The long cyclic optical fiber grid production device and the long cyclic optical fiber grid production device of two bands which use this

摘要

(57) Abstract The long cyclic optical fiber grid production device and two band long cyclic optical fiber grid production devices which use this are offered. The said device, making the laser light which in the illuminant (100) and the illuminant (100) where ultraviolet ray laser light is generated generates specified angle reflect, the amplitude mask which has the passing field which makes the laser light which the distributed section (106) and the distributed section (106) which make the laser light distribute which passes the glass lens (104) and the glass lens (104) which the laser light path alteration by the mirror (102) and the mirror (102) alteration the path focusing are done and is located with the optical fiber, (112) distributes the optical fiber pass (112) cyclically (108) It includes. Because of this, adjusting the size of the laser beam which is scanned to the optical fiber (112), you can adjust the bandwidth of the long cyclic grid fiber. And, production of the amplitude mask being easy, it is production cost low, marginal damage power is large.