OPGW (optical ground wire) is a type of conductor that is
used in the construction of electric power transmission lines.
Here the conductor combines both the functions of grounding
and communications. OPGW contains a tubular structure with
one or more optical fibers in it, surrounded by layers of
galvanized steel and aluminium alloy wire. In the OPGW
system, the conductor serves as a normal ground wire
protecting the phase conductors against lightning strikes.
The optical fibers are integrated into a stainless steel tube filled
with a thixotropic jelly and hermetically sealed to provide the best
protection of enclosed fibers at any stage of the installation or


The optical fiber of the OPGW is manufactured and designed
to provide optimum transmission services. These fibers are
used primarily in telecommunications networks characterized
by long-distance links and high capacity.