Thematische Bibliographien / Spatial-division multiplexing SDM

Auswahl der wissenschaftlichen Literatur zum Thema „Spatial-division multiplexing SDM“

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Veröffentlicht am 25. Mai 2024

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Zeitschriftenartikel zum Thema "Spatial-division multiplexing SDM"

Dai, Daoxin, und John E. Bowers. „Silicon-based on-chip multiplexing technologies and devices for Peta-bit optical interconnects“. Nanophotonics 3, Nr. 4-5 (01.08.2014): 283–311. http://dx.doi.org/10.1515/nanoph-2013-0021.

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AbstractAn effective solution to enhance the capacity of an optical-interconnect link is utilizing advanced multiplexing technologies, like wavelength-division-multiplexing (WDM), polarization-division multiplexing (PDM), spatial-division multiplexing (SDM), bi-directional multiplexing, etc. On-chip (de)multiplexers are necessary as key components for realizing these multiplexing systems and they are desired to have small footprints due to the limited physical space for on-chip optical interconnects. As silicon photonics has provided a very attractive platform to build ultrasmall photonic integrated devices with CMOS-compatible processes, in this paper we focus on the discussion of silicon-based (de)multiplexers, including WDM filters, PDM devices, and SDM devices. The demand of devices to realize a hybrid multiplexing technology (combining WDM, PDM and SDM) as well as a bidirectional multiplexing technologies are also discussed to achieve Peta-bit optical interconnects.

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Hu, Yuhang, Zihao Yang, Nuo Chen, Hanwen Hu, Bowen Zhang, Haofan Yang, Xinda Lu, Xinliang Zhang und Jing Xu. „3 × 40 Gbit/s All-Optical Logic Operation Based on Low-Loss Triple-Mode Silicon Waveguide“. Micromachines 13, Nr. 1 (07.01.2022): 90. http://dx.doi.org/10.3390/mi13010090.

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Information capacity of single-mode fiber communication systems face fundamental limitations imposed by optical nonlinearities. Spatial division multiplexing (SDM) offers a new dimension for upgrading fiber communication systems. Many enabling integrated devices, such as mode multiplexers and multimode bending with low crosstalk, have been developed. On the other hand, all-optical signal processing (AOSP) can avoid optical to electrical to optical (O–E–O) conversion, which may potentially allow for a low cost and green operation for large-scale signal processing applications. In this paper, we show that the system performance of AOSP can be pushed further by benefiting from the existing technologies developed in spatial mode multiplexing (SDM). By identifying key technologies to balance the impacts from mode-dependent loss, crosstalk and nonlinearities, three-channel 40 Gbit/s optical logic operations are demonstrated using the first three spatial modes in a single multimode waveguide. The fabricated device has a broadband four-wave mixing operation bandwidth (>20 nm) as well as high conversion efficiency (>−20 dB) for all spatial modes, showing the potential for a large-scale signal processing capacity with the combination of wavelength division multiplexing (WDM) and SDM in the future.

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Gao, Yuyang, Juhao Li, Yu Tang, Lei Shen, Xian Zhou, Chunxu Zhao, Shikui Shen, Lei Zhang, Xiongyan Tang und Zhangyuan Chen. „Real-Time Spatial-Division Multiplexing Transmission with Commercial 400 Gb/s Transponders“. Photonics 11, Nr. 3 (02.03.2024): 231. http://dx.doi.org/10.3390/photonics11030231.

