Iifoto ze-siliconamalungu okwenziwa
Kukho izinto ezininzi eziphambili zokungenzi nto kwi-silicon photonics. Enye yezi yi-coupler ekhupha umphezulu, njengoko kubonisiwe kuMfanekiso 1A. Iqulathe igrayiti eyomeleleyo kwisikhokelo samaza esixesha laso liphantse lilingane nobude belanga lokukhanya kwi-waveguide. 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