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Статті в журналах з теми "OPO Fibre":
Antipov, O. L., D. B. Kolker, A. A. Dobrynin, Yu A. Getmanovskii, V. V. Sharkov, M. A. Chuvakova, A. R. Akhmatkhanov, V. Ya Shur, I. A. Shestakova, and S. V. Larin. "Mid-IR optical parametric oscillation and second harmonic generation of repetitively pulsed output of a fibre-laser pumped Tm3+ :YAP laser in a fan-out periodically poled MgO:LiNbO3 crystal." Quantum Electronics 52, no. 3 (March 1, 2022): 254–61. http://dx.doi.org/10.1070/qel18006.
Ashimatey, Bright S., Brett J. King, Stephen A. Burns, and William H. Swanson. "Evaluating glaucomatous abnormality in peripapillary optical coherence tomography enface visualisation of the retinal nerve fibre layer reflectance." Ophthalmic and Physiological Optics 38, no. 4 (March 30, 2018): 376–88. http://dx.doi.org/10.1111/opo.12449.
Südmeyer, T., J. Aus der Au, R. Paschotta, U. Keller, P. G. R. Smith, G. W. Ross, and D. C. Hanna. "Novel ultrafast parametric systems: high repetition rate single-pass OPG and fibre-feedback OPO." Journal of Physics D: Applied Physics 34, no. 16 (August 7, 2001): 2433–39. http://dx.doi.org/10.1088/0022-3727/34/16/307.
Ashimatey, Bright S., Brett J. King, and William H. Swanson. "Functional characteristics of glaucoma related arcuate defects seen on OCT en face visualisation of the retinal nerve fibre layer." Ophthalmic and Physiological Optics 41, no. 2 (January 25, 2021): 437–46. http://dx.doi.org/10.1111/opo.12780.
Cheloni, Riccardo, and Jonathan Denniss. "Depth‐resolved variations in visibility of retinal nerve fibre bundles across the retina in enface OCT images of healthy eyes." Ophthalmic and Physiological Optics 41, no. 1 (November 4, 2020): 179–91. http://dx.doi.org/10.1111/opo.12756.
Grzegorczyk, Adrian, and Marcin Mamajek. "A 70 W thulium-doped all-fiber laser operating at 1940 nm." Photonics Letters of Poland 11, no. 3 (September 30, 2019): 81. http://dx.doi.org/10.4302/plp.v11i3.928.
Gspann, Thurid S., Nicola Montinaro, and Alan H. Windle. "CNT fibres - yarns between the extremes." MRS Proceedings 1752 (2015): 117–23. http://dx.doi.org/10.1557/opl.2015.251.
Teixeira, Flavia, Bruna Aparecida dos Santos, Graziela Nunes, Jaqueline Machado Soares, Luane Aparecida do Amaral, Gabriel Henrique Oliveira de Souza, Juliano Tadeu Vilela de Resende, et al. "Addition of Orange Peel in Orange Jam: Evaluation of Sensory, Physicochemical, and Nutritional Characteristics." Molecules 25, no. 7 (April 4, 2020): 1670. http://dx.doi.org/10.3390/molecules25071670.
Borshchev, V. Ya, and Yu A. Apporotova. "Organization of Solid Waste Management at an Industrial Company." Voprosy sovremennoj nauki i praktiki. Universitet imeni V.I. Vernadskogo, no. 3(81) (2021): 007–13. http://dx.doi.org/10.17277/voprosy.2021.03.pp.007-013.
Çayıroğlu, H., G. Filik, İ. Coşkun, A. Gül Filik, H. Çayan, and A. Şahin. "Spraying opened sugar beet pulp silage with oregano essential oil helps to sustain quality and stability." South African Journal of Animal Science 50, no. 1 (April 16, 2020): 9–16. http://dx.doi.org/10.4314/sajas.v50i1.2.
Дисертації з теми "OPO Fibre":
Ghawas, Muhammad. "Sources picosecondes et femtosecondes à base de fibre dopées Ytterbium et applications." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0463.
