Gigabit Access Passive Optical Network Using Wavelength Division Multiplexing—GigaWaM

Abstract

This paper summarizes the research and technical achievements done under the EU project GigaWaM. The goal of this project was to develop a cost-effective solution that can meet the increasing bandwidth demands in access networks. The approach was to use a novel wavelength division multiplexing passive optical network (WDM-PON) architecture that can deliver symmetric 1 Gb/s to 64 users over 20 km standard single mode fiber using the L and C bands for down and upstream, respectively. During the course of the project, a number of key enabling technologies were developed including tunable transceivers, athermal 50 GHz spaced arrayed waveguide grating multiplexer devices, novel hybridization technologies for integration of passive and active electro-optic devices, and system-level algorithms that ensure the quality of service. The outcome of the project proved a reliable, cost-effective, flexible, and upgradable WDM-PON solution, achieving per-user datarates of 2.5 and 10 Gb/s for up and downstream, respectively. The proposed solution is not only suitable for access networks, but also for metro aggregation and mobile backhaul.

Resilient architectures for free space optical wireless interconnection systems

“…Traditional Time Division Multiplexing (TDM) Passive Optical Networks (PONs) and traditional WDM PONs have been used to provide reliable, high performance and low maintenance and low power consumption connections with end users at the last mile of information and communication networks 37 . Using these passive networks in addition to three improved architectures was proposed for connecting end points in data centre networks with arbitrary and high bandwidth requirements 38 .…”

Passive Optical Networks: Introduction

“…GigaWaM project was proposed in 2008 [80] and it was concluded in 2012 [81]. Figure 10 shows the GigaWaM system overview [81]. It can potentially deliver per-user datarates of 2.5 Gb/s upstream and 10 Gb/s downstream to 64 end-users over 26 km SSMF.…”

Fiber Link Health Detection and Self-Healing Algorithm for Two-Ring-Based RoF Transport Systems

“…Radio over fiber (RoF) transport systems have been developed to support broadband wireless communication technologies, such as 5G and WiGig. Typically, RoF transport systems in ring topology can utilize wavelength division multiplexing (WDM) technology to extend the network capacity [1,2] and to provide a better self-healing function compared with tree-topology architectures to overcome fiber line failures [3,4,5,6]. However, if the ring-topology comprises a traditional optical add/drop multiplexer (OADM) [7,8], the transport system may be unable to exercise its self-healing function when a fiber link failure is present because both the added and passed optical signals in an OADM are transmitted in the same direction of the fiber ring [9].…”