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As single-mode-fiber transmission systems are reaching their capacity limits, spatial-division multiplexing (SDM) techniques have been investigated to increase the per-fiber capacity. However, the compatibility with current single-mode transponders severely hinders the near-term deployment of SDM systems. In this paper, we experimentally propose two real-time SDM transmission schemes using commercial single-mode 400 G dual-polarized 16 quadrature amplitude modulation equipment. In the first experiment, 60 km weakly coupled single-mode 7-core fiber with a pair of fan-in and fan-out devices are adopted. In the second experiment, the fiber link consists of 60 km/150 km weakly coupled few-mode fiber (FMF) and low-modal-crosstalk mode multiplexers, in which only non-degenerate LP01 and LP02 modes are utilized. In order to investigate the effect of splice on SDM fiber links, 20-roll, 3 km multicore fibers (MCFs) and FMFs are spliced and tested in the experiments. The bit error rates of all SDM experiments are all below 4.75 × 10−2 forward-error-correction threshold of the 400 G transponders. The experimental results prove that the near-term deployment of SDM systems could be accelerated by utilizing weakly coupled MCFs or non-degenerate modes of weakly coupled FMFs which are compatible with commercial single-mode transponders without any software or hardware modifications.

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Olaleye, Temitope M., Paulo A. Ribeiro und Maria Raposo. „Generation of Photon Orbital Angular Momentum and Its Application in Space Division Multiplexing“. Photonics 10, Nr. 6 (08.06.2023): 664. http://dx.doi.org/10.3390/photonics10060664.

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In the last three decades, light’s orbital angular momentum (OAM) has been of great interest because it has unique characteristics that make it sought after in many research fields, especially in optical communications. To address the exponentially increasing demands for higher data rates and capacity in optical communication systems, OAM has emerged as an additional degree of freedom for multiplexing and transmitting multiple independent data streams within a single spatial mode using the spatial division multiplexing (SDM) technology. Innumerable research findings have proven to scale up the channel capacity of communication links by a very high order of magnitude, allowing it to circumvent the reaching of optical fiber’s non-linear Shannon limit. This review paper provides a background and overview of OAM beams, covering the fundamental concepts, the various OAM generators, and the recent experimental and commercial applications of the OAM-SDM multiplexing technique in optical communications.

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Takialddin, Al Smadi. „MACHINE LEARNING APPLICATION IN INVERSE DESIGN OF FEW-MODE FIBERS“. Journal of Advanced Sciences and Engineering Technologies 7, Nr. 1 (15.02.2024): 22–35. http://dx.doi.org/10.32441/jaset.07.01.02.

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The importance of optical fiber research is increasing due to its applications in the digital world, including components, sensors, and high data rate communication. Few-mode fiber (FMF) research is regenerating due to its high data rate transmission ability. This dissertation work proposes new designs of FMFs with updated material composition and geometry to establish weakly coupled spatial division multiplexing (SDM)/mode division multiplexing (MDM) links. The next generation of communication, 5G aims to connect people and things via intelligent networks, but current network architectures struggle to handle massive data traffic. The spatial domain of the fiber is highly useful for handling this massive data traffic. This work reviews the requirements of 5G networks and how they can be handled through spatial multiplexing and mode multiplexing through a few-mode optical fiber. The article demonstrates machine learning-based inverse modeling of the triangular-ring-core few-mode fiber profile with weak coupling optimization.

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S. Luis, Ruben, Hideaki Furukawa, Georg Rademacher, Benjamin J. Puttnam und Naoya Wada. „Demonstration of an SDM Network Testbed for Joint Spatial Circuit and Packet Switching †“. Photonics 5, Nr. 3 (28.07.2018): 20. http://dx.doi.org/10.3390/photonics5030020.

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We demonstrate a spatial division multiplexing (SDM) network testbed composed of three nodes connected via 19-core multi-core fibers. Each node is capable of joint spatial circuit switching and joint packet switching to support 10 Tb/s spatial circuit super channels and 1 Tb/s line rate spatial packet super channels. The performance of the proposed hybrid network is evaluated, showing successful co-existence of both systems in the same network to provide high capacity and high granularity services. Finally, we demonstrate an optical channel selection associated with the quality of service requirements on the SDM network testbed.

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Jiang, Guozhou, und Liu Yang. „Multi-Level Phase Noise Model for CO-OFDM Spatial-Division Multiplexed Transmission“. Photonics 10, Nr. 1 (23.12.2022): 8. http://dx.doi.org/10.3390/photonics10010008.

