Silicon photonicspassive components
Kune akati wandei akakosha passive zvikamu musilicon photonics. Imwe yeiyi ndeyepamusoro-emitting grating coupler, sezvinoratidzwa mumufananidzo 1A. Inoumbwa negetsi yakasimba mugwara remasaisai iro nguva yaro inenge yakaenzana nehurefu hwemasaisai emwenje mugwara remasaisai. Izvi zvinobvumira kuti mwenje ubudiswe kana kugashirwa perpendicular kumusoro, zvichiita kuti ive yakanaka kune wafer-level zviyero uye / kana kubatanidza kune fiber. Grating couplers yakati siyanei nesilicon photonics mukuti inoda yakakwira vertical index musiyano. Semuyenzaniso, kana iwe ukayedza kugadzira gireti coupler mune yakajairwa InP waveguide, mwenje unonyuza wakananga musubstrate pachinzvimbo chekuburitswa wakamira nekuti iyo grating waveguide ine yakaderera avhareji refractive index pane substrate. Kuti iite kuti ishande muInP, zvinhu zvinofanirwa kucherwa pasi pegireti kuti zvimise, sezvinoratidzwa mumufananidzo 1B.
Mufananidzo 1: pamusoro-emitting one-dimensional grating couplers musilicon (A) uye InP (B). Mu (A), grey uye chiedza chebhuruu chinomiririra silicon uye silica, zvichiteerana. Mu (B), tsvuku neorenji zvinomiririra InGaAsP uye InP, zvichiteerana. Nhamba (C) uye (D) inotarisa maelectronic microscope (SEM) mifananidzo yeInP yakamiswa cantilever grating coupler.
Chimwe chinhu chakakosha inzvimbo-saizi inoshandura (SSC) pakati peOptical waveguideuye iyo fiber, iyo inoshandura nzira ye 0.5 × 1 μm2 musilicon waveguide kune imwe nzira ye10 × 10 μm2 mu fiber. Nzira yakajairika ndeyekushandisa chimiro chinodaidzwa kuti inverse taper, umo waveguide zvishoma nezvishoma Inonarrow kusvika padiki muromo, izvo zvinoguma nekuwedzera kukuru kweiyo.opticalmode chigamba. Iyi modhi inogona kutorwa neyakamiswa girazi waveguide, sezvakaratidzwa muMufananidzo 2. NeSSC yakadaro, kurasikirwa kwekubatanidza kwepasi pe1.5dB kunowanikwa nyore nyore.
Mufananidzo 2: Patani saizi inoshandura yesilicon waya waveguides. Iyo silicon zvinhu inoumba inverse conical chimiro mukati meyakamiswa girazi waveguide. Iyo silicon substrate yakavharirwa kure pasi peiyo yakamiswa girazi waveguide.
Chinhu chakakosha passive chikamu ndeye polarization beam splitter. Mimwe mienzaniso yepolarization splitters inoratidzwa muMufananidzo 3. Yokutanga iMach-Zender interferometer (MZI), apo ruoko rumwe norumwe rune birefringence yakasiyana. Yechipiri iri nyore kutungamira coupler. Chimiro chebirefringence yeyakajairwa silicon wire waveguide chakakwira zvakanyanya, saka transverse magineti (TM) polarized mwenje inogona kubatanidzwa zvizere, nepo transverse magetsi (TE) polarized mwenje anogona kunge asina kubatanidzwa. Yechitatu igairi rekubatanidza, umo iyo fiber inoiswa paAngle kuitira kuti TE polarized mwenje ibatanidzwe mune imwe nzira uye TM polarized mwenje inobatanidzwa mune imwe. Yechina ndeye maviri-dimensional grating coupler. Fiber modes ane minda yemagetsi perpendicular kune iyo nzira yekuparadzira waveguide inosanganiswa kune inoenderana waveguide. Iyo fiber inogona kutenderedzwa uye kubatanidzwa kune maviri waveguides, kana perpendicular kumusoro uye akabatanidzwa kune mana waveguides. Imwe mukana wakawedzerwa wemaviri-dimensional grating couplers ndeyekuti vanoita sepolarization rotators, zvichireva kuti chiedza chese chiri pachip chine polarization yakafanana, asi maviri orthogonal polarizations anoshandiswa mufiber.
Mufananidzo 3: Multiple polarization splitters.
Nguva yekutumira: Jul-16-2024