Basa refirimu rakatetepa re lithium niobate mu electro-optic modulator

Basa refirimu rakatetepa re lithium niobate mumodulator yemagetsi-optic
Kubva pakutanga kweindasitiri kusvika pari zvino, kugona kwekutaurirana nefiber imwe chete kwakawedzera nemamiriyoni akawanda, uye nhamba shoma yekutsvagisa kwepamberi yakadarika makumi emamiriyoni akawanda. Lithium niobate yakaita basa guru pakati peindasitiri yedu. Mumazuva ekutanga ekutaurirana nefiber ye optical, modulation yechiratidzo che optical yaigadziriswa zvakananga palaser. Iyi nzira yekushandura inogamuchirwa mukushandiswa kwebandwidth yakaderera kana mashandisirwo edaro diki. Kune mashandisirwo ekushandura nekukurumidza uye mashandisirwo edaro refu, pachava nebandwidth yakakwana uye nzira yekutumira inodhura zvakanyanya kuti isangane nemashandisirwo edaro refu.
Pakati pekutaurirana kwe optical fiber, modulation yesignal inokurumidza uye inokurumidza kusangana nekuwedzera kwesimba rekutaurirana, uye optical signal modulation mode inotanga kupatsanurwa, uye modulation modes dzakasiyana dzinoshandiswa mu networking yepfupi uye networking yedaro refu. Direct modulation inodhura zvishoma inoshandiswa mu networking yedaro pfupi, uye "electro-optic modulator" yakasiyana inoshandiswa mu networking yedaro refu, iyo yakaparadzaniswa nelaser.
Electro-optic modulator inoshandisa chimiro cheMachzender interference kuti igadzirise chiratidzo, chiedza chinoenderana nemagetsi, electromagnetic wave stable interference inoda stable control frequency, phase uye polarization. Tinowanzo taura nezveshoko, rinonzi interference fringes, light and dark fringes, bright ndiyo nzvimbo iyo electromagnetic interference inowedzerwa, dark ndiyo nzvimbo iyo electromagnetic interference inokonzera simba kushaya simba. Mahzender interference rudzi rwe interferometer ine chimiro chakakosha, inova interference effect inodzorwa nekudzora phase yedanda rimwe chete mushure mekupatsanura danda. Nemamwe mashoko, interference result inogona kudzorwa nekudzora interference phase.
Lithium niobate chinhu ichi chinoshandiswa mukutaurirana kwe optical fiber, kureva kuti, chinogona kushandisa voltage level (electrical signal) kudzora phase yechiedza, kuti chibudirire pakuchinja kwechiratidzo chechiedza, chinova hukama huripo pakati pe electro-optical modulator ne lithium niobate. Modulator yedu inonzi electro-optic modulator, iyo inofanirwa kufunga nezvese kusimba kwechiratidzo chemagetsi uye kunaka kwekuchinja kwechiratidzo che optical. Kugona kwechiratidzo chemagetsi che indium phosphide ne silicon photonics kuri nani pane kwe lithium niobate, uye kugona kwechiratidzo che optical hakuna kusimba asi kunogonawo kushandiswa, izvo zvinogadzira nzira itsva yekushandisa mukana wemusika.
Kuwedzera pahunhu hwavo hwakanaka hwemagetsi, indium phosphide nesilicon photonics zvine zvakanakira zve miniaturization uye integration izvo lithium niobate isina. Indium phosphide idiki pane lithium niobate uye ine integration degree yakakwira, uye silicon photons idiki pane indium phosphide uye ine integration degree yakakwira. Musoro we lithium niobate semodulatoryakareba kaviri pane indium phosphide, uye inogona kungova modulator chete uye haigone kubatanidza mamwe mabasa.
Parizvino, electro-optical modulator yapinda munguva ye100 bhiriyoni symbol rate, (128G i128 bhiriyoni), uye lithium niobate yatangazve hondo yekupinda mumakwikwi, uye inotarisira kutungamira nguva ino munguva pfupi iri kutevera, ichitungamira mukupinda mumusika we250 bhiriyoni symbol rate. Kuti lithium niobate itorezve musika uyu, zvakakosha kuongorora kuti indium phosphide nesilicon photons zvine chii, asi lithium niobate haina. Ndiko kugona kwemagetsi, kubatanidzwa kwakanyanya, miniaturization.
Kuchinja kwe lithium niobate kuri mumakona matatu, Angle yekutanga ndeyekuvandudza kugona kwemagetsi, Angle yechipiri ndeyekuvandudza kubatanidzwa, uye Angle yechitatu ndeyekuita kuti ive diki. Mhinduro yemakona matatu aya ehunyanzvi inoda chiito chimwe chete, ndiko kuti, kutetepa firimu re lithium niobate, kubvisa layer yakatetepa kwazvo ye lithium niobate se optical waveguide, unogona kugadzira patsva electrode, kuvandudza kugona kwemagetsi, kuvandudza bandwidth uye modulation efficiency yesignali yemagetsi. Kuvandudza kugona kwemagetsi. Iyi firimu inogona zvakare kubatanidzwa ku silicon wafer, kuti uwane mixed integration, lithium niobate se modulator, zvimwe zvese zve silicon photon integration, silicon photon miniaturization ability zviri pachena kune wese munhu, lithium niobate film uye silicon light mixed integration, kuvandudza kubatanidzwa, naturally achieved miniaturization.
Munguva pfupi iri kutevera, electro-optical modulator yava kuda kupinda munguva ye200 bhiriyoni symbol rate, disadvantage ye indium phosphide ne silicon photons iri kuramba ichinyatsojeka, uye feature ye lithium niobate iri kuramba ichionekwa, uye lithium niobate thin film inovandudza disadvantage yechinhu ichi se modulator, uye indasitiri inotarisa pane iyi "thin film lithium niobate", kureva, thin film.modulator ye lithium niobateIri ndiro basa re thin film lithium niobate mumunda we electro-optical modulators.