Upc fiber power optimizer mac
Navitel Rated 3 out of 5 stars. Run The Map Rated 4. OneNote Rated 4. Approximate size 2. Age rating For ages 3 and up. Installation Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices. Additional terms Terms of transaction. Seizure warnings Photosensitive seizure warning. Report this product Report this app to Microsoft Thanks for reporting your concern. Our team will review it and, if necessary, take action. Sign in to report this app to Microsoft. Report this app to Microsoft. Report this app to Microsoft Potential violation Offensive content Child exploitation Malware or virus Privacy concerns Misleading app Poor performance.
How you found the violation and any other useful info. Submit Cancel. Rated 3. To rate and review, sign in. Sign in. Showing out of 3 reviews. Filter by: All reviews All reviews Most recent. All ratings All ratings 5 stars 4 stars 3 stars 2 stars 1 star. Open in new tab. Sign me up Stay informed about special deals, the latest products, events, and more from Microsoft Store. Sign up. Uri Mahlab Non-orthogonal multiple access for long-haul elastic optical networks E.
Omiyi, D. Dahan, and U. The proposed method allows the full overlap of multiple independent and unsynchronised optical signals on the same wavelength, where different signals are coded with a block forward-error-correction FEC code and allocated different power levels. The signals are separated using the method of successive-interference-cancellation SIC at the receiver.
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This study focuses on the impact of chromatic dispersion and carrier frequency offset on the optical link performance. Ilya Polishchuk Guided modes in periodical arrays of waveguides A. Anastasiev, A. Burin, M. Gozman, I. Polishchuk, Yu. Polishchuk, and E. We study arrays made of Ag in order to be able to compare to the results obtained in Ref. Note that in Ref. The approach makes use of the multiple-scattering , based on the formally exact solution for the electromagnetic wave scattering problem by a separate infinite cylinder wave-guide . Belan, S.
Vergeles , J. Polishchuk et al. Quan Pham Van Monitoring intent for optical channel defragmentation in software-defined elastic optical networks Q. Verchere 1 , P. Layec 1 , A. Dupas 1 , F. Ilchmann 2 , L. Dembeck 2 , H. Tran-Quang 3 , and D. We propose a monitoring intent framework to facilitate the development of control functions exploiting the monitored optical parameters.
We then demonstrate an optical channel defragmentation control function deployed as an SDN application taking advantages of a centralized view of SDN controller to optimize the spectrum utilization. Danish Rafique Interplay of pulse shaping and pre-emphasis for high symbol rate coherent transmission systems D. Rafique, ADVA Optical Networking SE, Munich, Germany Digital pre-emphasis DPE in optical communications has been proposed to counteract transceiver bandwidth limitations, enabling higher symbol rate transmission with low bandwidth opto-electronic components.
However, system design trade-offs for diverse regimes of weak and strong pre-emphasis largely remain unexplored. We systematically investigate the interplay of DPE parameters for multi-component pre-emphasis, and its impact on available transmitter output power and transmission performance.
Alreesh, S. Dris, and A. We describe the structure of multi-D TCM schemes and discuss their main advantages. Numerical simulations show that multi-D TCM combined with simple hard-decision forward error correction HD-FEC codes are of practical interest, as they can provide a better trade-off between complexity and performance, compared to soft-decision SD- FEC alternatives.
Henrique Salgado Experimental evaluation of resonant tunnelling diode oscillators employing advanced modulation formats J. Tavares, L. Pessoa, and H. Ben Braham 1,2 , G. Semaan 1 , A. Niang 1 , M. Salhi 1 , A. Komarov 3 , K. Komarov 3 , and F. We have successfully obtained high energetic pulses in the microsecond range without wave breaking for any available pumping power.
Our experimental results open a new way for energy scaling in passively mode-locked fiber lasers. Svaluto Moreolo, J. Nadal, and L. Special attention will be devoted to data plane solutions with high degree of re configurability and flexibility for the optical metro network segment. Transceiver architectures based on modular design will be proposed to target grow-as-needed approach and optical domain disaggregation, identifying data plane elements that can be considered as separate management and functional entities, as well as functionalities that can be moved to software.
Our work in this direction will be presented focusing on the S-BVT features, functional identification and capabilities, taken into account the optical system and its interrelationship with other elements of the network. Turkiewicz , Institute of Telecommunications, Faculty of Electronics and Information Technology, Warsaw University of Technology, Warsaw, Poland For years the majority of the telecommunication traffic have been transmitted in the nm window.
That resulted from the minimum attenuation 0. Recently, new application areas of for the optical fibre transmission have emerged, which can be successfully by supported by other transmission windows. The paper presents analysis of the nm and nm windows and their applicability to the selected optical transmission applications in particular to the short and medium haul data interconnects.
Ricard Vilalta Zero-touch network slicing through multi-domain transport networks R. Vilalta, P. Alemany, R. Casellas, R.
