Rational Agent-Based Decision Algorithm for Strategic Converged Network Migration Planning
To keep up with constantly growing user demands for services with higher quality and bandwidth requirements, telecommunication operators are forced to upgrade their networks. This upgrade, or migration of the network to a new technology, is a complex strategic network planning problem that involves ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 25, 2019 Category: Physics Authors: Sai Kireet Patri Elena Grigoreva Wolfgang Kellerer Carmen Mas Machuca Source Type: research

Eavesdropping-Aware Routing and Spectrum/Code Allocation in OFDM-Based EONs Using Spread Spectrum Techniques
In this work, eavesdropping-aware routing and spectrum/code allocation techniques are proposed for elastic optical networks (EONs) using orthogonal frequency division multiplexing (OFDM). To introduce physical (optical) layer security and protect these networks against eavesdropping attacks, spread ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 25, 2019 Category: Physics Authors: Giannis Savva Konstantinos Manousakis Georgios Ellinas Source Type: research

Cost-Optimal Deployment of a C-RAN With Hybrid Fiber/FSO Fronthaul
Centralized radio access network (C-RAN) has been considered as an architectural solution able to reduce capital and operational expenditure in dense 5G cellular networks while allowing better network performance. The C-RAN approach decouples baseband units from antenna sites and places them in ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 25, 2019 Category: Physics Authors: Federico Tonini Carla Raffaelli Lena Wosinska Paolo Monti Source Type: research

Efficient T-CONT-Agnostic Bandwidth and Wavelength Allocation for NG-PON2
Dynamic bandwidth and wavelength allocation are used to demonstrate high quality of service (QoS) in time wavelength-division multiplexed – passive optical networks (TWDM-PONs). Both bandwidth and wavelength assignment are performed on the basis of transmission containers (T-CONTs) and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 25, 2019 Category: Physics Authors: Pandelis Kourtessis Wansu Lim Noemi Merayo Yeon-Mo Yang John M. Senior Source Type: research

Performance Analysis of a Multiuser Dual-Hop Amplify-and-Forward Relay System With FSO/RF Links
This paper studies the performance of dual-hop multiuser relay systems over mixed free-space optical/radio frequency (FSO/RF) links. We consider a system where a source node wants to communicate with multiple users through a single relay. The source node communicates with the relay point over an ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 20, 2019 Category: Physics Authors: Ruijie Li Te Chen Luhai Fan Anhong Dang Source Type: research

Connected OFCity Challenge: Addressing the Digital Divide in the Developing World
Over the past 50 years, the development of information and communications technology has provided unprecedented support to the steady economic growth of developed countries. In recent years, some of the largest growth has been reported in emerging economies, which, however, often lack adequate ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 20, 2019 Category: Physics Authors: Marco Ruffini Kasandra Pillay Chongjin Xie Lei Shi Dale Smith Inder Monga Xinsheng Wang Jun Shan Wey Source Type: research

Hybrid DFT-Spread OFDM-Digital Filter Multiple Access PONs for Converged 5G Networks
In this paper, we propose hybrid discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM)-digital filter multiple access (DFMA) passive optical networks (PONs) for the first time to the best of our knowledge. In this case, digital filtering based on digital signal ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 13, 2019 Category: Physics Authors: Y. X. Dong W. Jin R. P. Giddings M. O ’ Sullivan A. Tipper T. Durrant J. M. Tang Source Type: research

Enabling Scalable Disintegrated Computing Systems With AWGR-Based 2.5D Interconnection Networks
2.5D integrated systems exploiting electronic interposers to tightly integrate multiple processor dies into the same package suffer from significant performance degradation caused by the large latency overheads of their die-to-die multihop electrical interconnection networks. Silicon-photonic ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - June 12, 2019 Category: Physics Authors: Pouya Fotouhi Sebastian Werner Roberto Proietti Xian Xiao S. J. Ben Yoo Source Type: research

