Uthotho lweModulator ye-Eo: Kutheni i-lithium niobate ibizwa ngokuba yi-silicon yokukhanya

I-Lithium niobate ikwaziwa ngokuba yi-optical silicon. Kukho intetho ethi “i-lithium niobate kunxibelelwano lwe-optical nto leyo eyiyo i-silicon kwi-semiconductors.” Ukubaluleka kwe-silicon kuguquko lwe-elektroniki, ngoko ke yintoni eyenza eli shishini libe nethemba kangaka ngezinto ze-lithium niobate?

I-Lithium niobate (LiNbO3) yaziwa ngokuba yi-"optical silicon" kushishino. Ukongeza kwiingenelo zendalo ezifana nokuzinza okuhle komzimba kunye neekhemikhali, ifestile ebanzi ecacileyo (0.4m ~ 5m), kunye ne-electro-optical coefficient enkulu (33 = 27 pm/V), i-lithium niobate ikwaluhlobo lwekristale enemithombo emininzi yezinto eziluhlaza kunye nexabiso eliphantsi. Isetyenziswa kakhulu kwiifilitha ezisebenzayo eziphezulu, izixhobo ze-electro-optical, indawo yokugcina i-holographic, isibonisi se-3D holographic, izixhobo ze-nonlinear optical, unxibelelwano lwe-optical quantum njalo njalo. Kwicandelo lonxibelelwano lwe-optical, i-lithium niobate ngokuyintloko idlala indima yokuguqulwa kokukhanya, kwaye ibe yimveliso ephambili kwi-modulator ye-electro-optical yangoku ekhawulezayo (I-Eo Modulator) imakethi.

Okwangoku, kukho iindlela ezintathu eziphambili zokuguqula ukukhanya kwishishini: ii-electro-optical modulators (Eo Modulator) ezisekelwe kukukhanya kwe-silicon, i-indium phosphide kunyei-lithium niobateiiplatifomu zezinto. I-Silicon optical modulator isetyenziswa kakhulu kwiimodyuli ze-transceiver zonxibelelwano lwedatha ezimfutshane, i-indium phosphide modulator isetyenziswa kakhulu kwiimodyuli ze-transceiver zenethiwekhi yonxibelelwano lwe-optical ezikude nezikude, kwaye i-lithium niobate electro-optical modulator (i-Eo Modulator) isetyenziswa kakhulu kwiinkonzo zonxibelelwano oluhambelanayo lwenethiwekhi yomqolo olude kunye neziko ledatha le-100/200Gbps elihamba ngesantya esiphezulu. Phakathi kwezi platifomu zintathu ze-modulator ezikhawulezayo eziphezulu, i-thin film lithium niobate modulator evele kwiminyaka yakutshanje ine-bandwidth inzuzo engenakufaniswa nezinye izixhobo.

I-Lithium niobate luhlobo lwento engaphiliyo, ifomula yeekhemikhaliI-LiNbO3, yikristale engalunganga, ikristale ye-ferroelectric, ikristale ye-lithium niobate e-polarized ene-piezoelectric, i-ferroelectric, i-photoelectric, i-nonlinear optics, i-thermoelectric kunye nezinye iimpawu zezinto, ngaxeshanye inesiphumo se-photorefractive. Ikristale ye-lithium niobate yenye yezona zinto zintsha ezisetyenziswa kakhulu kwi-inorganic, sisixhobo esihle sokutshintshiselana kwamandla e-piezoelectric, izinto ze-ferroelectric, izinto ze-electro-optical, i-lithium niobate njengesixhobo se-electro-optical kunxibelelwano lwe-optical sidlala indima ekuguquleni ukukhanya.

Izinto ze-lithium niobate, ezaziwa ngokuba yi-"optical silicon", zisebenzisa inkqubo yamva nje ye-micro-nano ukufutha umaleko we-silicon dioxide (SiO2) kwi-silicon substrate, zibophe i-lithium niobate substrate kubushushu obuphezulu ukuze zakhe umphezulu oqhekekileyo, kwaye ekugqibeleni zisuse ifilimu ye-lithium niobate. I-lithium niobate modulator yefilimu encinci elungisiweyo ineengenelo zokusebenza okuphezulu, iindleko eziphantsi, ubungakanani obuncinci, imveliso enkulu, kunye nokuhambelana netekhnoloji ye-CMOS, kwaye sisisombululo esikhuphisanayo sokunxibelelana kwe-optical ngesantya esiphezulu kwixesha elizayo.

Ukuba iziko lenguquko ye-elektroniki libizwa ngegama lezinto ze-silicon ezenze ukuba kube nokwenzeka, ngoko utshintsho lwe-photonics lunokulandelwa kwi-lithium niobate, eyaziwa ngokuba yi-"optical silicon" i-lithium niobate yinto engenambala ecacileyo edibanisa iziphumo ze-photorefractive, iziphumo ezingezizo ezingqalileyo, iziphumo ze-electro-optical, iziphumo ze-acousto-optical, iziphumo ze-piezoelectric kunye neziphumo zobushushu. Uninzi lweempawu zayo zinokulawulwa yi-crystal composition, i-element doping, ulawulo lwe-valence state kunye nezinye izinto. Isetyenziswa kakhulu ukulungiselela i-optical waveguide, i-optical switch, i-piezoelectric modulator,i-modulator ye-electro-optical, ijenereyitha yesibini yeharmonic, i-laser frequency multiplier kunye nezinye iimveliso. Kwishishini lonxibelelwano lwe-optical, ii-modulators ziyimfuneko ebalulekileyo kwi-lithium niobate.