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Parada, J. Bonnet, F. Vicens, and R. A Network Slice is a set of network functions, and the resources to run these network functions, forming a complete instantiated logical network, which meets certain network characteristics. In this paper, we provide an overview of operationalization and deployment of the different data and control plane technologies used for both Network Slicing and Network Virtualization, which are two key enablers of future 5G networks.
Naoya Wada High-frame-rate single-shot spectrum measurement for ultrafast optical pulses based on optical signal processing N. Wada, H. Furukawa, and J. Delgado Mendinueta National Institute of Information and Communications Technology NICT , Tokyo, Japan The pulse-by-pulse single-shot spectrum measurement for high-repetition rate optical pulses with femtosecond or picosecond pulse width is important for capturing non-repetitive and rare phenomena of substances.
Conventional optical spectrum analyzers cannot acquire the spectrum for each pulse at high-repetition rate without missing due to the low processing speed. Several high-speed optical signal processing techniques can help to acquire pulse-by-pulse single-shot spectrum. The high-speed spectrum measurement using a fiber chromatic dispersion-based time stretch dispersive Fourier Transform TS-DFT technique is a powerful tool for such measurements.
In this paper, we present a record pulse-by-pulse single-shot spectrum measurement for 1 GHz repetition-rate optical pulses with a less than pm spectral resolution based on the TS-DFT technique. Guang Wu Recent progresses in Chinese telecom and photonic Shaomin Yan and Guang Wu China Great progresses have been made over past decades on photonics, optical networks as well as telecommunications in China.
In this mini-review, recent progresses are presented from academic settings and industrial sectors with respect to research, economic development, global positioning, etc. Attention is also given to the current policies on the development of optical network in China.
Optical time-division multiplexing technique can used in this system for anti-aliasing and improve the imaging quality with low bandwidth electronics. With this TDM based anti-aliasing technique, we can acquire a large amount of image information by using relatively low-sampling-rate electronic digitizer. Numerical analysis shows that the image quality can be improved by 4. Experimental demonstration of line-scan imaging system, which has the scan rate of Zukerman City University of Hong Kong, China Significant research efforts have been directed in recent years towards the development of elastic optical networks EONs to improve the efficiency of future networks beyond current WDM networks.
In addition, multicast services, including live internet video delivery and inter-datacenter database synchronization, are gaining popularity, and usually generate large volume traffic. We focus on routing and spectrum allocation for the multicast traffic in EONs considering distance-adaptive transmission. Existing studies focus on using light-tree and lightpath solutions for provision of multicast services in optical network both WDM and EONs , while there were very few publications on using light-trail in EONs. In this paper, we compare the effectiveness, in term of spectrum and transmitter usage, of light tree, lightpath and light trail approaches in provisioning of multicast services.
We also evaluate, in EONs, the benefit of having distance-adaptive transmission for these schemes. Numerical results based on MILP illustrate their performances for a range of cases. Adrian Farrel Recent developments in service function chaining SFC and network slicing in backhaul and metro networks in support of 5G A. Nathan Gomes Optical fronthaul options for meeting 5G requirements N.
Gomes and P. Assimakopoulos Communications Research Group, University of Kent, Canterbury, UK New functional splits for the 5G Radio Access Network have been identified so that fronthaul will no longer need to transport sampled time-domain waveforms. However, the different functional split points place differing demands on the fronthaul transport, while also posing different constraints to 5G techniques, such as massive MIMO.
According to these conflicting demands, it is likely that in many cases, more than one split point may be needed in the same radio access network. However, the vulnerability of OFDM-PON to link failure cumbers its applicability in 5G backhaul, which is expected to offer enhanced network resilience.
Although link duplication has evolved as a common practice for the protection of PON against link failure, the compromise between expenditure for backup link and QoS guarantee remains an open issue. On basis of the subcarrier exchange mechanism, we derive an optimal subcarriers allocation and backup fiber deployment mathematically using integral linear programming.
Roberto Sabella Photonic systems and devices for 5G R. Sabella 1 and L. At the same time, innovative system techniques contribute to support the fast evolution of network segments over different geographical scales driven by new concepts and applications needed in a connected world. The paper will address key aspects, constraints, limitations and perspectives in a single mindful vision. Montero, F. Agraz, A. Optical networks control and resource orchestration is set to potentially turn into software-defined approaches in order to address such requirements.
As a result, there rises a need for an architectural scheme capable of supporting the different types of services defined for 5G verticals. We present in this paper an architecture enabling end-to-end E2E provisioning and monitoring of such 5G services over optical network segments. In particular, the scenario considers the coordination of various optical enabled network segments by a higher level E2E Orchestrator, which provides of network slice deployment and is able to guarantee agreed levels of Quality of Experience QoE. Moreover, we discuss an example of 5G service provisioning using the proposed architecture to demonstrate its behaviour in front of different network events.
