1, imodemu yokubona iyisiginali yokubona emshinini wesiginali kagesi we-Ethernet, imodemu yokubona ekuqaleni ibizwa ngokuthi imodemu, iwuhlobo lwehardware yekhompiyutha, isekupheleni kokuthumela ngokushintshwa kwezimpawu zedijithali zibe amasignali e-analog, futhi ekugcineni kokwamukela ngokusebenzisa. amasiginali we-analog okwehlisa izinga abe amasignali edijithali idivayisi.
I-Optical Network Unit (ONU) iyiyunithi yenethiwekhi yokubona.I-ONU ihlukaniswe yaba amayunithi enethiwekhi optical asebenzayo kanye namayunithi enethiwekhi ye-passive optical network.I-ONU isetshenziswa kakhulu ukuthola idatha yokusakaza ethunyelwa ama-OLT.Ngaphezu komsebenzi wekati elikhanyayo, i-ONU nayo inomsebenzi wokushintsha.
2, i-onu ihlukaniswe yaba isigaba esithi, b, c, zonke ezintathu ziwukufinyelela kokubona, kodwa ukunikeza abasebenzisi inombolo yamachweba, izinhlobo zamachweba zihlukile, imodemu yokubona empeleni iyi-onu yekilasi.
Imodemu yokubona, eyaziwa nangokuthi i-optical cat, iyithuluzi lenethiwekhi elidlulisela amasignali okubona kwamanye amasignali ephrothokholi nge-optical fiber media.Kuyidivaysi yokudlulisela edluliselwe kunethiwekhi yendawo enkulu yendawo (LAN), inethiwekhi yendawo yedolobha elikhulu (MAN), kanye nenethiwekhi yendawo ebanzi (WAN).Idivayisi yakhiwe ngokuthumela, ukwamukela, ukulawula, isixhumi esibonakalayo, kanye nokunikezwa kwamandla.Yamukela i-chip enkulu ehlanganisiwe, isifunda esilula, ukusetshenziswa kwamandla okuphansi, ukwethembeka okuphezulu, inkomba ephelele yesimo se-alamu, nomsebenzi ophelele wokuphatha inethiwekhi.
Ukuxhumana kwe-Optical fiber kuthuthuke ngokushesha kwaba uhlobo oluyinhloko lokudluliswa kolwazi ngenxa yezinzuzo zakhona njengebhendi yefrikhwensi ebanzi nomthamo omkhulu.Ukuze uthole ukuxhumana okubonakalayo, ukuguquguquka kwe-optical kanye nokwehliswa kwe-demodulation kufanele kwenziwe.Ngakho-ke, njengedivaysi eyinhloko yesistimu yokuxhumana ye-fiber optical, imodemu yokubona ithola ukunakwa okwengeziwe.Kunezinhlobo ezimbili zama-modulators optical: i-modulator eqondile ne-modulator yangaphandle, kanye ne-optical demodulator ihlukaniswe yaba izinhlobo ezimbili: nge-amplifier eyakhelwe ngaphakathi nangaphandle.I-modulator eqondile kanye ne-demodulator ene-amplifier eyakhelwe ngaphakathi yiyona nto okugxilwe kuyo kule phrojekthi.Ukuguquguquka okuqondile kunezinzuzo zokulula, umnotho kanye nokuqaliswa okulula, kuyilapho i-demodulator ene-amplifier eyakhelwe ngaphakathi inezici zokuhlanganiswa okuphezulu nosayizi omncane.
imodemu ye-optical iyithuluzi lokudlulisela elingaxhunywa ku-inthanethi ngoxhumo lwekhebula lenethiwekhi, elifana nekati lethu elikhanyayo le-inthanethi, kodwa umkhawulo ongaphezulu wekati uxhumeke kumjikelezo, futhi umkhawulo ongaphezulu wemodemi optical uxhumekile. endleleni yokukhanya, ngakho ibizwa ngokuthi ikati elikhanyayo.Ikati elixhunywe endleleni yokukhanya.Isiphetho esiphansi se-onu ku-epon/GPON sixhunywe kumsebenzisi.
1, imodemu yokubona iwuhlobo lwe-onu, elomsebenzisi oyedwa, imodemu yokubona kungashiwo ukuthi iyideskithophu onu.
2, i-onu eyinhloko ingeyabasebenzisi abaningi, okungukuthi, imbobo kagesi inama-pon port angu-8 kuya kwangu-24.Imodemu yokubona inezimbobo zikagesi eziyi-1-4 kuphela.
Umehluko phakathi kwemodemu yokubona ne-ONU:
imodemu yokubona ngokuvamile isetshenziswa uma amakhasimende amakhulu, ikakhulukazi ukufinyelela idatha ezinikele.
uhlobo lwekhadi lemodemu ye-optical kanye nedeskithophu, uhlobo lwekhadi ngokuvamile lubeka igumbi lomshini.
Ideskithophu ivamise ukubekwa phezu kweklayenti.I-ONU isetshenziselwa ukufinyelela kwenethiwekhi yendawo yokuhlala ebanzi.Umehluko omkhulu usuka ekhadini legumbi elididiyelwe lekhadi le-optical cat kuya ku-client desktop optical cat, i-akhawunti yamakati abona ngepheya lemicu, futhi ukusuka egumbini elihlanganisiwe le-OLT kuya eklayentini ama-ONU amaningi nawo athatha ipheya lemicu, futhi phakathi kuhamba ngenqubo yokuhlukanisa.Umehluko phakathi kwemodemu ye-optical ne-ONU ukuthi i-ONU ilondoloza izinsiza ze-fiber core, futhi imodemu yokubona ishibhile, futhi amakati alula ayizicucu ezingamakhulu ambalwa.Hlobo luni lokusebenzisa, ukuhlaziywa okuphelele kwezindleko, ngokusho kwesimo.
Isikhathi sokuthumela: Dec-14-2023