A study on 400ZR and flexible-grid spacing for data-center interconnect transmission

Ahmad Abdo; Khaled Maamoun; Priyanth Mehta; Timothy Creasy; Claude D'Amours

doi:10.1117/12.2546611

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31 January 2020 A study on 400ZR and flexible-grid spacing for data-center interconnect transmission

Ahmad Abdo, Khaled Maamoun, Priyanth Mehta, Timothy Creasy, Claude D'Amours

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Proceedings Volume 11308, Metro and Data Center Optical Networks and Short-Reach Links III; 113080R (2020) https://doi.org/10.1117/12.2546611
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

In the context of standardized 400ZR, we study the adjacent channel power ratio (ACPR) as a measure for quantifying the impact of pluggables in flexible-grid dense wavelength division multiplexing (DWDM) networks. Using Monte- Carlo simulations, the ACPR is calculated under standardized roll-off factors for a dual-polarization 16QAM channel at 59.8GBaud. The ACPR is shown to adequately represent the impact of linear cross-talk as a function of channel spacing and channel power. From 75GHz (DWDM) to 59GHz (Super-Nyquist) optical transmission, we report a universal approach for specifying the penalties of flexible-grid pluggables on a channel’s required signal-to-noise ratio (SNR) and timing recovery.

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Ahmad Abdo, Khaled Maamoun, Priyanth Mehta, Timothy Creasy, and Claude D'Amours "A study on 400ZR and flexible-grid spacing for data-center interconnect transmission", Proc. SPIE 11308, Metro and Data Center Optical Networks and Short-Reach Links III, 113080R (31 January 2020); https://doi.org/10.1117/12.2546611

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