Article
Computer Science, Information Systems
Giannis Savva, Konstantinos Manousakis, Jacek Rak, Ioannis Tomkos, Georgios Ellinas
Summary: This work proposes efficient connection provisioning techniques to mitigate high-power jamming attacks in spectrally-spatially flexible optical networks using multicore fibers. By modeling the impact of these attacks on lightpath quality of transmission through inter-core crosstalk, the paper formulates an integer linear program and heuristic algorithms to achieve attack-aware routing, spectrum allocation, modulation format, and core allocation, optimizing network resource utilization and minimizing the impact on established lightpaths. Simulation results demonstrate the effectiveness of the proposed techniques in reducing inter-core interactions and establishing high spectral efficiency connections.
Article
Computer Science, Information Systems
Roza Goscien
Summary: The research focuses on the efficient modeling and optimization of flow restoration in spectrally-spatially flexible optical networks using a single mode fiber bundle. Two-phase optimization problem is studied, including network planning and flow restoration, with simulations showing that spectral-spatial allocation can improve restoration efficiency and reduce restoration cost.
Article
Computer Science, Information Systems
Piotr Lechowicz
Summary: Spectrally-spatially flexible optical networks (SS-FONs) are considered the next frontier in optical backbone networks for supplying high-capacity transmission. Before reaching maturity for commercial applications, crucial issues need to be solved. This study focuses on the fragmentation problem for dynamic traffic in SS-FONs with lane changes and proposes a novel weighted fragmentation metric for reducing network fragmentation.
COMPUTER COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Piotr Lechowicz, Aleksandra Knapinska, Roza Goscien
Summary: With the increasing traffic in networks, current backbone optical networks are limited by physical constraints and require new technologies. Spectrally-spatially-flexible optical networks aim to increase capacity but need to address various challenges such as traffic grooming and optical channel management.
Article
Computer Science, Information Systems
Szymon Wojciechowski, Roza Goscien, Pawel Ksieniewicz, Krzysztof Walkowiak
Summary: The latest trends in computer networks present new challenges, such as link dimensioning in optical networks. This study proposes a hybrid regression model to estimate the objective function and demonstrates its superiority over other methods in certain cases.
Article
Engineering, Electrical & Electronic
Bo Chen, Wei Wei, Jingzhu Shao, Borui Xu, Huan Zhu, Gangyi Xu, Chongzhao Wu
Summary: This study presents the design and fabrication of flexible and stretchable terahertz transmission waveguides using 3D printing technology. The waveguides guide radiation from terahertz quantum cascade lasers and exhibit high-quality output beam profiles and superior mechanical endurance.
IEEE PHOTONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Qiuyan Yao, Hui Yang, Bowen Bao, Ao Yu, Jie Zhang, Mohamed Cheriet
Summary: This paper explores the combination of space division multiplexing technology with elastic optical networks to address capacity crunch in backbone networks, utilizing association rule mining and core and spectrum assignment algorithm to decrease the proportion of services affected by crosstalk and reduce the possibility of fragment generation.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Computer Science, Hardware & Architecture
Sadananda Behera, Giannis Savva, Konstantinos Manousakis, Georgios Ellinas
Summary: This work proposes a framework for optimizing routing, modulation, spectrum, and core allocation in elastic optical networks with multi-core fibers, taking into account various impairments. The framework uses bit loading and independently modulates each demand's frequency slots based on the interference level. Both an optimization framework and a heuristic algorithm are developed, ensuring an acceptable bit error rate for each demand. Simulation results show that the proposed approach achieves lower fragmentation and less spectrum usage compared to other techniques.
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING
(2023)
Article
Biology
Hwayeon Ryu, Jennifer Miller, Zeynep Teymuroglu, Xueying Wang, Victoria Booth, Sue Ann Campbell
Summary: This study investigates the existence and stability conditions of cluster solutions in inhibitory neural networks within the striatum, finding that adjacent neurons can form synchronized firing clusters. Using phase model reduction, it is shown that spatially close neurons can synchronize within the same cluster, with stability conditions for these solutions identified. The results demonstrate that an inhibitory network with non-monotonic, distance-dependent connectivity can exhibit cluster solutions where adjacent cells fire together.
MATHEMATICAL BIOSCIENCES
(2021)
Article
Engineering, Electrical & Electronic
Bijoy Chand Chatterjee, Abdul Wadud, Eiji Oki
Summary: This study proposes a proactive fragmentation management scheme based on batch processing to enhance resource utilization through prioritizing lightpath requests and using a fair allocation strategy. The results show that the proposed scheme outperforms benchmark schemes in optical networks.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Proceedings Paper
Computer Science, Theory & Methods
Warisha Bilal, Ming Hsieh, Jeremy Liu, Angela Van, Michal Aibin
Summary: Due to the increase in global data transmission, new solutions to optical networks are proposed to meet the higher transmission demand. This paper introduces a new algorithm based on adaptive slot mapping to reduce Bit Rate Blocking (BRB). Comparative analysis shows that our algorithm reduces BRB by an average of 20-25%.
2022 IEEE CANADIAN CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING (CCECE)
(2022)
Article
Computer Science, Hardware & Architecture
Bijoy Chand Chatterjee, Abdul Wadud, Imran Ahmed, Eiji Oki
Summary: The paper introduces a priority-based crosstalk-avoided core, mode, and spectrum allocation scheme in SS-EONs, which enhances resource utilization, reduces blocking probability, and allows higher traffic loads.
IEEE-ACM TRANSACTIONS ON NETWORKING
(2021)
Article
Engineering, Electrical & Electronic
Weichang Zheng, Mingcong Yang, Chenxiao Zhang, Yu Zheng, Yongbing Zhang
Summary: The paper discusses the deployment issues of N-core MCF-based networks under different granularity combinations, indicating that spatial and spectral granularities influence both device cost and network performance. This research provides guidance for real-world network planning and design.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Computer Science, Information Systems
Bijoy Chand Chatterjee, Imran Ahmed, Abdul Wadud, Mukulika Maity, Eiji Oki
Summary: This paper proposes a Bi-Partitioning-based crosstalk-avoided Resource Identification and Allocation scheme to enhance resource utilization in spectrally-spatially elastic optical networks. By using counter-propagation and two distinct sets of cores and modes, the scheme effectively suppresses inter-mode and inter-core crosstalks and reduces blocking probability.
IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT
(2022)
Article
Telecommunications
Joyps Halder, Mukulika Maity, Eiji Oki, Bijoy Chand Chatterjee
Summary: This letter proposes a resource allocation model based on shared backup path protection for addressing the challenges of providing survivability against failure and enhancing resource utilization in spectrally-spatially elastic optical networks. The model introduces integer linear programming problems to optimize resource allocation and minimize the highest utilized spectrum slot index.
IEEE COMMUNICATIONS LETTERS
(2022)
