Taura iyo silicon photonic Mach-Zende modulatorMZM modulator
TheMach-zende modulator ndiyo inonyanya kukosha pamagumo ekutumira mu400G/800G silicon photonic modules. Parizvino, kune mhando mbiri dzemamodulator pamagumo ekutumira-akagadzirwa nesilicon photonic modules: Imwe mhando ndeye PAM4 modulator yakavakirwa pane imwechete-channel 100Gbps yekushanda modhi, iyo inowana 800Gbps kufambisa data kuburikidza ne 4-channel / 8-chaneru yakafanana nzira uye inonyanya kushandiswa munzvimbo dzedata uye Gpus. Zvechokwadi, imwe-channel 200Gbps silicon photonics Mach-Zeonde modulator iyo ichakwikwidzana neEML mushure mekugadzirwa kwemazhinji pa100Gbps haifaniri kunge iri kure. Rudzi rwechipiri ndirwoIQ modulatorinoshandiswa mune yakareba-kure inopindirana optical communication. Kunyura kwakabatana kunotaurwa padanho razvino kunoreva kureba kwemaoptical modules kubva kuzviuru zvemakiromita mumetropolitan backbone network kuenda kuZR optical modules kubva pa80 kusvika 120 makiromita, uye kunyange kuLR optical modules kubva kumakiromita gumi mune ramangwana.
Nheyo yepamusoro-sorosilicon modulatorsinogona kukamurwa kuita zvikamu zviviri: optics uye magetsi.
Optical chikamu: Nheyo yekutanga ndeye Mach-zeund interferometer. Chiedza chechiedza chinodarika nepakati pe50-50 beam splitter uye chinova mirazvo miviri yechiedza ine simba rakaenzana, rinoramba richifambiswa mumaoko maviri emodulator. Nekutonga kwechikamu pane imwe yemaoko (kureva kuti, iyo refractive index yesilicon inoshandurwa neheater kuti ichinje kukurumidza kupararira kweruoko rumwe), iyo yekupedzisira danda musanganiswa inoitwa pakubuda kwemaoko maviri. Kupindira kwechikamu kureba (apo nhongonya dzemaoko ese dziri mbiri dzinosvika panguva imwe chete) uye kukanganiswa kubviswa (apo musiyano wechikamu uri 90 ° uye nhongonya dzakatarisana nezvigero) inogona kuwanikwa kuburikidza nekukanganisika, nokudaro modulating kusimba kwechiedza (iyo inogona kunzwisiswa se1 uye 0 mumasaini edhijitari). Uku kunzwisisa kwakapusa uye zvakare nzira yekudzora yenzvimbo yekushanda mubasa rinoshanda. Semuenzaniso, mukukurukurirana kwedata, tinoshanda pane imwe nzvimbo 3dB yakaderera pane yepamusoro, uye mukukurukurirana kwakabatana, tinoshanda pasina chiedza. Zvisinei, iyi nzira yekudzora mutsauko wechikamu kuburikidza nekupisa uye kupisa kupisa kudzora chiratidzo chekubuda kunotora nguva yakareba uye haigoni kuzadzisa zvatinoda zvekutumira 100Gpbs pasekondi. Naizvozvo, isu tinofanirwa kutsvaga nzira yekuwana kukurumidza chiyero chemodulation.
Chikamu chemagetsi chinonyanya kuve nechikamu chePN junction chinoda kushandura refractive index pane yakakwira frequency, uye yekufamba wave electrode chimiro chinofanana nekumhanya kwechiratidzo chemagetsi uye chiratidzo chemaziso. Nheyo yekushandura refractive index ndeye plasma dispersion effect, inozivikanwawo seyemahara carrier dispersion effect. Inoreva maitiro emuviri kuti kana kusangana kwevatakuri vakasununguka mune semiconductor zvinhu kunoshanduka, izvo chaizvo uye zvekufungidzira zvikamu zveiyo zvinyorwa refractive index zvakare zvinoshanduka zvinoenderana. Kana iyo yekutakura yekutakura mune semiconductor zvinhu ichiwedzera, iyo yekunyudza coefficient yechinhu inowedzera nepo chikamu chaicho cheiyo refractive index ichiderera. Saizvozvo, kana vatakuri mune semiconductor zvinhu zvinodzikira, iyo yekutora coefficient inoderera nepo chikamu chaicho cheiyo refractive index ichiwedzera. Nekuita kwakadai, mumashandisirwo anoshanda, iyo modulation ye-high-frequency signals inogona kuwanikwa nekugadzirisa nhamba yevatakuri mune transmission waveguide. Pakupedzisira, 0 uye 1 masiginecha anoonekwa panzvimbo yekubuda, achitakura-yepamusoro-kumhanya masaini emagetsi pane amplitude yechiedza chakasimba. Nzira yekuita izvi ndeye kuburikidza nePN junction. Vatakuri vemahara yesilicon yakachena vashoma kwazvo, uye shanduko yehuwandu haina kukwana kuti isangane nekushandurwa kweiyo refractive index. Naizvozvo, zvinodikanwa kuti uwedzere hwaro hwekutakura mune yekufambisa waveguide nedoping silicon kuti uwane shanduko mune refractive index, nekudaro kuwana yakakwira mwero modulation.
Nguva yekutumira: May-12-2025