Relevant bibliographies by topics / Optical equipment

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Optical equipment'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Optical equipment"

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Savage, Neil. "Optical polishing equipment." Nature Photonics 4, no. 12 (December 2010): 880–81. http://dx.doi.org/10.1038/nphoton.2010.273.

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INAGAKI, YUJI. "Optical information processing equipment." Review of Laser Engineering 21, no. 1 (1993): 178–81. http://dx.doi.org/10.2184/lsj.21.178.

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Zhao, Wei Ling, Can Zhao, Jun Ting Cheng, and Hai Yan Yue. "Accuracy Verification Method about Optical Three-Dimensional Measuring Instrument." Advanced Materials Research 142 (October 2010): 204–8. http://dx.doi.org/10.4028/www.scientific.net/amr.142.204.

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Three-dimensional measuring instrument has high precision, high efficiency, convenience, and the stability characteristics, and is widely used in many manufacturing industries. In the process of equipment purchases and transportation, there is the need for precision test equipment. Reference to the VDI/VDE 2634 standard developed by German and equipments of other manufacturers, make reasonable accuracy test method, according to measurement data maximum error, minimum error, average error, standard deviation concept, calculate the measurement comprehensive system error, and calculate its accuracy for foreign equipment.
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TAKAYAMA, Kazuyoshi. "Flow visualization equipment for optical measurements." JOURNAL OF THE FLOW VISUALIZATION SOCIETY OF JAPAN 5, no. 16 (1985): 23–30. http://dx.doi.org/10.3154/jvs1981.5.23.

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Belyaev, B. I., L. V. Katkovskyi, Yu A. Krot, A. V. Rogovets, V. A. Sosenko, and A. D. Khomitsevich. "Optical equipment for the space experiment «Diagnostics»." Kosmìčna nauka ì tehnologìâ 16, no. 2 (March 30, 2010): 35–40. http://dx.doi.org/10.15407/knit2010.02.035.

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Nordin, R. A., W. R. Holland, and M. A. Shahid. "Advanced optical interconnection technology in switching equipment." Journal of Lightwave Technology 13, no. 6 (June 1995): 987–94. http://dx.doi.org/10.1109/50.390216.

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Giglio, M., G. Martines, G. Mura, S. Podda, and M. Vanzi. "An automated lifetest equipment for optical emitters." Microelectronics Reliability 42, no. 9-11 (September 2002): 1311–15. http://dx.doi.org/10.1016/s0026-2714(02)00141-5.

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Tang, Zhifei, Junshi Gao, Tianpu Yang, Dongmei Liu, and Guangchong Dai. "Smart OLT equipment of optical access network." Optoelectronics Letters 19, no. 3 (March 2023): 159–63. http://dx.doi.org/10.1007/s11801-023-2146-6.

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Zhekov, Zhivko. "METHOD AND SPECTROPHOTOMETRIC EQUIPMENT FOR WATER RESEARCH." Journal scientific and applied research 5, no. 1 (May 5, 2014): 70–75. http://dx.doi.org/10.46687/jsar.v5i1.111.

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Modem measurement equipment must feature high measurement precision, swift operation, high sensitivity and reliability. The designing of such equipment includes coordination of the operation of optical, mechanical, and electronic assemblies and units, introduction of microprocessor systems and communication interface equipment etc. Therefore, the design, implementation, calibration etc. requirements for such equipment feature an ever growing variety strictness.
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Liu, Ming Bo, Guang Shun Zhang, Hong Chao Gao, and Qi Li. "The Design and Implementation of Testing System for Network Equipment Configuration Status and Light Power." Advanced Materials Research 950 (June 2014): 155–59. http://dx.doi.org/10.4028/www.scientific.net/amr.950.155.

