Ifilimu elincanyana le-lithium niobate impahla kanye ne-film film lithium niobate modulator

Izinzuzo kanye nokubaluleka kwefilimu elincanyana le-Lithium Nithiyate kubuchwepheshe obuhlanganisiwe be-Photon Photon Technology

I-Microwave Photon TechnologyInezinzuzo ze-bandwidth enkulu esebenza, ikhono elinamandla lokucubungula kanye nokulahleka okuphansi kokulahlekelwa, okunamandla okuphula i-technical bottleneck yohlelo lwemininingwane yendabuko ye-microwave yendabuko futhi kuthuthukise ukusebenza kwemishini yolwazi lezempi, impi yezempi, ukuxhumana kanye nokulinganisa nokulinganisa. Kodwa-ke, uhlelo lwe-Photon Photon olususelwa kumadivayisi e-discrete lunezinkinga ezithile ezinjengevolumu enkulu, isisindo esindayo kanye nokuqina okungatheni, okuvinjelwe ngokungathi sína ukusetshenziswa kwe-microwave Photon Technology emapulatifomu ezikhampana nama-airborne. Ngakho-ke, ubuchwepheshe bezithombe ezihlanganisiwe ze-microwave buphenduka ukusekelwa okubalulekile ukwephula ukusetshenziswa kwe-Photon ye-Microwave ohlelweni lwama-elekthronikhi ezempi futhi unikeze ukudlala okugcwele ezinhlelweni ze-Microwave Photon Technology.

Njengamanje, ubuchwepheshe bokuhlanganisa be-SIPHICIENT Photonic kanye nobuchwepheshe bokuhlanganiswa kwe-IP-based Photonic buvuthwe ngokwengeziwe ngemuva kweminyaka yokuthuthuka emkhakheni wokuxhumana okubonakalayo, kanye nemikhiqizo eminingi ibekwe emakethe. Kodwa-ke, ukusetshenziswa kwe-Photon Microwave, kunezinkinga ezithile kulezi zinhlobo ezimbili ze-Photon Ukuhlanganisa ubuchwepheshe: ngokwesibonelo, i-nonliner electro-optical couefficial ye-IP Modulator kanye nezimpawu ezinkulu ezinamandla aphishelwa ubuchwepheshe be-Photowave Photon; Isibonelo, ukushintshwa kwe-silicon Optical okubona ukushintshwa kwendlela okubonakalayo, kungaba ngokususelwa emphumeleni we-thermal-optical, i-piezoelectric umphumela umphumela, inezinkinga zokushintsha amandla kancane, ukusetshenziswa kwamandla okushisa, okungakwazi ukubhekana nokuskena kwe-microwave.

I-Lithium Niobate ibilokhu ingukhetho lokuqala lwesivinini esikhuluUkushintshwa kwe-electro-opticizinto zokwakha ngenxa yethonya layo elihle kakhulu le-electro-optic umphumela. Kodwa-ke, i-lithium yendabuko ye-lithiumI-Electro-Optical ModulatorKwenziwe nge-MASSIVE Lithium niobate Crystal impahla, kanti usayizi wedivayisi mkhulu kakhulu, ongakwazi ukufeza izidingo zobuchwepheshe bezithombe ezihlanganisiwe ze-microwave. Ungahlanganisa kanjani izinto ze-Lithium niobate ezinama-cofficient aclert-optical aqondile ohlelweni lobuchwepheshe obuhlanganisiwe we-microwave Photon Photon usephenduke umgomo wabaphenyi abafanele. Ngo-2018, iqembu labacwaningi elivela eHarvard University e-United States libike okokuqala ubuchwepheshe bokuhlanganiswa kwe-Photonic ngokusekelwe ku-Fiffic Linkwingnium niobate, ngoba ubuchwepheshe bunobunzima bokuhlanganiswa kwe-electro-optical, uma sekwethulwe, ngokushesha kwenze ama-Photonics we-Photonic kanye ne-Microwave Photonics. Ngokombono wesicelo se-Microwave Photon, leli phepha libuyekeza ithonya nokubaluleka kwe-Photon Ukuhlanganisa Ubuchwepheshe obususelwa kwifilimu ye-Lithium niobate ekuthuthukiseni ubuchwepheshe be-Photowave Photon.

Ifilimu elincanyana le-lithium niobate impahla nefilimu emincaneI-Lithium niobate Modulator
Eminyakeni emibili yakamuva, kwaqhamuka uhlobo olusha lwe-lithium niobate okuqukethwe, okungukuthi, ifilimu le-lithium niobate lixoshwa kusuka ku-silica buffer crystal ngento ye-LNOI (i-Linbo3-on-insulator (5], okubizwa ngokuthi yi-Fithium Nithium Nithium Nithium Nithiyate Material kulokhu iphepha. I-Ridge WaveGuides enokuphakama kwama-nanometer angaphezu kwe-100 angafakwa kuma-film filmium ama-lithium niobate provels ngenqubo ye-wavegcuides eyenziwe kahle ye-lithium niobate wavegIdes ka-0.02), njengoba kukhonjisiwe ku-waveGuide ye-wave 1. nenkambu ye-microwave lapho uklama i-modulator. Ngakho-ke, kuyazuzisa ukufeza i-voltage ephansi ye-half-wave kanye ne-bandwidth enkulu yokushintshana ngokulandelana.

