In avionics systems, there are two configurations of airborne integrated modular processor platform: one is LRM configured in a centralized cabin and the other is ARINC600 LRU installed on a bracket.As for the two configurations, their characteristics are described respectively.Based on the status quo of airborne optical interconnection technology, its engineering realization modes of optical-electric transformation and high-density interface transmission are introduced.The verification results of current optical interconnection methods are described, and then the direction of future improvement is discussed.