Title :
A flexible fabrication technique of long-period fiber gratings using a tilted amplitude mask
Author :
Mizunami, Toru ; Kawashima, Hideo ; Hayashi, Akihiko
Author_Institution :
Dept. of Electr. Eng., Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
A method to control resonant wavelengths of a long-period fiber grating is proposed. An amplitude mask is tilted relative to a fiber, and the fiber is irradiated through the mask. Using a mask with a grating period of 460 μm and a KrF excimer laser, a tuning range of 329 nm was obtained for a resonant cladding mode by tilting up to 45°. It has been possible to fabricate a long-period fiber grating having resonance at any wavelength in the range 1.2-1.6 μm using only an amplitude mask.
Keywords :
diffraction gratings; laser materials processing; masks; optical fibre fabrication; optical fibre losses; optical tuning; 1.2 to 1.6 micron; 460 micron; KrF excimer laser; flexible fabrication technique; long-period fiber gratings; mask grating period; resonant cladding mode; resonant wavelength control; tilted amplitude mask; transmission loss; tuning range; Chemical sensors; Erbium-doped fiber lasers; Fabrication; Fiber gratings; Laser modes; Laser tuning; Optical fiber sensors; Optical fibers; Resonance; Temperature sensors;
Conference_Titel :
Fibre and Optical Passive Components, 2002. Proceedings of 2002 IEEE/LEOS Workshop on
Print_ISBN :
0-7803-7556-4
DOI :
10.1109/FOPC.2002.1015810
