Littérature scientifique sur le sujet « Coherent Beam Multiplexing. Spectral Multiplexing »
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Articles de revues sur le sujet "Coherent Beam Multiplexing. Spectral Multiplexing"
Feng, Y., R. Alonso-Mori, T. R. M. Barends, V. D. Blank, S. Botha, M. Chollet, D. S. Damiani et al. « Demonstration of simultaneous experiments using thin crystal multiplexing at the Linac Coherent Light Source ». Journal of Synchrotron Radiation 22, no 3 (10 avril 2015) : 626–33. http://dx.doi.org/10.1107/s1600577515003999.
Texte intégralJiang, Cheng, Hongpei Wang, Hongmei Chen, Hao Dai, Ziyang Zhang, Xiaohui Li et Zhonghui Yao. « Broadband Quantum Dot Superluminescent Diode with Simultaneous Three-State Emission ». Nanomaterials 12, no 9 (22 avril 2022) : 1431. http://dx.doi.org/10.3390/nano12091431.
Texte intégralZhang, Chenghong, Fangrui Qu, Peiwen Ou, Haoqi Sun, Shi He et Bo Fu. « Recent Advances and Outlook in Single-Cavity Dual Comb Lasers ». Photonics 10, no 2 (18 février 2023) : 221. http://dx.doi.org/10.3390/photonics10020221.
Texte intégralWang, Fanggang, et Xiaodong Wang. « Coherent Optical DFT-Spread OFDM ». Advances in Optical Technologies 2011 (31 mars 2011) : 1–4. http://dx.doi.org/10.1155/2011/689289.
Texte intégralDong, Siyuan, Radhika Shiradkar, Pariksheet Nanda et Guoan Zheng. « Spectral multiplexing and coherent-state decomposition in Fourier ptychographic imaging ». Biomedical Optics Express 5, no 6 (9 mai 2014) : 1757. http://dx.doi.org/10.1364/boe.5.001757.
Texte intégralBoutet, Sébastien, Lutz Foucar, Thomas R. M. Barends, Sabine Botha, R. Bruce Doak, Jason E. Koglin, Marc Messerschmidt et al. « Characterization and use of the spent beam for serial operation of LCLS ». Journal of Synchrotron Radiation 22, no 3 (11 avril 2015) : 634–43. http://dx.doi.org/10.1107/s1600577515004002.
Texte intégralWipfler, Alexander, Tiago Buckup et Marcus Motzkus. « Multiplexing single-beam coherent anti-stokes Raman spectroscopy with heterodyne detection ». Applied Physics Letters 100, no 7 (13 février 2012) : 071102. http://dx.doi.org/10.1063/1.3680209.
Texte intégralKadhim, Muthanna Ali, Ali Yousif Fattah et Atheer Alaa Sabri. « Spectral efficiency and performance improvement of coherent optical transmission system ». Indonesian Journal of Electrical Engineering and Computer Science 27, no 1 (1 juillet 2022) : 290. http://dx.doi.org/10.11591/ijeecs.v27.i1.pp290-300.
Texte intégralYu, Tian-You, Marko B. Orescanin, Christopher D. Curtis, Dusan S. Zrnić et Douglas E. Forsyth. « Beam Multiplexing Using the Phased-Array Weather Radar ». Journal of Atmospheric and Oceanic Technology 24, no 4 (1 avril 2007) : 616–26. http://dx.doi.org/10.1175/jtech2052.1.
Texte intégralMYARA, M., P. SIGNORET, J. P. TOURRENC, B. ORSAL et J. JACQUET. « 1/f NOISE IN DBR TUNABLE LASERS ». Fluctuation and Noise Letters 06, no 01 (mars 2006) : L35—L43. http://dx.doi.org/10.1142/s0219477506003124.
Texte intégralThèses sur le sujet "Coherent Beam Multiplexing. Spectral Multiplexing"
Carvalho, Luis Henrique Hecker de 1988. « Avaliação experimental da transmissão óptica em altas taxas de supercanais com diferentes técnicas de multiplexação de subportadoras : Experimental evaluation of high-speed optical transmission of superchannels formed by different subcarrier multiplexing techniques ». [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261925.