Ultrashort laser pulses in both industrial and research applications progressively rely on fiber laser technology, guided by its intrinsic benefits, for instance, stability, compact nature, excellent beam quality, robustness, and easy operation. In this work, a detailed study has been done to investigate picosecond fiber laser working in an all-normal-dispersion (ANDi) regime for the application of parametric generation in photonic crystal fiber. In summary, we have developed a high-power fiber laser source delivering picosecond pulses with tunability both in central wavelength and spectral width. It incorporates a combination of a large-mode-area rod-type ytterbium fiber, a slit, and a transmission grating inside the ring laser cavity configuration. At the central wavelength of ∼ 1030 nm and with a repetition of 78 MHz, this laser delivers picosecond pulses with an average power of up to 25 W. The pulse duration can be continuously adjusted from ∼ 1.8 ps to ∼ 4.5 ps and pulse energy from ∼ 320 nJ and ∼ 225 nJ, respectively. Additionally, we have also demonstrated that the central wavelength of the laser pulse can be finely tuned from ∼ 1010 nm to ∼ 1060 nm while keeping the pulse energy above ∼ 150 nJ. We have also proposed a numerical model to account for the ensemble of our experimental data and the simulations are in good agreement with the experimental data. The output of this fiber oscillator is propagated through the photonic crystal fiber for the parametric generation of the signal (higher frequencies than the pump) and idler (lower frequencies than the pump). The fiber OPO singly-resonant cavity was built in such a way that only signal wavelengths are allowed to propagate through it. The conversion efficiency for the signal was close to 20 % in the fiber OPO. Based on the dispersion profile of the photonic crystal fiber and our homebuilt tunable pump laser, the signal wavelength (resp. idler) was tuned from ∼ 770 nm to ∼ 1000 nm (∼ 1130 nm to ∼ 1590nm) for the corresponding pump wavelengths of ∼ 1024 nm to ∼ 1059 nm
Brieussel, Alexandre. "Mini squeezers towards integrated systems." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066104/document.
Squeezed states of light are quantum states that can be used in numerous protocols for quantum computation and quantum communication. Their generation in labora- tories has been investigated before, but they still lack compactness and practicality to easily integrate them into larger experiments. This thesis considers two experiments: one conducted in France, the miniOPO; and one conducted in Australia, the SquOPO. Both are new designs of compact sources of squeezed states of light towards an integrated system. The miniOPO is a linear cavity of 5mm length between the end of a fiber and a curved mirror with a PPKTP crystal of 1mm inside it. The squeezing generated in this cavity is coupled into the fiber to be able to be brought to a measurement device (homodyne) or to a larger experiment. The cavity is resonant for the squeezed light and the pump light, and locked in frequency using self-locking effects due to absorption of the pump in the crystal. The double resonance is achieved by changing the temperature of the crystal. Two different fibers have been tested in this experiment, a standard single-mode fiber and a photonic large core single-mode fiber. The squeezing obtained is still quite low (0.5dB with the standard fiber and 0.9dB for the photonic fiber) but a number of ameliorations are investigated to increase these levels in the future. The SqOPO is a monolithic square cavity made in a Lithium Niobate crystal using four total internal reflections on the four faces of the square to define an optical mode for the squeezed mode and the pump mode. The light is coupled in the resonator using frustrated internal reflection with prisms. The distance between the prisms and the resonator defined the coupling of the light, which allows us to control the finesse of the light in the resonator and by using birefringent prisms it is possible to tune independently the two frequencies in the resonator to achieve an optimal regime. The frequency of the light is locked using absorption of the pump light in the resonator to achieve self-locking, and double resonance is controlled by tuning the temperature of the crystal. We demonstrated 2.6dB of vacuum squeezing with this system. Once again, the amount of squeezing is low, but ameliorations that could be implemented in the future are discussed
Le, Méhauté Simon. "Étude et réalisation d'un lidar dial cohérent fibré à 1.65 µm pour la mesure simultanée de la vitesse du vent et de la concentration de méthane." Thesis, Littoral, 2020. http://www.theses.fr/2020DUNK0555.
