Indima yefilimu encinci ye-lithium niobate kwi-electro-optic modulator

Indima yefilimu encinci ye-lithium niobate kwii-electro-optic modulator
Ukususela ekuqaleni kolu shishino ukuza kuthi ga ngoku, amandla onxibelelwano lwe-single-fiber anyuke ngezigidi zezihlandlo, kwaye inani elincinci lophando lwangoku lidlule amashumi ezigidi zezihlandlo. I-Lithium niobate idlale indima enkulu embindini woshishino lwethu. Kwimihla yokuqala yonxibelelwano lwe-optical fiber, ukuguqulwa kwesignali ye-optical kwakulungiselelwa ngokuthe ngqo kwi-ilezaLe ndlela yokuguqula iyamkeleka kwizicelo ze-bandwidth ephantsi okanye umgama omfutshane. Kwizicelo ze-modulation ezinesantya esiphezulu kunye nomgama omde, akuyi kubakho bandwidth yaneleyo kwaye itshaneli yokudlulisela ibiza kakhulu ukuhlangabezana nezicelo zomgama omde.
Phakathi konxibelelwano lwefayibha ye-optical, i-signal modulation ikhawuleza kwaye ikhawuleze ukuhlangabezana nokwanda komthamo wonxibelelwano, kwaye i-optical signal modulation mode iqala ukwahlukana, kwaye iindlela ezahlukeneyo ze-modulation zisetyenziswa kwi-short-middle networking kunye ne-long-middle trunk networking. I-direct modulation engabizi kakhulu isetyenziswa kwi-short-middle networking, kwaye i-"electro-optic modulator" eyahlukileyo isetyenziswa kwi-long-middle trunk networking, eyahlulwe kwi-laser.
I-Electro-optic modulator isebenzisa isakhiwo sokuphazamiseka kweMachzender ukuguqula isignali, ukukhanya yi-electromagnetic wave, ukuphazamiseka okuzinzileyo kwe-electromagnetic wave kufuna i-stable control frequency, phase kunye ne-polarization. Sihlala sikhankanya igama, elibizwa ngokuba yi-interference fringes, ukukhanya kunye ne-dark fringes, indawo eqaqambileyo apho ukuphazamiseka kwe-electromagnetic kuphuculiswa khona, ubumnyama yindawo apho ukuphazamiseka kwe-electromagnetic kubangela ukuba amandla abe buthathaka. Ukuphazamiseka kweMahzender luhlobo lwe-interferometer enesakhiwo esikhethekileyo, esisiphumo sokuphazamiseka esilawulwa ngokulawula isigaba somqadi omnye emva kokuqhekeka komqadi. Ngamanye amazwi, isiphumo sokuphazamiseka sinokulawulwa ngokulawula isigaba sokuphazamiseka.
I-Lithium niobate le nto isetyenziswa kunxibelelwano lwefayibha ye-optical, oko kukuthi, ingasebenzisa inqanaba le-voltage (isignali yombane) ukulawula isigaba sokukhanya, ukufezekisa ukuguqulwa kwesignali yokukhanya, olu lulwalamano phakathi kwe-electro-optical modulator kunye ne-lithium niobate. I-modulator yethu ibizwa ngokuba yi-electro-optic modulator, ekufuneka iqwalasele zombini ukuthembeka kwesignali yombane kunye nomgangatho we-modulation yesignali ye-optical. Umthamo wesignali yombane we-indium phosphide kunye ne-silicon photonics ungcono kunowe-lithium niobate, kwaye umthamo wesignali ye-optical ubuthathaka kancinci kodwa ungasetyenziswa, nto leyo edala indlela entsha yokubamba ithuba lemarike.
Ukongeza kwiipropati zazo zombane ezibalaseleyo, i-indium phosphide kunye ne-silicon photonics zinezibonelelo ze-miniaturization kunye ne-integration ezingenayo i-lithium niobate. I-Indium phosphide incinci kune-lithium niobate kwaye ine-integration degree ephezulu, kwaye ii-silicon photons zincinci kune-indium phosphide kwaye zine-integration degree ephezulu. Intloko ye-lithium niobate njengei-modulatorubude bayo buphindwe kabini kune-indium phosphide, kwaye inokuba yimodulator kuphela kwaye ayinakukwazi ukudibanisa eminye imisebenzi.
Okwangoku, i-electro-optical modulator ifikelele kwixesha le-100 yeebhiliyoni zeerandi zesimboli, (i-128G yi-128 yeebhiliyoni zeerandi), kwaye i-lithium niobate iphinde yalwa ukuze ithathe inxaxheba kukhuphiswano, kwaye inethemba lokukhokela eli xesha kungekudala, ithatha ukhokelo lokungena kwimarike ye-250 yeebhiliyoni zeerandi zesimboli. Ukuze i-lithium niobate iphinde ibambe le marike, kuyimfuneko ukuhlalutya ukuba yintoni i-indium phosphide kunye ne-silicon photons ezinayo, kodwa i-lithium niobate ayinayo. Oko kukusebenza kombane, ukuhlanganiswa okuphezulu, kunye ne-miniaturization.
Utshintsho lwe-lithium niobate lukwii-engile ezintathu, i-engile yokuqala yindlela yokuphucula amandla ombane, i-engile yesibini yindlela yokuphucula ukuhlanganiswa, kwaye i-engile yesithathu yindlela yokwenza i-miniaturize. Isisombululo kwezi engile zintathu zobugcisa sifuna isenzo esinye kuphela, oko kukuthi, ukucola i-lithium niobate material, ukhuphe umaleko omncinci kakhulu we-lithium niobate material njenge-optical waveguide, ungayila kwakhona i-electrode, uphucule amandla ombane, uphucule i-bandwidth kunye nokusebenza kakuhle kwe-modulation yesignali yombane. Ukuphucula amandla ombane. Le filimu inokuqhotyoshelwa kwi-silicon wafer, ukuze kufezekiswe ukuhlanganiswa okuxutyiweyo, i-lithium niobate njenge-modulator, okuseleyo kokuhlanganiswa kwe-silicon photon, amandla e-silicon photon miniaturization ayabonakala kubo bonke, ifilimu ye-lithium niobate kunye nokuhlanganiswa okuxutyiweyo kwe-silicon light, ukuphucula ukuhlanganiswa, ukwenziwa kwe-miniaturization yendalo.
Kungekudala, i-electro-optical modulator iza kungena kwixesha le-200 yeebhiliyoni zeerandi zesimboli, ukungonakali kwe-indium phosphide kunye ne-silicon photons kuya kucaca ngakumbi, kwaye inzuzo ye-optical ye-lithium niobate iya isanda, kwaye ifilimu encinci ye-lithium niobate iphucula ukungonakali kwale nto njenge-modulator, kwaye imboni igxile kule "film encinci ye-lithium niobate", oko kukuthi, ifilimu encinci.i-modulator ye-lithium niobateLe yindima ye-thin film lithium niobate kwicandelo lee-electro-optical modulators.