Texte intégralDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
Made available in DSpace on 2018-09-27T13:36:17Z (GMT). No. of bitstreams: 1 Carvalho_LuisHenriqueHeckerde_M.pdf: 8092940 bytes, checksum: da29699f8638d37de27fc0743c89a013 (MD5) Previous issue date: 2014
Resumo: Uma das alternativas para os sistemas de transmissão óptica de próxima geração é o uso de múltiplos subcanais ópticos densamente multiplexados em frequência (supercanais) com alta eficiência espectral. Supercanais ópticos empregam o processamento paralelo de sinais para alcançar taxas de transmissão além dos limites da eletrônica. Atualmente, as técnicas CO-OFDM e Nyquist WDM são vistas como as principais para a implementação de supercanais ópticos. Neste trabalho, estudam-se abordagens para aumentar a capacidade de transmissão dos sistemas ópticos por meio da realização de supercanais. A implementação em laboratório, análise de desempenho e comparativo entre as técnicas CO-OFDM e Nyquist WDM são realizadas para sistemas operando a 400 Gb/s e 1 Tb/s por canal, com modulação DP-16QAM e eficiências espectrais que chegam a 6 b/s/Hz e acima. Os principais desafios e soluções para a implementação de sistemas de transmissão óptica de próxima geração baseados em supercanais são identificados
Abstract: One of the options for the next generation of optical transmission systems is the use of multiple optical subchannels densely multiplexed in frequency (superchannels) with high spectral efficiency. Optical superchannels employ parallel signal processing to achieve transmission rates beyond the limits of electronics. Currently, CO-OFDM and Nyquist WDM are seen as the main techniques to the implementation of optical superchannels. In this work, different ways to increase the capacity of the current optical systems by the realization of superchannels are studied. The experimental implementation, performance analysis, and comparison between CO-OFDM and Nyquist WDM techniques are performed for systems operating at 400 Gb/s and 1 Tb/s per-channel with DP-16QAM modulation and spectral efficiencies of 6 b/s/Hz and beyond. The main challenges and solutions for the implementation of next generation optical transmission systems based on superchannels are identified
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica
Shahpari, Ali. « Next generation optical access networks : technologies and economics ». Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14857.
Texte intégralThe work presented herein, studies Next Generation Optical Access Networks (NG-OAN) economically (e.g. energy consumption) and technologically (e.g. rate, reach and dedicated/shared bandwidth). The work is divided into four main topics: energy efficiency in optical access architectures, novel spectrally efficient Long-Reach Passive Optical Networks (LR-PON), crosstalk impacts in heterogeneous and homogenous access networks and hybrid optical wireless transmissions. We investigate the impact of user profiles, optical distribution network topologies and equipment characteristics on resource sharing and power consumption in LR-PON. To have a clear vision on the energy consumption evolution of each part of NG-OAN, a model is proposed to evaluate the energy efficiency of optical access technologies. A spectrally efficient bidirectional Ultra-Dense Wavelength Division Multiplexing (UDWDM) PON architecture is developed using Nyquist shaped 16-ary quadrature amplitude modulation, offering up to 10 Gb/s service capabilities per user or wavelength. Performance of this system in terms of receiver sensitivity and nonlinear tolerance under different network transmission capacity conditions are experimentally optimized. In bi-directional transmis-sion, using frequency up/down-shifting of Nyquist pulse shaped signal from optical carrier, a full bandwidth allocation and easy maintenance of UDWDM networks as well as reduction of Rayleigh back-scattering are achieved. Moreover, self-homodyne detection is used to relax the laser linewidth requirement and digital signal processing complexity at the optical network unit. Simplified numerical model to estimate the impact of Raman crosstalk of multi-system next generation PONs in video overlay is proposed. Coexistence of considered G.98X ITU-T series and coherent multi-wavelength systems is considered and assessed. Additionally, the performances of bidirectional hybrid optical wireless coherent PONs over different optical distribution network power budgets and hybrid splitting ratios are evaluated.
