Jamming of optical network operation in physical layer

Abstract

The paper presents the existing possibilities of disrupting the operation of optical/optoelectronic telecommunication networks in a physical layer, distinguishing between passive and active attacks. The latter relay on jamming the operation of the optical network, ranging from the deterioration of the quality of service to the complete prevention of transmission. Passive attacks, on the other hand, are aimed at eavesdropping on transmissions. The paper discusses the various types of attacks, which are specific to the physical layer of optical networks, as well as capabilities of detection and prevention them based on the machine learning approach among others. Finally, a realistic scenario of an active attack by using of a clip-on coupler has been examined in the context of a local area optical network. The results confirm a very disruptive impact on the transmission quality if the power of the jamming signal is comparable with the power of useful signal.