Babban aikin lantarki-optic modulator:bakin bakin fim lithium niobate modulator
Electro-optical modulator (EOM modulator) wani na'ura mai haɓakawa ne da aka yi ta amfani da tasirin electro-optical na wasu lu'ulu'u na electro-optical, wanda zai iya canza siginar lantarki mai sauri a cikin na'urorin sadarwa zuwa siginar gani. Lokacin da kristal electro-optic ya kasance ƙarƙashin filin lantarki da aka yi amfani da shi, ma'anar refractive na electro-optic crystal zai canza, kuma halayen motsi na gani na crystal kuma za su canza daidai, ta yadda za a gane yanayin girman girman, lokaci da polarization yanayin siginar gani, da kuma canza siginar lantarki mai sauri a cikin na'urar sadarwa zuwa siginar gani ta hanyar daidaitawa.
A halin yanzu, akwai manyan nau'ikan iri ukuelectrooptic modulatorsakan kasuwa: masu amfani da siliki, masu haɓaka indium phosphide da fim na bakin cikilithium niobate modulator. Daga cikin su, silicon ba shi da wani kai tsaye electro-Optical coefficient, wasan kwaikwayon ya fi general, kawai dace da samar da gajeren nesa data watsa transceiver module modulator, indium phosphide ko da yake ya dace da matsakaici-dogon Tantancewar sadarwa cibiyar sadarwa transceiver module, amma hadewa tsari bukatun ne musamman high, da kudin ne in mun gwada da high, aikace-aikace ne ƙarƙashin wasu iyakoki. Da bambanci, lithium niobate crystal ne ba kawai mai arziki a photoelectric sakamako, saita photorefractive sakamako, nononlinear sakamako, electro-Optical sakamako, acoustic Tantancewar sakamako, piezoelectric sakamako da thermoelectric sakamako ne daidai da daya, kuma godiya ga ta lattice tsarin da arziki lahani tsarin, da yawa kaddarorin na lithium niobate za a iya ƙwarai kayyade ta hanyar crystalvalle abun da ke ciki, aiki jihar doping, da dai sauransu Acoustic sakamako. Electro-optical coefficient na har zuwa 30.9pm / V, wanda ya fi girma fiye da indium phosphide, kuma yana da ɗan ƙaramin tasiri (tasirin chirp: yana nufin abin da ya faru cewa mitar a cikin bugun jini yana canzawa tare da lokaci a lokacin tsarin watsawar bugun jini na Laser. Babban sakamako mai girma yana haifar da ƙananan sigina-zuwa amo rabo da kuma kyakkyawan sakamako mai kyau na "jihar"). yanayinsa na “kashe”), da kuma ingantaccen na'urar kwanciyar hankali. Bugu da kari, tsarin aiki na sikirin fim din lithium niobate modulator ya sha bamban da na na'urar modulator na tushen silicon da indium phosphide modulator ta amfani da hanyoyin daidaitawa marasa daidaituwa, wanda ke amfani da tasirin lantarki mai linzamin linzamin kwamfuta don ɗaukar siginar da aka daidaita ta lantarki akan mai ɗaukar hoto, kuma ƙimar daidaitawa galibi an ƙaddara ta hanyar aikin injin injin lantarki kamar yadda saurin wutar lantarki zai iya kaiwa ga mafi girman layin wutar lantarki. Bisa ga abin da ke sama, lithium niobate ya zama kyakkyawan zaɓi don shirye-shiryen masu amfani da wutar lantarki mai mahimmanci, wanda ke da nau'o'in aikace-aikace a cikin 100G/400G masu dacewa da cibiyoyin sadarwa na gani da kuma matsananci-high-gudun bayanai, kuma yana iya samun nisa mai nisa fiye da kilomita 100.
Lithium niobate a matsayin wani abu mai banƙyama na "juyin juyi na hoto", kodayake idan aka kwatanta da silicon da indium phosphide yana da fa'idodi da yawa, amma sau da yawa yana bayyana a cikin nau'i mai yawa a cikin na'urar, hasken yana iyakance ga waveguide na jirgin sama wanda aka kafa ta hanyar ion diffusion ko proton musayar, bambance-bambancen index na refractive yawanci kadan ne (kimanin girman na'urar shine babban). Yana da wuya a sadu da bukatun miniaturization da haɗin kai nana'urorin gani, kuma layin samar da shi har yanzu ya bambanta da ainihin layin tsari na microelectronics, kuma akwai matsala na tsada mai tsada, don haka samar da fina-finai na bakin ciki muhimmin al'amari ne na ci gaba ga lithium niobate da ake amfani da su a cikin masu amfani da lantarki.
Lokacin aikawa: Dec-24-2024