Kwiminyaka yakutshanje, abaphandi abavela kumazwe ahlukeneyo basebenzise ii-photonics ezihlanganisiweyo ukuze baqonde ngokulandelelana ukulawulwa kwamaza okukhanya kwe-infrared kwaye bawasebenzise kwiinethiwekhi ze-5G ezikhawulezayo, izinzwa ze-chip, kunye nezithuthi ezizimeleyo. Okwangoku, ngokuqhubeka nobunzulu bale ndlela yophando, abaphandi baqalise ukwenza ukufunyanwa okunzulu kweebhendi zokukhanya ezimfutshane ezibonakalayo kwaye baphuhlise usetyenziso olubanzi ngakumbi, njengeeglasi ze-chip-level LIDAR, i-AR/VR/MR (ephuculweyo/ebonakalayo/exutyiweyo) Reality), ii-holographic displays, ii-quantum processing chips, ii-optogenetic probes ezifakwe engqondweni, njl.
Ukuhlanganiswa okukhulu kwee-modulators zesigaba se-optical yeyona nto iphambili kwinkqubo engaphantsi kwe-optical ye-on-chip optical routing kunye ne-free-space wavefront shaping. Le misebenzi mibini iphambili ibalulekile ekufezekisweni kwezicelo ezahlukeneyo. Nangona kunjalo, kwii-modulators zesigaba se-optical kuluhlu lokukhanya olubonakalayo, kunzima kakhulu ukuhlangabezana neemfuno zokudlulisa okuphezulu kunye ne-modulation ephezulu ngaxeshanye. Ukuhlangabezana nale mfuneko, kwanezixhobo ze-silicon nitride kunye ne-lithium niobate ezifanelekileyo kufuneka zonyuse ivolumu kunye nokusetyenziswa kwamandla.
Ukusombulula le ngxaki, uMichal Lipson kunye noNanfang Yu beYunivesithi yaseColumbia bayila i-silicon nitride thermo-optic phase modulator esekelwe kwi-adiabatic micro-ring resonator. Babonakalise ukuba i-micro-ring resonator isebenza kwimeko eqinileyo yokudibanisa. Esi sixhobo sinokufikelela kwi-phase modulation ngokulahleka okuncinci. Xa kuthelekiswa nee-waveguide phase modulators eziqhelekileyo, esi sixhobo sinomlinganiselo wokunciphisa ubukhulu bendawo kunye nokusetyenziswa kwamandla. Umxholo ohambelanayo upapashwe kwi-Nature Photonics.
UMichal Lipson, ingcali ephambili kwicandelo le-photonics edibeneyo, esekelwe kwi-silicon nitride, uthe: “Isitshixo sesisombululo sethu esicetywayo kukusebenzisa i-optical resonator kwaye sisebenze kwimeko ebizwa ngokuba yi-strong coupling state.”
I-optical resonator sisakhiwo esilinganayo kakhulu, esinokuguqula utshintsho oluncinci lwe-refractive index lube lutshintsho lwesigaba ngokusebenzisa imijikelo emininzi yemitha yokukhanya. Ngokubanzi, inokwahlulwa ibe ziimeko ezintathu ezahlukeneyo zokusebenza: "phantsi kokudibanisa" kunye "naphantsi kokudibanisa." Ukudibanisa okubalulekileyo" kunye "nokudibanisa okunamandla." Phakathi kwazo, "phantsi kokudibanisa" kunokubonelela kuphela ngokuguqulwa kwesigaba okulinganiselweyo kwaye kuya kungenisa utshintsho olungeyomfuneko lwe-amplitude, kwaye "ukudibanisa okubalulekileyo" kuya kubangela ilahleko enkulu ye-optical, ngaloo ndlela ichaphazela ukusebenza kwesixhobo.
