Fused glass is one of the form of a art glass. The basic idea is to melt the glass in a kiln to create different kind of art works. Hundreds of small pieces can be cut and melt to create an art work in glass. How to create a fused glass? two or more pices of glasses are placed in the kiln and heated until they fuse together in to a single pieces of glasses.
There is also another method of making it called Slumping. In this method, glass I placed over a mould and heated until it slips into the shape. Few of the images are given below for some reference. 
