Google Research

Troubleshooting PON networks effectively with Carrier-grade Ethernet and WDM-PON

IEEE Communications Magazine, vol. 52 (2014), pp. 7-13


WDM-PONs have recently emerged to provide dedicated and separated point-to-point wavelengths to individual Optical Network Units (ONTs). In addition, the recently standardised Ethernet OAM capabilities under the IEEE 802.1ag standard and the ITU-T Y.1731 recommendation, together with state-of-the-art Optical Time-Domain Reflectometry (OTDR) provide new link-layer and physical tools for the effective troubleshooting of WDM-PONs. This article proposes an Integrated Troubleshooting Box (ITB) for the effectively combination of both physical and link-layer information into an effective and efficient set of management procedures for WDM-PONs. We show its applicability in a number of realistic troubleshooting scenarios, including failure situations involving either the feeder fibre, one of its branches and even Ethernet links after the ONT.

Research Areas

Learn more about how we do research

We maintain a portfolio of research projects, providing individuals and teams the freedom to emphasize specific types of work