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This article explains the design idea and implementation method of network equipment configuration status review and optical power detection system by remotely logging on network equipment, gives the comparative analysis result of the two methods of obtaining network equipment parameters, detailed introduces the design method and implementation process to get parameters of network equipments by remotely telnet logging on. System is tested in the practical application. Testing shows that system works stably, has good Real-Time property and high data precision. The system satisfies the requirement and is provided with some popularization and applied value.
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Dissertations / Theses on the topic "Optical equipment"

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Holman, Jason (Jason William) 1974. "Optical networking equipment manufacturing." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/44603.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2001.
Includes bibliographical references (leaf 70).
Celestica, a global contract manufacturer specializing in printed circuit board assembly and computer assembly, has recently begun manufacturing equipment for the optical networking equipment (ONE) industry. The expansion to include ONE manufacturing requires the development of new skills in handling optical fiber and components, a new supply chain strategy, and a new approach to manufacturing systems control. Celestica is developing a set of standards for ONE manufacturing that will support the rapid development of the new skills required for this industry. This work outlines the standards and explores the specific issues related to manufacturing with optical fiber, including the mechanical reliability and optical performance of various types of optical fibers. An overview of the telecommunications industry is provided, including an analysis of its supply chain structure. Observations are made on trends in the industry and the ways that these trends have affected Celestica in the past, and could impact Celestica in the future. Finally, Celestica's current approach to manufacturing systems control is evaluated, and suggestions are made for improving systems control and project management when manufacturing for such a rapidly evolving industry.
by Jason Holman.
S.M.
M.B.A.
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West, Ian Philip. "Optical fibre based pulse oximetry." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262607.

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Xu, Xiangqun. "Investigation of alterations in optical properties of biological tissues induced by chemical agents with optical coherence tomography." Thesis, Keele University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268330.

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Stanley, Warren. "Realisation of an optical tomography system using an amplitude modulation technique." Thesis, University of Hertfordshire, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275154.

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Allsop, Thomas David Paul. "A fibre optical strain sensor." Thesis, University of Plymouth, 1999. http://hdl.handle.net/10026.1/2779.

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Strain-sensing elements, fabricated in standard communications-grade single mode optical fibre, are increasingly being considered for application in structural health monitoring. The reason for this is the numerous advantages demonstrated by these devices compared with traditional indicators. This thesis describes work carried out on optical sensors at the University of Plymouth. The aim of this work was to achieve an optical fibre strain sensing system capable of measuring absolute strain with good resolution and having wide dynamic range, without bulky optical equipment and not susceptible to misalignment due to handling. Earlier work was devoted to study on an intrinsic Fabry-Perot interferometric sensor and an optical phase-shift detection technique. The sensing element investigated relied on the end face of an optical fibre as one mirror and the second mirror being a layer of Titanium Dioxide (TO2). Although some results are included, it was soon realised that this sensor had a number of problems, particularly with fabrication. As no simple solution presented itself, consideration was given to a sensor that made use of the change in reflectance of an intra-core fibre Bragg grating when the grating was subjected to strain. The bulk of work described in this thesis is concerned with this type of sensing element. The grating structure is inherently flexible and a number of structural formats were studied and investigated. The first and simplest grating considered was two linearly chirped Bragg gratings used in a Fabry-Perot configuration (a grating resonator). The sensor was tested using the sensing detection system and although the fabrication problems were overcome absolute strain measurement was unattainable. To achieve this end, a theoretical study of a number of grating structures was carried out using the T-matrix Formalism. Confidence in using this approach was gained by comparing the spectral behaviour of a proposed grating with results, which were given by another theoretical model for the same proposed grating. The outcome of this study was that two structures in particular showed promise with regard to absolutism (the measure of true strain) and linearity. Discussions held with the department of Applied Physics at Aston University about fabrication resulted in one of the proposed designs being abandoned due to difficulties of fabrication. The second structure showed more promise and fabrication attempts were put in hand. This grating is linearly-chirped with a Top-hat function and a sinusoidal perturbation as a taper function of the refractive index modulation. Experiments were performed, data were acquired and system performance for this sensor is presented. The thesis concludes that using such a fibre Bragg grating as the sensing element of a strain sensing system enables it to measure absolute strain without using bulky optical equipment. At present, the resolution of strain is limited by the quality of the grating being fabricated (anomalies on profile), this should improve once the fabrication technique is refined.
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Cronkite, Patrick Joseph 1961. "Design methods for focusing grating coupler using holographic optical elements." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276863.

