Title :
Structure of fiber gratings directly written by infrared femtosecond laser
Author :
Martinez, Amós ; Dubov, Michael ; Khrushchev, Igor ; Bennion, Ian
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham
Abstract :
Structural modification in gratings inscribed point-by-point by a femtosecond laser is investigated using quantitative phase microscopy. The gratings present a central region with a depressed refractive index surrounded by an outer corona with increased index.
Keywords :
Bragg gratings; high-speed optical techniques; laser materials processing; optical fibre fabrication; refractive index; depressed refractive index; fiber grating structure; infrared femtosecond laser; point-by-point inscription; quantitative phase microscopy; structural modification; Bragg gratings; Corona; Fiber gratings; Fiber lasers; Microscopy; Phase measurement; Photonics; Refractive index; Resonance; Ultrafast optics; (320.2250) Femtosecond phenomena; (350.2770) Gratings;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4628601