Holding-Time- and Impairment-Aware Shared Spectrum Allocation in Mixed-Line-Rate Elastic Optical Networks
Cross-phase modulation (XPM) is considered one of the key factors for the quality-of-transmission (QoT) degradation in elastic optical networks (EONs) with mixed line rates (MLRs). Based on the XPM consideration, this paper proposes a holding-time- and impairment-aware shared spectrum allocation ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 22, 2019 Category: Physics Authors: Jijun Zhao Bowen Bao Hui Yang Eiji Oki Bijoy Chand Chatterjee Source Type: research

Performance Analysis of the Limited Bandwidth Allocation Scheme With Excess Distribution
The limited scheme with excess distribution (LS-ED), being a superior grant-sizing protocol in terms of average delay minimization while providing fairness and quality of service (QoS) satisfaction in Ethernet passive optical networks (EPONs), has already been deployed in diverse technologies. An ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 18, 2019 Category: Physics Authors: Sourav Dutta Goutam Das Chayan Bhar Divya Chitimalla Source Type: research

Cost-Effective SFO Compensation Scheme Based on TSs for OFDM-PON
A cost-effective sampling frequency offset (SFO) compensation scheme based on a simple training symbol (TS) is proposed and experimentally demonstrated in an orthogonal frequency-division multiplexing passive optical network (OFDM-PON) downlink transmission system. For SFO estimation and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 16, 2019 Category: Physics Authors: Jie Ma Jing He Ming Chen Zhihua Zhou Yi Liu Yaoqiang Xiao Yun Cheng Source Type: research

Cost-Efficient Quantum Key Distribution (QKD) Over WDM Networks
Quantum key distribution (QKD) uses the laws of quantum mechanics to distribute secret keys with information-theoretic security. To realize QKD for secure communications among multiple distant users, fiber-based QKD networks can be deployed with today ’ s available technologies. Incorporating ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 15, 2019 Category: Physics Authors: Yuan Cao Yongli Zhao Jianquan Wang Xiaosong Yu Zhangchao Ma Jie Zhang Source Type: research

Rearrangeable W-S-W Elastic Optical Networks Generated by Graph Approaches: erratum
We correct the results for WSW2 networks with limited input/output fibers derived in the paper [J. Opt. Commun. Netw., vol.   10, no.   8, p.   675, 2018JOCNBB1943-062010.1364/JOCN.10.000675]. The revised results show that when the number of input/output switches is less than the ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 15, 2019 Category: Physics Authors: Bey-Chi Lin Source Type: research

Switching-Based Cooperative Decode-and-Forward Relaying for Hybrid FSO/RF Networks
In this paper, we propose a switching scheme for a hybrid free-space optical (FSO)/radio frequency (RF) system with a selective decode-and-forward (DF) relay network. Specifically, the system transmits over FSO channels when the instantaneous signal-to-noise ratio (SNR) at the FSO receiver is ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 7, 2019 Category: Physics Authors: Shubha Sharma A. S. Madhukumar Swaminathan R. Source Type: research

Digital Upstream Crosstalk Cancellation for Future (T)WDM-PON Systems
We experimentally demonstrate a multiple-input multiple-output (MIMO) scheme for compensating upstream crosstalk in (T)WDM passive optical network (PON) systems in the electrical domain. The scheme relaxes the optical receiver filter isolation requirements by up to 9   dB, and thus enables ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - May 7, 2019 Category: Physics Authors: Yannick Lefevre Robert Borkowski Jochen Maes Thomas Pfeiffer Source Type: research

Dynamic Resource Allocation in Metro Elastic Optical Networks Using Lyapunov Drift Optimization
Consistent growth in the volume and dynamic behavior of traffic mandates new requirements for fast and adaptive resource allocation in metro networks. We propose a dynamic resource allocation technique for adaptive minimization of spectrum usage in metro elastic optical networks. We consider ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 14, 2019 Category: Physics Authors: Mohammad Hadi Mohammad Reza Pakravan Erik Agrell Source Type: research

Strategies and Benefits of Deploying Ultralow-Loss Fiber Links in an Elastic Optical Network
Superchannels using efficient formats for modulation [e.g., 16-quadrature amplitude modulation (QAM), 64-QAM] and transmitting high data rates (e.g., 400   Gb/s, 1   Tb/s, or even 10   Tb/s) are expected to dominate in future optical networks. Ultralow-loss (ULL) fibers promise ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 9, 2019 Category: Physics Authors: Yongcheng Li Yonghu Yan Wei Chen Sanjay K. Bose Gangxiang Shen Source Type: research

