Ulawulo lwe-electro-optic lwe-polarization lwenziwa ngokubhala kwe-laser ye-femtosecond kunye nokuguqulwa kwekristale yolwelo

I-polarization electro-opticulawulo lwenziwa ngokubhala kwe-laser ye-femtosecond kunye nokumodareyithwa kwekristale yolwelo

Abaphandi eJamani baye baphuhlisa inoveli indlela yolawulo lwesiginali ngokudibanisa i-femtosecond laser yokubhala kunye nekristale yolwelo.ukumodareyitha kwe-electro-optic. Ngokufakela umaleko wekristale yolwelo kwi-waveguide, ulawulo lwe-electro-optical ye-beam polarization state luyenzeka. Itekhnoloji ivula amathuba amatsha ngokupheleleyo kwizixhobo ezisekelwe kwitshiphu kunye neesekethe ezintsonkothileyo zefotonic ezenziwe kusetyenziswa itekhnoloji yokubhala ye-laser femtosecond. Iqela lophando lichaze indlela abazenza ngayo iipleyiti zamaza ezinokutya kwi-silicon waveguides. Xa i-voltage isetyenziselwa i-crystal ye-liquid, i-molecule ye-crystal ye-liquid iyajikeleza, etshintsha imeko ye-polarization yokukhanya okuhanjiswe kwi-waveguide. Kuvavanyo olwenziweyo, abaphandi bahlengahlengisa ngempumelelo i-polarization yokukhanya kumanqanaba amabini ahlukeneyo abonakalayo (Umfanekiso 1).

Ukudibanisa iitekhnoloji ezimbini eziphambili ukuphumeza inkqubela phambili entsha kwi-3D yezixhobo ezihlanganisiweyo zefotonic
Ukukwazi kwee-laser ze-femtosecond ukubhala ngokuchanekileyo ii-waveguides nzulu ngaphakathi kwemathiriyeli, kunokuba nje kumphezulu, kubenza babe yitekhnoloji ethembisayo yokwandisa inani lee-waveguides kwi-chip enye. Itekhnoloji isebenza ngokujolisa umqadi we-laser ophezulu kakhulu ngaphakathi kwezinto ezibonakalayo. Xa ukukhanya kokukhanya kufikelela kwinqanaba elithile, i-beam iguqula iipropati zezinto eziphathekayo kwindawo yayo yokusetyenziswa, njengepeni ene-micron ngokuchanekileyo.
Iqela lophando lidibanise iindlela ezimbini ezisisiseko zefoton ukuze kufakwe umaleko wekristale zamanzi kwi-waveguide. Njengoko umqadi uhamba nge-waveguide kunye ne-crystal ye-liquid, isigaba kunye ne-polarization ye-beam itshintsha emva kokuba intsimi yombane isetyenziswe. Emva koko, i-beam modulated iya kuqhubeka isasaza inxalenye yesibini ye-waveguide, ngaloo ndlela iphumelele ukuhanjiswa kwesignali ye-optical kunye neempawu zokumodareyitha. Le teknoloji ye-hybride edibanisa itekhnoloji ezimbini yenza ukuba izibonelelo zombini kwisixhobo esifanayo: kwelinye icala, ukuxinana okuphezulu koxinzelelo lokukhanya okuziswa yimpembelelo ye-waveguide, kwaye kwelinye icala, ukulungiswa okuphezulu kwekristale yolwelo. Olu phando luvula iindlela ezintsha zokusebenzisa iipropathi zeekristale zolwelo ukubethelela amaza amaza kumthamo opheleleyo wezixhobo njengokoiimodyulingenxaizixhobo zefoto.

Umzobo 1 Abaphandi bafakela i-crystal layers kwi-waveguides eyenziwe ngokubhala ngokuthe ngqo kwe-laser, kwaye isixhobo esibangelwa yi-hybrid singasetyenziselwa ukutshintsha i-polarization yokukhanya okudlula kwii-waveguides.

Ukusetyenziswa kunye neenzuzo zekristale yolwelo kwi-femtosecond laser waveguide modulation
Nangonaukumodareyitha kwamehlokwi-femtosecond i-laser yokubhala i-waveguides yayiphunyeziwe ngaphambili ngokuyinhloko ngokusebenzisa ukufudumeza kwendawo kwii-waveguides, kolu cwaningo, i-polarization yayilawulwa ngokuthe ngqo ngokusebenzisa iikristale zamanzi. "Indlela yethu ineengenelo ezininzi ezinokubakho: ukusetyenziswa kwamandla aphantsi, ukukwazi ukujongana namaza amaza ngokuzimeleyo, kunye nokunciphisa ukuphazamiseka phakathi kwamaza amaza akufutshane," abaphandi bathi. Ukuvavanya ukusebenza kwesixhobo, iqela lafaka i-laser kwi-waveguide kwaye lahlengahlengisa ukukhanya ngokutshintsha amandla ombane asetyenziswe kumaleko wekristale yolwelo. Utshintsho lwepolarization olujongwe kwisiphumo luhambelana nolindelo lwethiyori. Abaphandi baye bafumanisa ukuba emva kokuba i-crystal ye-liquid idibaniswe kunye ne-waveguide, iimpawu zokumodareyitha ze-crystal yamanzi zahlala zingatshintshi. Abaphandi bagxininisa ukuba uphononongo lububungqina bengcamango, ngoko ke kusekho umsebenzi omninzi ekufuneka wenziwe ngaphambi kokuba iteknoloji isetyenziswe ekusebenzeni. Ngokomzekelo, izixhobo zangoku zimodareyitha zonke ii-waveguides ngendlela efanayo, ngoko ke iqela lisebenzela ukufezekisa ulawulo oluzimeleyo lwe-waveguide nganye.