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What comes after optical-bypass network? A study on optical-computing-enabled network

optical FIBER TECHNOLOGY 2024年 84卷

作者： Hai, Dao Thanh RMIT Univ Sch Sci Engn & Technol Ho Chi Minh City Vietnam

A new architectural paradigm, named, optical-computing-enabled network, is proposed as a potential evolution of the currently used optical-bypass framework. The main idea is to leverage the optical computing capabilities performed on transitional lightpaths at intermediate nodes and such proposal reverses the conventional wisdom in optical-bypass network, that is, separating in-transit lightpaths in avoidance of unwanted interference. In optical-computing-enabled network, the optical nodes are therefore upgraded from conventional functions of add-drop and cross-connect to include optical computing/processing capabilities. This is enabled by exploiting the superposition of in-transit lightpaths for computing purposes to achieve greater capacity efficiency. While traditional network design and planning algorithms have been well-developed for optical-bypass framework in which the routing and resource allocation is dedicated to each optical channel (lightpath), more complicated problems arise in optical-computing-enabled architecture as a consequence of intricate interaction between optical channels and hence resulting into the establishment of the so-called integrated/computed lightpaths. This necessitates for a different framework of network design and planning to maximize the impact of optical computing opportunities. In highlighting this critical point, a detailed case study exploiting the optical aggregation operation to re-design the optical core network is investigated in this paper. optical aggregation enables the combination of lower-speed and/or lower-order format channels into a single higherrate and/or higher-order format one for saving spectrum resources and such new perspective give rises to major challenges involving aggregation assignments. Specifically, the determination of demands for aggregation, the nodes at which the optical aggregation takes place and the wavelength selection for aggregated lightpaths constitute a critical issue to be tackled. Nume

关键词： optical-computing-enabled network optical-computing-enabled networking in-network optical computing optical-bypass network Computed lightpath Integrated lightpath optical-layer intelligence optical aggregation Routing Wavelength and aggregation assignment optical network design and planning 2.0 Integer linear programming

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Next-generation optical networks to sustain connectivity of the future: All roads lead to optical-computing-enabled network?

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INTERNET OF THINGS 2025年 29卷

作者： Hai, Dao Thanh Woungang, Isaac RMIT Univ Vietnam Sch Sci Engn & Technol Ho Chi Minh City Vietnam Toronto Metropolitan Univ Dept Comp Sci Toronto ON Canada

The rise and then rapid developments of various nascent technologies, encompassing notably Internet of Things (IoT), Big Data and Artificial Intelligence (AI) have been heralding a new era of connectivity, spanning from people, things, to ultimately intelligence. Such connectivity of the future will be expected to drive explosive Internet traffic growths and thus, posing unprecedented challenges for network operators in scaling up the capacity in a greater cost and energy efficiency. optical communications and networks constituting the backbone of Internet infrastructure will thus have to be radically different in the next 10 years and beyond. Indeed, there have been a number of on-going technological innovations holding the promises of order-of-magnitude capacity expansion, notably multi-band and/or spatial-division-multiplexing-based technologies. On the other hand, from an architectural perspective with the main goal of reducing the effective traffic load in the network and thus gaining greater operational efficiency, optical networks have been essentially remained unchanged in the recent two decades since the year 2000s with the success and then dominance of optical-bypass mode, featuring both significant cost and energy savings compared to the predecessor optical-electrical-optical operation. In the optical-bypass-enabled network, provisioning a lightpath involves the essential cross-connection function whose the underlying principle lies in the fact that in cross-connecting in-transit lightpaths over an intermediate node, such lightpaths must be guarded from each other in a certain dimension, be it the time, frequency or spatial domain, to avoid interference, which is treated as a destructive factor. In view of the rapid progresses in the realm of optical computing enabling the purposed interference between optical channels that are tailored to various computing capabilities, we envision a different perspective to turn around the long-established wisdom in opt

关键词： optical communication-computing integrated network optical-computing-enabled network in-network optical computing optical-bypass network Computed lightpath Integrated lightpath optical-layer intelligence optical aggregation optical XOR Routing Wavelength and network coding assignment Wavelength and computing assignment optical network design and planning 2.0 Integer linear programming

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optical-computing-enabled network: A New Dawn for optical-layer Intelligence? 8

Optical-computing-enabled Network: A New Dawn for Optical-la...

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8th Asia-Pacific Workshop on networking (APNET)

作者： Hai, Dao Thanh Nguyen, Minh Woungang, Isaac RMIT Univ Vietnam Ho Chi Minh City Vietnam Toronto Metropolitan Univ Toronto ON Canada

ISBN: (纸本)9798400717581

Inspired by the renaissance of optical computing recently, this poster presents a disruptive outlook on the possibility of seamless integration between optical communications and optical computing infrastructures, paving the way for achieving optical-layer intelligence and consequently boosting the capacity efficiency. This entails a paradigm shift in optical node architecture from the currently used optical-bypass to a novel one, entitled, optical-computing-enabled mode, where in addition to the traditional add-drop and cross-connect functionalities, optical nodes are upgraded to account for optical-computing capabilities between the lightpath entities directly at the optical layer. A preliminary study focusing on the optical aggregation operation is examined and early simulation results indicate a promising spectral saving enabled by the optical-computing-enabled mode compared with the optical-bypass one.

关键词： optical-computing-enabled network optical-bypass network in-network optical computing optical-layer Intelligence Routing Wavelength and computing Assignment

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