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Adaptive Coherent Receiver Settings for Optimum Channel Spacing in Gridless Optical Networks

Author

Listed:
  • Ahmad Abdo

    (School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada)

  • Sadok Aouini

    (Ciena Corporation, Ottawa, ON K2K 0L1, Canada)

  • Bilal Riaz

    (Ciena Corporation, Ottawa, ON K2K 0L1, Canada)

  • Naim Ben-Hamida

    (Ciena Corporation, Ottawa, ON K2K 0L1, Canada)

  • Claude D’Amours

    (School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada)

Abstract

In this paper, we propose a novel circuit and system to optimize the spacing between optical channels in gridless (also called flexible-grid or elastic) networking. The method will exploit the beginning-of-life link margin by enabling the channel to operate in super-Nyquist dense wavelength division multiplexing mode. We present the work in the context of software-defined networking and high-speed optical flexible-rate transponders. The clock recovery scheme allows the mitigation of jitter by decoupling the contribution of high-jitter noise sources from the clock recovery loop. The method and associated algorithm are experimentally verified where a spectrum gain of up to 2 GHz in spacing between two channels in the Media Channel (MC) is obtained compared to conventional clocking strategies. We showed that the improvement is equivalent to increasing throughput, in a data-center interconnect scenario, by up to 300 giga-bits per second per route.

Suggested Citation

  • Ahmad Abdo & Sadok Aouini & Bilal Riaz & Naim Ben-Hamida & Claude D’Amours, 2019. "Adaptive Coherent Receiver Settings for Optimum Channel Spacing in Gridless Optical Networks," Future Internet, MDPI, vol. 11(10), pages 1-13, September.
    • Handle: RePEc:gam:jftint:v:11:y:2019:i:10:p:206-:d:270468
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    Citations

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    Cited by:

    1. Ahmad Abdo & Claude D’Amours, 2020. "Adaptive Pre/Post-Compensation of Cascade Filters in Coherent Optical Transponders," Future Internet, MDPI, vol. 12(2), pages 1-18, January.
    2. Ahmad Abdo & Xueyang Li & Md Samiul Alam & Mahdi Parvizi & Naim Ben-Hamida & Claude D’Amours & David Plant, 2019. "Partial Pre-Emphasis for Pluggable 400 G Short-Reach Coherent Systems," Future Internet, MDPI, vol. 11(12), pages 1-10, December.

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