Title :
Low coherence technique to characterise reflectivity and time delay as a function of wavelength within a long fibre grating
Author :
Volanthen, M. ; Geiger, H. ; Cole, M.J. ; Laming, R.I. ; Dakin, J.P.
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
fDate :
4/11/1996 12:00:00 AM
Abstract :
A new technique for obtaining both time delay and reflectivity as a function of wavelength within a long fibre Bragg grating is presented. A narrowband wavelength-tunable reflector with a 0.18 nm bandwidth is used to select the interrogation wavelength, while optical coherence-domain reflectometry is used to obtain the time delay with better than 2 ps accuracy
Keywords :
delays; diffraction gratings; light coherence; optical fibre testing; reflectivity; reflectometry; fibre Bragg grating; narrowband wavelength-tunable reflector; optical coherence-domain reflectometry; reflectivity; time delay; wavelength dependence;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960505
