Title :
GaAs/GaAlAs RIB waveguide grating filters for λ = 1.5μm
Author :
Yi-Yan, A. ; Carru, H. ; Correc, P. ; Chandouineau, J.P. ; Dugrand, L. ; Carre, M.
Author_Institution :
Centre National d´Etudes des Telecommunications, Laboratoire de Bagneux, Bagneux, France
Abstract :
First-order Bragg grating filters have been realised in GaAs/GaAlAs rib waveguides for operation at λ ˜ 1.5μm. Singlemode devices with rib widths of 2 to 5 μm and incorporating a 2.5 mm length of 225 nm period grating have been evaluated using a tunable T1:KCl colour-centre laser. Rejection ratios of 95% to 39% and 3dB bandwidths of 3.5 Ã… to 7.9 Ã… have been measured.
Keywords :
III-V semiconductors; aluminium compounds; diffraction gratings; gallium arsenide; integrated optics; optical communication equipment; optical filters; optical waveguide components; 1.5 micron; 2 to 5 micron; 225 nm; Bragg grating filters; GaAs-GaAlAs; III-V semiconductors; KCl:Tl tunable colour centre laser; first-order type; nanometre grating period; optical communication equipment; rib waveguide; rib widths; single mode devices;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870446
