Research of Traffic Management in Fttx Optical Communication Systems

Abstract

The paper presents an overview of widely accepted passive optical networks (PONs), and provides the results of comparative OPTSIM simulation for PON technological facilities involving optical layers, with the aim to reveal fiber-to-the-x (FTTx) technologic solutions. Traffic load is simulated over a PON optical layer using the OPNET Modeler to determine potential advantages and drawbacks of the proposed FTTx solution with PON elements in the access networks. The authors show that the optimal transmission speed for PON FTTx would lie in the range 1.25-5.0 Gbit/s with a standard PON architecture, which could be raised to 10 Gbit/s, however in this case we have to change the end user's equipment. In standards that specify the PON's functionality two distances: 10 km and 20 km are indicated. Our simulation shows that, after upgrading the receiver electrical filter, 10 Gbit/s transmissions over 40 km could be reached.

Application of the erbium-doped fiber amplifier (EDFA) in wavelength division multiplexing (WDM) transmission systems

“…The capacity of fiber optical communication systems has undergone enormous growth during the last few years in response to huge capacity demand for data transmission (Cisco Systems, 2010). With the available WDM components, commercial systems transport more than 100 channels over a single fiber (Bobrovs et al, 2009). Hence, the installed systems of the type can be upgraded many times without adding a new fiber, which makes it possible to build inexpensive WDM systems with much greater capacity (Azadeh, 2009).…”

Comparison of Semiconductor Optical Amplifier and Discrete Raman Amplifier Performance in DWDM Systems

“…In the last decade the demand on high capacity transmission has increased rapidly. Thanks to this trend a growing amount of research has been done on Dense Wave Division Multiplexing (DWDM) transmission systems to achieve a higher transmission capacity over greater distances [1,2]. To achieve longer transmission distances often in-line optical signal amplification is applied.…”