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Spatial division multiplexed (SDM) transmission systems with coherence communication technology have become an important issue in meeting the demands for the capacity of fiber. However, research on the phase noise from lasers is mainly focused on single-channel systems or single-carrier SDM systems. In this paper, a phase noise model comprising common laser phase noise, in addition to the core phase drifts induced by the SDM, is introduced and analyzed for a coherence orthogonal frequency-division multiplexing (CO-OFDM) spatial-division multiplexed transmission (SDM) system. Based on the phase noise model, the applicability of the blind phase search algorithm and the pilot-aided phase estimation algorithm is discussed and demonstrated via simulation. The results show that these two algorithms can work well when considering combined laser linewidths with core phase drifts for CO-OFDM 7-core multi-core fiber (MCF). The results mean that with the SDM phase noise model, phase noise estimation in other cores can be transferred from one core to lower the complexity with the help of the model. This research provides a proper application of the phase noise analysis of large-capacity optical communication based on a weak-coupled MCF.

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Wang, Jiading, Sibo Chen, Qian Wu, Yiliu Tan und Maiko Shigeno. „Solving the Static Resource-Allocation Problem in SDM-EONs via a Node-Type ILP Model“. Sensors 22, Nr. 24 (11.12.2022): 9710. http://dx.doi.org/10.3390/s22249710.

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Space division multiplexing elastic optical networks (SDM-EONs) are one of the most promising network architectures that satisfy the rapidly growing traffic of the internet. However, different from traditional wavelength division multiplexing (WDM)-based networks, the problems of resource allocation become more complicated because SDM-EONs have smaller spectrum granularity and have to consider several novel network resources, such as modulation formats and spatial dimensions. In this work, we propose an integer linear programming (ILP) model without space lane change (SLC) that provides theoretically exact solutions for the problem of routing, modulation format, space, and spectrum assignment (RMSSA). Moreover, to more efficiently solve our model which is difficult to solve directly, we propose three exact algorithms based on model decomposition and evaluate their performance via simulation experiments, and we find that two of our exact algorithms can solve the model effectively in small-scale instances.

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Iyer, Sridhar, und Shree Prakash Singh. „Performance Analysis of Translucent Space Division Multiplexing Based Elastic Optical Networks“. International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems 8, Nr. 1 (12.02.2019): 8. http://dx.doi.org/10.11601/ijates.v8i1.270.

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The required upgradation of the network capacity of the single-mode fiber which is constrained by the non-linear Shannon’s limit, and the capacity provisioning needed by the future diverse Internet traffic can be resolved by the adoption of the Space Division Multiplexing (SDM) based Elastic Optical Networks (EONs) (SDM-b-EONs). In the current work, we focus on the performance analysis of a SDM-b-EON in which translucent lightpaths are routed through the spectral super-channels over the spatial single-mode fiber(s) bundle(s) links. In regard to regeneration, we investigate three scenarios which differ in their regeneration variability level in addition to the adjustment of modulation formats according to transmission route characteristics. We conduct extensive simulations considering an online traffic case and two realistic network topologies with different numbers of (i) fibers in every link, and (ii) transceivers available within SDM-b-EON. The obtained results demonstrate that when regeneration is conducted with complete flexibility and simultaneously the modulation format conversion is also permitted at every SDM-b-EON node both, largest traffic volume amounts can be provisioned, and significant SDM-b-EON performance scaling can be obtained with a corresponding increase in the utilized fibers amount.

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Lusala, Angelo Kuti, und Jean-Didier Legat. „Combining SDM-Based Circuit Switching with Packet Switching in a Router for On-Chip Networks“. International Journal of Reconfigurable Computing 2012 (2012): 1–16. http://dx.doi.org/10.1155/2012/474765.

