Optical Burst Switching (OBS) is a promising paradigm for the next-generation Internet.In OBS networks

the most straightforward approach to routing a connection is to always choose the same fixed route for a given source-destination pair.One example of such an approach is fixed shortest-path routing.This approach to routing connections is very simple;however

the disadvantage of such an approach is that

if resources (wavelengths) along the path are tied up

it can potentially lead to high blocking probabilities in the dynamic case

or may result in a large number of wavelengths being used in the static case.In this paper

a load-balancing routing mechanism in OBS networks is proposed

which chose a path that balances the assigned wavelengths of every links.Simulations show that

this method is better than shortest-path routing in block probability

and it is nearly as good as shortest-path routing in transmission delay.It can reflect the real-time change of the traffic flow

at the same time;it is good at adapting different topologies.