Title :
Long period copper-coated grating as an electrically tunable wavelength-selective filter
Author :
Duhem, O. ; DaCosta, A. ; Henninot, J.F. ; Douay, M.
Author_Institution :
Lab. de Phys. Chimie des Interfaces et Appl., Artois Univ., Lens, France
fDate :
6/10/1999 12:00:00 AM
Abstract :
For the first time, the behaviour of long period gratings with a metal coating has been investigated. It is shown that, in the case of a copper coating, couplings become slightly shifted and attenuated. By applying a DC current to the coating, a shift -4 nm is obtained for a resistive power close to 0.5 W. This result suggests that long period gratings are more attractive than Bragg gratings for realising tunable wavelength-selective filters based on the electrical heating of a fibre through a metal coating
Keywords :
copper; diffraction gratings; electric heating; metallic thin films; optical communication equipment; optical fibre cladding; optical fibre filters; optical tuning; wavelength division multiplexing; 0.5 W; Bragg gratings; DC current; GdCu; electrical heating; electrically tunable wavelength-selective filter; long period copper-coated grating; long period gratings; metal coating; resistive power; tunable wavelength-selective filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990659
