Modulator ya electro-optic ifite imikorere myiza: modulator ya lithium niobate ifite icyuma gito

Modulator ya electro-optic ifite imikorere myiza cyane:modulator ya lithium niobate ifite firime nto

Modulator y'amashanyarazi n'amatara (Modulator ya EOM) ni modulator ikozwe hakoreshejwe ingaruka za electro-optical za kristu zimwe na zimwe za electro-optical, ishobora guhindura ibimenyetso by'ikoranabuhanga byihuta cyane mu bikoresho by'itumanaho mo ibimenyetso by'urumuri. Iyo kristu ya electro-optic ishyizwe ku butaka bw'amashanyarazi bukoreshwa, imiterere y'urumuri rwa kristu ya electro-optic izahinduka, kandi imiterere y'umuraba wa kristu nayo izahinduka uko bikwiye, kugira ngo hamenyekane uburyo ikimenyetso cy'urumuri gihinduka, imiterere yacyo n'imiterere yacyo, kandi hahindurwe ikimenyetso cy'ikoranabuhanga cyihuta cyane mu gikoresho cy'itumanaho mo ikimenyetso cy'urumuri binyuze mu guhinduranya.

Muri iki gihe, hari ubwoko butatu bw'ingenzi bwamodulators za electro-optiqueku isoko: modulators zishingiye kuri silicon, modulators za indium phosfide na thin filmmodulator ya lithiamu niobateMuri zo, silikoni ntabwo ifite coefficient ya electro-optical itaziguye, imikorere yayo ni rusange, ikwiriye gusa mu gukora module ya transceiver module modulator ya transceiver ya data intera ngufi, indium phosfide nubwo ikwiriye module ya transceiver ya network optical communication intera iri hagati, ariko ibisabwa mu guhuza ni byinshi cyane, igiciro ni kinini, ikoreshwa rigengwa n'imbogamizi zimwe na zimwe. Mu buryo bunyuranye, kristu ya lithiamu niobate ntabwo ikungahaye gusa ku ngaruka za fotoelectric, ingaruka za fotorefractive zishyirwaho, ingaruka zitari umurongo, ingaruka za electro-optical, ingaruka za acoustic optical, ingaruka za piezoelectric n'ingaruka za thermoelectric zingana na kimwe, kandi bitewe n'imiterere yayo ya lattice n'imiterere y'ubusembwa bwinshi, imiterere myinshi ya lithiamu niobate ishobora kugenzurwa cyane n'imiterere ya kristu, doping y'ibintu, kugenzura imiterere ya valence, nibindi. Igera ku musaruro mwiza wa fotoelectric, nko kuba electro-optical coefficient igera kuri 30.9pm/V, iri hejuru cyane kurusha indium phosfide, kandi ifite ingaruka nto ya chirp (ingaruka za chirp: yerekeza ku kintu cy'uko inshuro iri mu mvubura ihinduka uko igihe kigenda mu gihe cyo kohereza pulse ya laser. Ingaruka nini ya chirp ituma ikigereranyo cy'ibimenyetso-urusaku kiri hasi n'ingaruka zitari umurongo), ikigereranyo cyiza cyo kuzimira (ikigereranyo cy'imbaraga mpuzandengo cy'imiterere ya "kuri" y'ikimenyetso ku mimerere yacyo "yavuye"), hamwe no kudahungabana kw'ibikoresho. Byongeye kandi, uburyo imikorere ya modulator ya lithium niobate ya thin film itandukanye n'iya modulator ishingiye kuri silicon na indium phosphide ikoresha uburyo bwa nonlinear modulation, ikoresha linear electro-optical effect kugira ngo ishyire ikimenyetso gikoresha amashanyarazi kuri optique carrier, kandi umuvuduko wa modulation ugenwa ahanini n'imikorere ya electrode ya microwave, bityo umuvuduko wo hejuru wa modulation n'umurongo hamwe n'ikoreshwa rito ry'ingufu bishobora kugerwaho. Hashingiwe ku byavuzwe haruguru, lithium niobate yabaye amahitamo meza yo gutegura modulator za electro-optic zikora neza, zifite uburyo bwinshi bwo gukoresha mu miyoboro y'itumanaho ya 100G/400G ihuza neza n'amakuru yihuta cyane, kandi ishobora kugera ku ntera ndende yo kohereza amakuru ya kilometero zirenga 100.

Lithium niobate nk'ikintu gihindura imiterere y' "impinduramatwara ya fotoni", nubwo ugereranije na silicon na indium fosfide ifite ibyiza byinshi, ariko ikunze kugaragara mu buryo bw'ibikoresho byinshi biri muri icyo gikoresho, urumuri rugarukira ku murongo w'amazi ukorwa n'ikwirakwizwa rya iyoni cyangwa ihindagurika rya protoni, itandukaniro ry'igipimo cya refractive akenshi ni rito (hafi 0.02), ingano y'igikoresho ni nini cyane. Biragoye guhaza ibyifuzo byo gukora miniaturization no guhuzaibikoresho by'urumuri, kandi umurongo wayo wo gukora uracyatandukanye n'umurongo nyawo wo gukora ibikoresho bya microelectronics, kandi hari ikibazo cy'igiciro kinini, bityo gukora filime nto ni icyerekezo cy'ingenzi cyo guteza imbere litiyumu niobate ikoreshwa mu byuma bipima amashanyarazi.