Submarine optical cables yog qhov yooj yim heev rau seawater corrosion vim mus ntev immersion nyob rau hauv high-concentration seawater. Tsis tas li ntawd, hydrogen molecules yuav diffuse mus rau hauv cov khoom iav ntawm cov fiber ntau, ua rau qhov poob ntawm fiber ntau. Yog li ntawd, lub submarine optical cable yuav tsum tsis tsuas yog tiv thaiv hydrogen los ntawm kev tsim sab hauv, tab sis kuj tiv thaiv hydrogen los ntawm kev nkag mus rau hauv lub optical cable los ntawm sab nraud. Tam sim no, cov qauv ntawm submarine optical cable yog helically qhwv lub optical fiber tom qab ib los yog ob txheej txheej nyob rau hauv qhov chaw, thiab lub zog (ua los ntawm steel hlau) yog qhwv nyob ib ncig ntawm nws.
Lub submarine optical cable zoo li me ntsis zoo li cov roj kav dej. Qhov tseeb, qhov sib txawv loj tshaj plaws ntawm submarine optical cable thiab terrestrial optical cable yog nws "kev tiv thaiv armour". Feem ntau, "kev tiv thaiv armor" suav nrog
Yog vim li cas vim li cas thiaj li yuav tsum muaj ntau txheej tiv thaiv yog vim qhov chaw submarine ntsib los ntawm submarine optical cables yog qhov nyuaj heev thiab hnyav. Thawj yog qhov corrosion ntawm seawater. Cov txheej txheej polymer txheej ntawm submarine optical cable yog los tiv thaiv cov tshuaj tiv thaiv ntawm cov dej hiav txwv thiab cov hlau txuas ntxiv los tsim cov hydrogen. Txawm hais tias txheej txheej txheej yog corroded tiag tiag, cov yeeb nkab tooj liab sab hauv, paraffin, thiab carbonic acid resin yuav tiv thaiv hydrogen los ntawm kev ua phem rau cov fiber ntau. Lub infiltration ntawm hydrogen molecules yuav ua rau kom ib tug nce nyob rau hauv attenuation ntawm optical fiber kis tau tus mob.
Ntxiv rau qhov dej hiav txwv corrosion, submarine optical cables kuj raug rau submarine siab, kev puas tsuaj ntuj tsim (xws li av qeeg, tsunami, thiab lwm yam), thiab tib neeg yam (kev ua haujlwm cawm neeg nuv ntses). Yog tsis muaj kev tiv thaiv armor, submarine optical cables tsis tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev.
Sharks nres submarine cables
Txawm li cas los xij, txawm tias muaj kev tiv thaiv nruj, submarine optical cable tseem tsis tuaj yeem siv mus tas li, thiab nws lub neej kev pabcuam feem ntau tsuas yog 25 xyoo.