O trabalho aqui apresentado estuda redes óticas de acesso de próxima geração (NG-OAN) nas vertentes económica (consumo de energia) e tecnológica (taxa, alcance e largura de banda dedicada/partilhada). O trabalho está dividido em quatro grandes temas de investigação: a eficiência energética em arquiteturas de acesso ótico, as redes óticas passivas de longo alcance (LR-PON) com nova eficiência espetral, o impacto da diafonia em redes de acesso heterogéneas e homogéneas e as transmissões ópticas híbridas com tecnologias sem fio. Investiga-se o impacto dos perfis dos utilizadores, as tipologias da rede de distribuição ótica, as características do equipamento de partilha de recursos e o consumo de energia em LR-PON. Para se ter uma visão clara sobre o consumo de energia de cada parte das NG-OAN, é proposto um modelo para avaliar a eficiência energética das tecnologias de acesso óticas. Desenvolve-se uma arquitetura PON bi-direcional com elevada eficiência espetral, recorrendo a multiplexagem por divisão de comprimento de onda ultra-densa (UDWDM), modulação de amplitude em quadratura com formato de impulso de Nyquist, oferecendo até 10 Gb/s por utilizador/comprimento de onda. O desempenho deste sistema em termos de sensibilidade do recetor e da tolerância à resposta não linear do canal de comunicação, sob diferentes condições de transmissão, é avaliado experimentalm-ente. Em transmissão bi-direcional, utilizando desvio de frequência (cima/baixo) do impulso com formato de Nyquist relativo à portadora ótica conseguiu-se uma alocação de largura de banda completa e uma manutenção mais simplificada de redes UDWDM, bem como a redução do espalhamento de Rayleigh. Além disso, a deteção auto-homodina é usada para relaxar o requisito de largura de linha do laser e a complexidade do processamento digital de sinal nas unidades da rede ótica. Propõe-se um modelo numérico simplificado para estimar o impacto da diafonia de Raman em sistemas PON de próxima geração, com sobreposição do sinal de vídeo. É analisada a coexistência da série G.98X ITU-T e são considerados e avaliados sistemas coerentes multi-comprimento de onda. Adicionalmente avaliam-se os desempenhos de PONs bi-direcionais híbridas, considerando tecnologia coerente e propagação por espaço livre, para diferentes balanços de potência e taxas de repartição na rede ótica de distribuição.
Fernandez, de Jauregui Ruiz Ivan. « Advanced modulation formats and nonlinear mitigation for spectral efficient optical transmission systems ». Thesis, Evry, Institut national des télécommunications, 2018. http://www.theses.fr/2018TELE0009/document.
Texte intégralGlobal data traffic is expected to reach up to 4.3 ZB per year by 2020. With the majority of the global communications being transported on submarine point-to-point fiber-optic systems, different cutting-edge technologies have been under research to cope with this unprecedented traffic growth. Continuous advances in high-speed integrated circuits have allowed the use of advanced modulation formats and digital signal processing (DSP) techniques to maximize the transmission spectral efficiency. With mitigation of fiber linear effects efficiently carried out by DSP with relative low-complexity, the capacity of modern fiber optic systems rests limited by fiber nonlinearities. To this extent, in the first part of this work, the performance and achievable benefits of low-complexity DSP techniques aiming to mitigate fiber Kerr nonlinear effects are investigated. Besides nonlinear compensation techniques, the use of multi-level modulation formats beyond 16QAM and high symbol rate channels have gained momentum to increase the system spectral efficiency. One of the major breakthroughs in the recent years, has been the introduction of QAM-based probabilistic constellation shaping (PCS-QAM), which has proven to outperform regular QAM formats. In this sense, in the second part of this work, the practical achievable rate increase brought by PCS-QAM for transoceanic distances is investigated. A theoretical and experimental comparison with other high-capacity formats is performed, and the design of a PCS-QAM for trans-Pacific distances is addressed. Finally, in the last section, several transmission records using the two above techniques are reported
Chapitres de livres sur le sujet "Coherent Beam Multiplexing. Spectral Multiplexing"
Li, An, Di Che, Qian Hu, Xi Chen et William Shieh. « Spectrally Efficient Multiplexing - OFDM ». Dans Enabling Technologies for High Spectral-Efficiency Coherent Optical Communication Networks, 157–200. Hoboken, NJ, USA : John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119078289.ch5.
