SDN Enabled Dynamically Reconfigurable High Capacity Optical Access Architecture for Converged Services

Access and Metro Network Convergence for Flexible End-to-End Network Design [Invited]

“…Our study shows that in principle about 98% of existing central office/local exchange sites can be bypassed and closed down with this architecture. We propose DWDM over the LR-PON with up to 50 upstream and 50 downstream wavelengths, respectively, in the C-band when using EDFA amplifiers in the LR-PON and many more wavelength channels when other optical bands are opened via the use of linear SOAs [2]. These wavelength channels can be dynamically assigned for different uses (depending on the business and ownership models) and customer demands in both downstream (DS) and upstream (US) directions.…”

“…In the case where the AN comprises the EDFA technology, one EDFA is used for DS and one for US direction. The reader can refer to [2] for a detail description of the EDFA based AN. In the case where the AN is equipped with SOAs, an amplified splitter configuration is used [5].…”

“…It incorporates software defined networking (SDN) controlled Metro-Core nodes with a TDM-DWDM LR-PON connected to a primary core node, with a protection link to a secondary core node. More details on this experimental test-bed setup can be found in [2], [27]. By exploiting the dynamic allocation of DWDM channels, the LR-PON can support the convergence of a number of different user types and service demands, from residential users, which share a 10G PON channel, to business users, with options to rent dedicated 10G PON channels or high capacity 100G point-to-point (P2P) links.…”

Burst-mode FEC performance for PON upstream channels with EDFA optical transients

“…Long-reach passive optical networks (PONs) have been recently demonstrated capable of providing cost-efficient and flexible solutions for service convergence within the access and metro layers of the Internet infrastructure [1][2][3][4][5]. Different PON architectures have been proposed according to the geographical distribution of the customers which are covered by the network.…”

“…Different PON architectures have been proposed according to the geographical distribution of the customers which are covered by the network. In particular, a PON architecture based on a single amplifier node (AN) has been demonstrated in [3,4] to provide efficient solutions for densely populated metropolitan areas. Moreover, a PON architecture based on chains of optical ANs, including erbium doped fiber amplifiers (EDFAs), has been demonstrated in [5] to deliver efficient solutions for sparsely populated rural areas.…”