2. System Requirements

  1. Dave Hood and
  2. Elmar Trojer

Published Online: 6 JUL 2012

DOI: 10.1002/9781118156070.ch2

Gigabit-Capable Passive Optical Networks

Gigabit-Capable Passive Optical Networks

How to Cite

Hood, D. and Trojer, E. (2012) System Requirements, in Gigabit-Capable Passive Optical Networks, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118156070.ch2

Publication History

  1. Published Online: 6 JUL 2012
  2. Published Print: 21 MAR 2012

ISBN Information

Print ISBN: 9780470936870

Online ISBN: 9781118156070



  • dynamic bandwidth assignment;
  • gigabit-capable passive optical networks (G-PON);
  • optical line terminal (OLT);
  • optical network unit (ONU)


This chapter provides an overview of power-splitting PONs and optical network considerations including split ratio, maximum reach, differential reach and PON protection. It then focuses on coexistence with future generations. The chapter discusses types of optical network unit (ONU) and ONU powering. Finally it presents introduction to dynamic bandwidth assignment, quality of service, security and management. G-PON is built on a single-fiber optical network whose topology is a tree. All ONUs must satisfy regulatory requirements for electromagnetic interference (EMI) generation and operator requirements for EMI tolerance. The optical line terminal (OLT) is the interface between the PON and the telecommunications aggregation or core network. Conceptually, it is located in a central office, but in practice it may be located in a controlled environment vault (CEV) or an outdoor cabinet, as a way to extend the reach of the PON.

Controlled Vocabulary Terms

Channel allocation; optical network units; passive optical networks