I-bipolar eguquguqukayoi-modulator yesigaba
Enkundleni yokuxhumana kwe-optical enesivinini esiphezulu kanye nobuchwepheshe be-quantum, ama-modulators endabuko abhekene nezinkinga ezinzima zokusebenza! Ukuhlanzeka kwesignali okunganele, ukulawulwa kwesigaba okungaguquki, kanye nokusebenzisa amandla esistimu aphezulu ngokweqile - lezi zinselele zithiya ukuthuthukiswa kobuchwepheshe.
I-Bipolari-electro-optical phase moduleingakwazi ukufeza ukuguquguquka okuqhubekayo kwezigaba ezimbili kwesigaba samasignali optical. Zihlanganisa ukuhlanganiswa okuphezulu, ukulahlekelwa kokufaka okuphansi, umkhawulokudonsa ophezulu wokumodulation, i-voltage ephansi ye-half-wave, kanye namandla amakhulu okubona umonakalo. Asetshenziswa kakhulu ekulawuleni i-optical chirp ezinhlelweni zokuxhumana ze-high-speed optical kanye nokukhiqizwa kombuso okubambene ezinhlelweni zokusabalalisa ukhiye we-quantum. Ukukhiqizwa kwamabhande aseceleni ezinhlelweni ze-ROF kanye nokwehliswa kwe-Brillouin scattering (SBS) evuselelwe ezinhlelweni zokuxhumana ze-analog optical fibre, phakathi kwezinye izinkambu.
Ii-bipolar phase modulatorifinyelela ukulawula okunembile kwesigaba samasignali optical ngokusebenzisa izigaba ezimbili eziqhubekayo zesigaba sokushintshwa, futhi ikakhulukazi ibonisa inani eliyingqayizivele ekuxhumaneni kwe-optical ngesivinini esiphezulu kanye nokusabalalisa ukhiye we-quantum.
1. Ukuhlanganiswa okuphezulu kanye nomkhawulo omkhulu wokulimala: Yamukela umklamo ohlanganisiwe we-monolithic, uhlangene ngosayizi, futhi usekela umonakalo omkhulu wamandla okukhanya. Ingahambisana ngokuqondile nemithombo ye-laser enamandla amakhulu futhi ifanele ukukhiqizwa okusebenzayo kwamabhande aseceleni ama-millimeter-wave ezinhlelweni ze-ROF (Optical Wireless).
2. Ukucindezelwa kwe-Chirp kanye nokuphathwa kwe-SBS: Ekudluliselweni okuhambisanayo kwesivinini esiphezulu, umugqa weukuguqulwa kwesigabaingacindezela ngempumelelo ukutshiyoza kwezimpawu zokukhanya. Ekuxhumaneni kwe-analog optical fibre, ngokuthuthukisa ukujula kokuguquguquka kwesigaba, umphumela we-Brillouin scattering (SBS) ovuselelwe ungancishiswa kakhulu, ngaleyo ndlela andise ibanga lokudlulisela.
Ekusabalaliseni ukhiye we-quantum (QKD), isimo esibambekene samapheya e-photon sisebenza “njengokhiye we-quantum” wokuxhumana okuvikelekile - ukunemba kokulungiswa kwawo kunquma ngokuqondile impahla engalahli yokhiye. "Ukuguquguquka" kwe-bipolar phase modulator kubonakala ekhonweni layo lokushintsha ngokuguquguqukayo imingcele yesigaba ukuze ivumelane nokuphazamiseka kwemvelo kwezixhumanisi ezihlukahlukene ze-fiber optical (njengokushintsha kwezinga lokushisa kanye nesigaba sokukhukhuleka okubangelwa ukucindezeleka komshini), ukuqinisekisa ukusebenza kahle kwesizukulwane esiphezulu samapheya e-photon abanjwe. "Ukuzinza" kufinyelelwa ngokulawula okunembile kwezinga lokushisa kanye nobuchwepheshe bemvamisa yokuvala isigaba, okucindezela umsindo wesigaba ngaphansi komkhawulo womsindo we-quantum futhi kuvimbele ukuhlangana kwezimo ze-quantum ngesikhathi sokudlulisela. Lesi sici esikabili “sokuvumelana nezimo + ukuzinza” asithuthukisi nje kuphela izinga lokusatshalaliswa okubambekayo ebangeni elifushane kumanethiwekhi endawo yedolobha elikhulu (njengezinga lephutha elincane elingaphansi kuka-1% phakathi kwamakhilomitha angu-50), kodwa futhi sisekela ubuqotho bokhiye ekudluliseleni amabanga amade kumanethiwekhi ahlanganayo (njengamakhilomitha angaphezu kwekhulu okwakha amadolobha angaphansi), inethiwekhi yokuxhumana evikelekile” ye-quantum.
Isikhathi sokuthumela: Jul-22-2025