Wave Division Multiplexing (WDM) technologies may be adopted as integrated interconnection in avionics systems especially as real-time network in their sensor front-end signal processing.In term of the structure of wave-length router which is a key part in airborne WDM network the real-time communication traffic characteristics and priority-queuing were modeled with corresponding methods to calculate parameter features such as burstiness and service latency.A kind of network calculus method for computing event-triggered traffic flows’ end-to-end delays in the worst case was presented under the pressure of higher priority-queuing time-triggered messages.The calculation result obtained could be used in analysis of the time-deterministic performance in airborne multi-hop WDM networks.It was found that the changing of the worst case analysis results was coincided with that of the software simulation result through comparison which proves the effectiveness of the method.