Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments

G. Dabos, S. Pitris, C. Mitsolidou, T. Alexoudi, D. Fitsios, Matteo Cherchi, Mikko Harjanne, Timo Aalto, G.T. Kanellos, N. Pleros

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Abstract

As data centers constantly expand, electronic switches are facing the challenge of enhanced scalability and the request for increased pin-count and bandwidth. Photonic technology and wavelength division multiplexing have always been a strong alternative for efficient routing and their potential was already proven in the telecoms. CWDM transceivers have emerged in the board-to-board level interconnection, revealing the potential for wavelength-routing to be applied in the datacom and an AWGR-based approach has recently been proposed towards building an optical multi-socket interconnection to offer any-to-any connectivity with high aggregated throughput and reduced power consumption. Echelle gratings have long been recognized as the multiplexing block exhibiting smallest footprint and robustness in a wide number of applications compared to other alternatives such as the Arrayed Waveguide Grating. Such filtering devices can also perform in a similar way to cyclical AWGR and serve as mid-board routing platforms in multi-socket environments. In this communication, we present such a 3x3 Echelle grating integrated on thick SOI platform with aluminum-coated facets that is shown to perform successful wavelength-routing functionality at 10 Gb/s. The device exhibits a footprint of 60x270 µm2, while the static characterization showed a 3 dB on-chip loss for the best channel. The 3 dB-bandwidth of the channels was 4.5 nm and the free spectral range was 90 nm. The echelle was evaluated in a 2*2 wavelength routing topology, exhibiting a power penalty of below 0.4 dB at 10-9 BER for the C-band. Further experimental evaluations of the platform involve commercially available CWDM datacenter transceivers, towards emulating an optically-interconnected multi-socket environment traffic scenario.
Original languageEnglish
Title of host publicationOptical Interconnects XVII
EditorsRay T. Chen, Henning Schroder
PublisherInternational Society for Optics and Photonics SPIE
ISBN (Print)978-1-5106-0659-3
DOIs
Publication statusPublished - 1 Jan 2017
MoE publication typeA4 Article in a conference publication
EventOptical Interconnects XVII - San Francisco, United States
Duration: 30 Jan 20171 Feb 2017

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume10109
ISSN (Print)0277-786X

Conference

ConferenceOptical Interconnects XVII
CountryUnited States
CitySan Francisco
Period30/01/171/02/17

Fingerprint

echelle gratings
Echelle
SOI (semiconductors)
Interconnection
Gratings
Routing
platforms
transmitter receivers
footprints
Wavelength
Transceivers
Computing
wavelengths
bandwidth
Arrayed waveguide gratings
Bandwidth
switching circuits
Multiplexing
C band
wavelength division multiplexing

Keywords

  • cyclic wavelength routing
  • Echelle grating
  • mid-board routing platform
  • multi-socket interconnections
  • thick-SOI

Cite this

Dabos, G., Pitris, S., Mitsolidou, C., Alexoudi, T., Fitsios, D., Cherchi, M., ... Pleros, N. (2017). Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments. In R. T. Chen, & H. Schroder (Eds.), Optical Interconnects XVII [1010914] International Society for Optics and Photonics SPIE. Proceedings of SPIE, Vol.. 10109 https://doi.org/10.1117/12.2250772
Dabos, G. ; Pitris, S. ; Mitsolidou, C. ; Alexoudi, T. ; Fitsios, D. ; Cherchi, Matteo ; Harjanne, Mikko ; Aalto, Timo ; Kanellos, G.T. ; Pleros, N. / Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments. Optical Interconnects XVII. editor / Ray T. Chen ; Henning Schroder. International Society for Optics and Photonics SPIE, 2017. (Proceedings of SPIE, Vol. 10109).
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title = "Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments",
abstract = "As data centers constantly expand, electronic switches are facing the challenge of enhanced scalability and the request for increased pin-count and bandwidth. Photonic technology and wavelength division multiplexing have always been a strong alternative for efficient routing and their potential was already proven in the telecoms. CWDM transceivers have emerged in the board-to-board level interconnection, revealing the potential for wavelength-routing to be applied in the datacom and an AWGR-based approach has recently been proposed towards building an optical multi-socket interconnection to offer any-to-any connectivity with high aggregated throughput and reduced power consumption. Echelle gratings have long been recognized as the multiplexing block exhibiting smallest footprint and robustness in a wide number of applications compared to other alternatives such as the Arrayed Waveguide Grating. Such filtering devices can also perform in a similar way to cyclical AWGR and serve as mid-board routing platforms in multi-socket environments. In this communication, we present such a 3x3 Echelle grating integrated on thick SOI platform with aluminum-coated facets that is shown to perform successful wavelength-routing functionality at 10 Gb/s. The device exhibits a footprint of 60x270 µm2, while the static characterization showed a 3 dB on-chip loss for the best channel. The 3 dB-bandwidth of the channels was 4.5 nm and the free spectral range was 90 nm. The echelle was evaluated in a 2*2 wavelength routing topology, exhibiting a power penalty of below 0.4 dB at 10-9 BER for the C-band. Further experimental evaluations of the platform involve commercially available CWDM datacenter transceivers, towards emulating an optically-interconnected multi-socket environment traffic scenario.",
keywords = "cyclic wavelength routing, Echelle grating, mid-board routing platform, multi-socket interconnections, thick-SOI",
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Dabos, G, Pitris, S, Mitsolidou, C, Alexoudi, T, Fitsios, D, Cherchi, M, Harjanne, M, Aalto, T, Kanellos, GT & Pleros, N 2017, Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments. in RT Chen & H Schroder (eds), Optical Interconnects XVII., 1010914, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 10109, Optical Interconnects XVII, San Francisco, United States, 30/01/17. https://doi.org/10.1117/12.2250772

Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments. / Dabos, G.; Pitris, S.; Mitsolidou, C.; Alexoudi, T.; Fitsios, D.; Cherchi, Matteo; Harjanne, Mikko; Aalto, Timo; Kanellos, G.T.; Pleros, N.

Optical Interconnects XVII. ed. / Ray T. Chen; Henning Schroder. International Society for Optics and Photonics SPIE, 2017. 1010914 (Proceedings of SPIE, Vol. 10109).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Pitris, S.

AU - Mitsolidou, C.

AU - Alexoudi, T.

AU - Fitsios, D.

AU - Cherchi, Matteo

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AU - Aalto, Timo

AU - Kanellos, G.T.

AU - Pleros, N.

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N2 - As data centers constantly expand, electronic switches are facing the challenge of enhanced scalability and the request for increased pin-count and bandwidth. Photonic technology and wavelength division multiplexing have always been a strong alternative for efficient routing and their potential was already proven in the telecoms. CWDM transceivers have emerged in the board-to-board level interconnection, revealing the potential for wavelength-routing to be applied in the datacom and an AWGR-based approach has recently been proposed towards building an optical multi-socket interconnection to offer any-to-any connectivity with high aggregated throughput and reduced power consumption. Echelle gratings have long been recognized as the multiplexing block exhibiting smallest footprint and robustness in a wide number of applications compared to other alternatives such as the Arrayed Waveguide Grating. Such filtering devices can also perform in a similar way to cyclical AWGR and serve as mid-board routing platforms in multi-socket environments. In this communication, we present such a 3x3 Echelle grating integrated on thick SOI platform with aluminum-coated facets that is shown to perform successful wavelength-routing functionality at 10 Gb/s. The device exhibits a footprint of 60x270 µm2, while the static characterization showed a 3 dB on-chip loss for the best channel. The 3 dB-bandwidth of the channels was 4.5 nm and the free spectral range was 90 nm. The echelle was evaluated in a 2*2 wavelength routing topology, exhibiting a power penalty of below 0.4 dB at 10-9 BER for the C-band. Further experimental evaluations of the platform involve commercially available CWDM datacenter transceivers, towards emulating an optically-interconnected multi-socket environment traffic scenario.

AB - As data centers constantly expand, electronic switches are facing the challenge of enhanced scalability and the request for increased pin-count and bandwidth. Photonic technology and wavelength division multiplexing have always been a strong alternative for efficient routing and their potential was already proven in the telecoms. CWDM transceivers have emerged in the board-to-board level interconnection, revealing the potential for wavelength-routing to be applied in the datacom and an AWGR-based approach has recently been proposed towards building an optical multi-socket interconnection to offer any-to-any connectivity with high aggregated throughput and reduced power consumption. Echelle gratings have long been recognized as the multiplexing block exhibiting smallest footprint and robustness in a wide number of applications compared to other alternatives such as the Arrayed Waveguide Grating. Such filtering devices can also perform in a similar way to cyclical AWGR and serve as mid-board routing platforms in multi-socket environments. In this communication, we present such a 3x3 Echelle grating integrated on thick SOI platform with aluminum-coated facets that is shown to perform successful wavelength-routing functionality at 10 Gb/s. The device exhibits a footprint of 60x270 µm2, while the static characterization showed a 3 dB on-chip loss for the best channel. The 3 dB-bandwidth of the channels was 4.5 nm and the free spectral range was 90 nm. The echelle was evaluated in a 2*2 wavelength routing topology, exhibiting a power penalty of below 0.4 dB at 10-9 BER for the C-band. Further experimental evaluations of the platform involve commercially available CWDM datacenter transceivers, towards emulating an optically-interconnected multi-socket environment traffic scenario.

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Dabos G, Pitris S, Mitsolidou C, Alexoudi T, Fitsios D, Cherchi M et al. Thick-SOI Echelle grating for any-to-any wavelength routing interconnection in multi-socket computing environments. In Chen RT, Schroder H, editors, Optical Interconnects XVII. International Society for Optics and Photonics SPIE. 2017. 1010914. (Proceedings of SPIE, Vol. 10109). https://doi.org/10.1117/12.2250772