Rene Marcel Schmogrow
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Open Optical Communication Systems at a Hyperscale Operator
Matt Newland
Journal of Optical Communications (2020)
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Open optical networks present a variety of benefits such as single vendor independence and the opportunity to select best in class devices for each individual role. In this paper we review two degrees of open optical networks, namely ones with transponder-line system and line system-line system interoperability. In this context we discuss Google's experiences with respect to optical link design, software, and controls, deployment, and operation.
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Opportunities and Challenges of C+L Transmission Systems
Matt Newland
IEEE/OSA Journal of Lightwave Technology (2019)
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C+L open line systems represent a cost-effective way to scale backbone network capacity. In this article, we review challenges and opportunities for C+L line systems stemming from Google's experience in designing, deploying, and operating a global C+L open optical network. We discuss business, operational, and technical aspects of C+L systems, and describe best practices for designing C+L links. Finally, we compare C and C+L systems, showing how the latter not only conceal capacity penalties but can even increase, depending on the deployed fiber types, the total system capacity with respect to two parallel C-band only systems.
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