| 摘要 |
An apparatus for manufacturing a long-period fiber grating and a two-band long-period fiber grating manufacturing apparatus using the same are provided. The apparatus includes a light source for generating the UV laser light, a mirror for reflecting the UV laser light generated in the light source at a predetermined angle and changing the traveling path thereof, a lens for focusing the laser light whose traveling path is changed by the mirror, a dispersing unit for dispersing the laser light passed through the lens, and an amplitude mask positioned between the dispersing unit and the optical fiber, and having a transmission region in which the dispersed laser light is periodically transmitted to the optical fiber. The bandwidth of a long-period fiber grating can be adjusted by adjusting the size of a laser beam irradiated into an optical fiber. Also, amplitude masks can be easily manufactured at low cost and damage threshold power thereof is high. |