Especially in the oil and gas industry, methane leaks threaten both safety and environment. The real-time monitoring of such plumes could prevent potential human or ecological disasters. In this context, one part of NAOMI project, involving TOTAL and ONERA, aims to develop remote sensing tools capable of locating (with a spatial resolution of 100 m) and characterize major methane leaks from a safety distance (1 km) on the field. To meet these specifications, the present work describes the study, design and performances assessments of a fiber lidar emitting in the near infrared (1.65 µm) : VEGA ("VEnt et GAz", French for "wind and gaz"). The choice of a coherent detection scheme allows to consider a dual-function system, able to simultaneously measure wind speed with Doppler shift (useful to assess plume dynamic) and methane concentration with the DIAL technique. In the lab, integrated-path measurements (target at 2.2 km) have shown, a first to our knowledge with a coherent lidar, VEGA's sensibility to methane. The accuracy of ambient level measurements (1.95 ± 0.26 ppm for 1 s averaging) is seen to be satisfying for the target application (involving much higher concentration). During a field campaign in 2018 (Lacq, France), the lidar has shown a good thermo-mechanical behaviour, justifying the choice of an all-fibered architecture. The use of several measurement procedures (simple, several laser lines of sight, several wavelengths) allowed VAGA to identify controlled methane leaks at 200 m (30 m resolution) in a wide range of flow rates (from 0.1 to 300 g.s-¹. During the campaign, the observed statistical errors, in the ±10 to 100ppm range for 1 s averaging, are in good agreement with theoretical models. Assessing these errors at greater distances shows, nonetheless, a need to improve the lidar (through mentioned improvement tracks) to reach an adequate precision at 1 km. Eventually, the basis for autonomous flow rate estimation, combining both wind and gas data, had been presented
Rosolem, João Batista. "Amplificadores ópticos de dupla passagem incorporando fibras compensadoras de dispersão." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-31102005-125254/.
Double pass erbium doped fiber amplifiers (DP-EDFA) with an embedded dispersion compensation fiber are studied in this work. DP-EDFA is a cost-effective alternative for optical amplifiers, yet preserving good optical performance, mainly for use in metropolitan networks. Due to its double pass circuit, others functions beyond amplification can be inserted within the amplification circuit, increasing its capabilities and decreasing the involved cost. Considering that dispersion compensation is very critical for high-speed DWDM systems operating with standard single mode fiber, a timely topic of investigation concerns the embedding of the high insertion loss DCFs (dispersion compensating fibers) into optical amplifier configurations. Experimental studies are conducted first showing the advantages and impairments associated with DP-EDFAs circuits using DCFs. Next, a DP-EDFA proposed in this work is characterized in terms of gain and noise figure for several applications in multichannel and multiband network topologies. Systemic characterization in terms of bit error rate is also conducted, evaluating the performance of the proposed DP-EDFA using DCF
Amiard, Hudebine Gabriel. "Développement de sources lasers nanosecondes, picosecondes et femtosecondes et applications." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0024/document.
This two-part thesis focuses on the development of nano and picosecond laser sources and their applications. The first part presents the study, and the realization of a nanosecond laser amplifier chain for the ignition of turboshaft engines. After the repport of the performances and the evolution of this amplifier chain will be presented the results of the tests carried out on a combustion chamber on a test bench at ONERA under low temperatures and low pressures conditions. The second part of this thesis deals with the development of an optical parametric oscillator (OPO) in order to tune in the infrared the wavelength of a pulsed picosecond or femtosecond laser at high cadency and high average power. After presenting the OPO cavity and its performance, we will detail the ability of this OPO to generate compressed femtosecond pulses from pump chirped pulses
Michel, David Daniel. "Linear-cavity tunable fibre lasers employing an Opto-VLSI processor and a MEMS-based device." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2012. https://ro.ecu.edu.au/theses/520.
Bouyge, David. "Systèmes lasers impulsionnels compacts et dispositifs hyperfréquences accordables basés sur l'intégration de composants MEMS." Limoges, 2007. https://aurore.unilim.fr/theses/nxfile/default/ac1d8e2a-01a5-4522-a2a7-f571790878dc/blobholder:0/2007LIMO4054.pdf.
In spite of the large interest provoked by the integration of Micro-Opto-Electro-Mechanical-System (MOEMS) in optic systems, not enough experimentation concerning their capacity to produce short optic impulsions is developed. It is therefore in this direction that we orientated our jobs. First, this manuscript raises the state of art on MOEMS micro-mirrors and then introduces various kinds of pulsed laser systems regimes. The development of MOEMS is displayed across stages of conception, optimization of technology and characterization. We demonstrate a simple technique to produce active Q-switching in various types of fiber amplifiers by active integration MOEMS. We present the realization of a multiwavelength laser system which exploits the achromaticity of micro-mirrors for the generation of tunable radiations in the visible spectre. Finally, we study the development of tunable multipole reject band filters
Audo, Frédéric. "Opto-alimentation et transmission de données par fibre optique pour les observatoires de fond de mer." Phd thesis, Université de Bretagne occidentale - Brest, 2012. http://tel.archives-ouvertes.fr/tel-00782502.
Weeda, Jocelyn R. "Cultivating the Fire With(In): Teacher's Resistance in an Age of Corporate Reform." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1407193226.