Tafur Monroy 1 , T. Raddo 1 , S. Rommel 1 , C. Okonkwo 1 , N. Calabretta 1 , U. Johannsen 2 , G. Dubbelman 2 , J. Scholtes 2 , and B. This paper presents the ongoing build up and deployment of the Eindhoven based 5G-Brainport testbed towards an open environment for validation and test of end-to-end applications benefitting from the 5G KPIs. Luca Valcarenghi Encapsulation techniques and traffic characterisation of an Ethernet-based 5G fronthaul F. Civerchia 1 , K. Kondepu 1 , F. Giannone 1 , S. Doddikrinda 2 , P. Castoldi 1 , and L.
Finally a characterisation of the traffic generated by the fronthaul is presented. Such characterisation may guide in the selection of the right network for fronthaul transport. Abbade, L. Silva Lessa, M. In this paper, we propose the use of a new digital signal processing DSP -based technique to improve the confidentiality of signals traveling through PONs. The technique consists of phase-shifting and delaying the spectral components of baseband signals that further modulate optical carriers. Results reveal that the encrypted signals may be properly decoded even under a high-loss regime.
Cano, J. Tabares, V. Polo, and J. The amplitude and duty cycle of the modulating signal are optimized for a DPKS signal. We achieved sensitivities of Torres-Ferrera, H. Wang, V. Ferrero, R. Mercinelli, and R. Modulation formats based on intensity modulation and direct detection IM-DD are still preferred to implement next generation HS-PON due to their advantages in terms of complexity and costs compared to coherent solutions.
In this contribution, we introduce the use of pre-chirping technique in order to overcome this reach limitation. Hemmati, Sr. Nearly 3. Cost effective technology advancements at a variety of communications bands and for various telecom scenarios is required. Gupta, A. Dixit, and C. However, in order to increase the cost savings, these networks are planned to connect heterogeneous types of users such as base stations, residential or business users.
Statistical multiplexing of XGPON allows assigning different bandwidth to the different users based on their demands and always guaranteeing the agreed Service Level Agreements. This work aims at evaluating the impact to packet delay and throughput of different XGPON scenarios for different user distributions. Furthermore, the paper evaluates the flexibility to cope with extra traffic caused by existing protection schemes.
Segarra, V. Sales, and J. Ayoub, S. Shehata, F.
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Musumeci, and M. Tornatore Department of Electronics, Information and Bioengineering, Politecnico di Milano, Italy Filterless optical networks based on broadcast-and-select nodes have been proven to be a cost-effective alternative to active photonic network solutions in core networks. However, due to the emergence of novel metro-based high-bandwidth cloud-based services e. In this paper, we evaluate the performance of fully-filterless and semi-filterless i.
Our evaluations show that, due to the ring-based hierarchical nature of metro networks, fully-filterless architectures tend to require excessive spectrum utilization as the broadcast effect spreads among all hierarchical rings. On the contrary, semi-filterless network architectures seem more promising due to the presence of filters that fend off the propagation of unfiltered channels. The results also show that it is more advantageous to deploy filters at nodes of the lower network levels than at nodes of higher network levels.
Elaine Wong Supporting low-latency applications through hybrid cost-optimised cloudlet placement S. Mondal, G. Das, and E. Wong University of Melbourne, Australia Low-latency applications such as augmented reality, cognitive assistance, and context-aware computation are better supported by augmenting cloud networks with cloudlet enabled edge computing solution.
This overcomes the high-transmission latency arising from the edge devices in the access segment to cloud servers located in the core. In this talk we review our proposed hybrid cost-optimization framework for optimal cloudlet placement over existing passive optical access networks, subject to capacity and latency constraints. We formulate a mixed-integer non-linear program to identify ideal locations either at the central office, remote node, or in the field for cloudlet placement over three areas of differing population densities.
Our results point to the fact that the installation of more RN and CO-located cloudlets will yield an improved cost optimal solution than the installation of field cloudlets alone, and that the percentage of the incremental energy budget arising from the installation of cloudlets are low.
BigNeO invited presentations:. Josep Lluis Berral When and how to apply statistics, machine learning and deep learning techniques J. Berral, Barcelona Supercomputing Center, Spain Machine Learning has become 'commodity' in engineering and experimental sciences, as did calculus and statistics before. After the hype produced during the 00's, machine learning statistical learning, neural networks, etc.
But while knowledge on this field has settled among professionals, novice ML users still have trouble to decide when determined techniques could and should be applied to solve a given problem, sometimes ending with over-complicated solutions for simplistic problems, or complex problems partially solved by simplistic methods.