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Light can be coupled out of a waveguide to a focused point by a focusing grating coupler and has possible applications in optical data storage. The grating can be fabricated with either e-beam techniques or holographic techniques. Two design methods are demonstrated that model the focusing grating coupler with holographic optical elements. Both methods take a geometrical optics approach to designing the holographic optical elements and both methods make use of commercially available ray trace programs. The first method uses complicated non-rotationally symmetric construction optics and requires either a modified ray trace program or special user defined surfaces. The second method involves a much simpler approach which did not require any changes to an existing ray trace program and requires only rotationally symmetric elements to correct the aberrations.
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Banyai, William Charles. "Optical nonlinearities in semiconductor doped glass channel waveguides." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184505.

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The nonlinear optical properties of a semiconductor-doped glass (SDG) channel waveguide were measured on a picosecond time-scale; namely, fluence-dependent changes in the absorption and the refractive index as well as the relaxation time of the nonlinearity. Slower, thermally-induced changes in the refractive index were also observed. The saturation of the changes in the absorption and the refractive index with increasing optical fluence is explained using a plasma model with bandfilling as the dominant mechanism. The fast relaxation time of the excited electron-hole plasma (20 ps) is explained using a surface-state recombination model. A figure of merit for a nonlinear directional coupler fabricated in a material with a saturable nonlinear refractive index is presented. The measured nonlinear change in the refractive index of the SDG saturates below the value required to effect fluence-dependent switching in a nonlinear directional coupler. Experiments with a channel-waveguide directional coupler support this prediction. However, absorption switching due to differential saturation of the absorption in the two arms of the directional coupler was observed.
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Jeshani, Mahesh. "Optical characterisation of cavitating flows in diesel fuel injection equipment." Thesis, City University London, 2013. http://openaccess.city.ac.uk/3414/.

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The recent advances in Fuel Injection Equipment (FIE) have led to the identification of deposits found in the fuel filters and injector equipment. The work carried out here identifies the effects of cavitating flows on the physical and chemical properties of diesel fuel in order to try to evaluate the mechanism for deposit formation in FIE equipment using optical techniques to characterise the cavitating flows. Two sets of experiments have been carried out in order to understand the impact of cavitating flow on diesel fuels. The first experiment investigated the effects of sustained cavitating flow using a fuel recirculation rig. Samples of commercial diesel were subjected to forty hours of intense cavitating flow across a diesel injector in a specially designed high-pressure recirculation flow rig. Changes to the optical absorption and scattering properties of the diesel over time were identified by the continuous measurement of spectral attenuation coefficients at 405 nm by means of a simple optical arrangement. Identical diesel samples ~ere maintained at 70°C for forty hours in a heated water bath, in order to distinguish the effects of hydrodynamic cavitation and the regulated temperature on the cavitated diesel samples. The commercial diesel samples subjected to high pressure cavitating flow and heat tests revealed a response to the flow and temperature history that was identified by an increase in the optical attenuation coefficients of the cavitated and heated samples. The contribution of cavitating flow and temperature to the variation in spectral attenuation coefficient was identified. It was hypothesised that the increases observed in the spectral attenuation coefficients of the cavitated commercial diesels were caused by the cavitation affecting the aromatics in the commercial diesel . samples. The fuels were sent for a GC x GC and particle count analysis and results show significant increase in particle number count in the fuels as a result of cavitating flow. An increase in particle count to such high magnitudes was not observed for the heat test samples. Qualitative chemical modelling results of the pyrolysis of fuel vapour cavities during collapse at high pressures and temperatures have shown possible pathways leading to the formation of particulates. The presence of aromatics in diesel fuel was considered to be key species to the formulation of soot particles, however at extreme pressures and temperature paraffins may also have the propensity to breakdown into aromatics and further on to the formation of soot particles as observed by the pathway analysis in the modelling in the appendix. The second study undertaken involved the analysis of the near nozzle external spray dropsizing and atomisation characteristics of fuels with different distillation profiles using LIF-MIE image ratios. The LIF -Mie image ratios were simultaneously captured synchronously with the internal nozzle hole cavitating flow. Internal nozzle flow and sac observations after needle return have led to the conclusions that flow angular momentum is sustained in the sac flow after needle return. This flow was observed to have a high angular momentum which reduced over time. During the end of needle return, bubbles were observed in the sac hole forming as a result of needle cavitation. These bubbles retained the angular momentum of the flow post injection (after needle seal). The vortical motion in the sac lead to regions of high and low pressures in the sac volume and thus resulted in suction and discharge of bubble in the nozzle holes. The bubbles may have a high propensity of containing a mixture of fuel and air vapour whereas the suction and discharge offers a pathway to external gases entering the nozzle holes and sac volume. For operating engine conditions this would be post-combustion exhaust gases re-entering the nozzle holes. The combination of the bubble formation, its vOI1Ical motion due to the angular momentum of the liquid flow, its composition and high temperature, may form ideal conditions for pyrolysis like reactions which may lead to the formation of soot particles and deposits in the nozzle hole, sac and needle. Fuels with different distillation profiles were investigated to observe their external drop sizing distributions at 350 bar injection pressure. Results showed that fuels with lighter fractional compositions which also had lower viscosity produced lower Sauter Mean Diameter (SMD) distributions than fuels with higher distillation fractions and higher viscosity. Whether this is as a consequence of the distillation profile alone and is not influenced by the viscosity differences has not been investigated yet and would form the basis of further investigations and publications.
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Twyford, Elizabeth J. "Optical interconnects : systems, devices and fabrication." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/13889.

