Title :
Electro-optic modulation in germanosilicate fibre with UV-excited poling
Author :
Fujiwara, T. ; Wong, D. ; Zhao, Y. ; Fleming, S. ; Poole, S. ; Sceats, M.
Author_Institution :
Opt. Fibre Technol. Centre, Sydney Univ., NSW, Australia
fDate :
3/30/1995 12:00:00 AM
Abstract :
The authors report what is, to their knowledge, the highest electro-optic effect measured in a germanosilicate fibre ever reported. The electro-optic effect based on a permanent second-order nonlinearity has been induced by UV-excited poling at 193 nm with an electric field >8×105 V/cm. Polarisation dependence of the VπL product in a birefringent fibre has been observed, and the lowest VπL product obtained for the TE mode of 32 Vcm, comparable to that based on r22 of LiNbO3, has been measured at 633 nm with a phase modulation at frequencies up to 5 MHz
Keywords :
birefringence; electro-optical modulation; germanium compounds; nonlinear optics; optical fibres; radiation effects; silicon compounds; 193 nm; 5 MHz; 633 nm; SiO2-GeO2; TE mode; UV-excited poling; birefringent fibre; electro-optic modulation; germanosilicate fibre; permanent second-order nonlinearity; phase modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950384