Learning Life Cycle to Speed Up Autonomic Optical Transmission and Networking Adoption
Autonomic optical transmission and networking requires machine learning (ML) models to be trained with large datasets. However, the availability of enough real data to produce accurate ML models is rarely ensured since new optical equipment and techniques are continuously being deployed in the ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 5, 2019 Category: Physics Authors: Luis Velasco Behnam Shariati Fabien Boitier Patricia Layec Marc Ruiz Source Type: research

Dynamic Crosstalk-Aware Lightpath Provisioning in Spectrally – Spatially Flexible Optical Networks
We focus on the problem of crosstalk-aware lightpath provisioning in a dynamic, spectrally and spatially flexible optical network, in which spectral super-channels are carried over multi-core fibers with distance-adaptive transmission. The problem involves establishing a lightpath for a connection ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 5, 2019 Category: Physics Authors: Miros ł aw Klinkowski Grzegorz Zalewski Source Type: research

SLA Formulation for Squeezed Protection in Elastic Optical Networks Considering the Modulation Format
In spectrum-sliced elastic optical path networks (SLICE), the lightpath bandwidth is variable, and the virtual topology overlay on a physical topology shall be designed to optimize the spectrum utilization. Under static traffic, SLICE networks are typically designed through a mixed integer linear ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 4, 2019 Category: Physics Authors: K. D. R. Assis R. C. Almeida H. Waldman A. F. Santos M. S. Alencar M. J. Reed A. Hammad D. Simeonidou Source Type: research

Efficient Dynamic Routing and Spectrum Assignment for Multifiber Elastic Optical Networks
Elastic optical networks are seen as a promising solution to improve spectrum utilization efficiency by utilizing flex-grid optical orthogonal frequency division multiplexing technology and facilitating flexible bandwidth allocation to services with heterogeneous demands. With dramatic growth of ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - April 2, 2019 Category: Physics Authors: Jingxin Wu Suresh Subramaniam Hiroshi Hasegawa Source Type: research

Introduction to the JOCN Special Issue on Latency in Edge Optical Networks
We present a brief introduction followed by an overview of the topics covered in the different papers. (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 28, 2019 Category: Physics Authors: J ö rg-Peter Elbers Ramon Casellas David Larrabeiti Thomas Pfeiffer Source Type: research

Transport Evolution for the RAN of the Future [Invited]
Fifth-generation (5G) systems will introduce several new requirements impacting the mobile transport network. Understanding the impact of 5G systems on transport networks, both wireless and fixed, is essential to the successful introduction of 5G. This paper provides an overview of the ongoing work ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 28, 2019 Category: Physics Authors: Philippe Sehier Philippe Chanclou Nihel Benzaoui David Chen Kimmo Kettunen Mike Lemke Yvan Pointurier Pascal Dom Source Type: research

Impairment-Aware Manycast Routing, Modulation Level, and Spectrum Assignment in Elastic Optical Networks
In this paper, we study the impairment-aware manycast routing, modulation level, and spectrum assignment problem in elastic optical networks. We formulate a mixed-integer linear program (MILP) that serves all the given manycast requests at once, referred to as a joint impairment-aware MILP. The ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 28, 2019 Category: Physics Authors: Mehdi Habibi Hamzeh Beyranvand Source Type: research

Load-Aware Nonlinearity Estimation for Elastic Optical Network Resource Optimization and Management
Elastic optical networks (EONs) have emerged as a promising technology to accommodate the high-capacity and dynamic bandwidth demands of next-generation wireless networks. However, similar to the traditional wavelength division multiplexing optical networks, there exist significant challenges to ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 28, 2019 Category: Physics Authors: Rui Wang Sarvesh Bidkar Fanchao Meng Reza Nejabati Dimitra Simeonidou Source Type: research

Latency-Aware Resource Orchestration in SDN-Based Packet Over Optical Flexi-Grid Transport Networks
In the upcoming 5G networks and following the emerging software-defined networking/network function virtualization (SDN/NFV) paradigm, demanded services will be composed of a number of virtual network functions that may be spread across the whole transport infrastructure and allocated in ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 27, 2019 Category: Physics Authors: S. Fichera R. Mart í nez B. Martini M. Gharbaoui R. Casellas R. Vilalta R. Mu ñ oz P. Castoldi Source Type: research