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A Hybrid router architecture for Networks-on-Chip “NoC” is presented, it combines Spatial Division Multiplexing “SDM” based circuit switching and packet switching in order to efficiently and separately handle both streaming and best-effort traffic generated in real-time applications. Furthermore the SDM technique is combined with Time Division Multiplexing “TDM” technique in the circuit switching part in order to increase path diversity, thus improving throughput while sharing communication resources among multiple connections. Combining these two techniques allows mitigating the poor resource usage inherent to circuit switching. In this way Quality of Service “QoS” is easily provided for the streaming traffic through the circuit-switched sub-router while the packet-switched sub-router handles best-effort traffic. The proposed hybrid router architectures were synthesized, placed and routed on an FPGA. Results show that a practicable Network-on-Chip “NoC” can be built using the proposed router architectures. 7 × 7 mesh NoCs were simulated in SystemC. Simulation results show that the probability of establishing paths through the NoC increases with the number of sub-channels and has its highest value when combining SDM with TDM, thereby significantly reducing contention in the NoC.

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Dissertationen zum Thema "Spatial-division multiplexing SDM"

Amhoud, El Mehdi. „Coding techniques for space-division multiplexed optical fiber systems“. Electronic Thesis or Diss., Paris, ENST, 2017. http://www.theses.fr/2017ENST0067.

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Les deux dernières décennies ont connu une croissance exponentielle de la demande pour plus de capacité dans les réseaux optiques. Cette croissance a été principalement causée par le développement d'Internet et le trafic croissant généré par le nombre croissant des utilisateurs. La fibre optique offre plusieurs degrés de liberté pour augmenter la capacité. La fréquence, le temps, la phase, la polarisation ont déjà été utilisés pour satisfaire la demande de bande passante, ainsi le multiplexage spatial (SDM) reste le seul degré de liberté disponible pouvant être utilisé dans les systèmes optiques afin d'augmenter la capacité. Cependant, les interactions entre les différents canaux spatiaux dans le même milieu de propagation est inévitable. Ces interactions, si elles ne sont pas compensées, entraînent des dégradations qui détériorent les performances du système. À cette fin, des recherches intensives sont menées récemment afin de développer un traitement de signal avancé capable de traiter ces détériorations dans les systèmes à multiplexage spatial. Motivés par le rôle potentiel des fibres optiques multimodes (MMF) dans les futurs systèmes SDM, dans cette thèse, nous présentons des solutions de codage modernes pour réduire la diaphonie non-unitaire qui affecte les modes spatiaux dans les fibres multimodes entraînant une dégradation des performances
In a very fast pace, the last two decades have known an exponential growth in the demand for more optical network capacity, this growth was mainly caused by the built-out of the Internet and the growing traffic generated by an increasing number of users. Since frequency, time, phase, polarization have already been used to satisfy the demand for bandwidth, space-division multiplexing (SDM) remains the only available degree of freedom that can be used in optical transmission systems in order to increase the capacity. However, interactions between spatial channels in the same propagation medium is inevitable. These interactions, if not compensated, result in impairments that deteriorate the system performance. For this purpose, intensive research is being carried out in recent years in order to provide advanced signal processing capable to deal with these impairments in spatial multiplexing systems. Motivated by the potential role of multi-mode fibers (MMFs) in future SDM systems, in this thesis, we present modern coding solutions to mitigate the non-unitary crosstalk known as mode-dependent loss (MDL) that affects spatial modes of MMFs resulting in degraded system performance

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Silva, Marco Quiteres da. „Impact of physical layer impairments on SDM networks based on ROADM nodes“. Master's thesis, 2021. http://hdl.handle.net/10071/24322.