This tutorial wants to introduce the most common techniques on statistical learning and neural networks, next to use cases where such techniques can be applied, looking towards showing the proper techniques for each given scenario. Fabien Boitier Automated optical networks with monitoring and machine learning F. Boitier and P. We leverage the collected information with machine learning and show how optical networks can benefit from such techniques. We review how the optical network could be automated with learning techniques based on different use cases and associated architectures, ranging from low latency to high cognition requirements.
Ramon Casellas Enabling data analytics and machine learning for 5G services within disaggregated multi-layer transport networks R. Velasco, R. King, and R. Such AI-assisted automated network operation is expected to facilitate innovation in multiple aspects related to the control and management of future optical networks, and is a promising milestone in the evolution towards autonomous networks, where networks self-adjust parameters such as transceiver configuration. Ruiz 1 , R. Khodashenas 2 , J. Pedreno-Manresa 3 , N. Merayo 1 , J. Aguado 1 , P.
Pavon-Marino 3 , S. Siddiqui 2 , J. Mata 1 , P. Lorenzo1, and E. The algorithm outperforms other proposals in terms of blocking ratio and active CPU cores utilization. Morales 1 , P. Festa 2 , M. Ruiz 1 , and L. In this paper, the original VENTURE algorithm is compared against two state-of-the-art metaheuristics for combinatorial network optimization. Finally, the performance of the VENTURE algorithm and the two proposed metaheuristics is numerically evaluated using an exact solving method as reference. Gifre 1 , M. Ruiz 2 , and L.
In addition, the use of Monitoring and Data Analytics MDA helps to maintain the required network performance, while reducing total cost of ownership. MDA agents use data analytics to make local decisions close to network devices, whereas MDA controllers collate and export metered data transparently to customer controllers, all of them leveraging customizable and isolated data analytics processes.
Discovered knowledge can be applied for both proactive and reactive network slice reconfiguration, triggered either by service providers or customers, thanks to the interaction with state-of-the-art software-defined networking controllers and planning tools. Izquierdo-Zaragoza and L. An illustrative example of killing application is intent-based provisioning.
Here, business logic is based on the definition of service requests including endpoints as well as other constraints like bandwidth or QoS requirements, then leveraging the SDN controller for allocation, generally based on shortest path provisioning.
In order to apply smarter network allocation algorithms as well as more sophisticated like service reallocation, integration with external PCEs is mandatory. In this paper, we present a framework for integration between SDN controllers and planning tools opening the door not only to applications like smarter intent-based provisioning but also in-operation network planning and reconfiguration, thanks to the integration with monitoring and data analytics platforms.
A use case based in multilayer service provisioning and operation is presented to validate our framework. Brigitte Jaumard Make-before-break wavelength defragmentation B. Jaumard 1 , H. Pouya 1 , and D. In this paper, we propose a Make-Before-Break MBB wavelength defragmentation process which minimizes the bandwidth requirement of the resulting provisioning. We next compare the latter provisioning with a minimum bandwidth provisioning that is not subject to MBB.
The resulting solution process is thoroughly tested on various data and network instances. Guido Maier Deep learning-based traffic prediction for network optimization S.
Troia, R. Alvizu, Y. Zhou, G. Maier, and A. Pattavina Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy In recent years, researchers realized that the analysis of traffic datasets can reveal valuable information for the management of mobile and metro-core networks. That is getting more and more true with the increase in the use of social media and Internet applications on mobile devices. In this work, we focus on deep learning methods to make prediction of traffic matrices that allow us to proactively optimize the resource allocations of optical backbone networks.
Recurrent Neural Networks RNNs are designed for sequence prediction problems and they achieved great results in the past years in tasks like speech recognition, handwriting recognition and prediction of time series data. Then, we used the predictions to dynamically and proactively allocate the resources of an optical network.
Comparing numerical results of static vs. Morais 1,2 and J. Three network scenarios to efficiently generate the knowledge database used to train the models are proposed as well as an overview of the most used ML models. However, ANN is the model presenting better generalization, correctly predicting the QoT of up to Antonio Napoli Maximizing the capacity of installed optical fiber infrastructure via wideband transmission J.
Fischer 1 , M. Cantono 2 , V. Curri 2 , R. Braun 3 , N. Costa 4 , J. Pedro 4 , E. Pincemin 5 , P. Recently, there has been a clear trend in the industry to support additional bands beyond C-band. This contribution highlights the perspectives of wideband communication systems for optical networks, providing a realistic roadmap for their deployment. Particular emphasis is paid on a first analysis to estimate the maximum transmittable capacity over these systems.
Romero-Gazquez 1 , M. Bueno-Delgado 1,2 , F. Moreno-Muro 1 , and P. User traffic demands and potential antenna locations are estimated from the city layouts. They feed a tentative dimensioning of a 5G backhaul segment. Raffaelli, B. Khorsandi, and F. Tonini University of Bologna, Italy Distributed location algorithms, as a practical approach to optimally locate virtual functionalities in C-RAN, are presented and compared to conventional optimization techniques, with application to BBU Hotel placement and dynamic evolution of C-RAN configuration. Danish Rafique Machine learning based optimal modulation format prediction for physical layer network planning D.
