Investigation of nonlinear optical effects

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Dr. Gerhátné Udvary Eszter
Department of Broadband Infocommunications and Electromagnetic Theory

Today’s new generation multimedia services and internet technologies (Triple Play, HDVideo Streaming, online multiplayer games) increase the demand for high-speed, high-capacity networks. The growing number of users and the rising need for even faster connection means that service providers must consider the above factors when planning future networks or during upgrades. These demands have so far been successfully met in DWDM-based fiber-optic networks by increasing the source data rate and/or increasing the number of channels in the system.

Due to the rapid progress in fiber technology, the most important limiting factors of early networks (attenuation, dispersion) have become easily compensatable by today’s fibers and devices.

By increasing the number of channels on a given bandwidth, the distance of adjacent channels must be decreased. Using today’s standard fibers, the phenomena of Four-Wave Mixing has become the most crucial limiting factor for reliable fiber communication in DWDM systems.

This paper deals with this nonlinear effect, and presents a mathematical implementation of its model using Mathematica 8.0 and presents simulated results for comparison generated by VPI TransMissionMaker 8.5, an optical simulation software intended for acedemic use. Furthermore, considerations of the literature are revised and also presented.


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