has undergone major advances through the deployment of optical fibers. The once cumbersome apparatus comprising of bulk optics, photomultipliers, and goniometers has been revolutionized through the miniaturization achievable by advances in semiconductor lasers, fiber optics and semiconductor photon detectors. Tanaka and Benedek1 were the first to report the use of optical fibers in PCS systems. The first fiber optic back scatter system, developed by Dyott2, was applied to the characterization of size3-4, and motility5. Auweter and Horn6 modified the Ross et al.3 device by replacing the "hole-in-mirror" with a multimode directional fiber optic coupler. Dhadwal7 used a graded index microlens to replace the fiber coupler. These fiber optic back scatter systems provide a homodyne detection of the scattered light, and as such are limited in their effectiveness in the study of concentrated suspension. In order to alleviate this difficulty Dhadwal et al.8 developed a self-beating back scatter fiber optic probe, which has proved effective in the study of concentrated aqueous suspensions of polystyrene spheres, as well as in the study of proteins systems in excised, but intact, human eye lenses9. A generalized fiber optic receiver was developed independently by Brown10 and by Dhadwal and Chu11-12. In both devices an optical fiber is positioned in the focal plane of lens. Brown opted for the use of a plano-convex lens, while Dhadwal and Chu employed a cylindrical graded index microlens. These probes have added versatility and compactness to the optical system, without sacrificing detection efficiency. Dhadwal and Ansari13 used a linear array of optical fibers positioned in the back focal plane of a graded index microlens to provide simultaneous measurements of the scattered light at 11 scattering angles. Haller et al14 used large diameter optical fibers in a general purpose laser light scattering facility.
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Ng, Joel, Ivan Kasimoff, Behzad Moslehi, and Tomasz Jannson. "Efficient expanded-beam multimode fiber-optic coupler based on nonimaging optics." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.mr4.
Expanded beam fiber-optic couplers offer great convenience for fiber cable connection, which is very desirable for local area network and other short-haul applications. But because most short-haul fibers are usually multimode, the large core causes significant aberration losses in conventional designs such as aspherics and GRIN lenses. Based on Liouville's theorem applied to nonimaging optics, we have developed a class of high efficiency expanded beam multimode fiber-optic coupler.
Reports on the topic "Fiber optics":
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Sobolewski, Roman. Superconducting Hot Electron Mixers for Fiber Optics. Fort Belvoir, VA: Defense Technical Information Center, August 2000. http://dx.doi.org/10.21236/ada401744.
Buckle, T. H. Applications of fiber optics in physical protection. Office of Scientific and Technical Information (OSTI), March 1994. http://dx.doi.org/10.2172/142502.
Holcomb, D. J., R. D. Hardy, and D. A. Glowka. Disposable fiber optics telemetry for measuring while drilling. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/471401.
Janney, MA. Sapphire Fiber Optics Sensors for Engine Test Instrumentation. Office of Scientific and Technical Information (OSTI), September 2003. http://dx.doi.org/10.2172/885700.
Dickey, C. E. Irradiation of fiber optics in the SSC tunnel. Office of Scientific and Technical Information (OSTI), March 1990. http://dx.doi.org/10.2172/69209.
Janney, M. A., and S. D. Nunn. Sapphire Fiber Optics Sensors for Engine Test Instrumentation. Office of Scientific and Technical Information (OSTI), August 2003. http://dx.doi.org/10.2172/940541.
Christian, Nathan L., and Linda K. Passauer. Impact of Fiber Optics on System Reliability and Maintainability. Fort Belvoir, VA: Defense Technical Information Center, June 1988. http://dx.doi.org/10.21236/ada201946.
Morgan, Timothy D., and Roy A. Kesmodel. FOG-M Fiber Optics Winding Process Simulation and Validation. Fort Belvoir, VA: Defense Technical Information Center, June 1988. http://dx.doi.org/10.21236/ada249034.
Fox, Glenn, and Sandy Wilford. Improved Fiber Optics Final Report CRADA No. TSB-957-94. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1418926.
Fox, G. Improved Fiber Optics Final Report CRADA No. TSB-957-94. Office of Scientific and Technical Information (OSTI), August 2000. http://dx.doi.org/10.2172/773211.