It includes laying out all possible combinations of modulation formats, fiber types, forward error correction codes, channel spacing, etc. Machine learning, an artificial intelligence toolset, may be applied to solve aforementioned issues by allowing data-driven model development, and consequent transmission quality prediction. While network planning is an extensive topic, in this paper, we focus on neural network based modulation format classification, autonomously identifying best possible modulation format for a given link configuration. Marc Ruiz Soft failure localization in elastic optical networks A.
Vela, B. Shariati, M. Ruiz, J. Comellas, and L. In this paper, we focus on presenting soft failure localization algorithms based on two different active monitoring techniques. Results are presented to validate both algorithms in the event of several soft failures affecting lasers and filters. Behnam Shariati Spectrally and spatially flexible optical networks: Recent developments and findings B. Shariati 1 , D. Klonidis 2 , J. Comellas 1 , L. Velasco 1 , and I. The efficient utilization of SDM requires some forms of spatial integration which is expected to bring huge cost savings for the deployment of SDM-based optical networks.
Spatially integrated components with different characteristics have been largely explored and demonstrated for the realization of SDM networks, including; transmission media, transceivers with sophisticated digital signal processing DSP units, amplifiers, and ultimately optical switching nodes which are the key elements for the realization of transparent optical networks exploiting SDM technologies. As a consequence, in contrast to the currently deployed optical networks based on standard single mode fibers SSMF , the next generation of optical networks exploiting SDM technologies can be realized utilizing various kinds of transmission media and the other corresponding elements.
However, due in part to the physical properties of different components, their complexity, and the technology limitations not all of them meet the economic feasibility and a desired level of network-wide performance. Therefore, careful analysis should be done revealing the most appropriate and cost-effective solutions. In this work, we review the recent developments and findings which pave the way for a simplified and efficient implementation of the spectrally and spatially flexible optical networks.
Alba Vela Examples of machine learning algorithms for optical network control and management A. In particular, for optical networks, the use of machine learning algorithms might be applied for prediction and to detect patterns, among others.
Those predictions and pattern discovery can help to understand the behaviour of optical connections and facilitate improving the performance of the network. In this paper, we will review main supervised and unsupervised machine learning algorithms including linear regression, support vector machines, Bayesian networks, and k-means. Illustrative examples of the reviewed algorithms applied to optical networks will be presented.
Vela, M. Ruiz, and L. Monitoring the performance of the physical layer allows verifying the proper operation of optical connections, as well as detecting bit error rate BER degradations. Anticipating BER degradation facilitates self-decision making to keep committed service level. In this paper, we analyze several failure causes affecting the quality of optical connections and propose the BANDO algorithm focused on detecting significant BER changes in optical connections.
BANDO runs inside the network nodes to accelerate degradation detection and sends a notification to the centralized controller. Results show significant improvement anticipating maximum BER violation. We assume that trenching costs successfully discourage operators from deploying alternative routes for the majority of their non-critical clients; thus, these clients are protected only from partial cable cuts thanks to backup fibers in affected cables.
We discuss the problem of dimensioning the number of these backup fibers having in mind expenses, on the one hand, and resiliency, on the other hand. CTS invited presentations:. Silvio Abrate Remotized control of power electronic devices exploiting a plastic optical fiber photonic bus A. Varatharajan 1 , P.
Savio 2 , E.
Vizzaccaro 3 , S. Abrate 2 , G. Pellegrino 2 , and V. This work investigates the feasibility of shared centralized control and communications units able to control and synchronize different power converters, enabling real-time control and telemetry with a cloud approach on the Internet. Our research is focused on defining a proper communication bus making communications between devices and their remote control and telemetry possible in such a challenging environment. Noureddine Boudriga An optical wireless communication based 5G architecture to enable smart city applications W. Boubakri, W.
Abdallah, and N. One of the main challenge is to enable seamless connectivity between the different components composing the city infrastructure and users. Current communication approaches in smart cities applications are based on radio frequency RF transmission technology which cannot satisfy data rate demand and transmission delay requirement of smart city applications.
The 5G communication network is being proposed to enhance the QoS provided by the mobile infrastructure which can contribute in the deployment of smart city applications. In particular, optical wireless technologies are envisioned by many research communities as a promising solution to provide the needed broadband connectivity and satisfy the quality of service QoS requirements of users. The main objective of this paper is to propose a communication architecture that can seamlessly integrate the optical wireless technology in the 5G communication networks to enable smart city applications deployment.
