Umugqa wokulibaziseka we-Optical: Isihluthulelo sokulinganisa isikhathi esixazululiwe
Ukuze kutholakale indlela enembile yokudala ukubambezeleka okuthembekile kunoma yikuphi ukuhlolwa kwe-spectroscopy okuxazululwe ngesikhathi noma okuguquguqukayo, izici eziningana ku-umugqa wokulibazisekaIzinga kumele licatshangelwe ukunciphisa noma ukususa amaphutha ahlobene nezinga eliqondile. Kunoma yikuphi ukuhlolwa kwe-spectroscopy kanye ne-dynamics okuxazululwe ngesikhathi, enye yezingxenye ezibaluleke kakhulu umugqa wokulibaziseka kwe-optical. Umugqa wokulibaziseka ojwayelekile we-optical uqukethe isibuko sangemuva noma isibuko esigoqekayo esigabeni sokuhumusha (Isithombe 1). Lapho ukhetha isigaba sokuhumusha, amapharamitha athile esiteji kanye nomshayeli noma isilawuli kufanele acatshangelwe, njengoba angathinta ukuhlaziywa kwedatha kanye nokuchazwa kwayo. Amapharamitha okulawula ukunyakaza abalulekile athinta izilinganiso ezixazululwe ngesikhathi afaka ukubambezeleka okuphelele, ukunyakaza okuncane okukhuphukayo (i-MIM), ukuphindaphindeka, ukunemba, kanye nephutha lomshini.
Ipharamitha yokuqala okudingeka icatshangelwe ezingeni eliqondile ukubambezeleka okuphelele (T) – isikhathi esidingekayo ukuze ukukhanya kusakazeke ekubukeni emuvaidivayisi yokukhanyabese wakha indlela yokubuya. Lokhu kuhlobene ngqo nobubanzi bokuhamba (L) besigaba esiqondile: T = 2*L/c, lapho u-c kuyijubane lokukhanya endaweni engenalutho. Ipharamitha elandelayo ebaluleke kakhulu yisisombululo sokubambezeleka (Δτ), esihlobene ne-MIM yezinga lokuhumusha futhi sibalwa kusetshenziswa ifomula ethi Δτ = 2*MIM/c.
Kubalulekile ukuhlukanisa phakathi kwe-MIM kanye nesisombululo sesistimu yokunyakaza ngoba zimele imiqondo emibili ehlukene. I-MIM ibhekisela ekunyakazeni okuncane kakhulu okwenziwa yidivayisi okungadluliselwa njalo nangokuthembekile, ngakho-ke imelela ikhono lesistimu; ngakolunye uhlangothi, isinqumo (ukubonisa noma isinqumo se-encoder) yinani elincane kakhulu elingaboniswa yisilawuli noma inani elincane kakhulu elingenziwa yi-encoder, libhekisela kwisici sokuklama.
Enye ipharamitha yesigaba ebaluleke ngokulinganayo njenge-MIM ukuphindaphinda kwesigaba, okubhekisela ekhonweni lesistimu lokufinyelela isikhundla esiqondisiwe ngemuva kwemizamo eminingi. Ezilinganisweni ezijwayelekile ezixazululwe ngesikhathi, isigaba esiqondile siskena ngaphakathi kwebanga elithile (elihambisana nokulibaziseka kwesikhathi esithile) futhi siqopha ezinye izimpawu zesampula eqondiwe njengomsebenzi wokulibaziseka kwesikhathi. Ngokusekelwe ekuqineni kwesignali yesampula kanye nesilinganiso esilindelekile sesignali-kuya-kumsindo, inani elimaphakathi lokuskena okuningi kuyindlela evame ukusetshenziswa ekulinganisweni okuxazululwe ngesikhathi. Ngale nqubo, kubalulekile ukuthi isigaba esiqondile sibe nokuphindaphinda okuphezulu.
Isikhathi sokuthunyelwe: Jan-27-2026