Title :
Efficient Bragg grating fabrication in germanium-rich fibre by high-intensity femtosecond 264 nm irradiation
Author :
Slattery, S.A. ; Nikogosyan, D.N. ; Plougmann, N. ; Sorensen, H.R. ; Kristensen, M.
Author_Institution :
Dept. of Phys., Univ. Coll. Cork
Abstract :
In this work we study FBG recording in a highly-nonlinear fibre (HNLF), employing 264 nm 220 fs (FWHM) pulses with a peak intensity of around 180 GW/cm2. For comparison, FBG inscription was also done with a conventional 248 nm KrF excimer laser with an incident pulse intensity of 4 MW/cm2 and a pulse duration of 25 ns. The lengths of the recorded gratings were 3 and 5 mm for 264 and 248 nm radiations, respectively
Keywords :
Bragg gratings; germanium; high-speed optical techniques; laser materials processing; optical fibre fabrication; 248 nm; 25 ns; 264 nm; 3 mm; 5 mm; FBG inscription; FBG recording; Ge; KrF; efficient Bragg grating fabrication; excimer laser; germanium-rich fibre; high-intensity femtosecond irradiation; highly-nonlinear fibre; incident pulse intensity; Bragg gratings; Fabrication; Fiber gratings; Fiber lasers; Laser excitation; Laser theory; Optical pulses; Pulse modulation; Refractive index; Tin;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Conference_Location :
Munich
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568325
