Modern PON architectures

Abstract

Gigabit or Ethernet PON access FFTx networks are being deployed in a number of countries. A number of different concepts and architectures have been used. Architecture selection criteria included the targeted up-and downstream bitrate, the geographical structure of the target area, buried or overhead cabling, planned services and QoS aspects, all under the constraints of the technological state of the art and the economical data. This paper will discuss some of the aspects of different modern PON architectures. There are three basic enhancements in the PON performance: higher bit rates for the end user in up-and downstream direction, higher splitting factors and higher reach. All of the enhancements can be arbitrarily combined, eventually introducing the need for architectural or technological changes.

Securing Passive Optical Networks Against Signal Injection Attacks

“…The optical splitter site is at best completely passive. A set of different architectures for this topic are currently under discussion [3][4]. However, apart from pure WDM-PONs, all future PONs have a high splitting-factor in common.…”