Ukuvela kwesimo sokulahleka okuphansi kwe-lithium niobate submicron waveguide kuphula i-bottleneck yokushayela okuphezulu kwe-voltage ephezulu yokushayela ye-lithium niobate electro-optic modulator. Isikhala se-electrode singancishiswa ncamashi ~ Ngakho-ke, ngaphansi kwamandla kagesi afanayo we-Half-wave, ubude bedivaysi bungancishiswa kakhulu uma kuqhathaniswa nesimonyo sendabuko. Ngasikhathi sinye, ngemuva kokuthola amapharamitha wobubanzi, ubukhulu kanye nesikhathi sokuphumula se-electrode yokuhamba yamehlo, njengoba kukhonjisiwe kwisibalo, i-modulator ingaba nekhono le-bandwidth ephakeme ye-ultra-high enkulu kune-100 GHz.

Fig.1 (a) Ukusatshalaliswa kwemodi ebaliwe kanye (b) nesithombe sesigaba sesiphambano se-Ln WaveGuide

I-Fig.2 (a) Ukwakhiwa kwe-waveguide ne-elektrode kanye (b) ne-coreplate ye-LN Modulator

Ukuqhathaniswa kwama-modulators amafilimu amancane we-lithium niobate anendabuko ye-lithium niobate yezentengiso yezentengiso, ama-modulators asuselwa ku-silico kanye nama-modulators we-libicon kanye namanye ama-modulators akhona akhona, amapharamitha aphambili wokuqhathanisa afaka:
(1) Umkhiqizo we-Half-wave we-Volt-Hered Pred
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(3) Ukulahleka kokufaka kokufakwa kwe-Optical (DB) esifundeni sokushintshana. Kungabonakala etafuleni ukuthi i-film filmil lithium niobate modulator inezinzuzo ezisobala ekumotini kwe-bandwidth, i-half-wave voltage, ukulahleka kwe-optical ukuhumusha nokunye.

I-Silicon, njengetshe lezitshe le-opoleelectronics elihlanganisiwe, liye lakhula kuze kube manje, inqubo ivuthiwe, i-miniaturization yayo ilungele ukuhlanganiswa okukhulu kwamadivayisi asebenzayo / okuphakelayo, bese kufundwa kakhulu emkhakheni wokuxhumana okubonakalayo. I-Searrier Carriers ikakhulukazi i-Carriers Deling-tution, umjovo wenethiwekhi kanye nokuqongelelwa kwenkampani yenethiwekhi. Phakathi kwazo, i-bandwidth yesimodeli isebenza kahle nge-linear degree carretion mechanism, kepha ngoba ukuhanjiswa kwensimu okubonakalayo okufana nokungafani kwesifunda se-depletion, lo mphumela kuzoholela ekunciphiseni kokukhanya kokushintsha kwabantu okulula kanye nesiginali ukuhlanekezela.

I-Modulator ye-INP inemiphumela evelele ye-electro-optical, kanye nesakhiwo se-quantur esinemininingwane eminingi singabona isilinganiso se-Ultra-high kanye nama-voltage Modage Modage nge-Vπ vol · l kuze kufike ku-0.156v · Kodwa-ke, ukuhlukahluka kwenkomba esele yenkambu kagesi kufaka amagama aqondile namangalisayo, kanye nokwanda kokuqina kwensimu kagesi kuzokwenza umphumela we-oda wesibili uvelele. Ngakho-ke, ama-modulators we-silicon ne-inp electro-optic adinga ukusebenzisa ama-bias ukwakha i-PN Junction lapho esebenza, futhi i-PNUNTION izoletha ukulahleka kokutholwa kokukhanya. Kodwa-ke, usayizi wesimondiselo walezi ezimbili mncane, usayizi we-IP Modulator we-1/4 ngu-1/4 we-LN Modulator. Ukuguqulwa okuphezulu kwentukuthelo, efanelekile ngobuningi obuphezulu namanethiwekhi wokuhambisa amafushane wedijithali afana nezikhungo zedatha. Umphumela we-Electro-Optical we-Lithium Niobate akanawo amaminithi wokumunca ukukhanya nokulahleka okuphansi, okulungele ukuhambisana kwebanga elideUkuxhumana kwe-Opticalngesilinganiso esikhulu nesilinganiso esiphakeme. Kuhlelo lwe-PhotoWave Photon, ama-electro-optical coufficients we-SI ne-INP angafanele ama-nonlinear, angalungele uhlelo lwe-Photowave Photon olulandela imicibisholo ephezulu nezinkinga ezinkulu. Izinto ze-lithium niobate zilungele uhlelo lokusebenza lwe-Photowave Photon ngenxa yokuhlengelwa kwe-electro-optic yalo ngokuphelele.