Imojula ye-Optical iyisisetshenziswa sehadiwe esibalulekile sokubona ukuxhumana kwenethiwekhi ye-optical kusikhungo sedatha. Ngokukhula kwenombolo ye-port kanye nobuningi, izindleko zemodyuli ye-optical zizobala cishe ingxenye yezindleko zenethiwekhi ye-optical kusikhungo sedatha.Okwamanje, ubuchwepheshe bokuxhumanisa i-100G busetshenziswe kabanzi ezikhungweni zedatha ezisanda kwakhiwa zezinkampani ezinkulu ze-Intanethi, kanye nobuchwepheshe bokuxhumanisa kwe-400G buzosetshenziswa kabanzi eminyakeni elandelayo ye-1-2.Ngakho-ke, ubuchwepheshe bokuqaliswa kwe-400G optical module sebugxile embonini.
Ngokuphathelene nobude begagasi lokukhanya, imojula yokukhanya ye-400G ingahlukaniswa ibe yimodi eminingi (MM) kanye nemodi eyodwa (SM). Ngokwemodi yokuguqulwa kwesignali, ingahlukaniswa nge-NRZ ne-PAM4 modulation (PAM4 iyona eyinhloko. okwamanje).Ngokwebanga lokudlulisela, i-400G module optical ingahlukaniswa ibe yi-SR, DR, FR kanye ne-LR. Kusukela efomini lokupakisha, i-400G module optical ingahlukaniswa ku-CDFP, CFP8, OSFP, qsfp-dd njalonjalo. Ngezansi ukuhlukaniswa kwezobuchwepheshe kwemojula ye-400G ye-optical.
I-module ye-400G yasekuqaleni ye-optical module isebenzisa i-16-channel 25Gbps ukuqaliswa kwe-NRZ (njenge-400g-sr16), isebenzisa i-CDFP noma iphakheji ye-CFP8. Inzuzo ye-NRZ yukuthi ingabolekwa kubuchwepheshe obuvuthiwe be-25G NRZ ku-module ye-100G optical, kodwa okubi ukuthi idinga iziteshi ze-16 zesignali yokudlulisa okufanayo, ngokusetshenziswa kwamandla amakhulu kanye nevolumu, engafaneleki ukusetshenziswa kwesikhungo sedatha.
Kumojula ye-400G ye-optical yamanje, i-8-channel 53GbpsPAM4 (400g-sr8,FR8,LR8) noma i-4-channel 106GbpsPAM4 (400g-dr4,FR4,LR4) isetshenziselwa kakhulu ukuzuza ukudluliswa kwesignali engu-400G ohlangothini lwe-optical optical. -Channel 53GbpsPAM4 isignali kagesi isetshenziswa ohlangothini lwembobo kagesi, yamukela uhlobo lokupakisha lwe-OSFP noma qsfp-dd. Kokubili amaphakheji we-OSFP kanye ne-QSFP-DD ahlinzeka nge-8 - ukuxhumana kwesignali kagesi wesiteshi.Uma kuqhathaniswa, usayizi wephakheji we-qsfp-dd mncane (ofana nephakheji ye-100G ye-optical module ye-QSFP28 yendabuko), efaneleka kakhulu izinhlelo zokusebenza zesikhungo sedatha. Usayizi wephakheji we-OSFP mkhulu kancane, ngoba unganikeza ukusetshenziswa kwamandla okwengeziwe, ngakho kufaneleke kakhulu ezinhlelweni zokuxhumana ngocingo.
Isibalo esilandelayo sibonisa ukuqaliswa kwe-400g-fr8 /LR8 kanye ne-400g-fr4 ngokulandelanayo
(Inkomba:Ukucaciswa kwe-OSFPMSA kwe-OSFP OCTAL SMALLFORM FACTOR PLUGGABLE MODULE.）Kuyabonakala ukuthi uhlangothi lwesixhumi esibonakalayo luyi-8-channel 53Gbps PAM4 isignali. Okwe-400g-sr8 /FR8/LR8 namanye amamojula,
I-CDR (ukubuyisela iwashi) nokuguqulwa kukagesi/okubonakalayo noma kokubona/kagesi kwenziwa kuphela ngaphakathi kwemojula yokubona. Ngakho-ke, uhlangothi lwembobo yokubona luphinde lube isignali engu-8-channel 53Gbps PAM4, njengesilinganiso sembobo kagesi.Ku-400g-dr4 /FR4/LR4 namanye amamojula, kukhona ama-Gearbox chips ngaphakathi kwemojuli ye-optical ephindaphinda okokufaka kokubili. izimbobo zibe isignali eyodwa futhi ziyilungise ekukhanyeni, ukuze isivinini sohlangothi lwembobo yokubona siphindwe kabili kunesohlangothi lwembobo, okungukuthi, isignali engu-106GbpsPAM4.
