Okushaama-photodetectorsguqula ubuchwepheshe bokuxhumana nokuzwa kwe-optical fiber
Ngentuthuko eqhubekayo yesayensi nobuchwepheshe, izinhlelo zokuxhumana nge-optical fiber kanye nezinhlelo zokuzwa nge-optical fiber zishintsha izimpilo zethu. Ukusetshenziswa kwazo kungene kuzo zonke izici zokuphila kwansuku zonke, kusukela ekuxhumaneni nge-inthanethi kuya ekuxilongweni kwezokwelapha, kusukela ezenzakalelayo zezimboni kuya ocwaningweni lwesayensi. Muva nje, uhlobo olusha lweumshini wokuthola izithombeiguqule zombili izinhlelo.
Lesi sitholi sezithombe sihlanganisai-photodiode ye-PINkanye nesekethe ye-amplifier yomsindo ophansi ye-bandwidth yokusebenza ephezulu kanye nokulahlekelwa okuphansi kokufakwa. Lokhu kusho ukuthi iyakwazi ukubamba isignali yokukhanya ngesikhathi esifushane kakhulu bese iyiguqula ibe isignali kagesi, ngaleyo ndlela ifinyelele ukuguqulwa kwe-photoelectric okusheshayo nokuphumelelayo.
Ngaphezu kwalokho, ububanzi bokubona ubude be-wavelength be-photodetector buhlanganisa ama-300nm kuya ku-2300nm, buhlanganisa cishe wonke ama-wavelength abonakalayo nangama-infrared. Lesi sici sikwenza ukwazi ukusetshenziswa ezinhlelweni eziningi ezahlukene zokubona nokuzwa.
I-photodetector inomsebenzi wokucubungula isignali ye-analog kanye nokukhulisa, okungakhulisa izimpawu zokukhanya ezibuthakathaka ngokwanele ukuthi zitholwe yithuluzi ngesikhathi esifushane kakhulu. Lokhu kuyivumela ukuthi idlale indima ebalulekile emikhakheni efana nokuxhumana kwe-optical, ukuhlaziywa kwe-spectral, i-lidar njalo njalo.
Ngaphezu kokuba namandla, lesi sitholi sezithombe sihlakaniphe kakhulu ekwakhiweni. Igobolondo lenzelwe ukuvimbela uthuli kanye nokuphazamiseka kwe-electromagnetic, okungavikela ngempumelelo isekethe yangaphakathi ekuphazamisekeni kwangaphandle. Ngesikhathi esifanayo, isikhombimsebenzisi sayo sokukhipha se-SMA senza kube lula ukuxhumana namanye amadivayisi.
Kuhle ukusho ukuthi igobolondo lalesi sitholi sezithombe linomgodi onentambo, ukuze likwazi ukunamathela epulatifomu yokukhanya noma emishinini yokuhlola, okwenza kube lula kakhulu ukusebenza kokuhlola.
Sekukonke, lesi sitholi sezithombe esisha siyisikhuthazo esinamandla ezinhlelweni zokuxhumana nge-optical fiber kanye nezinhlelo zokuzwa nge-optical fiber. I-bandwidth ephezulu yokusebenza kanye nokulahlekelwa okuphansi kokufakwa kuvumela ukuguqulwa kwe-photoelectric okusheshayo nokusebenzayo, kanye nobubanzi be-wavelength kanye nokwanda okuphezulu kwenza sikwazi ukuzivumelanisa nezimo ezahlukahlukene zohlelo lokusebenza. Umklamo omuhle kakhulu kanye nokufakwa okulula kuthuthukisa kakhulu ulwazi lomsebenzisi. Ukwethulwa kwalesi sitholi sezithombe ngokungangabazeki kuzothuthukisa kakhulu ukuthuthukiswa kokuxhumana nge-optical fiber kanye nobuchwepheshe bokuzwa, okusiholela ezweni elisha lokukhanya.
Isikhathi sokuthunyelwe: Agasti-30-2023