Latency-Aware CU Placement/Handover in Dynamic WDM Access-Aggregation Networks
Centralized radio access networks (C-RANs) have recently been proposed to cope with the unprecedented requirements of future 5G services, in terms of network capacity, latency, service availability, and network coordination. C-RANs are based on the idea of separating baseband signal processing from ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 27, 2019 Category: Physics Authors: Francesco Musumeci Omran Ayoub Monica Magoni Massimo Tornatore Source Type: research

Hierarchical Edge Cloud Enabling Network Slicing for 5G Optical Fronthaul
Network slicing has been proposed as an innovative concept to partition a physical network into different configurable slices, thereby allowing the network to meet the diverse requirements of expected services in the 5G era. Existing network-slicing schemes focus almost exclusively on the ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 23, 2019 Category: Physics Authors: Chuang Song Min Zhang Yueying Zhan Danshi Wang Luyao Guan Wei Liu Lin Zhang Siya Xu Source Type: research

Minimizing Delay and Packet Delay Variation in Switched 5G Transport Networks
A key requirement in 5G networks is the demand of minimizing transport delay. In this paper we propose and explore novel mechanisms for minimizing packet delay and delay variation in 5G mobile transport networks. Different from mechanisms described in the literature and standardization for ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 19, 2019 Category: Physics Authors: S. Bj ø rnstad R. Veisllari D. Chen F. Tonini C. Raffaelli Source Type: research

Low-Latency and Energy-Efficient BBU Placement and VPON Formation in Virtualized Cloud-Fog RAN
Cloud radio access networks (CRANs) make it possible to reduce power consumption in future 5G networks by decoupling baseband units (BBUs) from cell sites and centralizing the baseband processing from remote radio-heads (RRHs) in BBU pools in a cloud. Although this centralization can enable power ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 19, 2019 Category: Physics Authors: Rodrigo Izidoro Tinini Daniel Mac ê do Batista Gustavo Bittencourt Figueiredo Massimo Tornatore Biswanath Mukherjee Source Type: research

Design and Analysis of Sliding Window ARQ Protocols With Rate Adaptation for Burst Transmission Over FSO Turbulence Channels
This paper studies a cross-layer design of error-control protocols with rate adaptation for a free-space optical (FSO) burst transmission over atmospheric turbulence channels. Specifically, sliding window automatic repeat request (ARQ) protocols are designed so that the window size is determined by ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 15, 2019 Category: Physics Authors: Hoang D. Le Vuong V. Mai Chuyen T. Nguyen Anh T. Pham Source Type: research

Decoupling of Uplink User and HARQ Response Signals to Relax the Latency Requirement for Bridged Fronthaul Networks
Mobile fronthaul (MFH) networking has been widely studied to construct the MFH link cost-effectively. However, the MFH link has a strict latency requirement. Moreover, the burst signals are simultaneously generated since the mobile base stations (MBSs) are time-synchronized among the neighboring ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 13, 2019 Category: Physics Authors: Daisuke Hisano Yu Nakayama Takahiro Kubo Hiroyuki Uzawa Youichi Fukada Jun Terada Source Type: research

Towards Immersive Tactile Internet Experiences: Low-Latency FiWi Enhanced Mobile Networks With Edge Intelligence [Invited]
Historically, research efforts in optical networks have focused on the goal of continuously increasing capacity rather than on lowering end-to-end latency. This slowly started to change in the access environment with post-Next-Generation Passive Optical Network 2 research. The emphasis on latency ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - March 8, 2019 Category: Physics Authors: Martin Maier Amin Ebrahimzadeh Source Type: research

Accurate Quality of Transmission Estimation With Machine Learning
In optical transport networks the quality of transmission (QoT) is estimated before provisioning new connections or upgrading existing ones. Traditionally, a physical layer model (PLM) is used for QoT estimation coupled with high margins to account for the model inaccuracy and the uncertainty in ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 23, 2019 Category: Physics Authors: Ippokratis Sartzetakis Konstantinos (Kostas) Christodoulopoulos Emmanouel (Manos) Varvarigos Source Type: research

