Eminyakeni yamuva nje, abacwaningi abavela emazweni ahlukahlukene basebenzise ama-photonics ahlanganisiwe ukuze baqaphele ngokulandelana ukuphathwa kwamagagasi okukhanya kwe-infrared futhi bawasebenzise kumanethiwekhi e-5G asheshayo, izinzwa ze-chip, kanye nezimoto ezizimele. Njengamanje, ngokujula okuqhubekayo kwalesi siqondiso socwaningo, abacwaningi sebeqalile ukwenza ukubonwa okujulile kwamabhande okukhanya abonakalayo amafushane futhi bathuthukise izinhlelo zokusebenza ezibanzi kakhulu, njengezibuko ze-chip-level LIDAR, i-AR/VR/MR (ethuthukisiwe/ebonakalayo/ehlanganisiwe) Reality), izibonisi ze-holographic, ama-chip okucubungula i-quantum, ama-optogenetic probes afakwe ebuchosheni, njll.
Ukuhlanganiswa okukhulu kwama-modulators esigaba se-optical kuyisisekelo sesistimu encane ye-optical yokuqondisa i-on-chip optical kanye nokubumba i-free-space wavefront. Le misebenzi emibili eyinhloko ibalulekile ekufezeni izinhlelo zokusebenza ezahlukahlukene. Kodwa-ke, kuma-modulators esigaba se-optical ebangeni lokukhanya okubonakalayo, kuyinselele kakhulu ukuhlangabezana nezidingo zokudlulisa okuphezulu kanye nokuguquguquka okuphezulu ngesikhathi esisodwa. Ukuze kuhlangatshezwane nale mfuneko, ngisho nezinto ze-silicon nitride kanye ne-lithium niobate ezifanele kakhulu zidinga ukwandisa ivolumu kanye nokusetshenziswa kwamandla.
Ukuze baxazulule le nkinga, uMichal Lipson noNanfang Yu baseColumbia University baklame i-silicon nitride thermo-optic phase modulator esekelwe ku-adiabatic micro-ring resonator. Bafakazele ukuthi i-micro-ring resonator isebenza esimweni esiqinile sokuxhuma. Idivayisi ingafinyelela ukuguquguquka kwesigaba ngokulahlekelwa okuncane. Uma kuqhathaniswa nama-waveguide phase modulators ajwayelekile, idivayisi inokunciphisa okungenani isikhala nokusetshenziswa kwamandla. Okuqukethwe okuhlobene kushicilelwe ku-Nature Photonics.
UMichal Lipson, uchwepheshe ohamba phambili emkhakheni we-photonics ehlanganisiwe, esekelwe ku-silicon nitride, uthe: “Isihluthulelo sesisombululo sethu esihlongozwayo ukusebenzisa i-optical resonator bese sisebenza esimweni esibizwa ngokuthi yi-strong coupling state.”
I-optical resonator iyisakhiwo esilingana kakhulu, esingaguqula ushintsho lwenkomba yokukhanya ibe ushintsho lwesigaba ngokusebenzisa imijikelezo eminingi yemisebe yokukhanya. Ngokuvamile, ingahlukaniswa ngezimo ezintathu zokusebenza ezihlukene: “ngaphansi kokuxhumanisa” kanye “nangaphansi kokuxhumanisa.” Ukuxhumanisa okubucayi” kanye “nokuxhumanisa okuqinile.” Phakathi kwazo, “ngaphansi kokuxhumanisa” kunganikeza kuphela ukuguqulwa kwesigaba okulinganiselwe futhi kuzoletha izinguquko ze-amplitude ezingadingekile, futhi “ukuxhumanisa okubucayi” kuzobangela ukulahlekelwa okukhulu kokukhanya, ngaleyo ndlela kuthinte ukusebenza kwangempela kwedivayisi.
