G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 11/00 (2006.01)
Patent
CA 2481655
The present invention relates to an apparatus (10) that allows to characterise or measure the chromatic dispersion in an optical fibre segment (50) by accessing a single end of the fibre itself (50) and measuring the phase shift between modulating signals of impulsive kind generated by a signal generator (12) and the same modulation signals reflected by a remote end of the fibre (51). The invention further relates to the method for measuring the chromatic dispersion of the optical fibre (50). Thanks to the invention, the apparatus (10) does not require an absolute external reference signal and allows to determine the chromatic dispersion of the fibre (50) being measured as the wavelength of the optical signals varies.
la présente invention concerne un appareil de mesure (10) permettant de caractériser ou de mesurer la dispersion chromatique dans un segment de fibre optique (50). Sur une seule extrémité de la fibre (50) elle-même, on mesure le déphasage entre des signaux de modulation de type impulsionnel produit par une génératrice de signaux (12) et ces mêmes signaux de modulation réfléchie par une extrémité éloignée de la fibre (51). Grâce à cette invention, l'appareil (10) ne nécessite pas de signal de référence extérieur absolu et peut déterminer la dispersion chromatique de la fibre (50) à mesurer lorsque la longueur d'onde des signaux optiques varie.
Ridout & Maybee Llp
Telecom Italia S.p.a.
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