The proposed network architecture is structured into three layers integrating different optical wireless technologies. More precisely, we study the deployment of optical access points OAPs in specific locations of interest in the city such as road intersections, lighting systems, and signalling equipment in order to enhance the performances of the sensing, tracking, and communication services. Furthermore, we propose to integrate a backhaul network composed of optical access points which is structured into a grid topology to enable communication using free space optical FSO transmission. The optical access points are expected to implement code-word based all-optical switching capability to forward traffic between optical access points.
Finally, issues related to cell dimensioning, wavelengths management and technology integration are discussed and some alternatives are proposed. Asorey-Cacheda 1 , A. Garcia-Sanchez 2 , C. Marco-Jornet 2 , P. Moreno-Riquelme 2 , and J. This paper presents a crowd-sensing approach that leverages the mobility of public transportation to monitor air quality in different inner city areas over the course of a day. To meet this objective, we present a system architecture for the compilation of environmental data using low-cost mobile sensor devices equipped in public transport vehicles.
Thus, the network topology has been designed to be robust and reliable, tackling connectivity problems through the use of delay-tolerant networks and Bluetooth ad-hoc gateways, and to be flexible, dealing with changing topologies through the use of mobile ad-hoc networks. The tests carried out in the public transportation of Cartagena Spain show the feasibility of the proposed architecture for this vehicle to infrastructure service and the effectiveness of deploying a mobile measurement system instead of fixed stations, which is the usual solution for many smart cities.
Kira Kastell Automated network selection for moving devices with respect to user preferences K. Although the networks have been designed for different purposes they all may serve different needs of moving devices. For the moving devices the choice of the best available network determines the quality of the transmission. Besides the network parameters, which should not only be considered as standardized values but also with real measurement data, the user preferences are also taken important for the acceptance of the choice.
Depending on the communication need, mobile users may prefer a slower but more secure connection or a fast but less reliable one. Therefore we designed algorithm considering network parameters and user preferences. This can easily be extended to further networks as soon as they are emerging. Tetsuya Kawanishi GHz linear-cell systems for public transportation systems T.
Kawanishi 1,2 , A. Kanno 2 , and N. We also focus on applications for public transportation systems including airport runways, railways, etc. Lazaro, M. Coves, S. Sarmiento, J. Altabas, and A. Communication among vehicles and vehicles to infrastructure accessing to remote systems and services will help to reduce other requirements in computation and sensing.
Losada 1 , J. Mateo 1 , and J. The particular design and connector type define the distance range of the fibre to the optical source and to the photodetector. Therefore, they establish the launching angular power distribution and the amount of power reaching the detector at a given angle, respectively.
Moreover, the tolerances in these design parameters and connectors combined with other POF specific factors such as high numerical aperture and strong mode coupling produce a very high variability in the launching and detection conditions. As a result, a strong impact on POF transmission properties attenuation and bandwidth is expected. Here, our aim is to assess the variability of several optical sources and photodetectors and its effect over fibre transmission properties and also, to complete the matrix model for POFs and devices in order to accommodate source and detector variability, introducing a new model for the detector.
Rastorguev, and V. Schneider Moscow Aviation Institute National Research University , MAI, Moscow, Russia The algorithm for determining road boundaries in the automotive radar system AR of prevention collisions of an unmanned car in conditions of limited or no optical visibility is considered. The method of constructing this algorithm is based on the results of a statistical analysis of the characteristics of radar signals reflected from the road surface and its boundaries in the AR. The results of applying this algorithm to the processing of radar images RI of the road situation are presented, which are obtained as a result of full-scale testing of the experimental sample of AR.
The results of this processing made it possible to estimate the accuracy of determining the road boundaries in the AR and to justify the requirements for algorithms for autonomous control of an unmanned vehicle. Ananenkov, D. Marin, V. Nuzhdin, V. Rastorguev, and P. Sokolov Moscow Aviation Institute National Research University , MAI, Moscow, Russia In this paper the actual problem of monitoring the movement of small-sized unmanned aerial vehicles UAVs flying within the airport territory, including near buildings and structures is considered.
The possibilities of solving this problem using multifunctional airfield radar - Surface Movement Radar SMR , are estimated. In accordance with ICAO requirements, this radar is designed to detect and control the movement of aircraft and vehicles on the territory of an airport in all weather conditions.
Therefore, in addition to its main tasks, this radar should effectively detect and control the movement of small-size UAVs, especially in the airport's closed flight zones. The problems of technology for creating and selecting parameters for such radars are discussed. For a justified choice of the radar parameters, the results of the estimation of the effective scattering surface Radar Cross-Section values of the observed UAV are presented. The results of field tests of the experimental sample of the airfield radar for the detection of small UAVs under intense reflections from the underlying ground surface are presented.
Prince Anandarajah Multi-section semiconductor optical amplifiers for data centre networks M. Hammad 1 , A. Anchal 1 , S. Landais 1 , A. Kaszubowska-Anandarajah 2 , and P. The storage and movement of data within the DCs is driving the requirement for cost-effective, higher capacity inter- and intra- next generation DC networks .
