ʻO kekahi o nā waiwai koʻikoʻi o ka modulator optical ʻo ia kona wikiwiki modulation a i ʻole bandwidth, ʻo ia ka liʻiliʻi e like me ka wikiwiki e like me ka uila i loaʻa.ʻO nā transistors me nā alapine transit ma mua o 100 GHz ua hōʻike mua ʻia i ka ʻenehana silika 90 nm, a e piʻi hou ka wikiwiki e like me ka emi ʻana o ka liʻiliʻi o ka hiʻohiʻona [1].Eia nō naʻe, ua kaupalena ʻia ka bandwidth o nā modulators i hoʻokumu ʻia i kēia lā.ʻAʻole loaʻa iā Silicon kahi χ(2) -nonlinearity ma muli o kona ʻano crystalline centro-symmetric.ʻO ka hoʻohana ʻana i ka silikoni kānana ua alakaʻi i nā hopena hoihoi [2], akā ʻaʻole ʻae nā nonlinearities i nā mea hana pono.No laila ke hilinaʻi nei nā modulators photonic silicon kiʻekiʻe loa i ka hoʻopuehu manuahi ʻana ma nā hui pn a i ʻole pin [3-5].Ua hōʻike ʻia nā hui hoʻohālikelike i mua e hōʻike i kahi huahana volta-lōʻihi e like me ka haʻahaʻa e like me VπL = 0.36 V mm, akā ua kaupalena ʻia ka wikiwiki modulation e ka dynamics o nā mea lawe liʻiliʻi.Eia nō naʻe, ua hana ʻia nā helu ʻikepili o 10 Gbit/s me ke kōkua o kahi pre-emphasized o ka hōʻailona uila [4].Me ka hoʻohana ʻana i nā hui hoʻohuli ʻē aʻe, ua hoʻonui ʻia ka bandwidth ma kahi o 30 GHz [5,6], akā ua piʻi ka huahana lōʻihi i VπL = 40 V mm.ʻO ka mea pōʻino, ʻo ia ʻano modulators hopena plasma e hoʻopuka i ka modulation ikaika ʻole [7], a pane lākou me ka laina ʻole i ka volta i noi ʻia.Pono nā ʻōnaehana modulation kiʻekiʻe e like me QAM, akā naʻe, he pane laina a me ka modulation phase maʻemaʻe, e makemake nui ai ka hoʻohana ʻana i ka hopena electro-optic (Pockels effect [8]).
2. SOH hoʻokokoke
I kēia mau lā, ua manaʻo ʻia ke ala silicon-organic hybrid (SOH) [9-12].Hōʻike ʻia kahi laʻana o kahi modulator SOH ma Fig. 1 (a).Loaʻa iā ia kahi alakaʻi hawewe slot e alakaʻi ana i ke kahua optical, a me ʻelua mau ʻāpana silika e hoʻopili uila i ka alakaʻi nalu optical i nā electrodes metala.Aia nā electrodes ma waho o ke kahua modal optical e pale aku i nā poho opua [13], Fig. 1 (b).Hoʻopili ʻia ka hāmeʻa me kahi mea kūlohelohe electro-optic e hoʻopiha like i ka slot.Lawe ʻia ka voltage modulating e ke alakaʻi nalu uila metala a hāʻule i lalo i ka slot mahalo i nā ʻāpana silikona conductive.A laila hoʻololi ke kahua uila i ka index of refraction i ka slot ma o ka hopena electro-optic ultra-wikiwiki.Ma muli o ka laulā o ka slot ma ke kauoha o 100 nm, ua lawa kekahi mau volts no ka hoʻoulu ʻana i nā māla modulating ikaika loa e like me ka nui o ka ikaika dielectric o ka hapa nui o nā mea.He kiʻekiʻe ka hoʻololi ʻana o ka hoʻolālā ʻana no ka mea ʻo ka modulating a me nā māla optical i loko o ka slot, Fig. 1 (b) [14].ʻOiaʻiʻo, ua hōʻike mua ʻia nā hoʻokō mua o SOH modulators me ka hana sub-volt [11], a ua hōʻike ʻia ka modulation sinusoidal a hiki i 40 GHz [15,16].Eia nō naʻe, ʻo ka paʻakikī i ke kūkulu ʻana i nā modulators SOH kiʻekiʻe-voltage kiʻekiʻe ka hana ʻana i kahi kaula hoʻopili conductive.I loko o kahi kaapuni like hiki ke hōʻike ʻia ka slot e ka capacitor C a me nā ʻāpana conductive e nā mea pale R, Fig. 1(b).ʻO ka manawa RC kūpono e hoʻoholo ai i ka bandwidth o ka mea hana [10,14,17,18].I mea e emi ai ke kū'ē R, ua ʻōlelo ʻia e dope i nā ʻāpana silicon [10,14].ʻOiai e hoʻonui ana ka doping i ka conductivity o nā ʻāpana silika (a no laila e hoʻonui ai i nā poho optical), uku kekahi i ka hoʻopaʻi pohō hou no ka mea ua hoʻopilikia ʻia ka neʻe electron e ka hoʻopuehu haumia [10,14,19].Eia kekahi, ua hōʻike ʻia nā hoʻāʻo hana hou loa i ka conductivity haʻahaʻa haʻahaʻa.
ʻO Beijing Rofea Optoelectronics Co., Ltd. aia ma Kina "Silicon Valley" - Beijing Zhongguancun, he ʻoihana ʻenehana kiʻekiʻe i hoʻolaʻa ʻia no ka lawelawe ʻana i nā keʻena noiʻi kūloko a me nā ʻāina ʻē, nā keʻena noiʻi, nā kulanui a me nā limahana noiʻi ʻepekema ʻoihana.Ke hana nui nei kā mākou hui i ka noiʻi kūʻokoʻa a me ka hoʻomohala ʻana, ka hoʻolālā, ka hana ʻana, ke kūʻai aku ʻana i nā huahana optoelectronic, a hāʻawi i nā hoʻonā hou a me nā ʻoihana, nā lawelawe pilikino no nā mea noiʻi ʻepekema a me nā ʻenekini ʻenehana.Ma hope o nā makahiki o ke kūʻokoʻa kūʻokoʻa, ua hoʻokumu ʻo ia i kahi ʻano waiwai a maikaʻi loa o nā huahana photoelectric, i hoʻohana nui ʻia i ke kūlanakauhale, ka pūʻali koa, ka lawe ʻana, ka mana uila, kālā, hoʻonaʻauao, olakino a me nā ʻoihana ʻē aʻe.
Ke kakali nei mākou i ka launa pū ʻana me ʻoe!
Ka manawa hoʻouna: Mar-29-2023