Ukuze kufezwe ukuguqulwa okuphelele kwesigaba se-2π kanye noshintsho oluncane lwe-amplitude, ithimba locwaningo lilawule i-microring esimweni "sokuxhumanisa okuqinile". Amandla okuxhumanisa phakathi kwe-microring kanye "nebhasi" okungenani aphezulu ngokuphindwe kayishumi kunokulahlekelwa yi-microring. Ngemva kochungechunge lwemiklamo kanye nokwenza ngcono, isakhiwo sokugcina siboniswe esithombeni esingezansi. Lena indandatho ezwakalayo enobubanzi obunciphile. Ingxenye encane ye-waveguide ithuthukisa amandla okuxhumanisa okukhanya phakathi "kwebhasi" kanye ne-micro-coil. Ingxenye ye-waveguide ebanzi Ukulahleka kokukhanya kwe-microring kuncishiswa ngokunciphisa ukusabalala okukhanya kodonga oluseceleni.
UHeqing Huang, umbhali wokuqala waleli phepha, uphinde wathi: “Siklame i-miniature, yokonga amandla, futhi elahlekelwa kakhulu ukukhanya okubonakalayo okune-radius engu-5 μm kuphela kanye nokusetshenziswa kwamandla okuguqulwa kwe-π-phase okungu-0.8 mW kuphela. Ukwehluka kwe-amplitude okuqalisiwe kungaphansi kuka-10%. Okungavamile ukuthi le modulator isebenza ngokulinganayo kuma-band aluhlaza okwesibhakabhaka noluhlaza okunzima kakhulu ku-spectrum ebonakalayo.”
UNanfang Yu uphinde waveza ukuthi nakuba bekude nokufinyelela ezingeni lokuhlanganiswa kwemikhiqizo kagesi, umsebenzi wabo unciphise kakhulu igebe phakathi kokushintsha kwe-photonic kanye nokushintsha kwe-electronic. "Uma ubuchwepheshe be-modulator bangaphambilini buvumela kuphela ukuhlanganiswa kwama-modulator esigaba se-waveguide ayi-100 uma kunikezwe i-chip footprint ethile kanye nesabelomali samandla, khona-ke manje sesingakwazi ukuhlanganisa ama-phase shifters ayi-10,000 ku-chip efanayo ukuze sifeze Umsebenzi oyinkimbinkimbi kakhulu."
Ngamafuphi, le ndlela yokuklama ingasetshenziswa kuma-modulators e-electro-optic ukunciphisa isikhala esisetshenziswayo kanye nokusetshenziswa kwe-voltage. Ingasetshenziswa nakwezinye izindawo ze-spectral kanye neminye imiklamo ehlukene ye-resonator. Njengamanje, ithimba locwaningo liyabambisana ukukhombisa i-spectrum ebonakalayo ye-LIDAR eyakhiwe ama-phase shifter arrays asekelwe kuma-microring anjalo. Esikhathini esizayo, ingasetshenziswa nasezinhlelweni eziningi ezifana ne-intensive optical nonlinearity, ama-laser amasha, kanye nama-quantum optics amasha.
Umthombo wesihloko: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
I-Beijing Rofea Optoelectronics Co., Ltd. etholakala “eSigodini saseSilicon” saseShayina – i-Beijing Zhongguancun, iyibhizinisi lobuchwepheshe obuphezulu elizinikele ekukhonzeni izikhungo zocwaningo zasekhaya nezangaphandle, izikhungo zocwaningo, amanyuvesi kanye nabasebenzi bocwaningo lwesayensi yebhizinisi. Inkampani yethu ihileleke kakhulu ocwaningweni oluzimele kanye nentuthuko, ukuklama, ukukhiqiza, ukuthengisa imikhiqizo ye-optoelectronic, futhi inikeza izixazululo ezintsha kanye nezinsizakalo zobungcweti, ezenzelwe wena kubacwaningi besayensi kanye nonjiniyela bezimboni. Ngemva kweminyaka eminingi yokusungula izinto ezintsha, yakhe uchungechunge olucebile noluphelele lwemikhiqizo ye-photoelectric, esetshenziswa kabanzi embonini kamasipala, yezempi, yezokuthutha, yamandla kagesi, yezezimali, yezemfundo, yezokwelapha kanye neminye imboni.
Silangazelela ukubambisana nawe!
Isikhathi sokuthunyelwe: Mashi-29-2023