Imodulator ye-EoUthotho: Isantya esiphezulu, i-voltage ephantsi, isixhobo sokulawula i-lithium niobate encinci yobukhulu obuncinci kunye ne-polarization yefilimu encinci
Amaza okukhanya kwindawo ekhululekileyo (kunye namaza e-electromagnetic kwezinye iifrequencies) ngamaza okushefa, kwaye indlela yokungcangcazela kweendawo zayo zombane kunye nemagnethi ineendlela ezahlukeneyo ezinokwenzeka kwicandelo elinqamlezileyo kwicala lokusasazeka, eliyipropati ye-polarization yokukhanya. I-Polarization inexabiso elibalulekileyo lokusetyenziswa kwicandelo lonxibelelwano oluhambelanayo lwe-optical, ukufunyanwa kwemizi-mveliso, i-biomedicine, ukuqonda umhlaba kude, umkhosi wanamhlanje, uhambo ngeenqwelo-moya kunye nolwandle.
Kwindalo, ukuze zikwazi ukuhamba kakuhle, izinto ezininzi eziphilayo ziye zavelisa iinkqubo ezibonakalayo ezinokwahlula i-polarisation yokukhanya. Umzekelo, iinyosi zinamehlo amahlanu (amehlo amathathu angawodwa, amehlo amabini adibeneyo), ngalinye linamehlo amancinci angama-6,300, anceda iinyosi ukuba zifumane imephu ye-polarisation yokukhanya kuzo zonke iindlela esibhakabhakeni. Inyosi ingasebenzisa imephu ye-polarisation ukufumana nokukhokela ngokuchanekileyo iintlobo zayo kwiintyatyambo ezizifumanayo. Abantu abanamalungu omzimba afana neenyosi ukuze baqonde i-polarisation yokukhanya, kwaye kufuneka basebenzise izixhobo zokwenziwa ukuze baqonde kwaye balawule i-polarisation yokukhanya. Umzekelo oqhelekileyo kukusetyenziswa kweeglasi ze-polarisation ukuqondisa ukukhanya ukusuka kwimifanekiso eyahlukeneyo ukuya emehlweni asekhohlo nasekunene kwi-perpendicular polarisations, engumgaqo weemuvi ze-3D kwi-cinema.
Uphuhliso lwezixhobo zokulawula i-optical polarization ezisebenza kakuhle yeyona nto iphambili ekuphuhliseni iteknoloji yokusetyenziswa kokukhanya okupholisiweyo. Izixhobo eziqhelekileyo zokulawula i-polarization ziquka i-polarization state generator, i-scrambler, i-polarization analyzer, i-polarization controller, njl. Kwiminyaka yakutshanje, iteknoloji yokulawula i-optical polarization ikhawulezisa inkqubela phambili kwaye idibanisa nzulu kwiindawo ezininzi ezikhulayo ezibalulekileyo.
Ukuthathaunxibelelwano lwe-opticalumzekelo, iqhutywa yimfuno yokudluliselwa kwedatha enkulu kwiindawo zedatha, ukuhambelana komgama omdei-opticalItekhnoloji yonxibelelwano isasazeka kancinci kancinci ukuya kwizicelo zonxibelelwano olufutshane ezibuthathaka kakhulu kwiindleko kunye nokusetyenziswa kwamandla, kwaye ukusetyenziswa kwetekhnoloji yokulawula i-polarization kunokunciphisa ngempumelelo iindleko kunye nokusetyenziswa kwamandla kweenkqubo zonxibelelwano oluhambelanayo lwe-optical ezimfutshane. Nangona kunjalo, okwangoku, ulawulo lwe-polarization luqatshelwa ikakhulu ziinxalenye ze-optical ezihlukeneyo, ezithintela kakhulu ukuphuculwa kokusebenza kunye nokunciphisa iindleko. Ngophuhliso olukhawulezileyo lwetekhnoloji yokudibanisa i-optoelectronic, ukuhlanganiswa kunye ne-chip ziindlela ezibalulekileyo kuphuhliso lwexesha elizayo lwezixhobo zokulawula i-optical polarization.
Nangona kunjalo, ii-waveguides ze-optical ezilungiselelwe kwiikristale ze-lithium niobate zendabuko zineengxaki zomahluko omncinci we-refractive index kunye nokukwazi ukubopha intsimi ye-optical ebuthathaka. Kwelinye icala, ubungakanani besixhobo bukhulu, kwaye kunzima ukuhlangabezana neemfuno zophuhliso zokudibanisa. Kwelinye icala, ukusebenzisana kwe-electrooptical kubuthathaka, kwaye i-drive voltage yesixhobo iphezulu.
Kule minyaka yangoku,izixhobo zefotonikiIzixhobo zefilimu ezisekelwe kwi-lithium niobate thin film ziye zenza inkqubela phambili kwimbali, zifikelela kwisantya esiphezulu kunye ne-voltages ephantsi yokuqhuba kunezemveliizixhobo ze-lithium niobate photonic, ngoko ke ziyathandwa lishishini. Kuphando lwakutshanje, i-chip yokulawula i-optical polarization edibeneyo ifumaneka kwiqonga lokudibanisa i-lithium niobate thin film photonic, kubandakanya i-polarization generator, i-scrambler, i-polarization analyzer, i-polarization controller kunye neminye imisebenzi ephambili. Iiparameter eziphambili zezi chips, ezifana nesantya sokuvelisa i-polarization, i-polarization extinction ratio, isantya sokuphazamiseka kwe-polarization, kunye nesantya sokulinganisa, zibeke iirekhodi ezintsha zehlabathi, kwaye zibonise ukusebenza okuhle kakhulu kwisantya esiphezulu, iindleko eziphantsi, ukulahleka kwe-parasitic modulation, kunye ne-low drive voltage. Iziphumo zophando okokuqala ngqa zifumanisa uthotho lwentsebenzo ephezulu.i-lithium niobateIzixhobo zokulawula i-optical polarization zefilimu encinci, ezenziwe ngeeyunithi ezimbini ezisisiseko: 1. Ukujikeleza/ukuqhekeza i-polarization, 2. I-Mach-zindel interferometer (ingcaciso >), njengoko kubonisiwe kuMfanekiso 1.
Ixesha leposi: Disemba-26-2023