Imodyuli ye-Optical sisixhobo esingundoqo se-hardware ukuqonda uqhagamshelwano lwenethiwekhi ye-optical kwiziko ledatha. Ngokunyuka kwenombolo ye-port kunye noxinaniso, iindleko zemodyuli ye-optical iya kubanda malunga nesiqingatha seendleko zenethiwekhi ye-optical kwiziko ledatha.Okwangoku, iteknoloji yokudibanisa i-100G isetyenziswe ngokubanzi kumaziko edatha esanda kwakhiwa kwiinkampani ezinkulu ze-Intanethi, kunye ne-400G iteknoloji yokudibanisa iya kusetyenziswa ngokubanzi kwiminyaka eyi-1-2 ezayo.Ngoko ke, iteknoloji yokuphunyezwa kwe-400G imodyuli ye-optical sele ibe yingqwalasela yoshishino.
Ngokumalunga nobude bokukhanya kokukhanya, imodyuli yokukhanya ye-400G inokwahlulwa ibe yimodi ye-multi-mode (MM) kunye ne-mode-mode (SM) .Ngokubhekiselele kwimodi yokumodareyitha isignali, inokwahlulwa ibe yi-NRZ kunye ne-PAM4 yokumodareyitha (i-PAM4 iyona nto iphambili). okwangoku) .Ngokubhekiselele kumgama wokudlulisa, imodyuli ye-400G ye-optical inokwahlulwa ibe yi-SR, DR, FR kunye ne-LR. Ukususela kwifom yokupakisha, imodyuli ye-400G ye-optical inokwahlulwa ibe yi-CDFP, i-CFP8, i-OSFP, i-qsfp-dd kunye nokunye. Ngezantsi ulwahlulo lobugcisa lwemodyuli ye-400G ye-optical.
Imodyuli yokuqala ye-400G ye-optical module isebenzisa i-16-channel 25Gbps ukuphunyezwa kwe-NRZ (njenge-400g-sr16), usebenzisa i-CDFP okanye i-CFP8 iphakheji. Inzuzo ye-NRZ kukuba inokubolekwa kwi-teknoloji ye-25G NRZ evuthiweyo kwimodyuli ye-100G ye-optical, kodwa i-advantage kukuba idinga iziteshi ze-16 zesignali yokuhanjiswa okufanayo, kunye nokusetyenziswa kwamandla amakhulu kunye nomthamo, ongafanelekanga usetyenziso lweziko ledatha.
Kwimodyuli yangoku ye-400G ye-optical module, i-8-channel 53GbpsPAM4 (400g-sr8, FR8, LR8) okanye i-4-channel 106GbpsPAM4 (400g-dr4, FR4, LR4) isetyenziselwa ukufezekisa ukuhanjiswa kwesignali ye-400G kwicala le-8 optical. -Channel 53GbpsPAM4 isignali yombane isetyenziswe kwicala le-port yombane, ithatha ifom yokupakisha ye-OSFP okanye qsfp-dd. Zomibini iiphakheji ze-OSFP kunye ne-QSFP-DD zibonelela nge-8 - i-interfaces yesignali yombane wesiteshi.Xa kuthelekiswa, ubukhulu bephakheji ye-qsfp-dd buncinci (ngokufana ne-100G ye-module ye-optical module ye-QSFP28 yendabuko), efanelekileyo ngakumbi kwizicelo zeziko ledatha. Ubungakanani bepakethe ye-OSFP inkulu kancinane, kuba inokubonelela ngokusetyenziswa kwamandla ngakumbi, ngoko ke ifaneleke ngakumbi kwizicelo zonxibelelwano.
Lo mfanekiso ulandelayo ubonisa ukuphunyezwa kwe-400g-fr8 /LR8 kunye ne-400g-fr4 ngokulandelanayo
(Ireferensi:Inkcazo ye-OSFPMSA ye-OSFP OCTAL SMALLFORM FACTOR PLUGGABLE MODULE.）Ingabonwa ukuba i-interface yecala yi-8-channel 53Gbps isignali ye-PAM4. Kwi-400g-sr8 / FR8/LR8 kunye nezinye iimodyuli,
I-CDR (ukubuyiselwa kwewashi) kunye nokuguqulwa kombane / optical okanye optical / umbane kwenziwa kuphela ngaphakathi kwimodyuli ye-optical. Ngoko ke, icala le-port optical liphinde libe ngumqondiso we-8-channel 53Gbps PAM4, njengomlinganiselo we-port yombane. Kwi-400g-dr4 / FR4 / LR4 kunye nezinye iimodyuli, kukho ii-chips ze-Gearbox ngaphakathi kwimodyuli ye-optical ephindaphinda igalelo lezi zimbini. izibuko zibe ngumqondiso omnye kwaye ziyimodareyithe ekukhanyeni, ngoko ke isantya secala lezibuko le-optical liphindwe kabini kunelo cala lezibuko, elizezi, 106GbpsPAM4 uphawu.
