Single optical fiber based multi-ring laser beam device and method of manufacturing the same

摘要

The present invention relates to a single optical fiber based multi-ring laser beam device and a method of manufacturing the same. According to the present invention, a single optical fiber can be irradiated with the laser beam spread radially from the longitudinal direction of the optical fiber in two or more rings by at least two or more step processes. Thereby, if two ring-shaped light profiles are used rather than one ring-shaped light profile, the energy distribution effect can reduce the energy burden on the glass tube, thereby avoiding the risk of breakage of the glass tube And can provide the effect of safe treatment. In addition, according to one embodiment of the present invention, if two rings are made of one optical fiber rather than two optical fibers, unnecessary process steps are eliminated, manufacturing is easy, and cost can be reduced. The effect of providing According to another embodiment of the present invention, by providing two or more ring-shaped light profiles with one optical fiber, the size of the glass tube can be reduced.