Umgama wokudluliselwa kweemodyuli ze-optical uthintelwe kukudibana kwezinto ezibonakalayo nezobunjineli, ezithi xa zidibene zigqibe umgama ophezulu apho iimpawu ze-optical zinokudluliselwa ngempumelelo nge-optical fiber. Eli nqaku lichaza ezinye zezona zinto ziqhelekileyo ezithintelayo.
Okokuqala,uhlobo kunye nomgangatho womthombo wokukhanya obonakalayozidlala indima ebalulekileyo. Izicelo ezifikeleleka ngokukhawuleza zihlala zisebenzisa izixhobo ezingabizi kakhuluIi-LED okanye ii-laser ze-VCSEL, ngelixa uthumelo oluphakathi nolude luxhomekeke ekusebenzeni okuphezuluIilaser ze-DFB okanye ze-EMLAmandla okukhupha, ububanzi be-spectral, kunye nokuzinza kwe-wavelength kuchaphazela ngokuthe ngqo amandla okuhambisa.
Isibini,ukuncitshiswa kwefayibhayenye yezona zinto ziphambili ezithintela umgama wokudluliselwa. Njengoko imiqondiso ye-optical isasazeka ngefayibha, iyancipha kancinci kancinci ngenxa yokufunxwa kwezinto, ukusasazeka kweRayleigh, kunye nokulahleka kokugoba. Kwifayibha yemowudi enye, ukuncitshiswa okuqhelekileyo kumalunga0.5 dB/km kwi-1310 nmkwaye ingaba sezantsi njenge0.2–0.3 dB/km kwi-1550 nmNgokwahlukileyo koko, i-multimode fiber ibonisa ukuncitshiswa okuphezulu kakhulu kwe-3–4 dB/km kwi-850 nm, yiyo loo nto iinkqubo ze-multimode zihlala zikhawulelwe kunxibelelwano olufutshane oluqala kumakhulu aliqela eemitha ukuya kuthi ga kwi-2 km.
Ukwengeza,iziphumo zokusasazekaithintela kakhulu umgama wokudluliselwa kwemiqondiso ye-optical ekhawulezayo. Ukusasazeka—kubandakanya ukusasazeka kwezinto kunye nokusasazeka kwe-waveguide—kubangela ukuba ii-optical pulses zande ngexesha lokudluliselwa, nto leyo ekhokelela ekuphazamisekeni kwe-intersymbol. Esi siphumo siba sibi kakhulu kumazinga edatha ye-10 Gbps nangaphezuluUkunciphisa ukusasazeka, iinkqubo zokuhamba ixesha elide zihlala zisebenzisaifayibha ehlawula ukusasazwa (i-DCF)okanye sebenzisaiileser ezinobubanzi obumxinwa zidityaniswe neefomathi zemodyuli eziphambili.
Kwangaxeshanye,ubude bomda bokusebenzayemodyuli ye-optical inxulumene kakhulu nomgama wokudluliselwa.Ibhendi ye-850 nmisetyenziswa kakhulu ekudluliseleni ulwazi olufutshane ngefayibha ye-multimode.Ibhendi ye-1310 nm, ehambelana nefestile yokusasazeka kwe-zero-dispersion yefayibha yemowudi enye, ifanelekile kwiindlela zokusetyenziswa ezikude10–40 km. IIbhendi ye-1550 nminika ukuncipha okuphantsi kwaye iyahambelanaii-amplifiers zefayibha ezifakwe i-erbium (ii-EDFA), nto leyo eyenza ukuba isetyenziswe kakhulu kwiimeko zokusasazwa komgama omde kunye nomgama omde kakhulu ngaphaya40 km, njenge80 km okanye i-120 kmamakhonkco.
Isantya sokudlulisa ngokwaso sikwabeka umqobo ochaseneyo kumgama. Amanani aphezulu edatha afuna umlinganiselo oqinileyo wesignali-ingxolo kwi-receiver, nto leyo ebangela ubuthathaka obuphantsi be-receiver kunye nokufikelela okufutshane kakhulu. Umzekelo, i-optical module exhasaIikhilomitha ezingama-40 kwi-1 Gbpsinokukhawulelwa kwingaphantsi kwe-10 km kwi-100 Gbps.
Ngaphezu koko,izinto ezisingqongileyo—ezifana nokuguquguquka kobushushu, ukugoba kakhulu kwefayibha, ukungcola kwesixhumi, kunye nokuguga kwezakhi—kunokubangela ukulahleka okanye ukubonakaliswa okongezelelweyo, okunciphisa ngakumbi umgama wokudluliselwa okusebenzayo. Kubalulekile kwakhona ukuqaphela ukuba unxibelelwano lwefayibha-optic alusoloko “lufutshane, lungcono.” Kudla ngokubakhoimfuneko encinci yomgama wokudluliselwa(umzekelo, iimodyuli zemowudi enye zihlala zifuna iimitha ezi-≥2) ukuthintela ukubonakaliswa okugqithisileyo kwe-optical, okunokuphazamisa umthombo we-laser.
Ixesha leposi: Jan-29-2026