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

Volume

2

fYear

2001

fDate

2001

Firstpage

776

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE

Conference_Location

San Diego, CA

ISSN

1092-8081

Print_ISBN

0-7803-7105-4

Type

conf

DOI

10.1109/LEOS.2001.969045

Filename

969045