The modulation format that is currently touted as the most suitable for such high capacities is 4-level pulse amplitude modulation PAM4 , which carries 2 bits per symbol. Optical amplification is needed for reach extension for inter- and intra- DC communications, Semiconductor optical amplifiers SOAs are needed to realize a low cost amplification solution. SOAs possess many advantages, including low power consumption, small footprint, wide bandwidth, being integrateable, and the ability to accommodate wavelength ranges beyond the scope of Erbium doped fibre amplifiers.
However, the use of SOAs for linear amplification of C-band optical signals is still relatively limited, mainly due to the relatively large noise figure NF associated with them compared to erbium doped fiber amplifiers and low saturation powers of about 10 mW. Multi-section SOAs are known to possess superior NFs and larger saturation powers than an equivalent single-section SOA , and hence may provide performance benefit for reach extension for DC networks.
In this work, we examine the use of a multi-section semiconductor optical amplifier MS-SOA  to provide an improvement in its use as a linear amplifier compared to a single section SOA. We expect an improvement in the input power dynamic range of at least 3 dB . The combination of a lower NF and higher saturation power enables crosstalk-free amplification of simultaneous multi-wavelength channels using the same SOA device. Kachris and I. Surveys Tuts. Lennox, K. Carney, R. Maldonado-Basilio, S. Philippe, A. Bradley, and P. Landais, Impact of bias current distribution on the noise figure and power saturation of a multicontact semiconductor optical amplifier, OSA Optics Letters , vol.
Landais, and L. Barry, Estimation of the performance improvement of pre-amplified PAM4 systems when using multi-section semiconductor optical amplifiers, Applied Sciences 7, no. Yossef Ben-Ezra Application of all-optical memory for advanced modulation formats in communication intra-datacenter networks intra-DCNs Y. Ben Ezra 1,2 and B. As a result, the performance of the intra-datacenter networks DCNs must be improved .
Optical signal processing is an alternative to electronic techniques for processing information because it can substantially increase the processing speed of devices, the capacity and reach of optical links, and reduce the energy consumption and latency of communication systems . In particular, all-optical memory is necessary for the elimination of the electronic bottleneck in modern optical communication networks .
Recently, we proposed a novel architecture of an ultra-fast all-optical memory loop based on the Mach-Zehnder interferometer MZI with quantum dot semiconductor optical amplifiers QD SOA as nonlinear components and investigated theoretically the proposed all-optical memory loop for the case of the 4 level PAM 4-PAM format , . In this paper, we investigated theoretically the application of this ultra-fast all-optical memory loop for the advanced modulation formats such as 8-PAM and quadrature amplitude modulation QAM in intra-datacenter networks DCNs.
The simulation results show that for 8-PAM and QAM modulation formats the input signal and the same signal after the transmission over the memory loop are practically identical, and the pattern effect is absent. Agrell, M. Karlsson, A. Chraplyvy, et al. Yang, Q. Weng, W. Ben Ezra, B. Enrico Ghillino The Synopsys software environment to design and simulate photonic integrated circuits: A case study for G transmission E. Ghillino 1 , E. Virgillito 5 , P. Mena 1 , R. Scarmozzino 1 , R.
Stoffer 2 , D. Richards 3 , A. Ghiasi 4 , A. Ferrari 5 , M. Cantono 5 , A. Carena 5 , and V. Curri 5 1 Synopsys, Inc. Transceivers adopting this standard will need to substantially reduce cost and power consumption with respect to similar equipment that are currently the state-of-the-art for long-haul networks. The most promising solution for such a challenging objective is offered by integrated photonics, a state-of-the-art technology capable of providing high-speed components and large-scale circuits with high-volume, high-yield, and low-cost manufacturing.
Synopsys proposes an integrated software SW environment capable of assisting with virtual prototyping and testing of the circuit before proceeding with the physical implementation. It is the integration of the OptSim Circuit tool for schematic-driven photonic integrated circuit PIC design, with the PhoeniX OptoDesigner photonic layout tool, and the RSoft Photonic Component Design Suite, thus providing a single modeling solution at the circuit, layout, and device levels of abstraction.
In this work, we first present this integrated SW environment, focusing on its potential and usability. Griesser 1 , N. Eiselt 2 , A. Dochhan 2 , M. Eiselt 2 , and J. The paper will discuss the specific pros and cons with respect to component properties and the required signal processing effort. Photonic Networks. OFC , paper W1K. Kambiz Jamshidi Design trade-offs of high-speed energy-efficient modulators for short-range optical interconnect S. Hosseini, N. Kamutam, M. Catuneanu, and K. Therefore, reconfigurable energy-efficient optical interconnects for the rack to rack, board to board, chip to chip and intra-chip communication is required.
