Digital Subcarrier-based Point-to-Multipoint Trees in ROADM-based Networks

Inhalt:
Subcarrier-based Point-to-Multipoint (P2MP) connections significantly reduce transceiver costs compared to Point-to-Point but are not natively supported by commercial ROADMs and generally occupy more spectrum. We propose forming linear hub-ended P2MP-trees which can be established by a simple presented ROADM modification while also reducing spectral occupation.