Title :
Marked extension of diagnosis length in optical time domain reflectometry using 1.32 ¿m YAG laser
Author :
Nakazawa, Masataka ; Washio, K. ; Morishige, Y.
Author_Institution :
NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
Abstract :
An optical time domain reflectometer was newly constructed by using a high power Nd:YAG laser operating at a wavelength of 1.32 ¿m and a TeO2 acousto-optical light deflector. As a result, the maximum detectable fault location length of 34 km for single-mode fibre and that of 60 km for multimode graded-index fibre were successfully attained.
Keywords :
acousto-optical devices; fault location; measurement by laser beam; optical fibres; time-domain reflectometry; 1.32 micron YAG laser; TeO2 acousto-optical light deflector; acousto-optics; detectable fault location length; fibre optics; multimode graded-index fibre; optical time domain reflectometry; single-mode fibre;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810549
