Litiyumu tantalate (LTOI) yihuta cyane ya moderi ya electro-optique

Litiyumu tantalate (LTOI) umuvuduko mwinshiamashanyarazi ya optique

Ihuriro ry’imibare ku isi rikomeje kwiyongera, bitewe n’ikwirakwizwa ry’ikoranabuhanga rishya nka 5G n’ubwenge bw’ubukorikori (AI), bitera imbogamizi zikomeye kuri transcevers mu nzego zose z’imiyoboro ya optique. By'umwihariko, igisekuru kizaza cya tekinoroji ya electro-optique isaba kwiyongera cyane mubipimo byo kohereza amakuru kuri 200 Gbps kumuyoboro umwe mugihe bigabanya gukoresha ingufu nibiciro. Mu myaka mike ishize, tekinoroji ya fotonike ya silicon yakoreshejwe cyane mumasoko ya optique ya transceiver, ahanini biterwa nuko fotonike ya silicon ishobora gukorwa cyane hakoreshejwe inzira ya CMOS ikuze. Nyamara, modulatrice ya SOI electro-optique yishingikiriza ku itwara ryabatwara ihura ningorabahizi zikomeye mugukoresha umurongo, gukoresha amashanyarazi, kwinjiza kubuntu kubuntu no guhindura moduline. Izindi nzira zikoranabuhanga mu nganda zirimo InP, firime yoroheje ya lithium niobate LNOI, polymers ya electro-optique, nibindi bisubizo byinshi byuburyo butandukanye. LNOI ifatwa nkigisubizo gishobora kugera ku bikorwa byiza mu muvuduko ukabije w’umuvuduko ukabije no guhindura amashanyarazi make, nyamara, kuri ubu ifite ibibazo bimwe na bimwe bijyanye n’umusaruro rusange n’ibiciro. Vuba aha, itsinda ryatangije firime yoroheje ya lithium tantalate (LTOI) ihuriweho na fotonike ifite ibikoresho byiza bya fotoelectric hamwe ninganda nini nini, biteganijwe ko izahuza cyangwa ikarenga imikorere ya lithium niobate na silicon optique ya porogaramu nyinshi. Ariko, kugeza ubu, igikoresho cyibanze cyaitumanaho ryiza, ultra-high yihuta ya electro-optique modulator, ntabwo yagenzuwe muri LTOI.

Muri ubu bushakashatsi, abashakashatsi babanje gutegura moderi ya LTOI electro-optique, imiterere yayo igaragara ku gishushanyo cya 1. Binyuze mu gishushanyo mbonera cya buri gice cya lithium tantalate kuri insulator hamwe n'ibipimo bya electrode ya microwave, ikwirakwizwa. umuvuduko uhuza microwave numucyo mwinshi muriamashanyarazi ya optiqueni. Mu rwego rwo kugabanya igihombo cya electrode ya microwave, abashakashatsi muri iki gikorwa ku nshuro yabo ya mbere basabye ko hakoreshwa ifeza nk'ibikoresho bya electrode bifite imiyoboro myiza, kandi electrode ya silver yerekanwe kugabanya igihombo cya microwave kugera kuri 82% ugereranije na ikoreshwa cyane rya zahabu electrode.

FIG. 1 LTOI electro-optique modulator imiterere, icyiciro cyo guhuza igishushanyo, microwave electrode igeragezwa.

FIG. 2 yerekana ibikoresho byubushakashatsi nibisubizo bya LTOI electro-optique modulator yaubukana bwahinduwegutahura neza (IMDD) muri sisitemu y'itumanaho ryiza. Ubushakashatsi bwerekana ko moderi ya LTOI electro-optique ishobora kohereza ibimenyetso bya PAM8 ku kimenyetso cya 176 GBd hamwe na BER yapimwe 3.8 × 10⁻² munsi ya 25% ya SD-FEC. Kuri 200 GBd PAM4 na 208 GBd PAM2, BER yari hasi cyane kurenza igipimo cya 15% SD-FEC na 7% HD-FEC. Ikizamini cyamaso hamwe na histogramu mubishushanyo 3 byerekana muburyo bwerekana ko moderi ya LTOI electro-optique ishobora gukoreshwa muri sisitemu yitumanaho ryihuse hamwe n'umurongo mwinshi hamwe nigipimo gito cyo kwibeshya.

FIG. 2 Ubushakashatsi ukoresheje LTOI electro-optique modulator yaUbukomezi bwahinduweKumenya neza (IMDD) muri sisitemu y'itumanaho rya optique (a) igikoresho cy'igerageza; (b) Ikigereranyo cyamakosa yapimwe (BER) ya PAM8 (umutuku), PAM4 (icyatsi) na PAM2 (ubururu) nkibikorwa byikimenyetso; . (d) Ikarita y'amaso hamwe na histogramu y'ibarurishamibare munsi ya PAM2, PAM4, PAM8.

Aka kazi karerekana moderi yambere yihuta ya LTOI electro-optique modulator hamwe na 3 dB yumurongo wa 110 GHz. Muburyo bukomeye bwo guhinduranya imenyekanisha ryerekanwa rya IMDD, igikoresho kigera kumurongo umwe wabatwara net net ya 405 Gbit / s, ibyo bikaba bigereranywa nibikorwa byiza byimikorere isanzwe ya electro-optique nka LNOI na modulator ya plasma. Mugihe kizaza, ukoresheje byinshi bigoyeIQ modulatoribishushanyo cyangwa byinshi byerekana ibimenyetso byo gukosora amakosa yo gukosora, cyangwa ukoresheje microwave yo gutakaza igihombo nka quartz substrates, ibikoresho bya lithium tantalate biteganijwe ko bizagera ku gipimo cyitumanaho cya 2 Tbit / s cyangwa irenga. Ufatanije ninyungu zihariye za LTOI, nka birefringence yo hasi hamwe ningaruka zingana bitewe nuko ikoreshwa henshi mu yandi masoko ya filteri ya RF, tekinoroji ya lithium tantalate Photonics izatanga ibiciro bidahenze, imbaraga nke na ultra-yihuta yihuse kubisekuruza bizaza hejuru -umuvuduko wihuse wa tumanaho na sisitemu ya microwave ya sisitemu.