Title :
Fabrication of fiber Bragg grating by femtosecond laser interferometry
Author :
Oi, Ken ; Barnier, F. ; Obara, Minoru
Author_Institution :
Dept. of Electron. & Electr. Eng., Keio Univ., Kanagawa, Japan
Abstract :
The aim of this study is to fabricate and evaluate the transmission and reflection of FBGs induced by focused femtosecond laser interferometry. The two beams are focused inside the core, and the colliding angle is set in order to obtain an 2nd order Bragg reflection at around 1.45 μm. The laser output power is varied using attenuators and adjusted not to reach the optical breakdown threshold at the focal spot. The transmission spectrum is examined simultaneously as the fabrication process is executed. The reflection spectrum is analyzed after fabrication has been completed
Keywords :
Bragg gratings; high-speed optical techniques; laser beam machining; light interferometry; optical fibre fabrication; femtosecond laser micromachining; fiber Bragg grating; focused femtosecond laser interferometry; optical fabrication; reflection spectrum; second order Bragg reflection; transmission spectrum; Bragg gratings; Fiber gratings; Fiber lasers; Laser beams; Optical attenuators; Optical device fabrication; Optical interferometry; Optical reflection; Power lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969045
