02modulator elektaroonik ahiyohabaynta elektro-opticshanlada inta jeer indhaha
Saamaynta Electro-optical waxa loola jeedaa saamaynta in index refractive maadada isbedelo marka beer koronto la codsado. Waxaa jira laba nooc oo waaweyn oo ah saamaynta electro-optical, mid waa saamaynta aasaasiga ah ee electro-optical, oo sidoo kale loo yaqaan saamaynta Pokels, taas oo loola jeedo isbeddelka tooska ah ee tusaha wax-soo-saarka wax-soo-saarka leh ee korontada ku shaqeeya. Midda kale waa saamaynta labaad ee elektiroonigga ah, oo sidoo kale loo yaqaan saamaynta Kerr, taas oo isbeddelka index refractive ee maaddadu ay u dhiganto labajibbaaran ee beerta korantada. Inta badan modulators electro-optical waxay ku salaysan yihiin saamaynta Pokels. Isticmaalka modulator-ka elektiroonigga ah, waxaan wax ka beddeli karnaa wejiga iftiinka dhacdada, iyadoo ku saleysan qaabeynta wejiga, iyada oo loo marayo beddelaad gaar ah, waxaan sidoo kale beddeli karnaa xoogga ama kala soocida iftiinka.
Waxaa jira dhowr qaab-dhismeedyo qadiimi ah oo kala duwan, sida ku cad sawirka 2. (a), (b) iyo (c) dhammaan waa qaab-dhismeedyo hal-abuure ah oo leh qaab-dhismeed fudud, laakiin ballaca xariiqda shanlada soo noqnoqda indhaha ee la soo saaray waxaa xaddiday koronto-optical-ka baaxadda. Haddii loo baahan yahay shanlada soo noqnoqoshada indhaha oo leh soo noqnoqosha sare, laba ama in ka badan oo modulators ayaa loo baahan yahay gudaha cascade, sida ku cad sawirka 2(d)(e). Qaab dhismeedka ugu dambeeya ee abuura shanlada soo noqnoqda indhaha waxaa loo yaqaan 'electro-optical resonator', kaas oo ah modulator-ka elektiroonigga ah ee lagu dhejiyo resonator-ka, ama resonator-ka laftiisa ayaa soo saari kara saameyn koronto-optical ah, sida ku cad sawirka 3.
FIG 2 Dhowr qalab oo tijaabo ah oo loogu talagalay abuurista shanlooyinka soo noqnoqda indhaha oo ku salaysanmodulators electro-optic
FIG 3 Qaab dhismeedka dhowr dalool koronto-optical ah
03 Hababka Electro-optic modulation sifooyinka shanlada soo noqnoqda indhaha
Faa'iidada kow: tunability
Maadaama ilayska iftiinka uu yahay leysarka ballaaran ee la hagaajin karo, iyo modulator-ka elektro-optical-ka sidoo kale uu leeyahay xaddidaad xaddidan oo soo noqnoqota, shanlada soo noqnoqda ee qalabka korantada sidoo kale waa la hagaajin karaa. Marka lagu daro inta jeer ee la hagaajin karo, maadaama jiilka mowjadaha ee modulator-ku yahay mid la hagaajin karo, soo noqnoqda soo noqnoqda ee shanlada soo noqnoqda indhaha ayaa sidoo kale la hagaajin karaa. Tani waa faa'iido in shanlooyinka soo noqnoqda indhaha ee ay soo saaraan laysarka qaab-ku-xidhan iyo resonators-yar aysan haysan.
Faa'iidada laba: soo noqnoqda soo noqnoqda
Heerka soo noqnoqda ma aha oo kaliya dabacsanaan, laakiin sidoo kale waa la gaari karaa iyada oo aan la beddelin qalabka tijaabada ah. Baaxadda xariiqda shanlada soo noqnoqoshada indhaha ee korantada-optic-ga ayaa qiyaas ahaan u dhiganta bandwidth-ka modulation-ka, baaxadda guud ee korantada modulator-ka-ganacsigu waa 40GHz, dhammaan hababka kale marka laga reebo resonator-ka yar (kaas oo gaari kara 100GHz).
Faa'iidada 3: qaabaynta muuqaalka
Marka la barbar dhigo shanlada indhaha ee ay soo saaraan siyaabo kale, qaabka saxanka indhaha ee shanlada indhaha ee elektro-optic-ga ah waxaa lagu go'aamiyaa dhowr darajo oo xorriyad ah, sida signalka soo noqnoqda raadiyaha, danab eexda, kala soocida dhacdada, iwm, kuwaas oo noqon kara loo isticmaalo in lagu xakameeyo xoojinta shanlooyinka kala duwan si loo gaaro ujeeddada qaabaynta muuqaalka.
04 Codsiga shanlada soo noqnoqda ee modulator-ka indhaha
Codsiga dhabta ah ee modulator-ka modulator-ka shanlada indhaha, waxa loo qaybin karaa hal iyo laba-geesood shanlo. Fogaanta xariiqda hal nooc oo shanlo ah waa mid aad u cidhiidhi ah, markaa saxsanaan sare ayaa la gaari karaa. Isla mar ahaantaana, marka la barbar dhigo shanlada soo noqnoqoshada indhaha ee ay soo saarto laysarka qaab-qufulan, qalabka korantada modulator-ka shanlada indhaha ayaa ka yar oo si fiican loo hagaajin karo. Qiyaasta shanlada labalaabka ah waxaa soo saaray faragelinta laba shanlo oo isku xidhan oo leh soo noqnoqoshada soo noqnoqoshada oo kala duwan, farqiga u dhexeeya soo noqnoqda ayaa ah kala fogaanshaha xariiqda shanlada cusub ee faragelinta. Tiknoolajiyada shanlada soo noqnoqda ee indhaha waxa loo isticmaali karaa sawirka indhaha, kala duwanaanta, cabbirka dhumucda, qalabaynta qalabka, qaabaynta waveform spectrum spectrum, sawirida inta jeer ee raadiyaha, isgaarsiinta fog, qarsoodiga indhaha iyo wixii la mid ah.
FIG 4 Xaaladda codsiga ee shanlada soo noqnoqda indhaha: Qaadashada cabbirka astaanta rasaasta xawaaraha sare leh tusaale ahaan
Waqtiga boostada: Dec-19-2023