Ukusebenza okuphezulu kwe-electro-optic modulator: ifilimu encane ye-lithium niobate modulator

Ukusebenza okuphezulu kwe-electro-optic modulator:ifilimu encane ye-lithium niobate modulator

I-electro-optical modulator (I-EOM module) iyimoduli eyenziwe kusetshenziswa umphumela we-electro-optical wamakristalu athile e-electro-optical, engaguqula amasiginali kagesi anesivinini esikhulu kumadivayisi okuxhumana abe amasignali abonakalayo. Lapho ikristalu ye-electro-optic ingaphansi kwensimu kagesi esetshenzisiwe, inkomba ye-refractive yekristalu ye-electro-optic izoshintsha, futhi izici ze-optical wave zekristalu nazo zizoshintsha ngokufanele, ukuze kuqashelwe ukuguquguquka kwe-amplitude, isigaba kanye nesimo se-polarization yesiginali yokubona, futhi iguqule isignali ye-elekthronikhi enesivinini esiphezulu kusiginali yokuxhumana ngomshini wokuxhumana we-modu.

Njengamanje, kunezinhlobo ezintathu eziyinhloko zeama-modulators e-electro-opticemakethe: ama-modulators asekelwe ku-silicon, ama-indium phosphide modulators nefilimu elincanyanai-lithium niobate modulator. Phakathi kwazo, i-silicon ayinayo i-coefficient eqondile ye-electro-optical, ukusebenza kujwayelekile kakhulu, kulungele kuphela ukukhiqizwa kwe-modulator ye-modulator ye-transceiver yedatha yebanga elifushane, i-indium phosphide nakuba ifanele imodyuli ye-medium-long optical network transceiver, kodwa izidingo zenqubo yokuhlanganisa ziphakeme kakhulu, izindleko ziphakeme kakhulu, isicelo singaphansi kokulinganiselwa okuthile. Ngokuphambene, i-lithium niobate crystal ayicebile kuphela ngomphumela we-photoelectric, isethi umphumela we-photorefractive, umphumela ongewona oqondile, umphumela we-electro-optical, umphumela we-acoustic optical, umphumela we-piezoelectric kanye nomphumela we-thermoelectric ulingana neyodwa, futhi ngenxa yesakhiwo sayo se-lattice kanye nesakhiwo esinesici esicebile, izakhiwo eziningi ze-lithium niobate zingalawulwa kakhulu yi-super crystal element, i-achiement control, njll. ukusebenza kwe-photoelectric, okufana ne-electro-optical coefficient efika ku-30.9pm/V, ephakeme kakhulu kune-indium phosphide, futhi inomphumela wokutshiyoza omncane (umphumela wokutshiyoza: ibhekisela kwinto yokuthi imvamisa engaphakathi kokushaya iyashintsha ngokuhamba kwesikhathi phakathi nenqubo yokudlulisa i-laser pulse. Umphumela omkhulu wokutshiyoza uphumela esilinganisweni esimaphakathi sesignali nomphumela omuhle we-nonlinear ratio (isilinganiso esihle sesignali kuya ku-extinoise) isignali "ivuliwe" esimweni sayo "sokucisha", kanye nokuzinza okuphezulu kwedivayisi. Ngaphezu kwalokho, indlela yokusebenza yefilimu encane ye-lithium niobate modulator ihlukile kuleyo yemodulator esekwe ku-silicon kanye ne-indium phosphide modulator esebenzisa izindlela zokumodulation ezingaqondile, esebenzisa umphumela oqondile we-electro-optical ukulayisha isignali eguquliwe kagesi kumphathi we-optical, futhi izinga lokuguquguquka linqunywa ikakhulukazi ukusebenza kwe-modude ye-microwave ephakeme kanye nesivinini somugqa we-electroatha kungaba nesivinini esiphansi se-electroade. okuzuziwe. Ngokusekelwe kulokhu okungenhla, i-lithium niobate isibe yisinqumo esihle sokulungiselela ama-modulators asebenza kahle kakhulu e-electro-optic, anohlu olubanzi lwezinhlelo zokusebenza ku-100G/400G amanethiwekhi okuxhumana ahambisanayo optical kanye nezikhungo zedatha ye-Ultra-high-speed, futhi ingafinyelela amabanga amade okudlulisela angaphezu kwamakhilomitha ayi-100.

I-Lithium niobate njengento ephazamisayo ye-"photon revolution", nakuba iqhathaniswa ne-silicon ne-indium phosphide inezinzuzo eziningi, kodwa ngokuvamile ibonakala ngesimo sempahla eningi kudivayisi, ukukhanya kukhawulelwe ku-waveguide yendiza eyakhiwe ngokusakazwa kwe-ion noma ukushintshaniswa kwe-proton, umehluko wenkomba ye-refractive uvame ukuba mncane kakhulu (mayelana nosayizi omkhulu we-0.02), ubukhulu bedivayisi. Kunzima ukuhlangabezana nezidingo ze-miniaturization kanye nokuhlanganiswa kweimishini yokubona, futhi umugqa wayo wokukhiqiza usahlukile kumugqa wenqubo wangempela we-microelectronics, futhi kunenkinga yezindleko eziphakeme, ngakho-ke ukwakheka kwefilimu encane kuyisiqondiso esibalulekile sokuthuthukiswa kwe-lithium niobate esetshenziswa kuma-modulators e-electro-optical.