Modulator ya Lithium tantalate (LTOI) yihuta cyane ya electro-optic

Umuvuduko wo hejuru wa Lithium tantalate (LTOI)modulator y'amashanyarazi n'amatara

Urujya n'uruza rw'amakuru ku isi rukomeje kwiyongera, bitewe no gukoresha ikoranabuhanga rishya nka 5G n'ubwenge bw'ubukorano (AI), bitera imbogamizi zikomeye ku batwara amakuru ku nzego zose z'imiyoboro y'amakuru. By'umwihariko, ikoranabuhanga rya modulator ya electro-optic yo mu gisekuru gitaha risaba kongera cyane igipimo cyo kohereza amakuru kugeza kuri 200 Gbps mu muyoboro umwe mu gihe bigabanya ikoreshwa ry'ingufu n'ikiguzi. Mu myaka mike ishize, ikoranabuhanga rya silicon photonics ryakoreshejwe cyane ku isoko rya transceiver ya optique, ahanini bitewe nuko silicon photonics ishobora gukorwa ku bwinshi hakoreshejwe uburyo bwa CMOS bwakuze. Ariko, modulator za SOI electro-optic zishingiye ku gukwirakwiza kwa carrier zihura n'imbogamizi zikomeye mu buryo bwa bandwidth, ikoreshwa ry'ingufu, gukoresha carrier y'ubuntu no kudahinduranya. Izindi nzira z'ikoranabuhanga muri uru rwego zirimo InP, thin film lithium niobate LNOI, polymers za electro-optical, n'izindi solutions nyinshi zitandukanye zo guhuza. LNOI ifatwa nk'igisubizo gishobora kugera ku musaruro mwiza mu muvuduko mwinshi cyane no mu mbaraga nke, ariko, ubu ifite imbogamizi zimwe na zimwe mu bijyanye no gukora ibintu byinshi n'ikiguzi. Vuba aha, itsinda ryatangije urubuga rwa filime nto ya lithium tantalate (LTOI) rufite imiterere myiza y’amashanyarazi hamwe n’inganda nini, byitezwe ko ruzahura cyangwa rurenze imikorere ya platifomu za lithium niobate na silicon optique mu bikorwa byinshi. Ariko, kugeza ubu, igikoresho cy’ingenzi cyaitumanaho ry'amaso, modulator ya electro-optic yihuta cyane, ntabwo yemejwe muri LTOI.

Muri ubu bushakashatsi, abashakashatsi babanje gushushanya modulator ya LTOI electro-optic, imiterere yayo igaragara ku Ishusho ya 1. Binyuze mu gishushanyo mbonera cy'imiterere ya buri cyiciro cya lithium tantalate ku gikoresho gikingira umuriro n'ibipimo bya electrode ya microwave, guhuza umuvuduko wo gukwirakwiza microwave n'umuraba w'urumuri murimodulator y'amashanyarazi n'amatarairagerwaho. Mu rwego rwo kugabanya igihombo cya electrode ya mikoroonde, abashakashatsi muri iki gikorwa ku nshuro ya mbere batanze igitekerezo cyo gukoresha feza nk'igikoresho cya electrode gifite ubushobozi bwo gutwara neza, kandi electrode ya feza byagaragaye ko igabanya igihombo cya mikoroonde kugeza kuri 82% ugereranije na electrode ya zahabu ikoreshwa cyane.

ISHUSHO YA 1 Imiterere ya modulator ya LTOI electro-optic, igishushanyo mbonera cyo guhuza icyiciro, ikizamini cyo gutakaza electrode ya microwave.

ISHUSHO YA 2 igaragaza igikoresho cy'igerageza n'ibyavuye mu muyoboro wa LTOI electro-optic modulator kuriimbaraga zahinduweGutahura mu buryo butaziguye (IMDD) muri sisitemu y'itumanaho ry'amajwi. Igerageza ryerekanye ko modulator ya LTOI electro-optic ishobora kohereza ibimenyetso bya PAM8 ku gipimo cya 176 GBd hamwe na BER yapimwe ya 3.8 × 10⁻² munsi ya 25% SD-FEC. Kuri PAM2 ya 200 GBd PAM4 na 208 GBd, BER yari iri hasi cyane ugereranyije na 15% SD-FEC na 7% HD-FEC. Ibisubizo by'ikizamini cy'amaso na histogram ku Ishusho ya 3 bigaragaza neza ko modulator ya LTOI electro-optic ishobora gukoreshwa muri sisitemu y'itumanaho yihuta cyane ifite umurongo wo hejuru n'igipimo gito cy'amakosa ya biti.

ISHUSHO YA 2 Igerageza rikoresha modulator ya LTOI electro-optic kuriIngufu zahinduweGupima mu buryo butaziguye (IMDD) muri sisitemu y'itumanaho ry'amajwi (a) igikoresho cy'igerageza; (b) Igipimo cy'ikosa rya biti (BER) rya PAM8 (umutuku), PAM4 (icyatsi kibisi) na PAM2 (ubururu) nk'uko bigaragazwa n'igipimo cy'ikimenyetso; (c) Igipimo cy'amakuru akoreshwa (AIR, umurongo ucagaguye) n'igipimo cy'amakuru ajyanye nayo (NDR, umurongo uhamye) ku bipimo bifite igipimo cy'ikosa rya biti kiri munsi y'umupaka wa 25% wa SD-FEC; (d) Amakarita y'amaso na histogram z'imibare hakurikijwe modulation ya PAM2, PAM4, PAM8.

Iyi mirimo igaragaza modulator ya mbere ya LTOI electro-optic yihuta cyane ifite bandwidth ya 3 dB ya 110 GHz. Mu igerageza ryo gupima imbaraga mu buryo butaziguye, iyi mashini igera ku gipimo kimwe cy'amakuru ya carrier net cya 405 Gbit/s, kingana n'imikorere myiza ya platforms za electro-optical zisanzweho nka LNOI na plasma modulator. Mu gihe kizaza, hakoreshejwe uburyo bugoye cyane.Umuhuza w'ubwenge (IQ modulator)Imiterere cyangwa uburyo bugezweho bwo gukosora amakosa y’ibimenyetso, cyangwa gukoresha ibikoresho byo mu bwoko bwa microwave bitakaza ingufu nke nka quartz, ibikoresho bya lithium tantalate byitezweho kugera ku gipimo cy’itumanaho cya 2 Tbit/s cyangwa kirenga. Hamwe n’ibyiza byihariye bya LTOI, nko kugabanuka kwa birefringence n’ingaruka mbi bitewe n’uko ikoreshwa cyane mu yandi masoko ya RF filter, ikoranabuhanga rya lithium tantalate rizatanga ibisubizo bihendutse, bifite ingufu nke kandi byihuta cyane ku miyoboro y’itumanaho ryihuse ry’ikoranabuhanga ryo mu bwoko bukurikira hamwe na sisitemu za microwave fotonics.