Kei te puta ake te rauemi angiangi-kiriata lithium tantalate (LTOI) hei kaha hou nui i roto i te mara o ngā whatu whakauru. I tēnei tau, he maha ngā mahi taumata-tiketike mō ngā modulators LTOI kua whakaputaina, me ngā wafers LTOI kounga teitei i whakaratohia e Ahorangi Xin Ou mai i te Shanghai Institute of Microsystem and Information Technology, me ngā tukanga whakairo waveguide kounga teitei i whakawhanakehia e te rōpū a Ahorangi Kippenberg i EPFL, Switzerland. Kua whakaatuhia e ā rātou mahi tahi ngā hua whakamiharo. Hei tāpiri, kua pūrongo hoki ngā rōpū rangahau mai i Te Whare Wānanga o Zhejiang i arahina e Ahorangi Liu Liu me Te Whare Wānanga o Harvard i arahina e Ahorangi Loncar mō ngā modulators LTOI tere-teitei, pumau-tiketike.
Hei whanaunga tata o te lithium niobate kiriata-angiangi (LNOI), ka mau tonu te LTOI i ngā āhuatanga whakarerekētanga tere-teitei me te iti-ngaronga o te lithium niobate, me te tuku atu hoki i ngā painga pēnei i te utu iti, te iti o te birefringence, me te whakaiti i ngā pānga photorefractive. Kei raro nei te whakataurite i ngā āhuatanga matua o ngā rauemi e rua.
◆ Ngā āhuatanga ōrite i waenga i te Lithium Tantalate (LTOI) me te Lithium Niobate (LNOI)
①Taupū Whakaata:2.12 vs 2.21
Ko te tikanga o tēnei he tino ōrite ngā inenga o te arataki ngaru aratau-kotahi, te pūtoro piko, me ngā rahi taputapu kore mahi noa i runga i ngā rauemi e rua, ā, he rite tonu hoki te mahi hononga muka. Mēnā he pai te whakairo arataki ngaru, ka taea e ngā rauemi e rua te whakatutuki i te ngaronga whakaurunga o<0.1 dB/cm. E whakaatu ana a EPFL i te ngaronga o te arataki ngaru o te 5.6 dB/m.
②Tauwehenga Hiko-whatu:30.5 pm/V vs 30.9 pm/V
He rite tonu te whai huatanga o te whakarerekētanga mō ngā rauemi e rua, me te whakarerekētanga i runga i te pānga Pockels, e āhei ai te whānui o te hononga. I tēnei wā, ka taea e ngā whakarerekētanga LTOI te whakatutuki i te mahi 400G mō ia ara, me te whānui o te hononga neke atu i te 110 GHz.
③Āputa roopu:3.93 eV ki te 3.78 eV
He whānui te matapihi mārama o ngā rauemi e rua, e tautoko ana i ngā tono mai i ngā roangaru e kitea ana ki ngā roangaru whero-whero, kāore he mimiti i roto i ngā roopu whakawhitiwhiti kōrero.
④Tauwehenga Kore-Raina Tuarua (d33):21 pm/V vs 27 pm/V
Mena ka whakamahia mō ngā tono kore-raina pērā i te whakatupuranga haurore tuarua (SHG), te whakatupuranga auau-rerekētanga (DFG), te whakatupuranga auau-tāpeke rānei (SFG), me tino ōrite te whai huatanga o te tahuritanga o ngā rauemi e rua.
◆ Painga Utu o LTOI vs LNOI
①Te Utu Whakarei Wafer iti iho
Me whakauru te katote He ki roto i te LNOI hei wehewehe i ngā paparanga, he iti nei te pai o te whakauru katote. He rerekē, ka whakamahia e te LTOI te whakauru katote H hei wehewehe, he rite ki te SOI, me te pai o te tango i ngā paparanga neke atu i te 10 ngā wā teitei ake i te LNOI. Ko te hua o tēnei he rerekētanga utu nui mō ngā paparanga 6-inihi: $300 vs. $2000, he whakahekenga utu 85%.
②Kua whakamahia whānuitia kētia i roto i te mākete hikohiko kaihoko mō ngā tātari oro.(750,000 ngā waeine ia tau, e whakamahia ana e Samsung, Apple, Sony, me ētahi atu).
◆ Ngā Painga Mahi o LTOI me LNOI
①He iti ake ngā hapa rauemi, he ngoikore ake te pānga whakaata-ataata, he pumau ake
I te tīmatanga, he maha ngā wā i whakaatuhia ai e ngā whakarerekētanga LNOI te nekenekehanga o ngā ira whakarara, ko te nuinga nā te kohikohinga utu i puta mai i ngā hapa i te atanga arataki ngaru. Ki te kore e rongoatia, ka roa pea te noho pumau o ēnei taputapu ki te kotahi rā. Heoi, i whakawhanakehia ngā tikanga maha hei whakatika i tēnei take, pērā i te whakamahi i te whakakikorua waikura whakarewa, te polarization o te papa, me te whakamahana, ā, kua taea ai te whakahaere i tēnei raruraru ināianei.
