Title :
Strong Bragg gratings for WDM devices in non-sensitised low-loss Ge-doped waveguides
Author :
Jouanno, J.-M. ; Hubner, J. ; Pedersen, J.E. ; Kromann, R. ; Feuchter, T. ; Kristensen, M.
Author_Institution :
Microelektronik Centret, Tech. Univ. Denmark, Lyngby, Denmark
fDate :
11/7/1996 12:00:00 AM
Abstract :
Bragg gratings have been written with 193 nm UV-light through a phase mask in low-loss germanium-doped buried waveguides. Without any kind of sensitisation, reflectivities of up to 99.98% and background rejection better than 22 dB have been obtained for 20 mm long Bragg gratings
Keywords :
birefringence; diffraction gratings; integrated optics; optical communication equipment; optical fabrication; optical losses; optical waveguides; wavelength division multiplexing; 193 nm; 20 mm; Bragg gratings; Ge-doped waveguides; WDM devices; buried waveguides; nonsensitised low-loss waveguides; phase mask;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19961446
