130-km-long fault location for single-mode optical fiber using 1.55-microm Q-switched Er(3+):glass laser.
An optical-time-domain reflectometer has been constructed with a 1.55-microm Er(3+):glass laser, a TeO(2) acousto-optical directional coupler, and a cooled Ge P-I-N photodiode. With it, a maximum detectable fault-location length of 130 km for single-mode optical fiber has been successfully achieved at a 1.55microm wavelength.
Nakazawa
M
M
Tokuda
M
M
Washio
K
K
Asahara
Y
Y