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Cosgrave, Joseph Anthony. "Acoustic-optic monitoring of electrical power equipment using chromatic signal processing." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263845.

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Books on the topic "Optical equipment"

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A, Lessard Roger, Galstian Tigran, Université Laval, Institut national d'optique (Canada), International Commission for Optics, and Society of Photo-optical Instrumentation Engineers., eds. Optics in computing 2000: 18-23 June, 2000, Quebec City, Canada. Bellingham, Washington: SPIE--The International Society for Optical Engineering, 2000.

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P, Chavel, Miller D. A. B, Thienpont Hugo, European Optical Society, and Society of Photo-optical Instrumentation Engineers., eds. Optics in computing '98: 17-20 June 1998, Brugge, Belgium. Bellingham, Wash., USA: SPIE--The International Society for Optical Engineering, 1998.

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London), Colloquium on Test Equipment for Optical Communication Systems (1986. Colloquium on "Test Equipment for Optical CommunicationSystems". London: Institution of Electrical Engineers ElectronicsDivision, 1986.

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Kishan, Dholakia, Spalding Gabriel C, and Society of Photo-optical Instrumentation Engineers., eds. Optical trapping and optical micromanipulation: 2-6 August 2004, Denver, Colorado. Bellingham, Wash., USA: SPIE, 2004.

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James, Carney, Stelzer Ernie, and Society of Photo-optical Instrumentation Engineers., eds. Industrial optical sensing. Bellingham, Wash., USA: International Society for Optical Engineering, 1988.

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America, Optical Society of, and U.S. Army Research Laboratory., eds. Optics in computing: Technical digest : April 13-16, 1999, Snowmass Conference Center, Snowmass Village at Aspen, Colorado. Washington, DC: The Society, 1999.

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America, Optical Society of, International Commission for Optics, and Society of Photo-optical Instrumentation Engineers., eds. Optics in computing. Washington, DC: Optical Society of America, 2001.

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1946-, Miller Richard Kendall, ed. Optical computers: The next frontier in computing. Englewood/Fort Lee, NJ: Technical Insights, 1986.

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P, Lee T., ed. Current trends in optical amplifiers and their applications. Singapore: World Scientific, 1996.

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Dholakia, Kishan. Optical trapping and optical micromanipulation IV: 26-29 August, 2007, San Diego, California, USA. Edited by Society of Photo-optical Instrumentation Engineers. Bellingham, Wash: SPIE, 2007.

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Book chapters on the topic "Optical equipment"

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Hanson, Ronald K., R. Mitchell Spearrin, and Christopher S. Goldenstein. "Spectroscopy Equipment." In Spectroscopy and Optical Diagnostics for Gases, 217–25. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23252-2_13.

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Dvornikov, Sergey Viktorovich, Alexander Fedotovich Kryachko, Igor Anatolyevich Velmisov, and Dmitry Alexandrovich Zatuchny. "Receivers of Optical Systems." In Radio-Electronic Equipment in Civil Aviation, 129–50. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6199-1_6.

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Cullum, Martin. "Introduction to Session on Photon-Counting Equipment." In Instrumentation for Ground-Based Optical Astronomy, 511–15. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3880-5_49.

