I-optical fiber yi-fiber eyenziwe ngeglasi okanye ngeplastiki, kwaye i-fiber ngokwayo ibuthathaka kakhulu kwaye iyaphuka lula. Ukufaka i-fiber encinci kwi-sheath yeplastiki kuvumela ukuba igobe ngaphandle kokuphuka. Intambo ene-optical fiber egqunywe kwi-sheath ekhuselayo ibizwa ngokuba yi-optical cable. Ngaba i-optical cable ingagobeka ngokuthanda kwayo?
Ekubeni ifayibha ibuthathaka xa ixinezelekile, ukuyigoba kunokubangela ukuba isignali ye-optical ivuze nge-fiber cladding, kwaye njengoko ukugoba kucaca ngakumbi, isignali ye-optical iya kuvuza nangakumbi. Ukugoba kunokubangela nemifantu emincinci enokonakalisa ifayibha ngokusisigxina. Ngaphandle kwengxaki ngokwayo, iindawo zokugoba ezincinci kunzima ukuzifumana kwaye zifuna izixhobo zokuvavanya ezibizayo; ubuncinci, ii-jumpers kufuneka zicocwe okanye zitshintshwe. Ukugoba ifayibha kunokubangela ukugoba kwefayibha. Ubungakanani bokugoba ngenxa yokugoba kwefayibha buyanda njengoko i-radius yokugoba incipha. Ukugoba ngenxa yokugoba kukhulu kwi-1550 nm kune-1310 nm, kwaye kukhulu nangakumbi kwi-1625 nm. Ke ngoko, xa ufaka ii-fiber jumpers, ingakumbi kwindawo enoxinano olukhulu, i-jumper akufuneki igobe ngaphaya kwe-radius yayo yokugoba eyamkelekileyo. Ngoko ke, yeyiphi i-radius efanelekileyo yokugoba?
Irediyasi yokugoba yefayibha yi-engile apho ifayibha inokugoba khona ngokukhuselekileyo nakweyiphi na indawo. Iirediyasi zokugoba zefayibha zahlukile kuzo zonke iintambo kunye neentambo zokutshixa kwaye zinokuhluka ngokuxhomekeke kuhlobo lwentambo kunye nenkqubo yokwenziwa. Irediyasi yokugoba encinci ixhomekeke kububanzi kunye nohlobo lwentambo ye-optical; ifomula esetyenziswa rhoqo yile: irediyasi yokugoba encinci = ububanzi bangaphandle bentambo ye-optical x ububanzi bebubanzi bentambo ye-optical.
Umgangatho omtsha we-ANSI/TIA/EIA-568B.3 uchaza irediyasi egobileyo encinci kunye nemigangatho ephezulu yamandla okutsalwa kwentambo ye-fiber optic ye-50/125 micron kunye ne-62.5/125 micron. Irediyasi egobileyo encinci ixhomekeke kwintambo ethile ye-fiber optic. Phantsi koxinzelelo, irediyasi egobileyo yentambo ye-fiber optic ngokubanzi akufuneki ibe ngaphantsi kwe-diameter yangaphandle (OD) yentambo ye-fiber optic. Phantsi komthwalo otsalwa, irediyasi egobileyo iphindwe kalishumi kune-diameter yangaphandle yentambo ye-fiber optic. Imigangatho yoshishino yeentambo ze-patch zendabuko ze-single-mode idla ngokuchaza irediyasi egobileyo encinci ephindwe kalishumi kune-diameter yangaphandle yentambo efakwe ijakethi okanye i-1.5 intshi (38 mm), nokuba yeyiphi na enkulu. Ifayibha ye-G652 esetyenziswa rhoqo ine-radius egobileyo encinci ye-30 mm.
I-G657, eye yasetyenziswa kwiminyaka yakutshanje, inerediyasi encinci yokugoba, kuquka i-G657A1, i-G657A2, kunye ne-G657B3. Irediyasi encinci yokugoba ye-G657A1 yi-10 mm, kwi-G657A2 yi-7.5 mm, kwaye kwi-G657B3 yi-5 mm. Olu hlobo lwefayibha lusekelwe kwifayibha ye-G652D, ephucula iimpawu zokugoba kunye neempawu zejometri zefayibha, ngaloo ndlela iphucula iimpawu zayo zoqhagamshelo. Ikwaziwa njengefayibha engathinteliyo ukugoba. Isetyenziswa kakhulu kwi-FTTx nakwi-FTTH, ifanelekile ukusetyenziswa kwiindawo ezincinci zangaphakathi okanye kwiikona.
Ukuqhekeka kwefayibha kunye nokuncipha okwandisiweyo kunokuchaphazela kakhulu ukuthembeka kwenethiwekhi ixesha elide, iindleko zokusebenza kwenethiwekhi, kunye nokukwazi ukugcina nokukhulisa isiseko sabathengi. Ke ngoko, kufuneka siqonde ngokucacileyo irediyasi encinci yokugoba kwefayibha ukugcina intambo yentambo okanye intambo yepetshi isebenza kakuhle.
Ixesha lokuthumela: Novemba-11-2022