The electro-optical modulator is the key component for this purpose which needs to be optimized at the component level. Performance analysis of the modulators is necessary to enable system designers to choose proper designs which satisfy system level parameters such as loss, bandwidth, and energy efficiency, taking into account link budget limitations. In this paper, the performance trade-offs of Mach-Zehnder, corrugated waveguide, and ring modulators are investigated in terms of physical parameters, like drive voltage, length, and doping levels.
Diego Perez-Galacho Silicon modulators for the generation of advanced modulation formats D. Perez-Galacho 1,2 , L. Bramerie 3 , C. Baudot 4 , M. Chaibi 3 , S. Vulliet 4 , L. Vivien 2 , F. Boeuf 4 , C. Peucheret 3 , and D. In this framework, modulators are key elements in the performance of an optical link. In fact, silicon modulators based on carrier depletion have been demonstrated with outstanding performance up to 40Gbps.
An Integrated SDN-Based Architecture for Passive Optical Networks
At the same time, in order to avoid dispersion compensation circuits, the use of the O-Band nmnm is preferred for short range optical communications. Llorente 1 , M. Morant 1 , J. Bruno , V. Almenar 2 , J. Corral 1 , J. Fuster 1 , and J. In this paper a critical overview of the required technologies to open up multi-core fibre as a valid solution leveraging optical access networks infrastructure already deployed on the field for hybrid radio-optical backhaul is reported. Optical transmission using multi-core fibre MCF has been already proposed as an interesting solution for optical access network, providing a lower installation cost and higher transmission capacity.
In this work, we propose and evaluate experimentally the joint use of SSMF and MCF for and hybrid backhaul solution supporting single-carrier SC and multi-carrier OFDM connectivity for cellular service and radio transport provision, respectively. The two modulations schemes are supported as a multidimension modulation employing space-dimension multiplexing at the same wavelength over different cores of the MCF, in particular, we compare the performance of single-carrier SC and multi-carrier OFDM signals. Oskars Ozolins Short reach optical interconnects with single externally modulated laser operated in C-band O.
Ozolins 1 , Xiaodan Pang 2,1 , A.
Udalcovs 1 , Lu Zhang 2 , R. Schatz 2 , U. Westergren 2 , G. Jacobsen 1 , S. This trend leads to technical and economic challenges to keep up scalability for bandwidth in short reach optical interconnects. It is of critical importance to enable a cost-efficient solution for Gbps links . Solution for GbE based on four optical lanes  or even two optical lanes  may be more attractive to reduce power consumption and complexity of parallelism.
This requires InP and silicon opto-electronic components with more than 70 GHz bandwidth . In this talk, we report on several experimental demonstrations for short reach optical interconnects in C-band. Related digital signal processing techniques are also discussed in terms of practical implementation and complexity, paving the way for cost-effective interconnects using high speed advanced modulation formats. Ozolins, et al. Lightwave Technol. Pang, et al. ECOC , paper P2. Zhang, et al. Ioannis Tomkos Cost and power consumption comparison of Gbps intra-datacenter transceiver modules T.
Rokkas, I. Neokosmidis, and I. The current characteristics of proposed transceiver modules, along with their advantages and drawbacks, are initially presented. Possible migration paths towards G and beyond transceivers are also discussed. David Thomson Towards high speed and low power silicon photonic data links D. Khokhar 1 , C. Littlejohns 1 , J. Byers 2 , L. Mastronardi 1 , M. Husain 2 , F. Gardes 1 , S. Saito 2 , Xia Chen 1 , M. Milosevic 1 , Y. Franz 1 , A. Runge 1 , S. Mailis 1 , A. Peacock 1 , P. Wilson 3 , and G. For optical communications applications, e.
In this paper we report our recent work on optical modulators in silicon and their integration with CMOS electronics on silicon. Juan Jose Vegas Olmos G Interconnects for data centres and high-performance computing — What is now and what is next? Vegas Olmos 1 , J.
Mohr 1 , S. Christensen 1 , K. Skouby 2 , and J. We will explain the current evolution from NRZ to PAM-4 as modulation format of choice in high-capacity interconnects, and highlight some key challenges to be resolved. Furthermore, alternative advanced modulation formats which can expand even further the capacity per single lane will be presented, including experimental demonstrations on nm VCSELs. DCN invited presentations:. Antonella Bogoni The orbital angular momentum of light for ultra-high capacity data centers M. Scaffardi 1 , M. Malik 1,2 , Jiangbo Zhu 3 , G. Goeger 4 , Ning Zhang 5 , C.
Klitis 5 , Yabin Ye 4 , P. Rydlichowski 6 , V. Toccafondo 1 , M. Lavery 5 , N. Andriolli 2 , Siyuan Yu 3 , M. Sorel 5 , and A. OAMs can be exploited for short reach ultra-high bit rate fiber links and as additional multiplexing domain in transparent ultrahigh capacity optical switches.