The emphasis is on the characteristics of WDM fiber optic network, the principle of optical switching by selecting wavelength. At last the WDM star and ring networks are addressed as an example.

A two-layer parallel optical interconnection network has been designed. The top layer was a star network, which was made up of digital routing nod, node computer and optical network interface CARDS.

A real-time Ultrahigh-speed optical fiber network design concept was proposed for fly-by-light aircraft in this paper. The advantages of the star and ring topology structure were integrated.