Title :
Long term attenuation measurements on optical ground wires
Author :
Lamarche, Louis ; Gagnon, Daniel ; Miron, Michel
Author_Institution :
Hydro-Quebec, Varennes, Que., Canada
fDate :
11/1/1996 12:00:00 AM
Abstract :
The attenuation stability of optical fibres integrated in optical ground wire (OPGW) cables over temperature and time is of paramount importance in the planning of long distance links. We report here a mean thermal attenuation dependence of 5.5·10-5 dB/(km·°C) at 1550 nm, on a 220 km span of dispersion shifted (DS) fibres of an installed OPGW cable. This optical link is installed in the James Bay region over a 735 kV power line where temperature varies from -40°C to +30°C annually. The data sample presented covers 1.5 year starting December 1993. During that period, we also observed a temporal evolution of the attenuation described by the empirical relation A=A0 (t-t0)0.00394
Keywords :
attenuation measurement; cable testing; optical cables; optical fibre testing; power overhead lines; power transmission lines; -40 to 30 C; 1.5 y; 1550 nm; 220 km; 735 kV; James Bay region; attenuation stability; dispersion shifted fibres; long distance links planning; long term attenuation measurements; mean thermal attenuation dependence; optical fibres; optical ground wires; power line; Attenuation measurement; Integrated optics; Land surface temperature; Optical attenuators; Optical fiber cables; Optical fiber communication; Optical fiber dispersion; Optical fibers; Stability; Wires;
Journal_Title :
Power Systems, IEEE Transactions on
