Ọganihu nyocha nke ihe nkiri dị gịrịgịrị lithium niobate electro-optic modulator

Ọganihu nyocha nkeobere ihe nkiri lithium niobate electro-optic modulator

Electro-optic modulator bụ ngwaọrụ bụ isi nke sistemụ nkwurịta okwu anya na sistemụ fotonic microwave. Ọ na-ahazi ọkụ na-agbasa na oghere efu ma ọ bụ opikal waveguide site n'ịgbanwe ndetu ihe ngbanwe nke ihe ọkụ eletrik etinyere na-akpata. The omenala lithium niobateelectro-optical modulatorna-eji nnukwu lithium niobate ihe dị ka ihe elektrọ-optical. Otu ihe kristal lithium niobate na-edobe na mpaghara ka ọ na-etolite ntuziaka waveguide site na mgbasa titanium ma ọ bụ usoro mgbanwe proton. The refractive index iche n'etiti isi oyi akwa na cladding oyi akwa dị nnọọ obere, na waveguide nwere adịghị mma ejikọta ike na ìhè ubi. Ngụkọta ogologo nke ngwugwu electro-optic modulator na-abụkarị 5 ~ 10 cm.

Teknụzụ Lithium Niobate na Insulator (LNOI) na-enye ụzọ dị irè isi dozie nsogbu nke nnukwu nha nke lithium niobate electro-optic modulator. The refractive index ọdịiche dị n'etiti waveguide isi oyi akwa na cladding oyi akwa bụ ruo 0.7, nke ukwuu enhances ngwa anya mode ejikọta ikike na electro-optical ụkpụrụ mmetụta nke waveguide, na aghọwo a nnyocha hotspot na ubi nke electro-optical modulator.

N'ihi ọganihu nke nkà na ụzụ micro-machining, mmepe nke ndị na-emepụta ihe na-emepụta electro-optic nke dabeere na ikpo okwu LNOI enwewo ọganihu ngwa ngwa, na-egosi usoro nke mgbagwoju anya na ọganihu na-aga n'ihu nke arụmọrụ. Dị ka usoro waveguide ejiri mee ihe, ihe nkiri ahụ dị gịrịgịrị lithium niobate electro-optic modulators bụ ndị na-emegharị ebili mmiri elektrọn optic, ngwakọ juru.modulators waveguidena ngwakọ silicon agbakwunyere waveguide electro-optic modulators.

Ka ọ dị ugbu a, mmelite nke akọrọ etching usoro ukwuu ebelata ọnwụ nke mkpa film lithium niobate waveguide, riiji loading usoro na-edozi nsogbu nke elu etching usoro siri ike, na ghọtara na lithium niobate electro-optic modulator na voltaji nke ihe na-erughị 1 V ọkara ife, na Nchikota na tozuru okè SOI technology na-agbaso usoro nke photon na electron. Teknụzụ lithium niobate ihe nkiri dị mkpa nwere uru n'ịghọta mfu dị ala, obere nha na nnukwu bandwit agbakwunyere electro-optic modulator na mgbawa. N'usoro iwu, a na-ebu amụma na ihe nkiri 3mm dị mkpa lithium niobate push-pullM⁃Z modulator3dB electro-optical bandwit nwere ike iru ruo 400 GHz, na bandwit nke ihe nkiri akwadoro nnwale lithium niobate modulator ka akọọrọ na ọ bụ ihe karịrị 100 GHz, nke ka dị anya site na oke usoro iwu. Ọganihu a wetara site na-ebuli usoro ntọala ntọala nwere oke. N'ọdị n'ihu, site n'ịchọgharị usoro na usoro ọhụrụ, dị ka ịmepụta ọkọlọtọ coplanar waveguide electrode dị ka electrode microwave nke nwere akụkụ, enwere ike imeziwanye arụmọrụ nke modulator.

Na mgbakwunye, mmezu nke nkwakọ ngwaahịa modulator agbakwunyere na njikọta dị iche iche na lasers, ihe nchọpụta na ngwaọrụ ndị ọzọ bụ ma ohere na ihe ịma aka maka mmepe ọdịnihu nke ihe nkiri lithium niobate modulators dị mkpa. Ihe nkiri dị mkpa lithium niobate electro-optic modulator ga-arụ ọrụ dị mkpa karịa na foton microwave, nkwurịta okwu anya na mpaghara ndị ọzọ.