Lightpath blocking analysis for optical networks with ROADM intra-node add-drop contention

Li, Yongcheng; Gao, Li; Bose, Sanjay K.; Shao, Weidong; Wang, Xiaoling; Shen, Gangxiang

doi:10.1007/s11432-016-0379-8

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…The use of optical access interconnections is an effective means for achieving efficient collaboration among distributed micro data centers. Reconfigurable optical add and drop multiplexer (ROADM) is a promising device to realize dynamic lightpath provision in the datacenter networks [48]. Cloud computing [49] is an information technology (IT) paradigm that enables ubiquitous access to shared pools of configurable system resources and higher-level services that can be rapidly provisioned with minimal management effort, often over the Internet.…”

Section: Optical Plus Computing-achieve Collaboration Between Edge Comentioning

confidence: 99%

Towards converged, collaborative and co-automatic (3C) optical networks

Ji¹,

Zhang²,

Wang³

et al. 2018

Sci. China Inf. Sci.

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The interconnection of all things is developing a new diagram of future information networks. However, it is difficult to realize future applications with only one single technique. Collaboration between multiple advanced techniques is leading the way for the development of future information networks. Optical communication is an enabling technique to achieve high speed, long reach, and low latency communication, which plays an important role on the transformation of information networks. To achieve these advantages that caters to the characteristics of future information networks, collaboration of multiple advanced techniques with optical, which is called "optical plus X", could realize the vision of "all things connected with networks". In this paper, we focus on the collaboration between optical networks with other techniques, mainly discuss four representative aspects, which are "optical plus IP", "optical plus radio", "optical plus computing", and "optical plus AI". We discuss the challenges, timely works, and developing trends. Finally, we give the future visions for optical network towards a collaborative, converged and co-automatic optical network. Keywords 5G optical transport networks, edge computing optical networks, IP over optical networks, AI-assisted optical networks, 3C optical networks

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Section: Optical Plus Computing-achieve Collaboration Between Edge Comentioning

confidence: 99%

Towards converged, collaborative and co-automatic (3C) optical networks

Ji¹,

Zhang²,

Wang³

et al. 2018

Sci. China Inf. Sci.

View full text Add to dashboard Cite

show abstract

Add/Drop Flexibility and System Complexity Tradeoff in ROADM Designs

Lin

2022

IEEE INFOCOM 2022 - IEEE Conference on Computer Communications

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Colorless, partially directionless, and contentionless architecture for high-degree ROADMs

Lin

Zong

et al. 2022

J. Opt. Commun. Netw.

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With the rapid growth of Internet traffic, there can be multiple pairs of bi-directional fibers on a network link. This leads to the need for high-degree reconfigurable optical add/drop multiplexers (ROADMs) in an optical network. However, this high-degree requirement poses new challenges to ROADMs since it is challenging and expensive for a wavelength selective switch (WSS), a key switching component in a ROADM, to expand its size. Therefore, a common strategy is to use small-size WSSs to build a high-degree ROADM. In this paper, we design a novel colorless, partially directionless, and contentionless (CpDC) ROADM architecture, in which the sizes of WSSs can be significantly reduced by partially sacrificing the directionless feature of a ROADM. The partially directionless feature may degrade the switching performance of a ROADM. Thus, to tackle this issue, we also propose an interconnection pattern for the ROADM backplane to effectively connect fiber links and add/drop modules. An analytical model is developed to evaluate the lightpath blocking performance of a single CpDC ROADM. Efficient routing, fiber, wavelength, and add/drop port assignment (RFWPA) algorithms (i.e., the shortest-path-based and waveplane-based algorithms) are also developed for lightpath establishment in an optical network made up of CpDC ROADMs, in which two wavelength selection strategies [i.e., non-interconnection aware (NIA) and interconnection aware (IA)] are further proposed. Simulation studies show that, while these achieve almost the same lightpath blocking performance as conventional CDC ROADMs, CpDC ROADMs are more effective from considerations of cost, insertion loss, and node volume. The waveplane-based RFWPA algorithm with the IA strategy is also found to be the most effective for lightpath provisioning in an optical network made up of CpDC ROADMs.

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Lightpath blocking analysis for optical networks with ROADM intra-node add-drop contention

Cited by 3 publications

References 40 publications

Towards converged, collaborative and co-automatic (3C) optical networks

Towards converged, collaborative and co-automatic (3C) optical networks

Add/Drop Flexibility and System Complexity Tradeoff in ROADM Designs

Colorless, partially directionless, and contentionless architecture for high-degree ROADMs

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