Menyekanisha silicon Photonic Mach-Zende modulator MZM modulator

Kumenyekanisha silicon Photonic Mach-Zende modulatorMZM modulator

UwitekaMach-zende modulator nikintu cyingenzi cyane kuri transmitter iherezo muri 400G / 800G silicon Photonic modules. Kugeza ubu, hari ubwoko bubiri bwa modulator kuri transmitter ya nyuma ya moderi yakozwe na silicon Photonic modules yakozwe: Ubwoko bumwe ni moderi ya PAM4 ishingiye kumuyoboro umwe wa 100Gbps uburyo bwo gukora, bugera kuri 800Gbps yohereza amakuru binyuze mumiyoboro 4 / umuyoboro uhuriweho kandi ikoreshwa cyane mubigo byamakuru na Gpus. Birumvikana ko umuyoboro umwe wa 200Gbps silicon Photonics Mach-Zeonde modulator izahatana na EML nyuma yumusaruro mwinshi kuri 100Gbps ntigomba kuba kure. Ubwoko bwa kabiri niIQ modulatorikoreshwa muburyo burebure bwa coherent optique itumanaho. Kurohama kwa coherent byavuzwe muriki cyiciro bivuga intera yo kohereza modul optique kuva kuri kilometero ibihumbi mumurongo wumugongo wa metropolitan kugera kuri moderi ya ZR optique kuva kuri kilometero 80 kugeza 120, ndetse no kuri moderi ya optique ya LR kuva kuri kilometero 10 mugihe kizaza.

Ihame ryihutamoderi ya siliconirashobora kugabanywamo ibice bibiri: optique n'amashanyarazi.

Igice cyiza: Ihame ryibanze ni Mach-zeund interferometero. Umucyo wumucyo unyura mumurongo wa 50-50 hanyuma uhinduka imirishyo ibiri yumucyo ningufu zingana, zikomeza kwanduzwa mumaboko abiri ya moderi. Mugenzuzi yicyiciro kuri imwe mu ntwaro (ni ukuvuga, indangagaciro ya silicon ihindurwa nubushyuhe kugirango ihindure umuvuduko wikwirakwizwa ryukuboko kumwe), guhuza urumuri rwa nyuma bikorwa mugusohoka kwamaboko yombi. Uburebure bwicyiciro (aho impinga yamaboko yombi igera icyarimwe) hamwe no guhagarika interineti (aho itandukaniro ryicyiciro ni 90 ° naho impinga ihabanye ninkono) irashobora kugerwaho binyuze mukwivanga, bityo bigahindura ubukana bwurumuri (bishobora kumvikana nka 1 na 0 mubimenyetso bya digitale). Ubu ni imyumvire yoroshye kandi nuburyo bwo kugenzura aho bakorera mubikorwa bifatika. Kurugero, mu itumanaho ryamakuru, dukora kumwanya wa 3dB munsi yimpinga, kandi mubitumanaho bihuje, ntabwo dukora ahantu hatagaragara. Nyamara, ubu buryo bwo kugenzura itandukaniro ryicyiciro binyuze mu gushyushya no gukwirakwiza ubushyuhe kugirango ugenzure ibimenyetso bisohoka bifata igihe kinini cyane kandi ntibishobora kuba byujuje ibyifuzo byacu byo kohereza 100Gpbs kumasegonda. Kubwibyo, tugomba gushaka uburyo bwo kugera ku gipimo cyihuse cyo guhinduka.

Igice cyamashanyarazi kigizwe ahanini nigice cya PN gikeneye guhindura indangagaciro zivunagura kumurongo mwinshi, hamwe ningendo ya elegitoronike yingendo ihuza umuvuduko wibimenyetso byamashanyarazi nibimenyetso bya optique. Ihame ryo guhindura indangantego yingaruka ningaruka zo gukwirakwiza plasma, izwi kandi nkingaruka zo gukwirakwiza kubuntu. Bivuga ku ngaruka zifatika ko iyo kwibumbira hamwe kwabatwara kubuntu mubintu bya semiconductor bihinduka, ibice nyabyo nibitekerezo byibintu byerekana ibintu byangiritse nabyo bihinduka bikurikije. Iyo ubwikorezi bwibikoresho bya semiconductor bwiyongereye, coefficente yo kwinjiza ibintu yiyongera mugihe igice nyacyo cyibipimo bigabanuka. Mu buryo nk'ubwo, iyo abatwara ibikoresho bya semiconductor bigabanutse, coeffisente yo kwinjiza igabanuka mugihe igice nyacyo cyibipimo byiyongera. Hamwe ningaruka nkiyi, mubikorwa bifatika, guhindura ibimenyetso byumuvuduko mwinshi birashobora kugerwaho muguhuza umubare wabatwara mumashanyarazi. Amaherezo, 0 na 1 ibimenyetso bigaragara kumwanya usohoka, bipakurura ibimenyetso byihuta byamashanyarazi kuri amplitude yuburemere bwurumuri. Inzira yo kubigeraho ni kunyura muri PN. Abatwara ubuntu bwa silikoni yubusa ni mbarwa cyane, kandi ihinduka ryinshi ntirihagije kugirango uhuze nimpinduka zerekana. Niyo mpamvu, birakenewe kongera urwego rwabatwara mumashanyarazi yoherejwe na doping silicon kugirango tugere ku mpinduka zerekana ibintu, bityo tugere ku gipimo cyo hejuru.