Iifoto ze-siliconamalungu okwenziwa
Kukho izinto ezininzi eziphambili zokungenzi nto kwi-silicon photonics. Enye yezi yi-coupler ekhupha umphezulu, njengoko kubonisiwe kuMfanekiso 1A. Iquka igrayiti eyomeleleyo kwisikhokelo samaza esixesha laso liphantse lilingane nobude bokukhanya kwamaza kwisikhokelo samaza. Oku kuvumela ukukhanya ukuba kukhutshwe okanye kufumaneke ngokuxhomekeke kumphezulu, okwenza kube yinto efanelekileyo kwimilinganiselo ye-wafer-level kunye / okanye ukudibanisa kwifiber. Ii-couplers zokugaya zahlukile ngandlel' ithile kwi-silicon photonics kuba zifuna umahluko omkhulu othe nkqo wesalathiso. Umzekelo, ukuba uzama ukwenza i-coupler yokugaya kwi-waveguide ye-InP eqhelekileyo, ukukhanya kuphumela ngqo kwi-substrate endaweni yokukhutshwa ngokuthe nkqo kuba i-waveguide yegrayidi ine-avareji esezantsi ye-refractive index kune-substrate. Ukwenza ukuba kusebenze kwi-InP, izinto eziphathekayo kufuneka zigqwetywe phantsi kwe-grating ukuyimisa, njengoko kuboniswe kuMfanekiso 1B.
Umzobo 1: i-face-emitting one-dimensional grating couplers kwi-silicon (A) kunye ne-InP (B). Kwi-(A), i-gray kunye ne-blue blue imele i-silicon kunye ne-silica, ngokulandelanayo. Ku (B), obomvu kunye ne-orenji bamele i-InGaAsP kunye ne-InP, ngokulandelanayo. Amanani (C) kunye no-(D) yimifanekiso ye-electronic microscope (SEM) yokuskena ye-InP exhonyiweyo yebrating coupler.
Elinye icandelo eliphambili yi-spot-size converter (SSC) phakathi kwei-optical waveguidekunye nefayibha, eguqula indlela emalunga ne-0.5 × 1 μm2 kwi-silicon waveguide kwimo emalunga ne-10 × 10 μm2 kwifiber. Indlela eqhelekileyo kukusebenzisa isakhiwo esibizwa ngokuba yi-inverse taper, apho i-waveguide iyancipha ukuya kwincam encinci, nto leyo ekhokelela ekwandiseni okubalulekileyoukubonaiphetshi yemowudi. Le modi inokubanjwa yi-glass waveguide emisiweyo, njengoko kuboniswe kuMfanekiso 2. Nge-SSC enjalo, ukulahlekelwa kokudibanisa okungaphantsi kwe-1.5dB kufumaneka ngokulula.
Umzobo 2: Isiguquli sobungakanani bepateni yee-silicon wire waveguides. Izinto zesilicon zenza ulwakhiwo olujiyileyo lweconical ngaphakathi kweglasi exhonyiweyo. I-silicon substrate ixhonywe phantsi kweglasi exhonyiweyo.
Inxalenye ephambili yokwenziwa yi-polarization beam splitter. Eminye imizekelo ye-polarization splitters iboniswe kuMfanekiso 3. Eyokuqala yi-interferometer ye-Mach-Zender (MZI), apho ingalo nganye ine-birefringence eyahlukileyo. Eyesibini i-coupler elula yolwalathiso. Ubume be-birefringence ye-silicon yocingo lwe-waveguide iphezulu kakhulu, ngoko ke ukukhanya okunqamlezileyo kwemagneti (TM) kunokudityaniswa ngokupheleleyo, ngelixa ukukhanya okunqamlezileyo kombane (TE) ukukhanya okumhlophe kunokuphantse kungadityaniswa. Eyesithathu i-coupler ye-grating, apho i-fiber ibekwe kwi-Angle ukuze ukukhanya kwe-TE kuhlanganiswe kwelinye icala kunye nokukhanya kwe-TM polarized kuhlanganiswe kwelinye. Eyesine yi-coupler yegrating ene-dimensional-dimensional. Iimowudi zeFayibha ezinemihlaba yombane ethe gqolo kwicala losasazo lwe-waveguide zidityaniswe ne-waveguide ehambelanayo. Ifiber inokuthambeka kwaye idityaniswe kwii-waveguides ezimbini, okanye i-perpendicular kumphezulu kwaye idityaniswe kumaza amaza amane. Inzuzo eyongeziweyo yee-couplers ze-grating ze-dimensional ezimbini kukuba zisebenza njenge-polarization rotators, oku kuthetha ukuba konke ukukhanya kwi-chip kune-polarization efanayo, kodwa ezimbini i-orthogonal polarizations zisetyenziswa kwifiber.
Umzobo 3: Iziqhekeza ezininzi ze-polarization.
Ixesha lokuposa: Jul-16-2024