Service Provisioning in Wavelength-Switched Optical Networks Based on P2MP Transceivers (Invited Paper)

We address the challenge of provisioning dynamic requests in a wavelength-switched optical network (WSON) built with coherent point-to-multipoint transceivers (P2MP-TRXs) in this work. An efficient heuristic for transceiver, routing, and spectrum assignment (TRSA) is proposed, along with a subcarrier (SC) level proactive defragmentation method that can further enhance the provisioning performance through reconfiguring the spectrum allocations of leaf P2MP-TRXs. Extensive simulations confirm the effectiveness of our proposals.