Grid Architecture of a Metro-Access Optical Network to Support Discretionary Peer-to-Peer Intracommunication and Intercommunication Between ONUs
Direct communication between optical network units (ONUs) is an important function in metro-access optical networks. In this paper, a grid architecture supporting the intracommunication and intercommunication between ONUs is proposed. By employing an arrayed waveguide grating (AWG) and coarse ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 21, 2019 Category: Physics Authors: Xingfeng Li Chaoqin Gan Yuqi Yan Hubao Qiao Source Type: research

Alien Wavelengths in National Research and Education Network Infrastructures Based on Open Line Systems: Challenges and Opportunities
The European National Research and Education Networks have a long tradition of shared use of resources, in particular, by deploying alien wavelengths (AWs) that disaggregate the transponders from the optical transport network. This network evolution is being extended by making use of White Boxes ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 21, 2019 Category: Physics Authors: Henrik Wessing Pavel Skoda Martin Nordal Petersen Artur Pilimon Piotr Rydlichowski Guy Roberts Rob Smets Jan Radil Josef Vojtech Rasmus Lund Zifan Zhou Chrysostomos Tziouvaras Kurosh Bozorgebrahimi Source Type: research

Unified Error Performance of a Multihop DF-FSO Network With Aperture Averaging
In this paper, the performance of a multihop decode-and-forward (DF) based freespace optical (FSO) network is investigated over a unified exponentiated Weibull distributed atmospheric turbulence channel with pointing error and both types of detection techniques, i.e., heterodyne detection and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 16, 2019 Category: Physics Authors: Deepti Agarwal Ankur Bansal Source Type: research

Mechanism Design and Performance Analysis of Coordinated Registration Protocol for NG-EPON
The IEEE 802.3ca task force is studying the next generation Ethernet passive optical network (NG-EPON), which introduces channel bonding to enable optical network units (ONUs) to bundle multiple wavelength channels to achieve higher peak rates. In order to register these multi-channel ONUs, the ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 16, 2019 Category: Physics Authors: Wei Wang Wei Guo Weisheng Hu Source Type: research

Economic Analysis of TWDM PONs: A Sustainability and Policy-Making Perspective
The time- and wavelength-division-multiplexed (TWDM) passive optical network (PON) is a popular choice for future access technology. However, a comprehensive understanding of its economics is still beyond the reach of the current literature. For example, it is not clearly understood which ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 7, 2019 Category: Physics Authors: Washim Uddin Mondal Dibbendu Roy Sourav Dutta Goutam Das Source Type: research

Protection Schemes for Key Service in Optical Networks Secured by Quantum Key Distribution (QKD)
Quantum key distribution (QKD) is considered a secure solution for key distribution and applied in optical networks to overcome security issues by providing key services in different lightpaths. In optical networks, lightpaths in fibers can be used for the delivery of QKD due to their good ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - February 6, 2019 Category: Physics Authors: Hua Wang Yongli Zhao Xiaosong Yu Zhangchao Ma Jianquan Wang Avishek Nag Longteng Yi Jie Zhang Source Type: research

Efficient Real-Time Scalable Make-Before-Break Network Re-Routing
Dynamic traffic in optical networks leads to capacity fragmentation, which significantly reduces network performance. Consequently, non-disruptive re-routing has attracted a lot of attention from network providers as it dramatically improves the amount of traffic that can be granted with a good ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 31, 2019 Category: Physics Authors: Brigitte Jaumard Huy Quang Duong Romualdas Armolavicius Todd Morris Petar Djukic Source Type: research

Iterative Resource Allocation Algorithm for EONs Based on a Linearized GN Model
Elastic optical networks (EONs) rely on efficient resource planning to meet future communication needs and avoid resource overprovisioning. Estimation of physical-layer impairments (PLIs) in EONs plays an important role in the network planning stage. Traditionally, the transmission reach (TR) and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 29, 2019 Category: Physics Authors: Yuxin Xu Li Yan Erik Agrell Ma ï t é Brandt-Pearce Source Type: research

