Experimental Study of Adaptive Loading in IM/DD OFDM Using In-band Optical Sub-Carrier SNR Monitoring

The ADRENALINE testbed: An SDN/NFV packet/optical transport network and edge/core cloud platform for end-to-end 5G and IoT services

“…In a scenario with multiple OpenStack controller, OpenStack API can be used as the southbound interface (SBI) of the cloud orchestrator, as well as the northbound interface (NBI) to the tenants. We refer to this recursive hierarchical architecture as OpenStack cascading and has been preliminary deployed in [14]…”

“…Finally, the platform enables to adopt integrated devices (embedded in a single substrate) implementing the transceiver modules, for a significant reduction in terms of cost, energy consumption and equipment footprint. Further details and results, in terms of capacity/performance, of a programmable S-BVT with cost-effective front-ends (adopting direct detection) available in the platform, are summarized in Table 1 [2], [14][15][16][17]. A maximum data rate of 60 Gb/s per flow/slice and polarization state is achieved in back to back (B2B) configuration.…”

Demonstration of Adaptive SDN Orchestration: A Real-Time Congestion-Aware Services Provisioning Over OFDM-Based 400G OPS and Flexi-WDM OCS

“…The spectrum analysis was performed by the signal processing module, which was also in charge of deriving the corresponding performance parameters that fed the monitoring agents. This allowed to suitably configure the different domain network resources, including the parameters of the transponders, according to the signal quality [11]. The SDN orchestrator was based on the ABNO architecture (Fig.…”

Optical Performance Monitoring Systems in Disaggregated Optical Networks

“…In fact, the existing optical performance monitoring techniques are either valid for specific transmission technologies [3] (e.g. those based on polarization nulling are not suitable for polarization multiplexed signals) or exhibit a limited range of functions for extracting the figures of merit that will be employed to configure the different network resources, including the parameters of the transceivers [6]. Thus, a key challenge is the advancement in optical performance monitoring techniques in order to create a common subsystem that is agnostic to the optical signal waveforms (which may feature different multiplexing schemes Figure 1.…”

“…(a) Generic scheme for the proposed monitoring probe. (b) Sample spectrum acquired for SSB-OFDM using uniform loading and (c) employing adaptive modulation [6]. and modulation formats) and capable to provide the suitable figures of merit to the control, orchestration and management planes.…”