Ukulawulwa kwe-electro-optic ye-polarization kwenziwa ngokubhala kwe-laser ye-femtosecond kanye nokuguqulwa kwekristalu eliwuketshezi

I-polarization ye-electro-opticUkulawula kwenziwa ngokubhala kwe-laser ye-femtosecond kanye nokuguqulwa kwekristalu ye-liquid

Abacwaningi baseJalimane benze indlela entsha yokulawula isignali yokubona ngokuhlanganisa ukubhala kwe-laser ye-femtosecond kanye nekristalu ewuketshezi.ukuguqulwa kwe-electro-optic. Ngokushumeka ungqimba lwekristalu eliwuketshezi ku-waveguide, ukulawulwa kwe-electro-optical yesimo se-beam polarization kuyenzeka. Ubuchwepheshe buvula amathuba amasha ngokuphelele wamadivayisi asekelwe ku-chip namasekhethi ezithombe eziyinkimbinkimbi ezenziwe kusetshenziswa ubuchwepheshe bokubhala be-laser be-femtosecond. Ithimba labacwaningi lichaze kabanzi ukuthi bawenza kanjani amapuleti amagagasi ashuthekayo kuma-waveguide e-silicon ahlanganisiwe. Lapho i-voltage isetshenziswa kukristalu ewuketshezi, ama-molecule ekristalu ewuketshezi azungeza, okushintsha isimo sokukhanya esidluliswa ku-waveguide. Ezivivinyweni ezenziwe, abacwaningi baphumelele ngokuphelele ukulungisa i-polarization yokukhanya kumaza amabili ahlukene abonakalayo (Umfanekiso 1).

Ukuhlanganisa ubuchwepheshe obubili obubalulekile ukuze kuzuzwe inqubekelaphambili emisha kumadivayisi ahlanganisiwe ezithombe ze-3D
Ikhono lama-laser e-femtosecond okubhala ngokunembile ama-waveguides ekujuleni kokuqukethwe, kunokuthi abe ngaphezulu nje, awenza abe ubuchwepheshe obuthembisayo bokukhulisa inani lamagagasi ku-chip eyodwa. Ubuchwepheshe busebenza ngokugxilisa i-laser enamandla kakhulu ngaphakathi kwento esobala. Lapho ukukhanya kokukhanya kufinyelela ezingeni elithile, i-beam ishintsha izakhiwo zempahla endaweni yayo yokusetshenziswa, njengepeni elinokunemba kwe-micron.
Ithimba locwaningo lihlanganise amasu amabili ayisisekelo e-photon ukuze ashumeke ungqimba lwamakristalu awuketshezi ku-waveguide. Njengoba i-beam ihamba nge-waveguide futhi ngokusebenzisa i-crystal ewuketshezi, isigaba kanye ne-polarization ye-beam kushintsha uma insimu kagesi isetshenziswa. Kamuva, i-beam eguquliwe izoqhubeka nokusabalala engxenyeni yesibili ye-waveguide, ngaleyo ndlela ifinyelele ukudluliswa kwesignali ye-optical enezici zokumodulation. Lobu buchwepheshe be-hybrid obuhlanganisa lobu buchwepheshe obubili buvumela izinzuzo zakho kokubili kudivayisi efanayo: ngakolunye uhlangothi, ukuminyana okuphezulu kokugxiliswa kokukhanya okulethwa umphumela we-waveguide, futhi ngakolunye uhlangothi, ukulungiswa okuphezulu kwekristalu ewuketshezi. Lolu cwaningo luvula izindlela ezintsha zokusebenzisa izakhiwo zamakristalu awuketshezi ukushumeka ama-waveguides kumthamo wonke wamadivayisi njengeama-modulatorsokweamadivaysi photonic.

Umfanekiso 1 Abacwaningi bashumeke izendlalelo zekristalu ewuketshezi kuma-waveguides adalwe ngokubhala okuqondile kwe-laser, futhi idivayisi ewumphumela ye-hybrid ingase isetshenziselwe ukuguqula i-polarization yokukhanya okudlula kuma-waveguides.

Ukusetshenziswa kanye nezinzuzo zekristalu ewuketshezi ku-femtosecond laser waveguide modulation
Nakubaukuguqulwa kwe-opticalkuma-waveguides wokubhala we-laser we-femtosecond ngaphambili afinyelelwa ngokuyinhloko ngokusebenzisa ukushisa kwendawo kumagagasi, kulolu cwaningo, i-polarization yayilawulwa ngokuqondile ngokusebenzisa amakristalu aketshezi. "Indlela yethu inezinzuzo ezimbalwa ezingaba khona: ukusetshenziswa kwamandla okuphansi, amandla okucubungula amagagasi ngamanye ngokuzimela, nokunciphisa ukuphazamiseka phakathi kwamagagasi aseduze," kuphawula abacwaningi. Ukuze kuhlolwe ukusebenza kwedivayisi, ithimba lifake i-laser ku-waveguide laphinde lalungisa ukukhanya ngokushintsha i-voltage esetshenziswa kusendlalelo sekristalu ewuketshezi. Izinguquko ze-polarization ezibonwe kokuphumayo zihambisana nokulindelwe kwethiyori. Abacwaningi baphinde bathola ukuthi ngemva kokuba i-crystal ewuketshezi ihlanganiswe ne-waveguide, izici zokuguquguquka kwe-crystal liquid zahlala zingashintshile. Abacwaningi bagcizelela ukuthi lolu cwaningo luwubufakazi bomqondo, ngakho-ke usemkhulu umsebenzi okufanele wenziwe ngaphambi kokuba ubuchwepheshe busetshenziswe ekusebenzeni. Isibonelo, amadivayisi amanje amodela wonke ama-waveguide ngendlela efanayo, ngakho-ke ithimba lisebenzela ukuzuza ukulawula okuzimele kwe-waveguide ngayinye.