Hallak, Elwan Hamza. "Systèmes optiques dédiés à la 5° génération de réseaux sans fils (5G)." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT047/document.
This thesis is for the development of future devices, systems and networks supporting the 5th Generation (5G) high-speed wireless internet. The demand for very high bit rate requires a sufficient large bandwidth, and therefore Millimeter-Wave (mm-wave) frequency band has a lot of interest. Several number of technologies will need to converge, co-exist and interoperate, and most importantly, cooperate, if this vision is to be efficiently and cost-effectively realized. The main concept within this next 5G is the integration of optical fiber networks and radio networks through Radio-over-Fiber (RoF) technology at mm-wave frequencies, to provide high-bandwidth front/backhaul services and enable scalable and manageable networks without a highly complex interface structure and multiple overlaid protocols.In this thesis, the mm-wave RoF communication systems are theoretically studied and experimentally demonstrated to investigate the system impairments. The work presented in this thesis is focused on optical noise represented by phase and intensity noise induced by optical source and chromatic dispersion introduced by optical fiber. The optical noise is analyzed and measured for different optical generation techniques. Two different down-conversion stages, mixer and envelope detector, are applied for signal processing and to decorrelate phase and intensity noise. We would like to highlight that this study and the model can be applicable toany kind of optical heterodyne generation system and any frequency range. The correlation among optical modes in optical frequency comb is examined to show the impact of chromatic dispersion. This thesis also exhibits the mm-wave power distribution over fiber span and how the chromatic dispersion effect on the RoF network is modified by varying dispersion parameters. Then, this thesis demonstrates how the optical phase decorrelation induced by chromatic dispersion results in mode partition noise at mm-wave RoF communication networks.When transmitting some types of data over the system, the results demonstrate the impact of optical noise and chromatic dispersion on the signal quality. The simulation results are presented and are in very good agreement with experimental results. The error vector magnitudethrough online process shows the impact of the system impairments on the system performance. The data rate and system evolution are compliance with communication standards at mm-wave
Книги з теми "OPO Fibre":
Zeller, Ludwig. The eye on fire: Poems, September 1998-March 1999 = Imágenes en el ojo llameante : septiembre 1998-marzo 1999. Victoria, B.C: Ekstasis Editions, 2007.
W, Smith D., ed. Optical network technology. London: Chapman & Hall, 1995.
Saleh, Bahaa E. A. Fundamentals of photonics. 2nd ed. Hoboken, N.J: Wiley Interscience, 2007.
Ramaswami, Rajiv. Optical networks: A practical perspective. 2nd ed. San Francisco: Morgan Kaufmann Publishers, 2002.
Translator, Ludwig Zeller; A. F. Moritz;. The Eye on Fire (Imagenes en el ojo llameante. Ekstasis Editions, 2007.
Steigmann, David J. Fiber symmetry. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198567783.003.0005.
Gowar, John. Optical Communication Systems (Optoelectronics). 2nd ed. Prentice Hall, 1993.
Gowar, John. Optical Communication Systems (Optoelectronics). Prentice Hall, 1993.
Cheng, Russell. Embedded Distributions: Two Numerical Examples. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198505044.003.0007.
Solymar, Laszlo. Getting the Message. 2nd ed. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198863007.001.0001.
Частини книг з теми "OPO Fibre":
Protopopov, Vladimir. "Fiber Optics." In Practical Opto-Electronics, 219–30. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04513-9_7.
Vickers, Les, Arie van Riessen, and William D. A. Rickard. "Fire Resistance of OPC and Geopolymers." In SpringerBriefs in Materials, 99–110. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-287-311-8_6.
Wu, Teng, Xiang Peng, Jingbiao Chen, and Hong Guo. "Fiber-Coupled OPM in Purely Coil-Shielded Environment." In Flexible High Performance Magnetic Field Sensors, 161–77. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05363-4_9.
Bannister, Sir Roger. "Disorders of muscle." In Brain and Bannister’s Clinical Neurology, 459–84. Oxford University PressNew York, NY, 1992. http://dx.doi.org/10.1093/oso/9780192619891.003.0021.
Vincent, Julian F. V. "Composites." In Biomechanics Materials, 57–74. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199632237.003.0004.
Solymar, Laszlo. "Optical Fibres Revisited." In Getting the Message, 295–300. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198863007.003.0018.
Solymar, Laszlo. "Optical Communications: The Beginning." In Getting the Message, 211–24. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198863007.003.0012.
