The profile of common free output diode lasers is asymmetric (elliptic) Gaussian beam with a large divergence and nonuniform distribution. In most applications, it is necessary to shape and smooth the beam,there are two common shaping methods: optical lens shaping and fiber coupling shaping. Using lens could change the beam spot to rectangle but could not make it uniform , the space location for lens could not be removed flexibly. Using fibers, the output beam profile is rounded and uniform, the beam quality could improved, and the fiber coupling is an important means to realize flexible transmission which is popular in Medical, Industry areas. BWT Beijing has focused on fiber coupling diode lasers for over 15 years, and became the famous and professional manufacturers in international.