Ukuze kufezekiswe ukuguqulwa okupheleleyo kwesigaba se-2π kunye notshintsho oluncinci lwe-amplitude, iqela lophando lilawule i-microring kwimeko "yokudibanisa okunamandla". Amandla okudibanisa phakathi kwe-microring kunye "nebhasi" angaphezulu ngokuphindwe kalishumi kunokulahleka kwe-microring. Emva kochungechunge loyilo kunye nokwenza ngcono, isakhiwo sokugqibela siboniswe kumfanekiso ongezantsi. Le yindandatho evakalayo enobubanzi obunciphileyo. Inxalenye encinci ye-waveguide iphucula amandla okudibanisa okubonakalayo phakathi "kwebhasi" kunye ne-micro-coil. Inxalenye ye-waveguide ebanzi Ukulahleka kokukhanya kwe-microring kuncitshiswa ngokunciphisa ukusasazeka kwe-optical kodonga olusecaleni.
UHeqing Huang, umbhali wokuqala wephepha, uthe: “Siyile i-miniature, yokonga amandla, kunye ne-visual light-loss light modulator encinci kakhulu ene-radius ye-5 μm kuphela kunye nokusetyenziswa kwamandla e-π-phase modulation eyi-0.8 mW kuphela. Utshintsho lwe-amplitude olungenisiweyo lungaphantsi kwe-10%. Okungaqhelekanga kukuba le modulator isebenza ngokulinganayo kwiibhendi eziluhlaza okwesibhakabhaka neziluhlaza ezinzima kwi-spectrum ebonakalayo.”
UNanfang Yu ukwathe nangona bekude kakhulu nokufikelela kwinqanaba lokudibanisa iimveliso ze-elektroniki, umsebenzi wabo unciphise kakhulu umsantsa phakathi kweeswitshi ze-photonic kunye neeswitshi ze-elektroniki. "Ukuba itekhnoloji yangaphambili ye-modulator yayivumela kuphela ukuhlanganiswa kwee-modulators ze-waveguide phase eziyi-100 ngenxa ye-chip footprint ethile kunye nohlahlo lwabiwo-mali lwamandla, ngoko ngoku singadibanisa ii-phase shifters eziyi-10,000 kwi-chip efanayo ukuze sifezekise uMsebenzi onzima ngakumbi."
Ngamafutshane, le ndlela yoyilo ingasetyenziswa kwiimodulators ze-electro-optic ukunciphisa indawo ehlala abantu kunye nokusetyenziswa kwe-voltage. Ingasetyenziswa nakwezinye iindawo ze-spectral kunye nezinye iindlela ezahlukeneyo zoyilo lwe-resonator. Okwangoku, iqela lophando liyasebenzisana ukubonisa i-spectrum ebonakalayo ye-LIDAR eyenziwe zii-phase shifter arrays ezisekelwe kwii-microrings ezinjalo. Kwixesha elizayo, ingasetyenziswa nakwii-applications ezininzi ezifana ne-enhanced optical nonlinearity, ii-laser ezintsha, kunye ne-quantum optics ezintsha.
Umthombo wenqaku: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
I-Beijing Rofea Optoelectronics Co., Ltd. ekwi "Silicon Valley" yaseTshayina – iBeijing Zhongguancun, lishishini elinobuchwepheshe obuphezulu elizinikele ekukhonzeni amaziko ophando asekhaya nangaphandle, amaziko ophando, iiyunivesithi kunye nabasebenzi bophando lwezesayensi kwishishini. Inkampani yethu ibandakanyeka kakhulu kuphando oluzimeleyo nophuhliso, uyilo, imveliso, ukuthengiswa kweemveliso ze-optoelectronic, kwaye ibonelela ngezisombululo ezintsha kunye neenkonzo zobungcali, ezenzelwe wena kubaphandi bezesayensi kunye neenjineli zemizi-mveliso. Emva kweminyaka yokuvelisa izinto ezintsha ngokuzimeleyo, yenze uthotho lweemveliso ze-photoelectric ezityebileyo nezigqibeleleyo, ezisetyenziswa kakhulu kumashishini kamasipala, emkhosini, kwezothutho, kumandla ombane, kwezemali, kwimfundo, kwezonyango nakwamanye amashishini.
Sijonge phambili kwintsebenziswano nawe!
Ixesha lokuthumela: Matshi-29-2023