Research Of The ROADM Applicative Scheme In The OTN

With the global context, the rapid popularization of the Internet, an endless stream of emerging network applications, IP-class business-oriented data traffic has been gradually replacing traditional voice traffic into the mainstream of telecommunications network traffic. The telecommunications network, but also from traditional voice telephone network, the transition to data-centric telecommunications network business. With sudden as the main characteristics of the operational requirements of a new generation of optical transport network (OTN) with dynamic bandwidth allocation, business traffic shaping, routing, network failure protection and recovery capabilities.Reconfigurable Optical Add-Drop Multiplexing (ROADM) in recent years, the rise of a new type of optical network node technology, which in the traditional WDM network nodes based on the OADM technology, through a series of improvements, so that it has a flexible optical wavelength scheduling ability is OTN technology in the optical domain the ideal form of network nodes.The purpose of this study, designed for ROADM applications in the OTN in the study, in different ROADM principle of contrast between the studies, for different OTN network environment, finding the best form of network nodes. This first chapter of the ROADM technology, the background analysis shows the necessity of using this technology nodes; second chapter a brief description of ROADM application environments, from the WDM transmission network to the evolution of OTN transport network; third chapter describes the principle of ROADM technology, and characteristics; fourth chapter comparative analysis of ROADM+OTN form of a network as opposed to the traditional advantages of WDM networks, for ROADM applications in the OTN in a comparative analysis, in the form of existing equipment based on the proposed form of hybrid ROADM equipment vision; fifth chapter describes the test for Service Fulfillment in OTN network with ROADM nodes;sixth chapter summarizes the paper, and ROADM technology, the prospects for future development.