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Robinson, Lloyd B. "Introduction to Session on Equipment Available from Industry." In Instrumentation for Ground-Based Optical Astronomy, 731. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3880-5_77.

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Andersson, R., M. Holmsten, and L. Liedquist. "Calibration of Fibre Optical Measurement Equipment at SP." In Trends in Optical Fibre Metrology and Standards, 836. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0035-9_55.

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Li, Chunping, Peilin Wang, and Xin Chen. "Size-dependent optical properties of ZnO nanorods." In Advances in Energy Science and Equipment Engineering II, 1367–70. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315116174-100.

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Skhvediani, Angi, Tatiana Kudryavtseva, and Dmitrii Rodionov. "Regional Industrial Specialization: Case of Russian Electrical Equipment, Electronic and Optical Equipment Industry." In Communications in Computer and Information Science, 125–39. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60080-8_7.

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Mauk, Michael G., and James B. McNeely. "Equipment and Instrumentation for Liquid Phase Epitaxy." In Liquid Phase Epitaxy of Electronic, Optical and Optoelectronic Materials, 85–108. Chichester, UK: John Wiley & Sons, Ltd, 2007. http://dx.doi.org/10.1002/9780470319505.ch4.

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Ha, Jinyong. "Physical Principles and Equipment of Intravascular Optical Coherence Tomography." In Coronary Imaging and Physiology, 97–106. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2787-1_10.

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Machuca, Carmen Mas, and Ioannis Tomkos. "Optimal Monitoring Equipment Placement for Fault and Attack Location in Transparent Optical Networks." In Lecture Notes in Computer Science, 1395–400. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24693-0_125.

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Conference papers on the topic "Optical equipment"

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Potylitsyn, N. P., A. V. Britkov, Y. A. Krasyuk, N. A. Gorbanov, and V. V. Zayanchukovskiy. "CTV optical equipment." In 2005 15th International Crimean Conference Microwave and Telecommunication Technology. IEEE, 2005. http://dx.doi.org/10.1109/crmico.2005.1564825.

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Bilmes, G. M., Nestor A. Bolognini, Mario Gallardo, Jorge O. Tocho, Marcelo Trivi, D. Aljanati, E. Dicovskiy, and J. L. Propato. "School optical equipment." In IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, edited by Vera L. Brudny, Silvia A. Ledesma, and Mario C. Marconi. SPIE, 2001. http://dx.doi.org/10.1117/12.437076.

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Wellbrock, Glenn, and Tiejun Xia. "More Fiber, Less Equipment." In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/ofc.2024.m3d.5.

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Fiber will go even deeper into the network, but fewer and smaller boxes will be used as we continue to integrate connectivity with processing. This paper will provide examples at all layers of next gen networks. Full-text article not available; see video presentation
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Machuca, Carmen Mas, and Moritz Kiese. "Optimal placement of monitoring equipment in transparent optical networks." In 2007 6th International Workshop on Design and Reliable Communication Networks (DRCN). IEEE, 2007. http://dx.doi.org/10.1109/drcn.2007.4762281.

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Mohajer, Behzad, Peter Ajersch, Michael Bishop, Simon Shearman, Peter Saturley, and Marko Nicolici. "Liquid Cooling for Optical Networking Equipment." In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/ofc.2024.tu2a.3.

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This article provides insights into a successful upgrade of an air-cooled coherent metro router into a Hybrid Liquid/Air-cooled system. Additionally, an innovative solution is presented for integrating liquid-cooling into the body of pluggable optical modules.
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Qiu, Jigang, Guangbin Fan, Yang Lu, and Xiaokang Lin. "Use of embedded top-set box to reconstruct the traditional optical network equipment into ASON equipment." In Asia-Pacific Optical Communications, edited by Yong Hyub Won, Gee-Kung Chang, Ken-ichi Sato, and Jian Wu. SPIE, 2006. http://dx.doi.org/10.1117/12.691066.

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Sercel, Jeffrey P. "Production excimer laser equipment overview." In Applications in Optical Science and Engineering, edited by James A. Greer. SPIE, 1993. http://dx.doi.org/10.1117/12.143042.