Texte intégralBosco, Gabriella. « Spectrally Efficient Multiplexing : NYQUIST-WDM ». Dans Enabling Technologies for High Spectral-Efficiency Coherent Optical Communication Networks, 123–56. Hoboken, NJ, USA : John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119078289.ch4.
Texte intégralRyf, Roland, et Nicolas K. Fontaine. « Space-Division Multiplexing and MIMO Processing ». Dans Enabling Technologies for High Spectral-Efficiency Coherent Optical Communication Networks, 547–608. Hoboken, NJ, USA : John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119078289.ch16.
Texte intégralActes de conférences sur le sujet "Coherent Beam Multiplexing. Spectral Multiplexing"
Chao, T. H., et M. Chen. « Large capacity optical correlator by wavelength-angle multiplexing ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.the5.
Texte intégralMoharam, M. G. « Angular selectivity of multiplexed holographic gratings ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.tub8.
Texte intégralEhbets, Peter, Michel Poirier, Sylviane Lelièvre, Collin Shu et Nadia Capolla. « Fabrication method for phase mask with spatially variable diffraction efficiency ». Dans Optical Interference Coatings. Washington, D.C. : Optica Publishing Group, 1997. http://dx.doi.org/10.1364/oic.1998.mc.8.
Texte intégralBlau, K. H., M. A. Bobb, T. L. Miller et G. R. Colliss. « Spectral Multiplexing Beam Combiner For Diode Lasers ». Dans OE LASE'87 and EO Imaging Symp (January 1987, Los Angeles), sous la direction de David W. Kuntz. SPIE, 1987. http://dx.doi.org/10.1117/12.939734.
Texte intégralTsuda, Hiroyuki, Hirokazu Takenouchi, Tetsuyoshi Ishii, Katsunari Okamoto, Takashi Goh, Kenji Sato, Akira Hirano, Takashi Kurokawa et Chikara Amano. « Photonic Spectral EncoderIDecoder Using an Arrayed-Waveguide Grating for Coherent Optical Code Division Multiplexing ». Dans Wavelength Division Multiplexing Components. Washington, D.C. : OSA, 1999. http://dx.doi.org/10.1364/wdm.1999.206.
Texte intégralBrooks, Nathan J., Bin Wang, Charles Bevis, Iona Binnie, Michael Tanksalvala, Yuka Esashi, Joshua L. Knobloch, Henry C. Kapteyn et Margaret M. Murnane. « Temporal and Spectral Multiplexing for High-harmonic Multibeam Ptychography in the Extreme Ultraviolet ». Dans CLEO : Science and Innovations. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_si.2022.sth2e.3.
Texte intégralChandra, Suresh. « Laser beam combination using stimulated Brillouin scattering ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.mf10.
Texte intégralGunning, F. C. Garcia, T. Healy, X. Yang et A. D. Ellis. « 0.6Tbit/s Capacity and 2bit/s/Hz Spectral Efficiency at 42.6Gsymbol/s Using a Single DFB Laser with NRZ Coherent WDM and Polarisation Multiplexing ». Dans 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/cleoe-iqec.2007.4386455.
Texte intégralJenkins, B. K., A. R. Tanguay, S. Piazzolla, G. C. Petrisor et P. Asthana. « Photonic neural-network architecture based on incoherent-coherent holographic interconnections ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.mvv2.
Texte intégralVakhshoori, D., J. Walker, S. Wang, J. S. Smith, C. E. Soccolich et M. N. Islam. « Integrable Optical Correlator ; its Temporal Resolution, Spectral Response, and Power Sensitivity ». Dans Nonlinear Guided-Wave Phenomena. Washington, D.C. : Optica Publishing Group, 1989. http://dx.doi.org/10.1364/nlgwp.1989.thb7.
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