Load Balancing in Fixed-Routing Optical Networks with Weighted Ordering Heuristics
In this paper we show that the adoption of a simple weighted ordering heuristic strategy to find fixed shortest path routes in a topology can improve load-balancing and, consequently, network performance. We compared our fixed routing strategies against the k-shortest paths (k-SP) fixed-alternate ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 26, 2019 Category: Physics Authors: L. H. Bonani J. C. F. Queiroz M. L. F. Abbade F. Callegati Source Type: research

Path-Based Fragmentation Metric and RSA Algorithms for Elastic Optical Networks
Flexi-grid technology has emerged as the evolution of fixed-grid DWDM core optical networks, enabling more efficient utilization of spectral resources and leading to higher overall network throughput. However, it suffers from an aggravated form of the spectrum fragmentation problem that affects ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 26, 2019 Category: Physics Authors: Federico Pederzolli Domenico Siracusa Andrea Zanardi Gabriele Galimberti Domenico La Fauci Giovanni Martinelli Source Type: research

Spatial Channel Network (SCN): Opportunities and Challenges of Introducing Spatial Bypass Toward the Massive SDM Era [Invited]
Considering middle-term predictions of the need for commercial 10-Tb/s optical interfaces working in 1-P b/s optical transport systems by 2024 and recalling the introduction of the optical bypass when entering the wavelength-abundant era in the early 2000s, we re-evaluate the values of hierarchical ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 24, 2019 Category: Physics Authors: Masahiko Jinno Source Type: research

Monitoring and Physical-Layer Attack Mitigation in SDN-Controlled Quantum Key Distribution Networks
Quantum key distribution (QKD) has been identified as a secure method for providing symmetric keys between two parties based on the fundamental laws of quantum physics, making it impossible for a third party to copy the quantum states exchanged without being detected by the sender (Alice) and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 16, 2019 Category: Physics Authors: Emilio Hugues-Salas Foteini Ntavou Dimitris Gkounis George T. Kanellos Reza Nejabati Dimitra Simeonidou Source Type: research

Orchestrating QoS-based Connectivity Services in a Multi-Operator Sandbox
One of the main features of 5G networks is the coordinated orchestration of both information technology (IT) and connectivity resources. This enables the deployment of a flexible and programmable architecture able to provision end-to-end services with different (and sometimes quite) stringent ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - January 15, 2019 Category: Physics Authors: A. Sgambelluri O. Dugeon A. Muhammad J. Mart í n-P é rez F. Ubaldi K. Sevilla O. G. De Dios T. Pepe C. J. Bernardos P. Monti F. Paolucci Source Type: research

Opportunities for Optical Access Network Transceivers Beyond OOK [Invited]
In response to the ever-growing challenge of using conventional direct-modulation/direct-detection transceivers for upgrading passive optical networks, there has recently been a surge in interest in alternative transceiver technologies. Candidate systems include (simplified) coherent receivers, and ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - December 18, 2018 Category: Physics Authors: Domani ç Lavery Thomas Gerard Sezer Erk ı l ı n ç Zhixin Liu Lidia Galdino Polina Bayvel Robert I. Killey Source Type: research

Delay-Aware Bandwidth Slicing for Service Migration in Mobile Backhaul Networks
Fog computing is expected to be integrated with communication infrastructure, giving rise to the concept of fog-enhanced radio access networks (FeRANs) to support various mission-critical applications. Such architecture brings computation capabilities closer to end users, thereby reducing the ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - December 11, 2018 Category: Physics Authors: Jun Li Xiaoman Shen Lei Chen Jiannan Ou Lena Wosinska Jiajia Chen Source Type: research

Network Design Framework to Optimally Provision Services Using Higher-Symbol Rate Line Interfaces
The standardization of the flexible dense wavelength division multiplexed grid and the ability to explore higher-order modulation formats have been key to simultaneously improve spectral efficiency and reduce the cost per bit transmitted in optical transport networks. These developments will be ... (Source: Journal of Optical Communications and Networking)
Source: Journal of Optical Communications and Networking - December 7, 2018 Category: Physics Authors: Daniela Moniz Jo ã o Pedro Jo ã o Pires Source Type: research