He rerekē, he iti ake ngā hapa o te rauemi o te LTOI, ā, ka tino heke te āhua o te nekenekehanga. Ahakoa kāore he tukatuka tāpiri, he pumau tonu tōna pūwāhi mahi. Kua pūrongohia ngā hua ōrite e te EPFL, Harvard, me te Whare Wānanga o Zhejiang. Heoi, he maha ngā wā ka whakamahia e te whakatairite ngā whakarerekētanga LNOI kāore i rongoatia, kāore pea i te tino tika; me te tukatuka, he rite tonu te mahi a ngā rauemi e rua. Ko te rerekētanga matua kei roto i te iti ake o ngā mahi tukatuka tāpiri e hiahiatia ana e te LTOI.
②Te iti o te Birefringence: 0.004 vs 0.07
He uaua pea te birefringence teitei o te lithium niobate (LNOI) i ētahi wā, inā koa ka taea e ngā piko o te arataki ngaru te hono i te aratau me te ranu aratau. I roto i te LNOI angiangi, ka taea e te piko o te arataki ngaru te huri i te mārama TE ki te mārama TM, ka uaua ai te hanga i ētahi taputapu kore mahi, pērā i ngā tātari.
Mā te LTOI, ka whakakorea tēnei raruraru e te iti o te birefringence, ā, ka māmā ake pea te whakawhanake i ngā taputapu kore mahi teitei. Kua pūrongohia hoki e te EPFL ngā hua whakamiharo, mā te whakamahi i te iti o te birefringence a te LTOI me te kore o te whakawhiti-aratau hei whakatutuki i te whakaputanga o te heru auau hiko-whatu whānui-rahi me te whakahaere marara papatahi puta noa i te whānuitanga whānui. Nā tēnei i hua ake ai he whānui o te heru 450 nm whakamiharo me te neke atu i te 2000 ngā raina heru, he maha ngā wā nui atu i te mea ka taea te whakatutuki me te lithium niobate. Ki te whakatauritea ki ngā heru auau whatu Kerr, ka tukuna e ngā heru hiko-whatu te painga o te kore-paepae me te pumau ake, ahakoa me whai urunga ngaruiti kaha-teitei.
③Te Paepae Kino Whatu Teitei Ake
Ko te paepae pakaru whatu o te LTOI e rua ngā wā i tērā o te LNOI, he painga tēnei mō ngā tono kore-raina (me ngā tono Coherent Perfect Absorption (CPO) pea ā muri ake nei). Kāore pea ngā taumata mana o te waeine whatu o nāianei e kino ki te lithium niobate.
④Pānga Raman Iti
E pā ana hoki tēnei ki ngā tono kore-raina. He kaha te pānga Raman o te lithium niobate, ā, i roto i ngā tono auau whatu Kerr ka taea e ia te arahi ki te whakaputa mārama Raman kāore e hiahiatia, me te whiwhi whakataetae, ka ārai i ngā auau whatu lithium niobate x-cut mai i te eke ki te āhua soliton. Mā te LTOI, ka taea te pehi i te pānga Raman mā te hoahoa whakatakotoranga tioata, ka taea ai e te x-cut LTOI te whakatutuki i te whakaputa auau whatu soliton. Mā tēnei ka taea te whakauru kotahi o ngā auau whatu soliton me ngā modulators tere-teitei, he mahi kāore e taea me te LNOI.
◆ He aha i kore ai i whakahuatia i mua te Rima Tantalate Rima Angiangi (LTOI)?
He iti ake te pāmahana Curie o te lithium tantalate i te lithium niobate (610°C vs. 1157°C). I mua i te whanaketanga o te hangarau heterointegration (XOI), i hangaia ngā modulators lithium niobate mā te whakamahi i te titanium diffusion, e hiahiatia ana te whakamahana i runga ake i te 1000°C, ā, kāore e pai mō te LTOI. Heoi, i te mea kua nekehia inaianei ki te whakamahi i ngā papa insulator me te whakairo waveguide mō te hanganga modulator, he nui atu i te rawaka te pāmahana Curie 610°C.
◆ Ka whakakapia rānei te Lithium Tantalate Kiriata-Angiangi (LTOI) e te Lithium Niobate Kiriata-Angiangi (TFLN)?
I runga i ngā rangahau o nāianei, he painga kei a LTOI mō te mahi kore mahi, te pumau, me te utu whakaputa nui, me te kore he ngoikoretanga e kitea ana. Heoi, kāore a LTOI e eke ki runga ake i te lithium niobate i roto i te mahi whakarerekētanga, ā, kua mōhiotia ngā otinga mō ngā take pumau me te LNOI. Mō ngā kōwae DR whakawhitiwhiti kōrero, he iti noa te hiahia mō ngā wāhanga kore mahi (ā, ka taea te whakamahi i te silicon nitride mēnā e tika ana). Hei tāpiri, me haumi hou ki te whakatū anō i ngā tukanga whakairo taumata-wafer, ngā tikanga heterointegration, me te whakamātautau pono (ko te uauatanga ki te whakairo lithium niobate ehara i te arataki ngaru engari ko te whakatutuki i te whakairo taumata-wafer hua-teitei). Nō reira, hei whakataetae ki te tūranga kua whakapumautia o te lithium niobate, me hura pea e LTOI ētahi atu painga. Heoi, i te taha mātauranga, he nui te kaha rangahau a LTOI mō ngā pūnaha whakauru-i-te-maramara, pērā i ngā heru hiko-whatu octave-spanning, PPLT, ngā taputapu wehewehe roangaru soliton me te AWG, me ngā modulators array.
Wā tuku: Whiringa-ā-rangi-08-2024