Brooker, Geoffrey. "Optical fibres." In Modern Classical Optics, 311–23. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198599647.003.0014.
Hasegawa, Akira, and Yuji Kodama. "Reshaping Of Solitons And Concept Of Guiding Centre (Average) Solitons." In Solitons in Optical Communications, 110–29. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198565079.003.0007.
Schedl, Paul, and Frank Grosveld. "Domains and boundaries." In Chromatin Structure and Gene Expression, 172–96. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780199635764.003.0009.
Тези доповідей конференцій з теми "OPO Fibre":
Van der Westhuizen, Gys J., and Johan Nilsson. "All-fibre OPO system for visible wavelengths." In 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim. IEEE, 2011. http://dx.doi.org/10.1109/iqec-cleo.2011.6194084.
Date, Aditya, Sourabh Mukhopadhyay, and Prasanta K. Datta. "Stability of Passive Mode-locking of OPO with Temporal Walk Off." In International Conference on Fibre Optics and Photonics. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/photonics.2012.tpo.9.
A, Aadhi, Varun Sharma, Apurv Chaitanya Nellikka, and G. K. Samanta. "Multi GHz Repetition Rate Airy Beam Radiation In Higher-harmonic Fractional Cavity OPO." In International Conference on Fibre Optics and Photonics. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/photonics.2016.tu2d.4.
Mahnke, Peter, Martin Wirth, and Andreas Fix. "OPO resonator length stabilisation for injection seeding using fibre coupled heterodyne detection." In 2008 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2008. http://dx.doi.org/10.1109/cleo.2008.4552303.
O'Driscoll, Elizabeth J., and Malcolm A. Watson. "Design and construction of a photonic-fibre-pumped OPO for active sensor systems." In European Symposium on Optics and Photonics for Defence and Security, edited by David H. Titterton. SPIE, 2004. http://dx.doi.org/10.1117/12.578260.
Persijn, S. T., A. K. Y. Ngai, F. J. M. Harren, I. D. Lindsay, P. Gross, B. Adhimoolam, and K. J. Boller. "Fast-Scanning Fibre-Amplified Diode Laser Pumped cw OPO for Sensitive, Multi-Component Trace Gas Detection." In 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/cleoe-iqec.2007.4386078.
Reid, D. T., P. Loza-Alvarez, M. Ebrahimzadeh, W. Sibbett, H. Karlsson, and F. Laurell. "Femtosecond Pulse Compression by Second-Harmonic Generation in Aperiodically-Poled KTP." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cwh5.
Köhler, B., J. Dörring, A. Nebel, and R. Wallenstein. "Noncritically phase-matched femtosecond and picosecond CsTiOAsO4 (CTA) optical parametric oscillator." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cthn2.
Südmeyer, T., J. Au Aus der, R. Paschotta, U. Keller, P. G. R. Smith, G. W. Ross, and D. C. Hanna. "Femtosecond fiber-feedback OPO." In Advanced Solid State Lasers. Washington, D.C.: OSA, 2001. http://dx.doi.org/10.1364/assl.2001.mf6.
Jin, Yan, Jizhao Zang, Travis Briles, David Carlson, and Scott Papp. "Parametric Oscillators and Soliton Combs in Bandgap-detuned Nanoresonators." In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/ofc.2024.w3d.3.
Звіти організацій з теми "OPO Fibre":
Cuello, Xavier. ¿Fiebre del oro en el Ripollés (Gerona)? ILUSTRE COLEGIO OFICIAL DE GEOLOGOS, January 2017. http://dx.doi.org/10.21028/xcv.2017.01.30.
Nevøy, Anne, and Stein Erik Solbø Ohna. Spesialundervisning – bilder fra skole-Norge: En studie av spesialundervisnings dynamikk i grunnopplæringen. University of Stavanger, June 2014. http://dx.doi.org/10.31265/usps.226.
Njå, Ove, and Kirsti Russell Vastveit. Norske kommuners planlegging, gjennomføring og bruk av risiko- og sårbarhetsanalyse i forbindelse med samfunnssikkerhetsarbeidet. University of Stavanger, October 2016. http://dx.doi.org/10.31265/usps.164.
Johansson, Eva, Elisabeth Ianke Mørkeseth, Monika Röthle, Berit Tofteland, Berit Zachrisen, and Kristin Fugelsnes. Verdier i barnehagen: Mellom ideal og realiteter. University of Stavanger, March 2014. http://dx.doi.org/10.31265/usps.228.