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Hepplewhite, Christopher L., John J. Barnett, Karim Djotni, John G. Whitney, Justain N. Bracken, Roger Wolfenden, Frederick Row, et al. "HIRDLS monochromator calibration equipment." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by Marija Strojnik. SPIE, 2003. http://dx.doi.org/10.1117/12.507321.

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Slavicek, Karel, and Josef Vojtech. "CzechLight family of optical networking equipment." In 2010 10th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM). IEEE, 2010. http://dx.doi.org/10.1109/lfnm.2010.5624241.

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Liu, Min, zhihua Zhang, zijia Zhao, lihua Chen, and zhiliang zhao. "Research on adaptive interferometric measurement of complex vibration environment." In Optical Test, Measurement Technologies, and Equipment, edited by Xiaoliang Ma, Fan Wu, Bin Fan, Xiong Li, and Yudong Zhang. SPIE, 2019. http://dx.doi.org/10.1117/12.2505551.

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Reports on the topic "Optical equipment"

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York, Robert A. Equipment Grant: Nonlinear Dynamics of Quasi-Optical Device Arrays. Fort Belvoir, VA: Defense Technical Information Center, June 1995. http://dx.doi.org/10.21236/ada299186.

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Jenssen, H. Equipment for Diode Laser Pumping of New and Improved Optical Materials. Fort Belvoir, VA: Defense Technical Information Center, May 1999. http://dx.doi.org/10.21236/ada380041.

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Hochgreb, Simone. Optical Diagnostic Equipment for Research on Critical Processes in Spark-Ignition Engines. Office of Scientific and Technical Information (OSTI), August 1999. http://dx.doi.org/10.2172/758821.

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Zika, Rod G. Application of Ion Trap Mass Spectrometry (LC/Msn) to the Characterization of Coastal Optical Properties (Equipment Only). Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada626226.

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Gertslberger, Wolfgang, Merle Küttim, Tarmo Tuisk, Ulrika Hurt, Tarvo Niine, Tarlan Ahmadov, Margit Metsmaa, et al. Ringmajanduslike praktikate juurutamise võimaldajad ja barjäärid: uuringu aruanne. Tallinn University of Technology; Ministry of Economics and Communication, December 2021. http://dx.doi.org/10.11590/taltech.circular.economy.report.2021.

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This research study focused on the business models related to the circular economy of the four industries and their enablers and barriers have been studied. The research was conducted from September to December 2021 in Estonia by Tallinn University of Technology Sustainable Value Chain Management Working Group for the Ministry of Economic Affairs and Communications. The industries covered by the study were: 1) the computer, electronic and optical equipment industries; 2) chemicals and chemical industry, except plastics industry; 3) the electrical equipment industry; 4) metal industry.
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McHugh, Power, and Randell. L51972 Encroachment Monitoring via Earth Observation Data. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 2001. http://dx.doi.org/10.55274/r0011240.

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The objective of the pipeline encroachment monitoring project was to demonstrate the feasibility of using Earth observation (EO) satellites for early detection of third-party encroachment activities. Examples of encroachment activities include road construction, cable laying, farming, and residential or commercial development. Optical and synthetic aperture radar (SAR) images taken from space-borne platforms were evaluated for use in detecting encroachment activities. C-CORE and TransCanada Pipelines Ltd. conducted an encroachment field program near Whitecourt, Alberta. Various encroachment activities, principally involving heavy equipment, were staged and concurrent satellite-based optical (IKONOS) and SAR (RADARSAT) images acquired. These images were then analyzed for signatures of the encroachment events. A total of 22 multispectral and panchromatic IKONOS images and 14 RADARSAT SAR images were acquired. The IKONOS satellite proved to be effective in detecting smaller vehicles (for example, small trucks or Bobcat tractors) in areas that are free from cloud cover. RADARSAT proved effective in the detection of larger vehicles (for example, excavators or dump trucks), linear excavation, deforestation, and the provision of reliable coverage in all weather conditions.
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7

Tucker. L51728 Feasibility of a Pipeline Field Weld Real-Time Radiography (Radioscopy) Inspection System. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 1995. http://dx.doi.org/10.55274/r0010117.

