Chimwe chezvinhu zvinonyanya kukosha zveoptical modulator ndeyekumhanyisa kumhanya kana bandwidth, iyo inofanirwa kunge inokurumidza kukurumidza semagetsi aripo.MaTransistors ane mafambiro ekufambisa ari pamusoro pe100 GHz akatoratidzwa mu90 nm silicon tekinoroji, uye kumhanya kuchawedzera kuwedzera sezvo hushoma hwesaizi hwadzikiswa [1].Nekudaro, iyo bandwidth yemazuva ano-silicon-based modulators ishoma.Silicon haina χ(2) -isina mutsara nekuda kweiyo centro-symmetric crystalline chimiro.Kushandiswa kwesilicon yakadzvinyirirwa kwakatungamira kune zvinofadza zvabuda kare [2], asi izvo zvisiri mutsara hazvisati zvabvumidza zvishandiso zvinoshanda.State-of-the art silicon photonic modulators saka vachiri kuvimba nemahara-mutakuri kupararira mupn kana pini majekiseni [3-5].Forward biased junctions dzakaratidzwa kuratidza chigadzirwa chevoltage-refu chakaderera seVπL = 0.36 V mm, asi kumhanya kwemodulation kunoganhurwa nemasimba evatakuri vashoma.Zvakadaro, data data ye10 Gbit / s yakagadzirwa nerubatsiro rwekutanga kusimbiswa kwechiratidzo chemagetsi [4].Uchishandisa reverse biased junctions pachinzvimbo, bandwidth yakawedzera kusvika ku30 GHz [5,6], asi iyo voltagelength chigadzirwa chakasimuka kuenda kuVπL = 40 V mm.Nehurombo, yakadai seplasma effect phase modulators inogadzira isingadiwe intensity modulation zvakare [7], uye vanopindura zvisina tsarukano kune yakashandiswa voltage.Yepamberi modulation mafomati seQAM inoda, zvisinei, mutsara mhinduro uye yakachena chikamu modulation, zvichiita kushandiswa kweiyo electro-optic mhedzisiro (Pockels effect [8]) kunyanya kudiwa.
2. SOH kusvika
Munguva pfupi yapfuura, nzira yesilicon-organic hybrid (SOH) yakakurudzirwa [9-12].Muenzaniso weSOH modulator inoratidzwa muFig. 1 (a).Iyo ine slot waveguide inotungamira iyo yekuona munda, uye maviri silicon mitsetse inobatanidza nemagetsi iyo optical waveguide kune esimbi magetsi.Ma electrode ari kunze kwe optical modal field kuti arege kurasikirwa nemaziso [13], Fig. 1 (b).Chigadzirwa chacho chakaputirwa ne electro-optic organic material iyo inozadza zvakafanana slot.Iyo modulating voltage inotakurwa nesimbi yemagetsi waveguide uye inodonha kubva kune iyo slot nekuda kweiyo conductive silicon mitsetse.Munda wemagetsi unobva wachinja indekisi yerefraction mu slot kuburikidza neiyo Ultra-fast electro-optic effect.Sezvo slot ine hupamhi mukurongeka kwe100 nm, mashoma mavolts anokwana kugadzira akasimba kwazvo modulating minda ari muhurongwa hwehukuru hwesimba re dielectric rezvinhu zvakawanda.Iyo dhizaini ine yakakwirira modulation inobudirira sezvo ese ari maviri emodulating uye optical minda akaiswa mukati meiyo slot, Fig. 1 (b) [14].Zvechokwadi, kutanga kushandiswa kweSOH modulators ne-sub-volt operation [11] yakatoratidzwa, uye sinusoidal modulation kusvika ku40 GHz yakaratidzwa [15,16].Nekudaro, dambudziko mukuvaka yakaderera-voltage yakakwira-kumhanya SOH modulators kugadzira yakanyanya conductive yekubatanidza tambo.Muchikamu chakaenzana slot inogona kumiririrwa ne capacitor C uye conductive strips ne resistors R, Fig. 1 (b).Iyo inoenderana neRC nguva inogara inosarudza bandwidth yechigadzirwa [10,14,17,18].Kuti uderedze kushorwa R, zvakakurudzirwa kuti dope iyo silicon mitsetse [10,14].Nepo doping inowedzera conductivity yesilicon strips (uye naizvozvo inowedzera kurasikirwa kwemaziso), mumwe anobhadhara imwezve kurasikirwa chirango nokuti kufamba kwe electron kunokanganiswa nekusachena kupararira [10,14,19].Uyezve, kuedza kwekupedzisira kwekugadzira kwakaratidza zvisingatarisirwi pasi conductivity.
Beijing Rofea Optoelectronics Co., Ltd. iri muChina "Silicon Valley" - Beijing Zhongguancun, ibhizimusi repamusoro-soro rakatsaurirwa kushandira masangano ekutsvagisa epamba nekunze, masangano ekutsvagisa, mayunivhesiti uye bhizinesi vashandi vezvesainzi.Kambani yedu inonyanya kuita mukutsvagisa yakazvimirira uye kusimudzira, dhizaini, kugadzira, kutengesa kwezvigadzirwa zveoptoelectronic, uye inopa mhinduro nyowani uye nehunyanzvi, masevhisi emunhu evaongorori vesainzi uye mainjiniya emaindasitiri.Mushure memakore ekuzvimiririra innovation, yakagadzira akapfuma uye akakwana akatevedzana ezvigadzirwa zvemafotoelectric, ayo anoshandiswa zvakanyanya mumaspala, mauto, zvekufambisa, simba remagetsi, mari, dzidzo, zvekurapa uye mamwe maindasitiri.
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Nguva yekutumira: Mar-29-2023