hi aabid,
first i was to clear there is no component in Optisystem to show an intruder intruding or eavesdropping any optical network.
second that i said that i guess we can model itit.
just tap the power using coupler or combine the power using combiner.
i guess gennerally aatack on any signal leads to increase in the power level of that perticular signal. hence you can detect these signal which are attacked
with regards