WDM mid-board optics for chip-to-chip wavelength routing interconnects in the H2020 ICT-STREAMS

G. T. Kanellos*, N. Pleros

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

14 Citations (Scopus)


Multi-socket server boards have emerged to increase the processing power density on the board level and further flatten the data center networks beyond leaf-spine architectures. Scaling however the number of processors per board puts current electronic technologies into challenge, as it requires high bandwidth interconnects and high throughput switches with increased number of ports that are currently unavailable. On-board optical interconnection has proved the potential to efficiently satisfy the bandwidth needs, but their use has been limited to parallel links without performing any smart routing functionality. With CWDM optical interconnects already a commodity, cyclical wavelength routing proposed to fit the datacom for rack-to-rack and board-to-board communication now becomes a promising on-board routing platform. ICT-STREAMS is a European research project that aims to combine WDM parallel on-board transceivers with a cyclical AWGR, in order to create a new board-level, chip-to-chip interconnection paradigm that will leverage WDM parallel transmission to a powerful wavelength routing platform capable to interconnect multiple processors with unprecedented bandwidth and throughput capacity. Direct, any-to-any, on-board interconnection of multiple processors will significantly contribute to further flatten the data centers and facilitate east-west communication. In the present communication, we present ICT-STREAMS on-board wavelength routing architecture for multiple chip-to-chip interconnections and evaluate the overall system performance in terms of throughput and latency for several schemes and traffic profiles. We also review recent advances of the ICT-STREAMS platform key-enabling technologies that span from Si in-plane lasers and polymer based electro-optical circuit boards to silicon photonics transceivers and photonic-crystal amplifiers.

Original languageEnglish
Title of host publicationOptical Interconnects XVII
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
ISBN (Electronic)9781510606593
Publication statusPublished - 1 Jan 2017
EventOptical Interconnects XVII - San Francisco, United States
Duration: 30 Jan 20171 Feb 2017


ConferenceOptical Interconnects XVII
Country/TerritoryUnited States
CitySan Francisco


  • AWGR
  • Cyclical routing
  • Mid-board transceivers
  • Optical interconnects
  • WDM routing


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