Lithium tantalate (LTOI) modulator electro optic dị elu

Lithium tantalate (LTOI) oke ọsọelectrooptic modulator

Okporo ụzọ data zuru ụwa ọnụ na-aga n'ihu na-eto, site na nnabata zuru ebe niile nke teknụzụ ọhụrụ dị ka 5G na ọgụgụ isi (AI), nke na-ebute nnukwu ihe ịma aka maka ndị transceivers na ọkwa niile nke netwọkụ anya. Kpọmkwem, ọgbọ na-esote teknụzụ electro-optic modulator chọrọ mmụba dị ukwuu na ọnụego mbufe data gaa na 200 Gbps n'otu ọwa ebe na-ebelata oriri ike na ọnụ ahịa. N'ime afọ ole na ole gara aga, ejirila teknụzụ photonics silicon n'ọtụtụ ebe n'ahịa transceiver anya, tumadi n'ihi eziokwu ahụ bụ na enwere ike imepụta silicon photonics site na iji usoro CMOS tozuru oke. Otú ọ dị, SOI electro-optic modulators nke na-adabere na mgbasa ozi ụgbọelu na-eche nnukwu ihe ịma aka na bandwit, oriri ike, nnabata ụgbọelu efu na modulation na-abụghị online. Ụzọ teknụzụ ndị ọzọ dị na ụlọ ọrụ ahụ gụnyere InP, ihe nkiri dị gịrịgịrị lithium niobate LNOI, polymers electro-optical, na ihe ngwọta ntinye ọtụtụ ihe dị iche iche. A na-ewere LNOI dị ka ihe ngwọta nke nwere ike nweta arụmọrụ kachasị mma na oke ọsọ ọsọ na ike dị ala, Otú ọ dị, ọ nwere nsogbu ụfọdụ ugbu a na usoro mmepụta ihe na ọnụ ahịa. N'oge na-adịbeghị anya, ndị otu ahụ wepụtara ihe nkiri dị gịrịgịrị lithium tantalate (LTOI) agbakwunyere fotonic nke nwere ezigbo fotoelectric Njirimara na nnukwu nrụpụta, nke a na-atụ anya na ọ ga-adaba ma ọ bụ karịa arụmọrụ nke lithium niobate na silicon optical platforms n'ọtụtụ ngwa. Otú ọ dị, ruo ugbu a, isi ngwaọrụ nkengwa anya nkwurịta okwu, ultra-high speed electro-optic modulator, ekwenyebeghị na LTOI.

N'ime ọmụmụ ihe a, ndị nchọpụta mbụ haziri LTOI electro-optic modulator, usoro nke e gosiri na Figure 1. Site imewe nke Ọdịdị nke ọ bụla oyi akwa nke lithium tantalate na insulator na parameters nke ngwa ndakwa nri electrode, propagation. ndakọrịta ọsọ nke ngwa ndakwa nri na ebili mmiri dị n'imeelectro-optical modulatorna-aghọta. N'ihe banyere ibelata mfu nke ngwa ndakwa nri, ndị na-eme nchọpụta na-arụ ọrụ a maka oge mbụ tụrụ aro iji ọlaọcha dị ka ihe electrode na-arụ ọrụ ka mma, na ọlaọcha electrode gosipụtara iji belata mfu microwave na 82% ma e jiri ya tụnyere electrode ọla edo ejiri ọtụtụ ebe.

FIG. 1 LTOI electro-optic modulator Ọdịdị, usoro dabara adaba, ule ọnwụ elektrọn microwave.

FIG. 2 na-egosi ngwa nnwale na nsonaazụ LTOI electro-optic modulator makaike mezirinchọpụta ozugbo (IMDD) na sistemụ nkwurịta okwu anya. Nnwale ndị a gosiri na LTOI electro-optic modulator nwere ike ibunye akara PAM8 n'ọnụego akara 176 GBd yana BER nke 3.8 × 10⁻² tụrụ n'okpuru 25% SD-FEC. Maka ma 200 GBd PAM4 na 208 GBd PAM2, BER dị obere ala karịa ọnụ ụzọ nke 15% SD-FEC na 7% HD-FEC. Anya na ihe nyocha histogram dị na eserese 3 na-egosi na anya na-egosi na enwere ike iji LTOI electro-optic modulator na usoro nkwurịta okwu dị elu nke nwere nnukwu linearity na obere mperi mperi.

FIG. Nnwale iji LTOI electro-optic modulator makaMgbanwe ikeNchọpụta Direct (IMDD) na sistemụ nkwurịta okwu anya (a) ngwaọrụ nnwale; (b) Ọnụ ọgụgụ njehie a tụrụ atụ (BER) nke PAM8 (red), PAM4 (green) na PAM2 (acha anụnụ anụnụ) dị ka ọrụ nke akara akara; (c) Ọnụego ozi enwere ike wepụta (AIR, ahịrị dashed) yana ọnụego netwọk jikọtara ya (NDR, ahịrị siri ike) maka nha nwere ụkpụrụ njehie bit n'okpuru oke 25% SD-FEC; (d) Maapụ anya na ihe ndekọ ndekọ aha n'okpuru PAM2, PAM4, PAM8 modulation.

Ọrụ a na-egosiputa modulator electro-optic nke mbụ LTOI dị elu na bandwit 3 dB nke 110 GHz. N'ime nchọpụta siri ike nke nyocha nnyefe IMDD ozugbo, ngwaọrụ ahụ na-enweta otu ọnụọgụ data netwọk nke 405 Gbit/s, nke tụnyere arụmọrụ kachasị mma nke nyiwe eletrọ-optical dị ugbu a dị ka LNOI na plasma modulators. N'ọdịnihu, na-eji mgbagwoju anyaIQ modulatoratụmatụ ma ọ bụ usoro mgbazi mgbama mgbama dị elu karịa, ma ọ bụ iji obere mfu ngwa ndakwa nri dị ka quartz substrates, ngwaọrụ lithium tantalate na-atụ anya nweta ọnụego nkwukọrịta nke 2 Tbit/s ma ọ bụ karịa. Ejikọtara ya na uru LTOI dị iche iche, dị ka obere birefringence na mmetụta nha n'ihi ngwa ya zuru ebe niile na ahịa nzacha RF ndị ọzọ, teknụzụ lithium tantalate photonics ga-enye ihe ngwọta dị ọnụ ala, obere ike na ultra-oke ọsọ maka ọgbọ ọzọ dị elu. - ngwa ngwa netwọk nkwurịta okwu na ngwa ngwa photonics usoro.