OPNET Technologies
7255 Woodmont Avenue
Bethesda, MD 20814

Tel: 240-497-3000

Fax: 240-497-3001
E-mail: university@opnet.com
Web: www.opnet.com

OPNET is a registered
trademark of OPNET Technologies

© 2003 OPNET Technologies

University: The George Washington University
Name of sponsoring Professor: Dr. Robert Harrington
Department: School of Engineering and Applied Science

Student: Blas Moreno

OPNET software is used for the following course as a virtual telecommunications and networking simulation and design laboratory

ECE-298 Research Project: participants in the Accelerated Program are required to undertake an in-depth and challenging research project. The topic of the design project will be developed during the program of study with these activities being carried out under the coordination of Dr. Robert Harrington. This activity will represent the final weeks of effort.

Objective: To model a Fiber-to-the-Home network using OPNET Modeler.

Fiber to the home (FTTH) is the ideal fiber-optics architecture for future generations. In this architecture, fiber deployment is carried all the way to the customer’s home. Fiber-based networks have evolved in response to consumer demand for a vast assortment of multimedia services and applications. In an FTTH system, equipment at the head end or CO is interfaced into the public switched telephone network (PSTN) using DS–1s and is connected to a ATM or Ethernet interfaces. All of these signals are then combined onto a single fiber using WDM techniques and transmitted to the end user via a passive or active optical splitter. The splitter is typically placed approximately 30,000 feet from the central office (CO). The split ratio may range from 2 to 32 users and is done without using any active components in the network. The signal is then delivered another 3,000 feet to the home over a single fiber. User nodes, FTTH vendor equipment and single-mode fibers were created in a modern FTTH architecture. Typical Internet user traffic with heavy downloads were run through the nodes to monitor traffic flow. Data statistics such as, packet loss and bandwidth utilization were captured then presented as a case study.