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Inspection of pipeline field girth welds during pipeline construction is accomplished by film radiographic: methods. Film radiography of materials is a 70 year old technology. There have been many advances in that 70 year history in equipment and films, but the process of making the radiograph is essentially the same. The film radiography process is time-consuming, costly, environmentally impacting and very operator (inspector) dependent. There are recent and almost daily advances in technologies using x-ray imaging other than film. Double-jointed pipe welds at pipe mills and at double-joint operations have been inspected with stationary real-time radioscopic systems for many years. This electronic imaging technology, known as "�radioscopy"�, has the potential to significantly improve pipeline project schedules and cost by eliminating some of the shortcomings of film radiography. Radioscopy is currently accepted for use by many nationally accepted standards including API-SL, Specification for Line Pipe, and API-1104, Welding of Pipelines and Related Facilities. Most of the real-time systems in use today are fixed installations in pipe mills, foundries or fabrication shops. The ability to produce the required image sensitivity with real-time has been established by these fixed installations. These systems have proven to be very cost effective. In the course of conducting this study, QCC attended several conferences, including the International Society for Optical Engineering (SPIE) Conference in Boston, contacted several hundred potential vendors of radioscopic and radiographic equipment, witnessed demonstrations on existing radioscopic imaging systems and conducted several breadboard system demonstrations. The enclosed exhibit section contains a list of vendors that have products applicable to a radioscopic system.
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8

Weiser, Martin W. Ceramics and Optics Laboratory Equipment Improvements. Fort Belvoir, VA: Defense Technical Information Center, March 1995. http://dx.doi.org/10.21236/ada319914.

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9

Foltz, Stuart, and Daniel Hooks. Lock operation improvements. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40402.

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The U.S. Army Corps of Engineers (USACE) owns or operates 236 locks at 191 sites (HQUSACE 2016). Although the locks at these sites generally perform reliably, more than half of these structures have surpassed their 50-year economic design life and as such, there are increasing concerns about their continued safe, reliable operation. This work was undertaken to review lock operating equipment, maintenance practices, records pertaining to accidents and equipment failures, and lighting systems; to identify alternative improvements to equipment and equipment maintenance practices; and to analyze and compare those alternatives to determine and recommend optimal solutions. This report documents some lessons learned, primarily to share information that others might find useful. Note that the recommendations in this report should not be viewed as policy, although some might be considered by those creating policy.
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10

Svedeman. L51729 Gas Scrubber Performance Evaluation - Measurement Methods. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), April 1995. http://dx.doi.org/10.55274/r0010420.

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Abstract:
Scrubbers and separators are used in natural gas pipelines to remove solid and liquid materials from the gas stream. Failure to remove the entrained materials from the gas can result in equipment damage, increased pressure drop due to liquid accumulation, flow measurement errors, and corrosion. The performance of separators is rarely tested after a separator is installed because there is a lack of test instrumentation and it is difficult to conduct tests at the high pressures. The only indicators of poor separator performance are recurring problems in downstream equipment or the detection of accumulated materials in downstream piping. Instrumentation is needed that can verify separator performance when the unit is installed and to periodically monitor separator performance. The report documents results of instrument tests. The objectives of the instrument evaluations were to verify that the instruments could be used to measure particles penetrating a separator, to provide a comparative evaluation of the instruments, and to identify any measurement problems that could be encountered in field testing. One important result was that the separator minimum removable drop size increased as the operating pressure increased. This trend is not generally known, since there is a lack of test results for pressures above atmospheric pressure. The separator performance test results are documented in this report. Two different particle measuring instruments were evaluated for documenting separator performance. The two instruments were the video imaging system with automatic image analysis and the laser-based phase Doppler particle measuring system. The instruments were evaluated in laboratory tests that were conducted on a commercially available vane-type separator. The objectives of the instrument evaluations were to verify that the instruments could be used to measure particles penetrating a separator, to provide a comparative evaluation of the two instruments, and to identify any measurement problems that could be encountered in field testing. The video imaging system has a number of attractive attributes, but it was not able to measure the small diameter drops at the separator exit. The primary limitation was that the optical system could not clearly image the small drops (in the range from 5 to 30 um). The phase Doppler particle measuring system was capable of measuring all of the parameters needed to document the separator performance. Based on the instrument evaluations, future efforts on developing measurement methods for documenting separator performance should focus on adapting the phase Doppler system to field testing.
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