Next-Generation Optical Access Networks

Next Generation Optical Networks

A mesh optical network consists of several cross-connecting nodes (Figure 6.1). Some nodes are O-E-O and some all optical. Large nodes are capable of carrying aggregate traffic at extremely high capacities, and also to add–drop and groom traffic. Each interconnecting link consists of many dual fibers (one fiber per direction), and they include signal conditioners (equalization and regeneration)...

Enabling next Generation Ethernet Access with Ethernet Passive Optical Networks

This article describes Ethernet Passive Optical Networks (EPONs), an emerging local subscriber access architecture that combines low cost point-to-multipoint fiber infrastructure with Ethernet. EPONs are designed to carry Ethernet frames at standard Ethernet rates. EPONs use a single trunk fiber that extends from a central office to a passive optical splitter, which then fans out to multiple op...

Reliability versus Cost in Next Generation Optical Access Networks

X Next Generation Optical Access Networks : from TDM to WDM

Network infrastructure plays a key role in the success of added services and in user satisfaction. It is widely accepted that Passive Optical Networks (PON) are the most promising, cost-effective, and high-performance access network solutions. Access networks are also commonly referred to as either ‘the last mile’ by the operators, or ‘the first mile of the network’ in IEEE terminology. The ter...

Technologies for Next Generation Optical Access Network

Introduction of the GE-PON system has accelerated the use of FTTH in Japan, changing the access network from simply an Internet connection to a social infrastructure that provides services directly related to daily life, such as IP telephone service. Mitsubishi Electric has the largest share of the GE-PON market in Japan and is now working on the next generation GE-PON. The role of the NGN is b...