OPGW (Optical Ground Wire) ndi mtundu wa chingwe chomwe chimagwiritsidwa ntchito m'makampani opanga matelefoni kuti atumize deta kudzera muukadaulo wa fiber optic, komanso kupereka mphamvu zamagetsi pazingwe zamagetsi apamwamba kwambiri.Zingwe za OPGW zimapangidwa ndi chubu chapakati kapena pachimake, chomwe chimayikidwa gawo limodzi kapena zingapo zachitsulo kapena mawaya a aluminiyamu, ndi wosanjikiza wakunja wa ulusi wowonekera.Kupanga kwa zingwe za OPGW kumasiyanasiyana malinga ndi kagwiritsidwe ntchito komanso zofunikira zenizeni zamakina amagetsi.
Pali mitundu itatu yofunikira yamapangidwe a chingwe cha OPGW:
Central Tube: Chingwe chamtunduwu chimakhala ndi chubu chapakati, chomwe chimayikidwa mawaya achitsulo kapena mawaya a aluminiyamu.Kenako ulusi wa kuwala umayikidwa mu chubu.Kapangidwe kameneka kamapangitsa kusinthasintha kwakukulu komanso kumapereka malo ochulukirapo a ulusi wa kuwala.
Layer Stranding: Chingwe chamtunduwu chimakhala ndi zigawo zingapo zachitsulo kapena mawaya a aluminiyamu omwe amalumikizidwa palimodzi.Ulusi wa kuwala umayikidwa mu interstices pakati pa mawaya.Kapangidwe kameneka kamapereka mphamvu zambiri ndipo ndi koyenera kwambiri pakugwiritsa ntchito zovuta kwambiri.
Unitube: Chingwe chamtunduwu chimakhala ndi chubu chimodzi momwe mawaya onse achitsulo kapena aluminiyamu ndi ulusi wa kuwala amayikidwa.Kapangidwe kameneka kamapereka chingwe cholumikizira chosavuta kukhazikitsa.
Zingwe za OPGW zimathanso kugawidwa kutengera kuchuluka kwa ulusi wawo, womwe umachokera ku 12 mpaka 288.Kusankhidwa kwa kuchuluka kwa fiber kumatengera kagwiritsidwe ntchito kake komanso kuchuluka kwa mphamvu zamakina amagetsi.
