If You Love Coherent, Set it Free: Extending Coherent Optics to the Outside Plant (2024)
By Venk Mutalik Comcast Fellow Amarildo Vieira, Principal Optical Engineer, Comcast Scott Wood, Senior Access Engineer, Comcast Dan Rice, VP Network Architecture, Comcast Bob Gaydos, Comcast Fellow
In this paper, we describe for the first time unleashing the power of coherent optics in the OSP environment. When this capacity is combined with approaches like coherent muxponder (CMP) or Remote Switch on a Pole, the entire network can converge and carry 100Gbps to 10Gbps optical traffic down to individual nodes, businesses, and homes. We describe key technology innovations in bidirectional (BiDi) coherent optics, contrast dual-laser and sub-carrier approaches, point out operational challenges, and present architectures that help converge optical links from the core to the home.
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