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Current transport optical networks are approaching its capacity limits, mainly due to new applications and services that require a huge amount of resources. To increase the network capacity, multiband solutions, that exploit the unused capacity of actual fibers, in particular the L-band, are being currently commercially explored. However, this strategy is assumed as a short to medium term solution. A long-term solution is to use spatial-division multiplexing (SDM) in the optical domain, which leads to the concept of SDM-based optical networks. In this work, different SDM switching architectures (spatial, spatial-wavelength, wavelength, fractional space-full wavelength) are studied and compared in terms of cost per bit, power consumption and flexibility. For the switching architectures with spatial and spatial-wavelength granularities (the architectures that have superior performance), the most relevant physical impairments (PLIs) (amplifiers noise, non-linear interference, narrowing penalty due to filtering and in-band crosstalk) are analytically studied, for a SDM reconfigurable optical add-drop multiplexer (ROADM) cascade. Furthermore, a Monte Carlo simulation is used to assess more rigorously the PLIs effects on the performance of SDM ROADMs, with spatial-wavelength switching architecture, in cascade. The main difference, regarding PLIs, between the single spatial channel ROADM architecture and the SDM ROADM architectures is the enhanced effect of in-band crosstalk. For cascaded ROADMs with 16 directions, 19 spatial channels and filtering isolation of -25 dB, the in-band crosstalk can lead to a 2 dB optical signal-to-noise ratio penalty. Due to this penalty, the signal crosses less 9 ROADMs than in a single spatial channel ROADM architecture.
As redes óticas de transporte atuais estão a aproximar-se do seu limite de capacidade devido às novas aplicações e serviços que requerem uma maior quantidade de recursos de rede. Uma possível solução de curto a médio prazo para a falta de recursos é o uso de múltiplas bandas da fibra, para além da banda C. Uma solução a longo prazo será o uso de multiplexagem com divisão no espaço (SDM) no domínio óptico. Neste trabalho são estudados, o custo por bit, consumo de energia e flexibilidade, das diferentes arquiteturas SDM (no espaço, no espaço e comprimento de onda, no comprimento de onda, fracionada no espaço e completa no comprimento de onda). Para as arquiteturas com granularidades no espaço e no espaço e comprimento de onda estuda-se analiticamente os efeitos das principais limitações do nível físico (PLIs) (ruído dos amplificadores, interferência não-linear, penalidade de filtragem e diafonia homódina), para cascatas de multiplexadores óticos de inserção/extração reconfiguráveis (ROADMs). Usa-se uma simulação Monte Carlo para calcular mais rigorosamente os efeitos das PLIs na arquitetura com granularidade no espaço e comprimento de onda. A principal diferença, em termos de PLIs, entre uma rede SDM e uma rede com um único canal espacial é o efeito da diafonia homódina. Para uma rede com 16 direções, 19 canais espaciais e isolamento dos filtros de -25 dB, a diafonia homódina causa uma penalidade na relação sinal-ruído óptica de 2 dB e o sinal atravessa menos 9 ROADMs que numa rede com apenas um canal espacial.

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Buchteile zum Thema "Spatial-division multiplexing SDM"

Rjeb, Alaaeddine, Habib Fathallah und Mohsen Machhout. „OAM Modes in Optical Fibers for Next Generation Space Division Multiplexing (SDM) Systems“. In Fiber Optics - Technology and Applications. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97773.

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Due to the renewed demand on data bandwidth imposed by the upcoming capacity crunch, optical communication (research and industry) community has oriented their effort to space division multiplexing (SDM) and particularly to mode division multiplexing (MDM). This is based on separate/independent and orthogonal spatial modes of optical fiber as data carriers along optical fiber. Orbital Angular Momentum (OAM) is one of the variants of MDM that showed promising features including the efficient enhancement of capacity transmission from Tbit to Pbit and substantial improvement of spectral efficiency up to hundreds (bs-1 Hz-1). In this chapter, we review the potentials of harnessing SDM as a promising solution for next generation global communications systems. We focus on different SDM approaches and we address specifically the MDM (different modes in optical fiber). Finally, we highlight the recent main works and achievements that have been conducted (in last decade) in OAM-MDM over optical fibers. We focus on main R&D activities incorporating specialty fibers that have been proposed, designed and demonstrating in order to handle appropriates OAM modes.

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Konferenzberichte zum Thema "Spatial-division multiplexing SDM"

Murshid, Syed, Greg Lovell, Bilas Chowdhury, Arnob Hridoy, Gurinder S. Parhar, Abhijit Chakravarty und Saud Alanzi. „Analysis of spatial domain multiplexing/space division multiplexing (SDM) based hybrid architectures operating in tandem with wavelength division multiplexing“. In SPIE Optical Engineering + Applications, herausgegeben von Alex A. Kazemi, Bernard C. Kress und Edgar A. Mendoza. SPIE, 2014. http://dx.doi.org/10.1117/12.2061148.

