Selelekela sa Sebopeho le Tshebetso yaModuli ea optic ea Electro e tšesaane ea Lithium Niobate
An modulator ea electro-opticho latela dibopeho tse fapaneng, maqhubu a maqhubu, le dipolatefomo tsa filimi e tshesane ya lithium niobate, le papiso e felletseng ya tshebetso ya mefuta e fapaneng yaLi-modulator tsa EOM, hammoho le tlhahlobo ea lipatlisiso le ts'ebeliso eali-modulator tsa lithium niobate tsa filimi e tšesaanemasimong a mang.
1. Modulator ea filimi e tšesaane ea lithium niobate e sa hlakang
Mofuta ona oa modulator o ipapisitse le phello e ntle ea electro-optic ea kristale ea lithium niobate 'me ke sesebelisoa sa bohlokoa bakeng sa ho fihlella puisano ea optical e potlakileng le e hole. Ho na le meaho e meraro e meholo:
1.1Modulator ea MZI ea electrode ea maqhubu a tsamaeang: Ena ke moralo o tloaelehileng ka ho fetisisa. Sehlopha sa lipatlisiso sa Lon č ar Univesithing ea Harvard se ile sa fumana mofuta oa ts'ebetso e phahameng ka lekhetlo la pele ka 2018, ka lintlafatso tse latelang ho kenyeletsoa ho kenya capacitive ho latela li-substrate tsa quartz (bandwidth e phahameng empa e sa lumellane le silicon) le ho lumellana le silicon ho latela substrate hollowing, ho fihlela bandwidth e phahameng (>67 GHz) le phetiso ea lets'oao le phahameng (joalo ka 112 Gbit/s PAM4).
1.2Modulator ea MZI e menehang: E le ho khutsufatsa boholo ba sesebelisoa le ho ikamahanya le li-module tse nyane tse kang QSFP-DD, kalafo ea polarization, cross waveguide kapa inverted microstructure electrodes li sebelisoa ho fokotsa bolelele ba sesebelisoa ka halofo le ho fihlela bandwidth ea 60 GHz.
1.3Modulator ea Polarization e le 'Ngoe/e 'Meli e Kopanetsoeng ea Orthogonal (IQ): E sebelisa mokhoa oa ho fetola maemo a holimo ho ntlafatsa sekhahla sa phetisetso. Sehlopha sa lipatlisiso sa Cai Univesithing ea Sun Yat sen se fihletse modulator ea pele ea polarization ea IQ e le 'ngoe ka 2020. Modulator ea IQ ea polarization e habeli e ntlafalitsoeng nakong e tlang e na le ts'ebetso e betere, 'me mofuta o thehiloeng holim'a substrate ea quartz o behile rekoto ea sekhahla sa phetisetso ea wavelength ea 1.96 Tbit/s.
2. Modulator ea resonant cavity mofuta oa filimi e tšesaane ea lithium niobate
Ho fihlella li-modulator tsa bandwidth tse nyane le tse kholo haholo, ho na le meaho e fapaneng ea cavity e nang le resonant e fumanehang:
2.1Modulator ea kristale ea photonic (PC) le micro ring: Sehlopha sa lipatlisiso sa Lin Univesithing ea Rochester se thehile modulator ea pele ea kristale ea photonic e sebetsang hantle haholo. Ho phaella moo, li-modulator tsa micro ring tse thehiloeng ho kopanyo e fapaneng ea silicon lithium niobate le kopanyo e ts'oanang le tsona li sisintsoe, li fihlella li-bandwidth tsa GHz tse 'maloa.
2.2Modulator ea resonant cavity ea Bragg grating: ho kenyeletsoa le Fabry Perot (FP) cavity, Bragg grating (WBG) ea waveguide, le modulator ea light light (SL). Meaho ena e etselitsoe ho leka-lekanya boholo, mamello ea ts'ebetso, le ts'ebetso, mohlala, modulator ea 2 × 2 FP resonant cavity e fihlella bandwidth e kholo haholo e fetang 110 GHz. Modulator ea light light e thehilweng ho Bragg grating e kopantsoeng e atolosa mefuta ea bandwidth e sebetsang.
3. Modulator ea filimi e tšesaane e kopantsoeng ea lithium niobate e sa tšoaneng
Ho na le mekhoa e meraro e meholo ea ho kopanya ho lumellana ha theknoloji ea CMOS lipulong tse thehiloeng ho silicon le ts'ebetso e ntle ea modulation ea lithium niobate:
3.1Mofuta wa kgokelo o sa tshwaneng: Ka ho hokahana ka ho toba le benzocyclobutene (BCB) kapa silicon dioxide, filimi e tshesane ya lithium niobate e fetisetswa sethaleng sa silicon kapa silicon nitride, e fihlella boemo ba wafer, kopanyo e tsitsitseng ya mocheso o phahameng. Modulator e bontsha bandwidth e phahameng (>70 GHz, esita le ho feta 110 GHz) le bokgoni ba phetiso ya letshwao la lebelo le phahameng.
3.2Tlhahiso ya maqhubu a ho tlosa motlakase Kopanyo e fapaneng: ho kenya silicon kapa silicon nitride hodima filimi e tshesane ya lithium niobate jwalo ka tataiso ya maqhubu a mojaro le hona ho fihlella phetoho e sebetsang ya electro-optic.
3.3Kopanyo e fapaneng ea khatiso ea phetiso ea Micro (μ TP): Ena ke theknoloji e lebelletsoeng ho sebelisoa bakeng sa tlhahiso e kholo, e fetisang lisebelisoa tse sebetsang tse entsoeng esale pele ho ea shebana le li-chip ka lisebelisoa tse nepahetseng haholo, ho qoba ts'ebetso e rarahaneng ea kamora ho sebetsa. E sebelisitsoe ka katleho ho li-platform tsa silicon nitride le silicon, e fihlella li-bandwidth tsa mashome a GHz.
Ka bokhutšoanyane, sengoloa sena se hlalosa ka mokhoa o hlophisehileng tsela ea theknoloji ea li-modulator tsa electro-optic tse thehiloeng lipolatefomong tse tšesaane tsa lithium niobate, ho tloha ho phehella meaho ea cavity e se nang resonant e sebetsang hantle le e kholo ea bandwidth, ho hlahloba meaho ea cavity e menyenyane ea resonant e nang le aturized, le ho kopanngoa le li-platform tsa photonic tse thehiloeng ho silicon tse hōlileng tsebong. E bontša bokhoni bo boholo le tsoelo-pele e tsoelang pele ea li-modulator tsa lithium niobate tse tšesaane ho phunyeletsa bothata ba ts'ebetso ea li-modulator tsa setso le ho fihlela puisano ea optical e potlakileng haholo.
Nako ea poso: Hlakubele-31-2026