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Pita, Julian L., Rafael Alvarenga, Lucas Rocha, Jun Yang, Şükrü Ekin Kocabaş, Ming-Jun Li, Ivan Aldaya, Paulo Dainese und Lucas H. Gabrielli. „Silicon-on-Insulator Couplers for SDM Transmission“. In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.178.

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We present two CMOS-compatible couplers with record-high efficiency for bridging chips and fibers exploiting spatial division multiplexing. The maximum coupling efficiencies to a few-mode and a 7-core fibers were −3.0 dB and −4.3 dB, respectively.

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Zhao, Tianfeng, Feng Wen, Peng Zhang, Baojian Wu und Kun Qiu. „Noise Analysis and MIMO Equalization for a Spatial-Division Multiplexing (SDM) Transmission System“. In Asia Communications and Photonics Conference. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/acpc.2020.m4a.234.

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Lopes, Rafael, Denis Rosário, Eduardo Cerqueira und Helder Oliveira. „Mecanismo de Proteção em SDM-EON Ciente da Prioridade de Tráfego“. In Workshop em Desempenho de Sistemas Computacionais e de Comunicação. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/wperformance.2020.11102.

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With the increase in the number of devices connected to the internet, caused mainly by the rise of the internet of things paradigm, the core of the network tends to suffer from the scarcity of resources, which, in turn, causes a higher rate of connection blocking. This article proposes a algorithm for routing, spectrum and core allocation for spatial-division multiplexing elastic optical networks that uses classes of service with different levels of protection quality to increase the acceptance rate of requests, guaranteeing 100% protection against failures to higher priority flows. The results demonstrate the effectiveness of the proposed algorithm in establishing connections with high priority compared to others found in the literature.

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Murshid, Syed, Saud Alanzi, Arnob Hridoy, Greg Lovell, Gurinder Parhar, Abhijit Chakravarty und Bilas Chowdhury. „An order of magnitude improvement in optical fiber bandwidth using spatial domain multiplexing/space division multiplexing (SDM) in conjunction with orbital angular momentum (OAM)“. In SPIE Optical Engineering + Applications, herausgegeben von Alex A. Kazemi, Bernard C. Kress und Edgar A. Mendoza. SPIE, 2014. http://dx.doi.org/10.1117/12.2061122.

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Zhou, Quanwei, Yongli Zhao, Jie Zhang, Xiaosong Yu, Chuan Liu und Gang Zhang. „Multi-dimensional resource defragmentation (MDRD) based on cluster SDON controller (CSC) paradigm in spatial division multiplexing enabled elastic optical networks (SDM-EON)“. In 2016 15th International Conference on Optical Communications and Networks (ICOCN). IEEE, 2016. http://dx.doi.org/10.1109/icocn.2016.7875671.

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Ferreira, Filipe, Eric Sillekens, Robert Killey und Polina Bayvel. „Challenges in Modelling Optical Fibres for Spatial Division Multiplexing“. In 2020 IEEE Photonics Society Summer Topicals Meeting Series (SUM). IEEE, 2020. http://dx.doi.org/10.1109/sum48678.2020.9161053.

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Chen, Yung-Kuang, und Sien Chi. „Fault-locating technique for multi-staged optical distribution networks“. In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cwj3.

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Optical power splitters are extensively used in many fiber-optic distribution networks such as CATV and fiber-to-the-home systems. Techniques for locating any fiber link faults become more important after the installation of such distribution networks. However, today's optical time-domain reflectometer (OTDR) is unable to diagnose N-branched networks, e.g., N > 4, due to lack of high spatial resolution with sufficient singleway dynamic range (SDR). To overcome this problem, we propose and demonstrate a fault-locating technique for large multistaged branched networks. The requirement of ultra-wide SDR with high resolution of an OTDR to diagnose a large distribution network can be tremendously relaxed by the introduction of optical switches and the wavelength division multiplexing technique.

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